Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Restricted Stock Units (RSUs) [Member] Common Stock [Member]	Restricted Stock Units (RSUs) [Member] Treasury Stock [Member]	Restricted Stock Units (RSUs) [Member] Key Executive Deferred Compensation [Member]	Restricted Stock Units (RSUs) [Member] Retained Earnings [Member]	Restricted Stock Units (RSUs) [Member]	Common Stock [Member]	Treasury Stock [Member]	Key Executive Deferred Compensation [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Jun. 30, 2015						24,620,000	(227,000)
Balance at Jun. 30, 2015						$ 106,242	$ (2,145)	$ 2,256	$ 36,599	$ 142,952
Net income									9,482	9,482
Stock compensation awards (in shares)	5,000					23,000
Stock compensation awards						$ 248				248
Activity of treasury shares, net (in shares)							(1,000)
Activity of treasury shares, net							$ (22)			(22)
Deferred stock compensation								150		150
Stock-based compensation expense						$ 2,903				$ 2,903
Stock options exercised, net (in shares)						562,000				561,946
Stock options exercised, net						$ 4,021				$ 4,021
Dividends									(4,214)	(4,214)
Balance (in shares) at Jun. 30, 2016						25,210,000	(228,000)
Balance at Jun. 30, 2016						$ 113,414	$ (2,167)	2,406	41,867	155,520
Net income									3,000	3,000
Stock compensation awards (in shares)	25,000					40,000
Stock compensation awards						$ 409				409
Activity of treasury shares, net (in shares)							(30,000)
Activity of treasury shares, net							$ (290)			(290)
Deferred stock compensation								251		251
Stock-based compensation expense						$ 3,049				$ 3,049
Stock options exercised, net (in shares)						412,000				486,446
Stock options exercised, net						$ 2,612				$ 2,612
Dividends									(5,048)	(5,048)
Stock Warrants Issued						$ 575				575
Balance (in shares) at Jun. 30, 2017						25,687,000	(258,000)
Balance at Jun. 30, 2017						$ 120,059	$ (2,457)	2,657	39,819	160,078
Net income									(19,541)	(19,541)
Stock compensation awards (in shares)	44,000					43,000
Stock compensation awards						$ 319				319
Activity of treasury shares, net (in shares)							16,000
Activity of treasury shares, net							$ 347			347
Deferred stock compensation								(524)		(524)
Stock-based compensation expense						$ 3,012				$ 3,012
Stock options exercised, net (in shares)						43,000				42,939
Stock options exercised, net						$ 285				$ 285
Dividends									(5,154)	(5,154)
Shares issued for deferred compensation (in shares)						67,000
Shares issued for deferred compensation						$ 429				429
Balance (in shares) at Jun. 30, 2018						25,884,000	(242,000)
Balance at Jun. 30, 2018						$ 124,104	$ (2,110)	$ 2,133	$ 15,124	$ 139,251