Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Jun. 30, 2019
Deferred tax assets:
Net operating loss carryforwards	$ 14,786	$ 17,738
Lease liability - current and non-current	202
Accrued expenses and other timing	1,047	1,100
Property and equipment, principally due to differences in depreciation	85
Total gross deferred tax assets	16,120	18,838
Less — valuation allowance	(15,941)	(18,903)
Net deferred tax assets	179	(65)
Deferred tax liabilities:
Right-of-use assets	(179)
Property and equipment, principally due to differences in depreciation		65
Total gross deferred tax liabilities	(179)	65
Net deferred tax assets	$ 0	$ 0