Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Schedule of Outstanding Series C Warrants (Detail)

v3.20.2
Stockholders' Equity - Schedule of Outstanding Series C Warrants (Detail) - Series C Warrants [Member]
3 Months Ended
Sep. 30, 2020
$ / shares
shares
Issued warrants to underwriters 2,504
Number of conversion shares 2,152,000
Cumulative common stock dividends 1,506,000
Series 1 Warrants Outstanding  
Issued warrants to underwriters 1,959
Warrants exercise price | $ / shares $ 1.16
Number of conversion shares 1,689,000
Cumulative common stock dividends 1,182,000
Series 2 Warrants Outstanding Member  
Issued warrants to underwriters 219
Warrants exercise price | $ / shares $ 1.21
Number of conversion shares 180,000
Cumulative common stock dividends 126,000
Series 3 Warrants Outstanding  
Issued warrants to underwriters 326
Warrants exercise price | $ / shares $ 1.15
Number of conversion shares 283,000
Cumulative common stock dividends 198,000