Condensed Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)
Balances, beginning at Jun. 30, 2020	$ 307,889	$ 279	$ 138,966	$ 206,402	$ (29,385)	$ (8,373)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(7,628)	0	0	(7,628)	0	0
Other comprehensive income (loss)	1,223	0	0	0	0	1,223
Issuance of deferred shares	0	0	(9,067)	0	9,067	0
Treasury shares sold to Employee Stock Purchase Plan	155	0	(141)	0	296	0
Treasury shares purchased to satisfy tax withholding obligations	1,549	0	0	0	(1,549)	0
Stock-based compensation expense	4,199	0	4,199	0	0	0
Balances, ending at Dec. 31, 2020	304,289	279	133,957	198,774	(21,571)	(7,150)
Balances, beginning at Sep. 30, 2020	306,020	279	132,687	203,365	(22,342)	(7,969)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(4,591)	0	0	(4,591)	0	0
Other comprehensive income (loss)	819	0	0	0	0	819
Issuance of deferred shares	0	0	(632)	0	632	0
Treasury shares sold to Employee Stock Purchase Plan	73	0	(79)	0	152	0
Treasury shares purchased to satisfy tax withholding obligations	(13)	0	0	0	(13)	0
Stock-based compensation expense	1,981	0	1,981	0	0	0
Balances, ending at Dec. 31, 2020	304,289	279	133,957	198,774	(21,571)	(7,150)
Balances, beginning at Jun. 30, 2021	285,539	279	137,575	175,178	(20,744)	(6,749)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(42,457)	0	0	(42,457)	0	0
Other comprehensive income (loss)	(696)	0	0	0	0	(696)
Issuances of common stock	199	0	(189)	0	388	0
Issuance of deferred shares	0	0	(5,102)	0	5,102	0
Treasury shares sold to Employee Stock Purchase Plan	143	0	(106)	0	249	0
Treasury shares purchased to satisfy tax withholding obligations	(853)	0	0	0	(853)	0
Stock-based compensation expense	3,735	0	3,735	0	0	0
Balances, ending at Dec. 31, 2021	245,610	279	135,913	132,721	(15,858)	(7,445)
Balances, beginning at Sep. 30, 2021	268,298	279	135,308	157,640	(17,385)	(7,544)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(24,919)	0	0	(24,919)	0	0
Other comprehensive income (loss)	99	0	0	0	0	99
Issuances of common stock	199	0	(189)	0	388	0
Issuance of deferred shares	0	0	(1,018)	0	1,018	0
Treasury shares sold to Employee Stock Purchase Plan	67	0	(54)	0	121	0
Stock-based compensation expense	1,866	0	1,866	0	0	0
Balances, ending at Dec. 31, 2021	$ 245,610	$ 279	$ 135,913	$ 132,721	$ (15,858)	$ (7,445)