Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Additional Information (Details)

v3.19.2
Fair Value Measurements - Additional Information (Details) - $ / shares
3 Months Ended
Dec. 31, 2018
Jun. 30, 2018
Jun. 30, 2019
Series A Preferred Stock [Member]      
Debt Instrument, Convertible, Conversion Price     $ 1.50
Debt Instrument, Interest Rate, Stated Percentage     95.00%
Measurement Input, Default Rate [Member]      
Fair Value Input Probability Of Default 25.00% 75.00%