Stock Warrants - Additional Information (Detail) - $ / shares	9 Months Ended	12 Months Ended
Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2018
Class of warrant exercise price	$ 4.50	$ 4.50
Class of warrant exercisable period	5 years	5 years
Warrants issued or issuable	0	0	0
Maximum
Issuance of warrants	5,600,000	5,600,000

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(i)(2))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Name:	us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant