Convertible Preferred Stock and Stockholders' Equity - Additional Information (Details)

v3.20.4

Convertible Preferred Stock and Stockholders' Equity - Additional Information (Details)													1 Months Ended							12 Months Ended
	Nov. 09, 2020 $ / shares shares	Oct. 20, 2020 shares	Jul. 27, 2020 shares	May 18, 2020 shares	Feb. 28, 2020 USD ($) $ / shares shares	Oct. 08, 2019 USD ($) $ / shares shares	Sep. 09, 2019 shares	Sep. 01, 2019	Apr. 18, 2019 USD ($) $ / shares shares	Mar. 01, 2019	Jan. 04, 2019 shares	Sep. 01, 2018	Jan. 31, 2021 USD ($) $ / shares shares	Feb. 29, 2020 USD ($) $ / shares shares	Aug. 31, 2019 USD ($) $ / shares shares	Jul. 31, 2019 USD ($) $ / shares shares	May 31, 2019 USD ($) $ / shares shares	Apr. 30, 2019 USD ($) $ / shares shares	Jan. 31, 2018 shares	Dec. 31, 2020 USD ($) $ / shares shares	Dec. 31, 2019 USD ($) shares	Nov. 06, 2019 shares	Oct. 16, 2019 $ / shares
Class of Stock [Line Items]
Temporary Equity, Shares Issued | shares																				250,000	250,000
Temporary Equity, Dividend Rate, Percentage																				8.00%	8.00%
Proceeds from Warrant Exercises																				$ 789,000	$ 1,167,000
Fair value of warrant									$ 250,000
Fair Value Adjustment of Warrants																				$ (16,000)	(204,000)
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights																				In the event an employee voluntarily resigns, the release dates of the shares will be extended such that only 16.5% of the shares are released every six months, until 100% are released. In the event that a director voluntarily resigns , each of the release dates will be extended six months.
Stock Issued During Period, Value, Restricted Stock Award, Gross																					(87,000)
Payments Related to Tax Withholding for Share-based Compensation																				$ 0	$ 87,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | shares																				352
Issuance of common stock, net of issuance costs (in shares) | shares	236,375			60,250
Warrants to purchase shares of Common Stock | shares	45,534								12,756
Exercise price of warrants | $ / shares	$ 2.55
Fair value of warrant									$ 250,000
February 2020 Private Placement [Member]
Class of Stock [Line Items]
Convertible Preferred Stock, Convertible, Issue of Shares, Threshold Percentage														9.99%
Dividend rate														0.00%
Volatility rate														59.00%
Risk free interest rate														0.89%
Exercise price | $ / shares														$ 6.00
Expected term														5 years
Proceeds from Warrant Exercises														$ 103,000
Share Price | $ / shares					$ 9.17
Warrants and Rights Outstanding, Term					5 years
Number of unit issues , Value					$ 91,062
Number of shares per unit | shares					1
Number of warrants per unit | $ / shares					$ 0.50
Cash fees paid					$ 83,000
Warrants to purchase shares of Common Stock | shares					4,553									45,534
Exercise price of warrants | $ / shares					$ 8.80									$ 9.80
Warrant term					5 years
Gross proceeds					$ 835,000
Net proceeds					$ 725,000
Warrants, Beneficial Ownership Interest, Percent														4.99%
Warrant [Member]
Class of Stock [Line Items]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options | shares																				7,299,102	1,454,826
Warrant [Member] | Warrant Amendment Agreement
Class of Stock [Line Items]
Class of Warrant or Right, Reduced Exercise Price of Warrants or Rights | $ / shares						$ 16.00
Warrant [Member] | Subsequent Events
Class of Stock [Line Items]
Proceeds from Warrant Exercises													$ 2,900,000
Warrants and Rights Outstanding, Term													5 years
Warrants to purchase shares of Common Stock | shares													1,221,675
Exercise price of warrants | $ / shares													$ 4.20
Warrant term													5 years
Original Warrants | Warrant Amendment Agreement
Class of Stock [Line Items]
Class of Warrant or Right, Reduced Exercise Price of Warrants or Rights | $ / shares																				$ 15.80
Class of Warrant or Right, Amended Exercise Price of Warrants or Rights | $ / shares						$ 15.80
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Exercises In Period						$ 56,419
Proceeds from Warrant Exercises						$ 903,000
Class of Warrant or Right, Outstanding | shares						69,070														20,718		125,000
Fair Value Adjustment of Warrants						$ 840,000
Exercise price of warrants | $ / shares																							$ 0.70
Allocated Share-based Compensation Expense																				$ 892,000
Restricted Stock [Member]
Class of Stock [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period | shares																				58,096
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number | shares																				57,169	47,146
Number of restricted shares granted | shares																				102,669
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period																				2 years 7 months 6 days
Unrecognized Tax Benefits, Interest on Income Taxes Expense																				$ 188,000
Share-based Compensation Award, Tranche One [Member]
Class of Stock [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage												33.40%
Share-based Compensation Award, Tranche Two [Member]
Class of Stock [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage										33.30%
Share-based Compensation Award, Tranche Three [Member]
Class of Stock [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage								33.30%
Employees [Member]
Class of Stock [Line Items]
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures | shares																			64,224
Director [Member]
Class of Stock [Line Items]
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures | shares																			7,656
Mr Michael Howse [Member] | Warrant [Member]
Class of Stock [Line Items]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options | shares																					197,272
Walsh [Member] | Warrant [Member]
Class of Stock [Line Items]
Fair Value Adjustment of Warrants																		$ 216,000
Share Price | $ / shares																		$ 2.08
Warrants to purchase shares of Common Stock | shares																		12,756
Exercise price of warrants | $ / shares																		$ 39.60
Walsh [Member] | Warrant [Member] | Dividend Yield
Class of Stock [Line Items]
Measurement input																		0
Walsh [Member] | Warrant [Member] | Volatility
Class of Stock [Line Items]
Volatility rate																		59.00%
Walsh [Member] | Warrant [Member] | Risk-free rate of interest
Class of Stock [Line Items]
Measurement input																		2.38
Alexander Capital, LP.
Class of Stock [Line Items]
Dividend rate														0.00%
Volatility rate														59.00%
Risk free interest rate														0.89%
Exercise price | $ / shares														$ 6.00
Expected term														5 years
Proceeds from Warrant Exercises														$ 11,000
Alexander Capital, LP. | Warrant [Member]
Class of Stock [Line Items]
Fair Value Adjustment of Warrants																	$ 70,000	$ 43,000
Share Price | $ / shares																	$ 27.20	$ 41.60		$ 15.80
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options | shares																				15,000
Warrants to purchase shares of Common Stock | shares																	6,114	2,041
Exercise price of warrants | $ / shares																	$ 33.20	$ 43.60
Alexander Capital, LP. | Warrant [Member] | Dividend Yield
Class of Stock [Line Items]
Measurement input																	0	0
Alexander Capital, LP. | Warrant [Member] | Volatility
Class of Stock [Line Items]
Measurement input																	60	59
Alexander Capital, LP. | Warrant [Member] | Risk-free rate of interest
Class of Stock [Line Items]
Measurement input																	2.18	2.38
George Oliva [Member]
Class of Stock [Line Items]
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures | shares							7,500
Lippert Heishorn Associates Inc [Member] | Warrant [Member]
Class of Stock [Line Items]
Fair Value Adjustment of Warrants																$ 23,000
Share Price | $ / shares																$ 23.20
Warrants to purchase shares of Common Stock | shares																2,000
Exercise price of warrants | $ / shares																$ 24.80
Lippert Heishorn Associates Inc [Member] | Warrant [Member] | Dividend Yield
Class of Stock [Line Items]
Measurement input																0
Lippert Heishorn Associates Inc [Member] | Warrant [Member] | Volatility
Class of Stock [Line Items]
Measurement input																58
Lippert Heishorn Associates Inc [Member] | Warrant [Member] | Risk-free rate of interest
Class of Stock [Line Items]
Measurement input																1.88
DFC Advisory Services, LLC [Member] | Warrant [Member]
Class of Stock [Line Items]
Fair Value Adjustment of Warrants															$ 23,000
Share Price | $ / shares															$ 20.20
Warrants to purchase shares of Common Stock | shares															2,500
Exercise price of warrants | $ / shares															$ 26.20
DFC Advisory Services, LLC [Member] | Warrant [Member] | Dividend Yield
Class of Stock [Line Items]
Measurement input															0
DFC Advisory Services, LLC [Member] | Warrant [Member] | Volatility
Class of Stock [Line Items]
Measurement input															58
DFC Advisory Services, LLC [Member] | Warrant [Member] | Risk-free rate of interest
Class of Stock [Line Items]
Measurement input															1.51
LTSI
Class of Stock [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award Maximum Percentage of Shares Authorized																				15.00%
Shares authorized for issuance | shares																				672,180
Stock Issued During Period, Shares, Restricted Stock Award, Gross | shares																				705	47,168
Stock Issued During Period, Value, Restricted Stock Award, Gross																				$ 3,000,000,000	$ 1,500,000
Stock Issued During Period, Value, Restricted Stock Award, Forfeitures																				$ 18,141
Restricted Stock Shares Withheld | shares																				2,321
Payments Related to Tax Withholding for Share-based Compensation																				$ 87,000
LTSI | Mr Michael Howse [Member]
Class of Stock [Line Items]
Deferred Compensation Arrangement with Individual, Shares Issued | shares											20,000
2020 Stock Incentive Plan | Restricted Stock [Member]
Class of Stock [Line Items]
Shares authorized for issuance | shares		650,000	650,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number | shares																				626,974
Number of restricted shares granted | shares																				637,824
Shares issued to to employees, directors and consultants | shares		614,824	614,824
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period																				2 years 7 months 6 days
Unrecognized Tax Benefits, Interest on Income Taxes Expense																				$ 1,366,000
Common Shares
Class of Stock [Line Items]
Stock Issued During Period, Shares, Restricted Stock Award, Gross | shares																					26,706
Stock Issued During Period, Value, Restricted Stock Award, Gross																					$ 0
Stock Issued During Period, Value, Restricted Stock Award, Forfeitures																				$ 0
Issuance of common stock, net of issuance costs (in shares) | shares																				5,931,062	328,786
Warrants to purchase shares of Common Stock | shares	236,369
Common Shares | Warrant Amendment Agreement
Class of Stock [Line Items]
Class of Warrant or Right, Outstanding | shares																						7,647
Minimum | Original Warrants
Class of Stock [Line Items]
Exercise price of warrants | $ / shares						$ 60.00
Maximum | Original Warrants
Class of Stock [Line Items]
Exercise price of warrants | $ / shares						$ 108.00
Series A Preferred Stock
Class of Stock [Line Items]
Temporary Equity, Shares Issued | shares									250,000
Temporary Equity, Par Value Per Share | $ / shares									$ 0.0001
Temporary Equity, Stated Value Per Share | $ / shares									4.00
Temporary Equity, Dividend Rate, Percentage																				8.00%
Convertible Preferred Stock Conversion Price | $ / shares																				$ 80.00
Convertible Preferred Stock Floor Price Per Share | $ / shares									$ 30.00
Convertible Preferred Stock, Convertible, Issue of Shares, Threshold Percentage									19.99%
Proceeds from Issuance of Convertible Preferred Stock									$ 1,000,000											$ 920,000
Embedded Derivative, Fair Value of Embedded Derivative Liability									$ 216,000
Preferred Stock, Convertible, Threshold Trading Days									10 days
Dividends																				$ 80,000	$ 56,000
Debt Instrument, Interest Rate, Stated Percentage																				95.00%
Preferred stock, Redemption Value Percentage																				120.00%
Share Price | $ / shares									$ 80.00
Series A Preferred Stock | Walsh [Member]
Class of Stock [Line Items]
Proceeds from Issuance of Convertible Preferred Stock									$ 1,000,000
Warrants to purchase shares of Common Stock | shares									250,000
Series A Preferred Stock | Walsh [Member] | Warrant [Member]
Class of Stock [Line Items]
Fair value of warrant																		$ 200,000
Fair value of warrant																		$ 200,000
Series A Preferred Stock | Minimum
Class of Stock [Line Items]
Convertible Preferred Stock Conversion Price | $ / shares									$ 30.00
Proceeds from Issuance of Convertible Preferred Stock									$ 500,000
Preferred stock, Redemption Basis, Amount Sought or Declared									100,000
Preferred stock, Redemption Basis, Gain or Loss on Property									100,000
Series A Preferred Stock | Maximum
Class of Stock [Line Items]
Proceeds from Issuance of Convertible Preferred Stock									$ 5,000,000											$ 500,000