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	(3,037)	0	0	(3,037)	0	0
Other comprehensive income (loss)	404	0	0	0	0	404
Issuance of deferred shares	0	0	(8,435)	0	8,435	0
Treasury shares sold to Employee Stock Purchase Plan	82	0	(62)	0	144	0
Treasury shares purchased to satisfy tax withholding obligations	(1,536)	0	0	0	(1,536)	0
Stock-based compensation expense	2,218	0	2,218	0	0	0
Balances, ending at Sep. 30, 2020	306,020	279	132,687	203,365	(22,342)	(7,969)
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	(17,538)	0	0	(17,538)	0	0
Other comprehensive income (loss)	(795)	0	0	0	0	(795)
Issuance of deferred shares	0	0	(4,084)	0	4,084	0
Treasury shares sold to Employee Stock Purchase Plan	76	0	(52)	0	128	0
Treasury shares purchased to satisfy tax withholding obligations	(853)	0	0	0	(853)	0
Stock-based compensation expense	1,869	0	1,869	0	0	0
Balances, ending at Sep. 30, 2021	$ 268,298	$ 279	$ 135,308	$ 157,640	$ (17,385)	$ (7,544)