Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock [Member]	Total
Balance at Jun. 30, 2019	$ 861	$ 11,017	$ 101,774	$ (1,006)	$ (277)	$ 112,369
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock repurchases					(631)	(631)
Dividends declared			(2,238)			(2,238)
Net income			18,727			18,727
Other comprehensive income (loss), net of taxes				578		578
Balance at Jun. 30, 2020	861	11,017	118,263	(428)	(908)	128,805
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared			(2,430)			(2,430)
Net income			23,942			23,942
Other comprehensive income (loss), net of taxes				(733)		(733)
Balance at Jun. 30, 2021	$ 861	$ 11,017	$ 139,775	$ (1,161)	$ (908)	$ 149,584