Stockholders' Equity - Schedule of Outstanding Series C Agent Warrants (Detail) - Series C Warrants [Member]	6 Months Ended
Dec. 31, 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

Number of warrants or rights outstanding, number of conversion.

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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644

+ Details

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- Definition

Number of warrants or rights outstanding.

+ References

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- Definition

Number of shares of common stock issued as dividends during the period. Excludes stock splits.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644

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