Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Cumulative Effect Period of Adoption Adjustment	Common Stock	Additional Paid-In Capital	Retained Earnings (Deficit)	Retained Earnings (Deficit) Cumulative Effect Period of Adoption Adjustment	Treasury Stock
Balance at Jun. 30, 2017	$ 198,839		$ 469	$ 234,604	$ (29,422)		$ (6,812)
Balance (in shares) at Jun. 30, 2017			45,121,000
Net loss	(21,938)				(21,938)
Shares issued or canceled in connection with employee stock incentive plans and related tax effect (in shares)			741,000
Shares issued in connection with exercises of employee stock options	4			4
Shares issued in connection with exercises of employee stock options (in shares)			3,000
Share-based compensation expense	3,349			3,349
Balance at Jun. 30, 2018	180,254		$ 469	237,957	(51,360)		(6,812)
Balance (in shares) at Jun. 30, 2018			45,865,000
Net loss	(12,440)				(12,440)
Shares issued or canceled in connection with employee stock incentive plans and related tax effect	1		$ (4)	5
Shares issued or canceled in connection with employee stock incentive plans and related tax effect (in shares)			815,000
Shares issued in connection with exercises of employee stock options	6			6
Shares issued in connection with exercises of employee stock options (in shares)			3,000
Share-based compensation expense	3,488			3,488
Balance at Jun. 30, 2019	$ 171,309	$ (601)	$ 465	241,456	(63,800)	$ (601)	(6,812)
Balance (in shares) at Jun. 30, 2019	46,683,269		46,683,000
Net loss	$ (166,328)				(166,328)
Shares issued in connection with exercises of employee stock options			$ (10)	10
Shares issued in connection with exercises of employee stock options (in shares)			658,000
Share-based compensation expense	2,555			2,555
Balance at Jun. 30, 2020	$ 6,935		$ 455	$ 244,021	$ (230,729)		$ (6,812)
Balance (in shares) at Jun. 30, 2020	47,340,652		47,341,000