CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]
BALANCE at Jun. 30, 2016	$ 51,273	$ 211	$ 16,622	$ (11,732)	$ 46,172
BALANCE (in shares) at Jun. 30, 2016		21,116,743		(2,329,850)
Stock Options Exercised	(85)	$ 1	(86)	$ 0	0
Stock Options Exercised (in shares)		57,764		0
Stock-based compensation expense	102	$ 0	102	$ 0	0
Net income	5,599	0	0	0	5,599
BALANCE at Jun. 30, 2017	56,889	$ 212	16,638	$ (11,732)	51,771
BALANCE (in shares) at Jun. 30, 2017		21,174,507		(2,329,850)
Repurchase of Treasury Shares	(1,337)	$ 0	0	$ (1,337)	0
Repurchase of Treasury Shares (in shares)		0		(145,395)
Stock Options Exercised	$ 106	$ 0	106	$ 0	0
Stock Options Exercised (in shares)	452	29,820		0
Stock-based compensation expense	$ 146	$ 0	146	$ 0	0
Net income	7,649	0	0	0	7,649
BALANCE at Jun. 30, 2018	$ 63,453	$ 212	$ 16,890	$ (13,069)	$ 59,420
BALANCE (in shares) at Jun. 30, 2018		21,204,327		(2,475,245)