Income Taxes - Schedule of Significant Components of Net Deferred Tax Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Jun. 30, 2019
Deferred tax assets:
Federal and state net operating losses	$ 75,615	$ 77,228
Accrued expenses and reserves	4,972	7,497
Lease liability	5,366
Deferred revenue	5,038	2,897
R&D Credits	22,843	22,108
Share-based compensation expense	1,337	1,327
Capitalized research and development	2,683	3,343
Unicap	2,105	1,953
Fixed assets/intangibles	1,199	1,323
Section 163(j) interest	1,823	1,857
Other	1,290	1,582
Total deferred tax assets	124,271	121,115
Deferred tax liabilities:
Contract acquisition costs	(977)	(1,146)
Right of use assets	(4,508)
Total deferred tax liabilities	(5,485)	(1,146)
Valuation allowance	(118,300)	(119,125)
Net deferred tax assets	$ 486	$ 844