CONDENSED CONSOLIDATED STATEMENTS OF CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY (DEFICIT) - USD ($)
|
Common Shares [Member]
Shelf Offering
|
Common Shares [Member] |
Additional Paid-in Capital [Member]
Shelf Offering
|
Additional Paid-in Capital [Member] |
Accumulated Other Comprehensive Loss [Member]
Shelf Offering
|
Accumulated Other Comprehensive Loss [Member] |
Accumulated Deficit [Member]
Shelf Offering
|
Accumulated Deficit [Member] |
Convertible Preferred Stock [Member]
Shelf Offering
|
Convertible Preferred Stock [Member] |
Shelf Offering |
Total |
Balance at Dec. 31, 2018 |
|
|
|
$ 179,503,000
|
|
$ (45,000)
|
|
$ (175,640,000)
|
|
$ 0
|
|
$ 3,818,000
|
|
Balance (in shares) at Dec. 31, 2018 |
|
769,890
|
|
|
|
|
|
|
|
|
|
|
|
Release of vested restricted common stock |
|
|
|
(65,000)
|
|
0
|
|
0
|
|
0
|
|
(65,000)
|
|
Release of vested restricted common stock (in shares) |
|
6,193
|
|
|
|
|
|
|
|
|
|
|
|
Issuance of warrants for common stock |
|
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
Currency translation adjustment |
|
|
|
0
|
|
(11,000)
|
|
0
|
|
0
|
|
(11,000)
|
|
Net loss |
|
|
|
0
|
|
0
|
|
(2,565,000)
|
|
0
|
|
(2,565,000)
|
|
Balance at Mar. 31, 2019 |
|
$ 0
|
|
179,438,000
|
|
(56,000)
|
|
(178,205,000)
|
|
$ 0
|
|
1,177,000
|
|
Balance (in shares) at Mar. 31, 2019 |
|
776,083
|
|
|
|
|
|
|
|
0
|
|
|
|
Balance at Dec. 31, 2018 |
|
|
|
179,503,000
|
|
(45,000)
|
|
(175,640,000)
|
|
$ 0
|
|
3,818,000
|
|
Balance (in shares) at Dec. 31, 2018 |
|
769,890
|
|
|
|
|
|
|
|
|
|
|
|
Deemed dividend from warrant repricing |
|
|
|
|
|
|
|
|
|
|
|
0
|
|
Convertible/Accretion preferred stock dividend |
|
|
|
|
|
0
|
|
0
|
|
|
|
|
|
Foreign currency translation adjustment |
|
|
|
|
|
|
|
|
|
|
|
(13,000)
|
|
Net loss |
|
|
|
|
|
|
|
|
|
|
|
(8,097,000)
|
|
Balance at Sep. 30, 2019 |
|
|
|
184,702,000
|
|
(58,000)
|
|
(183,737,000)
|
|
$ 497,000
|
|
907,000
|
|
Balance (in shares) at Sep. 30, 2019 |
|
1,024,198
|
|
|
|
|
|
|
|
250,000
|
|
|
|
Balance at Mar. 31, 2019 |
|
$ 0
|
|
179,438,000
|
|
(56,000)
|
|
(178,205,000)
|
|
$ 0
|
|
1,177,000
|
|
Balance (in shares) at Mar. 31, 2019 |
|
776,083
|
|
|
|
|
|
|
|
0
|
|
|
|
Issuance of common stock and warrants, net of offering costs |
|
|
|
4,664,000
|
|
0
|
|
0
|
|
$ 0
|
|
4,664,000
|
|
Issuance of common stock and warrants, net of offering costs (in shares) |
|
203,786
|
|
|
|
|
|
|
|
|
|
|
|
Proceeds from issuance of preferred stock and common stock warrants, net of issuance costs |
|
|
|
200,000
|
|
0
|
|
0
|
|
$ 720,000
|
|
200,000
|
|
Proceeds from issuance of preferred stock and common stock warrants, net of issuance costs (in shares) |
|
|
|
|
|
|
|
|
|
250,000
|
|
|
|
Convertible/Accretion preferred stock dividend |
|
|
|
(16,000)
|
|
0
|
|
0
|
|
$ 16,000
|
|
(16,000)
|
|
Issuance of warrants for common stock (in shares) |
|
0
|
|
|
|
|
|
|
|
|
|
|
|
Fair value of derivative liability in connection with issuance of preferred stock |
|
|
|
0
|
|
0
|
|
0
|
|
(216,000)
|
|
0
|
|
Issuance of warrants for common stock in connection with preferred stock offering |
|
$ 0
|
|
43,000
|
|
0
|
|
0
|
|
$ (43,000)
|
|
43,000
|
|
Issuance of warrants for common stock in connection with preferred stock offering (in shares) |
|
|
|
|
|
|
|
|
|
0
|
|
|
|
Issuance of common stock for services |
|
|
|
234,000
|
|
0
|
|
0
|
|
$ 0
|
|
234,000
|
|
Issuance of common stock for services (in shares) |
|
8,077
|
|
|
|
|
|
|
|
|
|
|
|
Currency translation adjustment |
|
|
|
0
|
|
(2,000)
|
|
0
|
|
0
|
|
(2,000)
|
|
Net loss |
|
|
|
0
|
|
0
|
|
(2,824,000)
|
|
0
|
|
(2,824,000)
|
|
Balance at Jun. 30, 2019 |
|
|
|
184,563,000
|
|
(58,000)
|
|
(181,029,000)
|
|
$ 477,000
|
|
3,476,000
|
|
Balance (in shares) at Jun. 30, 2019 |
|
987,946
|
|
|
|
|
|
|
|
250,000
|
|
|
|
Convertible/Accretion preferred stock dividend |
|
|
|
(20,000)
|
|
|
|
|
|
$ 20,000
|
|
(20,000)
|
|
Stock-based compensation |
|
|
|
10,000
|
|
0
|
|
0
|
|
0
|
|
10,000
|
|
Stock-based compensation (in shares) |
|
11,000
|
|
|
|
|
|
|
|
|
|
|
|
Release of vested restricted common stock |
|
|
|
(22,000)
|
|
0
|
|
0
|
|
0
|
|
(22,000)
|
|
Release of vested restricted common stock (in shares) |
|
20,514
|
|
|
|
|
|
|
|
|
|
|
|
Foreign currency translation adjustment |
|
|
|
|
|
|
|
|
|
|
|
0
|
|
Issuance of warrants for common stock |
|
|
|
46,000
|
|
0
|
|
0
|
|
0
|
|
46,000
|
|
Change in fair value of common stock warrants upon repricing |
|
|
|
46,000
|
|
0
|
|
0
|
|
0
|
|
46,000
|
|
Issuance of common stock upon warrant exercise |
|
|
|
67,000
|
|
0
|
|
0
|
|
0
|
|
67,000
|
|
Issuance of common stock upon warrant exercise |
|
4,176
|
|
|
|
|
|
|
|
|
|
|
|
Issuance of common stock for services |
|
|
|
12,000
|
|
0
|
|
0
|
|
0
|
|
12,000
|
|
Issuance of common stock for services (in shares) |
|
563
|
|
|
|
|
|
|
|
|
|
|
|
Net loss |
|
|
|
0
|
|
0
|
|
(2,708,000)
|
|
0
|
|
(2,708,000)
|
|
Balance at Sep. 30, 2019 |
|
|
|
184,702,000
|
|
(58,000)
|
|
(183,737,000)
|
|
$ 497,000
|
|
907,000
|
|
Balance (in shares) at Sep. 30, 2019 |
|
1,024,198
|
|
|
|
|
|
|
|
250,000
|
|
|
|
Balance at Dec. 31, 2019 |
|
$ 0
|
|
188,320,000
|
|
(48,000)
|
|
(187,678,000)
|
|
$ 517,000
|
|
594,000
|
[1] |
Balance (in shares) at Dec. 31, 2019 |
|
1,245,238
|
|
|
|
|
|
|
|
250,000
|
|
|
|
Issuance of common stock and warrants, net of offering costs |
|
$ 0
|
|
725,000
|
|
0
|
|
0
|
|
$ 0
|
|
725,000
|
|
Issuance of common stock and warrants, net of offering costs (in shares) |
|
91,062
|
|
|
|
|
|
|
|
0
|
|
|
|
Issuance of common stock in connection with notes payable |
|
$ 0
|
|
4,000
|
|
0
|
|
0
|
|
$ 0
|
|
4,000
|
|
Issuance of common stock in connection with notes payable (in shares) |
|
500
|
|
|
|
|
|
|
|
0
|
|
|
|
Issuance of warrants in connection with convertible notes payable |
|
$ 0
|
|
630,000
|
|
0
|
|
0
|
|
$ 0
|
|
630,000
|
|
Convertible/Accretion preferred stock dividend |
|
0
|
|
(20,000)
|
|
0
|
|
0
|
|
20,000
|
|
(20,000)
|
|
Stock-based compensation |
|
$ 0
|
|
75,000
|
|
0
|
|
0
|
|
$ 0
|
|
75,000
|
|
Stock-based compensation (in shares) |
|
2,000
|
|
|
|
|
|
|
|
0
|
|
|
|
Restricted stock awards cancelled |
|
$ 0
|
|
0
|
|
0
|
|
0
|
|
$ 0
|
|
0
|
|
Restricted stock awards cancelled (in shares) |
|
(550)
|
|
|
|
|
|
|
|
0
|
|
|
|
Release of vested restricted common stock |
|
$ 0
|
|
0
|
|
0
|
|
0
|
|
$ 0
|
|
0
|
|
Release of vested restricted common stock (in shares) |
|
353
|
|
|
|
|
|
|
|
|
|
|
|
Net loss |
|
$ 0
|
|
0
|
|
0
|
|
(2,680,000)
|
|
0
|
|
(2,680,000)
|
|
Balance at Mar. 31, 2020 |
|
$ 0
|
|
189,734,000
|
|
(48,000)
|
|
(190,358,000)
|
|
$ 537,000
|
|
(672,000)
|
|
Balance (in shares) at Mar. 31, 2020 |
|
1,338,603
|
|
|
|
|
|
|
|
250,000
|
|
|
|
Balance at Dec. 31, 2019 |
|
$ 0
|
|
188,320,000
|
|
(48,000)
|
|
(187,678,000)
|
|
$ 517,000
|
|
594,000
|
[1] |
Balance (in shares) at Dec. 31, 2019 |
|
1,245,238
|
|
|
|
|
|
|
|
250,000
|
|
|
|
Deemed dividend from warrant repricing |
|
|
|
|
|
|
|
|
|
|
|
(134,000)
|
|
Convertible/Accretion preferred stock dividend |
|
$ 0
|
|
|
|
0
|
|
0
|
|
|
|
|
|
Foreign currency translation adjustment |
|
|
|
|
|
|
|
|
|
|
|
0
|
|
Net loss |
|
|
|
|
|
|
|
|
|
|
|
(9,068,000)
|
|
Balance at Sep. 30, 2020 |
|
$ 1,000
|
|
206,030,000
|
|
0
|
|
(196,746,000)
|
|
$ 577,000
|
|
9,285,000
|
|
Balance (in shares) at Sep. 30, 2020 |
|
7,822,375
|
|
|
|
|
|
|
|
250,000
|
|
|
|
Balance at Mar. 31, 2020 |
|
$ 0
|
|
189,734,000
|
|
(48,000)
|
|
(190,358,000)
|
|
$ 537,000
|
|
(672,000)
|
|
Balance (in shares) at Mar. 31, 2020 |
|
1,338,603
|
|
|
|
|
|
|
|
250,000
|
|
|
|
Issuance of common stock and warrants, net of offering costs |
$ 1,000
|
|
$ 9,957,000
|
|
$ 0
|
|
$ 0
|
|
$ 0
|
|
$ 9,958,000
|
|
|
Issuance of common stock and warrants, net of offering costs (in shares) |
4,315,000
|
|
|
|
|
|
|
|
0
|
|
|
|
|
Issuance of common stock in connection with settlements |
|
$ 0
|
|
135,000
|
|
0
|
|
0
|
|
$ 0
|
|
135,000
|
|
Issuance of common stock in connection with settlements (in shares) |
|
60,250
|
|
|
|
|
|
|
|
0
|
|
|
|
Deemed dividend from warrant down-round provision |
|
$ 0
|
|
(134,000)
|
|
0
|
|
0
|
|
$ 0
|
|
(134,000)
|
|
Deemed dividend from warrant repricing |
|
0
|
|
134,000
|
|
0
|
|
0
|
|
0
|
|
134,000
|
|
Convertible/Accretion preferred stock dividend |
|
0
|
|
(20,000)
|
|
|
|
|
|
20,000
|
|
(20,000)
|
|
Stock-based compensation |
|
$ 0
|
|
72,000
|
|
0
|
|
0
|
|
$ 0
|
|
72,000
|
|
Stock-based compensation (in shares) |
|
2,000
|
|
|
|
|
|
|
|
0
|
|
|
|
Restricted stock awards cancelled |
|
$ 0
|
|
0
|
|
0
|
|
0
|
|
$ 0
|
|
0
|
|
Restricted stock awards cancelled (in shares) |
|
(2,500)
|
|
|
|
|
|
|
|
0
|
|
|
|
Issuance of common stock, prefunded warrants and warrants, net of public offering costs |
|
$ 0
|
|
5,515,000
|
|
0
|
|
0
|
|
$ 0
|
|
5,515,000
|
|
Issuance of common stock, prefunded warrants and warrants, net of public offering costs (in shares) |
|
1,525,000
|
|
|
|
|
|
|
|
0
|
|
|
|
Proceeds from the exercise of prefunded warrants and common stock warrants |
|
$ 0
|
|
37,000
|
|
0
|
|
0
|
|
$ 0
|
|
37,000
|
|
Proceeds from the exercise of prefunded warrants and common stock warrants (in shares) |
|
485,000
|
|
|
|
|
|
|
|
0
|
|
|
|
Gain on foreign currency translation from closure of subsidiary |
|
$ 0
|
|
0
|
|
48,000
|
|
0
|
|
$ 0
|
|
48,000
|
|
Net loss |
|
0
|
|
0
|
|
0
|
|
(3,398,000)
|
|
0
|
|
(3,398,000)
|
|
Balance at Jun. 30, 2020 |
|
$ 1,000
|
|
205,430,000
|
|
0
|
|
(193,756,000)
|
|
$ 557,000
|
|
11,675,000
|
|
Balance (in shares) at Jun. 30, 2020 |
|
7,723,353
|
|
|
|
|
|
|
|
250,000
|
|
|
|
June 2020 shelf offering - issuance costs |
|
$ 0
|
|
(42,000)
|
|
0
|
|
0
|
|
$ 0
|
|
(42,000)
|
|
Deemed dividend from warrant repricing |
|
|
|
|
|
|
|
|
|
|
|
0
|
|
Convertible/Accretion preferred stock dividend |
|
0
|
|
(20,000)
|
|
0
|
|
0
|
|
20,000
|
|
(20,000)
|
|
Stock-based compensation |
|
$ 0
|
|
662,000
|
|
0
|
|
0
|
|
0
|
|
662,000
|
|
Stock-based compensation (in shares) |
|
98,669
|
|
|
|
|
|
|
|
|
|
|
|
Release of vested restricted common stock |
|
$ 0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
Release of vested restricted common stock (in shares) |
|
353
|
|
|
|
|
|
|
|
|
|
|
|
Foreign currency translation adjustment |
|
|
|
|
|
|
|
|
|
|
|
0
|
|
Net loss |
|
$ 0
|
|
0
|
|
0
|
|
(2,990,000)
|
|
0
|
|
(2,990,000)
|
|
Balance at Sep. 30, 2020 |
|
$ 1,000
|
|
$ 206,030,000
|
|
$ 0
|
|
$ (196,746,000)
|
|
$ 577,000
|
|
$ 9,285,000
|
|
Balance (in shares) at Sep. 30, 2020 |
|
7,822,375
|
|
|
|
|
|
|
|
250,000
|
|
|
|
|
|