Stockholders' Equity - Schedule of Series C Preferred Stock Outstanding, Conversion Shares and Future Dividends (Detail) shares in Thousands	12 Months Ended
	Jun. 30, 2022 $ / shares shares
Series C-1 Preferred Shares [Member]
Class Of Stock [Line Items]
Number	13,945
Preferred stock | $ / shares	$ 1.16
Number of conversion shares (in thousands)	12,022
Dividend Shares (in thousands)	8,641
Series C-2 Preferred Shares [Member]
Class Of Stock [Line Items]
Number	898
Preferred stock | $ / shares	$ 1.214
Number of conversion shares (in thousands)	740
Dividend Shares (in thousands)	518
Series C3 Preferred Shares
Class Of Stock [Line Items]
Number	1,995
Preferred stock | $ / shares	$ 1.15
Number of conversion shares (in thousands)	1,735
Dividend Shares (in thousands)	1,237
Series C Preferred Stock
Class Of Stock [Line Items]
Number	16,838
Number of conversion shares (in thousands)	14,497
Dividend Shares (in thousands)	10,396
Series C Preferred Stock | 10% - August 19, 2021 [Member]
Class Of Stock [Line Items]
Dividend Shares (in thousands)	1,698
Series C Preferred Stock | 15% - August 19, 2022 [Member]
Class Of Stock [Line Items]
Dividend Shares (in thousands)	2,174
Series C Preferred Stock | 20% - August 19, 2023 [Member]
Class Of Stock [Line Items]
Dividend Shares (in thousands)	2,899
Series C Preferred Stock | 25% - August 19, 2024 [Member]
Class Of Stock [Line Items]
Dividend Shares (in thousands)	3,625