CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Total
Balance, beginning at Jun. 30, 2019	$ 39	$ 317,023	$ 32,075	$ (615)	$ (14,481)	$ 334,041
Balance, beginning (in shares) at Jun. 30, 2019	38,970
Increase (Decrease) in Shareholders' Equity
Shares issued in connection with share-based compensation plans	$ 1	595				596
Shares issued in connection with share-based compensation plans (in shares)	882
Share-based compensation		6,466				6,466
Purchase of treasury stock					(1,823)	(1,823)
Other comprehensive income (Loss)				37		37
Purchase of capped call		(7,072)				(7,072)
Net loss			(7,073)			(7,073)
Balance, ending at Dec. 31, 2019	$ 40	317,012	25,002	(578)	(16,304)	325,172
Balance, ending (in shares) at Dec. 31, 2019	39,852
Balance, beginning at Sep. 30, 2019	$ 40	314,645	19,918	(661)	(15,838)	318,104
Balance, beginning (in shares) at Sep. 30, 2019	39,630
Increase (Decrease) in Shareholders' Equity
Shares issued in connection with share-based compensation plans		360				360
Shares issued in connection with share-based compensation plans (in shares)	222
Share-based compensation		2,007				2,007
Purchase of treasury stock					(466)	(466)
Other comprehensive income (Loss)				83		83
Net loss			5,084			5,084
Balance, ending at Dec. 31, 2019	$ 40	317,012	25,002	(578)	(16,304)	325,172
Balance, ending (in shares) at Dec. 31, 2019	39,852
Balance, beginning at Jun. 30, 2020	$ 40	321,164	(1,291)	(627)	(16,390)	302,896
Balance, beginning (in shares) at Jun. 30, 2020	39,963
Increase (Decrease) in Shareholders' Equity
Shares issued in connection with share-based compensation plans	$ 1	442				443
Shares issued in connection with share-based compensation plans (in shares)	869
Share-based compensation		5,333				5,333
Purchase of treasury stock					(999)	(999)
Other comprehensive income (Loss)				32		32
Net loss			(178,447)			(178,447)
Balance, ending at Dec. 31, 2020	$ 41	326,939	(179,738)	(595)	(17,389)	129,258
Balance, ending (in shares) at Dec. 31, 2020	40,832
Balance, beginning at Sep. 30, 2020	$ 41	324,788	(7,790)	(548)	(17,176)	299,315
Balance, beginning (in shares) at Sep. 30, 2020	40,687
Increase (Decrease) in Shareholders' Equity
Shares issued in connection with share-based compensation plans		160				160
Shares issued in connection with share-based compensation plans (in shares)	145
Share-based compensation		1,991				1,991
Purchase of treasury stock					(213)	(213)
Other comprehensive income (Loss)				(47)		(47)
Net loss			(171,948)			(171,948)
Balance, ending at Dec. 31, 2020	$ 41	$ 326,939	$ (179,738)	$ (595)	$ (17,389)	$ 129,258
Balance, ending (in shares) at Dec. 31, 2020	40,832