Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	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 (loss)					(14,033)	(14,033)
Other comprehensive income
Stock compensation awards (in shares)	37
Stock compensation awards	$ 180					180
Restricted stock units issued (in shares)	97
Restricted stock units issued
Shares issued for deferred compensation (in shares)	43
Shares issued for deferred compensation	$ 189					189
Activity of treasury shares, net (in shares)		42
Activity of treasury shares, net		$ 549				549
Deferred stock compensation			(542)			(542)
Stock-based compensation expense	727					727
Dividends — $0.20 per share					(2,587)	(2,587)
Cumulative effect of adoption of accounting guidance					591	591
Balance (in shares) at Dec. 31, 2018	26,061	(200)
Balance at Dec. 31, 2018	$ 125,200	$ (1,561)	1,591		(905)	124,325
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 (loss)					6,218	6,218
Other comprehensive income				6		6
Stock compensation awards (in shares)	36
Stock compensation awards	$ 150					150
Restricted stock units issued (in shares)	18
Restricted stock units issued
Shares issued for deferred compensation (in shares)	10
Shares issued for deferred compensation	$ 47					47
Activity of treasury shares, net (in shares)		87
Activity of treasury shares, net		$ 660				660
Deferred stock compensation			(660)			(660)
Stock-based compensation expense	597					597
Dividends — $0.20 per share					(2,643)	(2,643)
Cumulative effect of adoption of accounting guidance					(428)	(428)
Stock options exercised, net (in shares)	6
Stock options exercised, net	$ 29					29
Balance (in shares) at Dec. 31, 2019	26,246	(122)
Balance at Dec. 31, 2019	$ 126,552	$ (808)	$ 808	$ 22	$ (2,661)	$ 123,913