Stockholders' Equity (Details) (USD $)	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Balance	$ 69,818,000	$ 77,365,000	$ 71,955,000
Restricted stock grants	0	0	0
Restricted stock forfeitures	0	0	0
Stock based compensation expense	736,000	775,000	794,000
Stock options exercised	286,000	79,000
Purchase of treasury stock		(966,000)	(877,000)
Tax asset from vested restricted stock and stock options exercised	27,000	17,000	(34,000)
Expiration of non-qualified stock options	(133,000)
Net income	6,700,000	1,982,000	5,527,000
Dividends	(6,725,000)	(9,434,000)
Balance	70,709,000	69,818,000	77,365,000
Common Stock [Member]
Balance	31,294,000	30,423,000	29,663,000
Balance (in shares)	8,766,333	8,727,143	8,694,843
Restricted stock grants	0	0	0
Restricted stock grants (in shares)	32,300	40,300	33,000
Restricted stock forfeitures	0	0	0
Restricted stock forfeitures (in shares)	(460)	(12,360)	(700)
Stock based compensation expense	736,000	775,000	794,000
Stock options exercised	286,000	79,000
Stock options exercised (in shares)	29,930	11,250
Purchase of treasury stock		0	0
Purchase of treasury stock (in shares)		0	0
Tax asset from vested restricted stock and stock options exercised	27,000	17,000	(34,000)
Expiration of non-qualified stock options	(133,000)
Net income	0	0	0
Dividends	0	0
Balance	32,210,000	31,294,000	30,423,000
Balance (in shares)	8,828,103	8,766,333	8,727,143
Treasury Stock [Member]
Balance	(1,926,000)	(960,000)	(83,000)
Balance (in shares)	202,075	108,121	9,492
Restricted stock grants	0	0	0
Restricted stock grants (in shares)	0	0	0
Restricted stock forfeitures	0	0	0
Restricted stock forfeitures (in shares)	0	0	0
Stock based compensation expense	0	0	0
Stock options exercised	0	0
Stock options exercised (in shares)	0	0
Purchase of treasury stock		(966,000)	(877,000)
Purchase of treasury stock (in shares)		93,954	98,629
Tax asset from vested restricted stock and stock options exercised	0	0	0
Expiration of non-qualified stock options	0
Net income	0	0	0
Dividends	0	0
Balance	(1,926,000)	(1,926,000)	(960,000)
Balance (in shares)	202,075	202,075	108,121
Retained Earnings [Member]
Balance	40,450,000	47,902,000	42,375,000
Restricted stock grants	0	0	0
Restricted stock forfeitures	0	0	0
Stock based compensation expense	0	0	0
Stock options exercised	0	0
Purchase of treasury stock		0	0
Tax asset from vested restricted stock and stock options exercised	0	0	0
Expiration of non-qualified stock options	0
Net income	6,700,000	1,982,000	5,527,000
Dividends	(6,725,000)	(9,434,000)
Balance	$ 40,425,000	$ 40,450,000	$ 47,902,000