Income Taxes - Additional Information (Details) - USD ($)	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Income Taxes [Line Items]
Loss from continuing operations, before provision for income taxes	$ 7,515,000	$ 13,302,000
Income tax expense	1,813,000	44,000
Income tax expense (benefit) from discontinued operations	$ (111,000)	$ 0
Statutory income tax rate	21.00%	21.00%
Decrease in valuation allowance	$ 94,200,000
Federal net operating loss carryforwards	951,601,000
Operating loss carryforward for state income tax	$ 198,000,000
Net operating loss carryforwards description	Under Code Section 382, the utilization of a corporation's NOL carryforwards is limited following a change in ownership (as defined by the Code) of greater than 50% within a rolling three-year period.
Tax benefits preservation agreement, minimum increase of collective ownership of aggregate amount of outstanding shares	50.00%
Tax benefits preservation agreement, ownership change period	3 years
Decrease in unrecognized tax benefits due to tax attributes	$ 8,400,000	$ 6,100,000
Unrecognized tax benefits	36,000,000.0	44,400,000
Interest accrued for tax liabilities	0	0
California
Income Taxes [Line Items]
Operating loss carryforward for state income tax	185,000,000
Massachusetts
Income Taxes [Line Items]
Operating loss carryforward for state income tax	$ 13,000,000
Minimum | California
Income Taxes [Line Items]
Operating loss carryforwards expiration period	2029
Minimum | Massachusetts
Income Taxes [Line Items]
Operating loss carryforwards expiration period	2031
Maximum | California
Income Taxes [Line Items]
Operating loss carryforwards expiration period	2037
Maximum | Massachusetts
Income Taxes [Line Items]
Operating loss carryforwards expiration period	2038
Federal
Income Taxes [Line Items]
Income tax expense	$ 0	$ 0
Federal | Minimum
Income Taxes [Line Items]
Operating loss carryforwards expiration period	2022
Federal | Maximum
Income Taxes [Line Items]
Operating loss carryforwards expiration period	2037