Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Restricted Stock Units (RSUs) [Member] Common Stock Including Additional Paid in Capital [Member]	Restricted Stock Units (RSUs) [Member] Treasury Stock [Member]	Restricted Stock Units (RSUs) [Member] Key Executive Deferred Compensation [Member]	Restricted Stock Units (RSUs) [Member] AOCI Attributable to Parent [Member]	Restricted Stock Units (RSUs) [Member] Retained Earnings [Member]	Restricted Stock Units (RSUs) [Member]	Common Stock Including Additional Paid in Capital [Member]	Treasury Stock [Member]	Key Executive Deferred Compensation [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Jun. 30, 2018							25,884	(242)
Balance at Jun. 30, 2018							$ 124,104	$ (2,110)	$ 2,133		$ 15,124	$ 139,251
Net income											1,749	1,749
Other comprehensive income
Stock compensation awards (in shares)	97						17
Stock compensation awards							$ 90					90
Shares issued for deferred compensation (in shares)							27
Shares issued for deferred compensation							$ 126					126
Activity of treasury shares, net (in shares)								16
Activity of treasury shares, net								$ 265				265
Deferred stock compensation									(264)			(264)
Stock-based compensation expense							551					551
Dividends — $0.20 per share											(1,296)	(1,296)
Cumulative effect of adoption of accounting guidance											591	591
Balance (in shares) at Sep. 30, 2018							26,025	(226)
Balance at Sep. 30, 2018							$ 124,871	$ (1,845)	1,869		16,168	141,063
Balance (in shares) at Jun. 30, 2019							26,176	(209)
Balance at Jun. 30, 2019							$ 125,729	$ (1,468)	1,468	16	(5,808)	119,937
Net income											4,475	4,475
Other comprehensive income										(23)		(23)
Stock compensation awards (in shares)	18						21
Stock compensation awards							$ 75					75
Shares issued for deferred compensation (in shares)							7
Shares issued for deferred compensation							$ 33					33
Activity of treasury shares, net (in shares)								36
Activity of treasury shares, net								$ 360				360
Deferred stock compensation									(350)			(350)
Stock-based compensation expense							398					398
Dividends — $0.20 per share											(1,319)	(1,319)
Cumulative effect of adoption of accounting guidance											(428)	(428)
Stock optons exercised, net
Balance (in shares) at Sep. 30, 2019							26,222	(173)
Balance at Sep. 30, 2019							$ 126,235	$ (1,108)	$ 1,118	$ (7)	$ (3,080)	$ 123,158