Stockholders' Equity (Details) (USD $)	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Balance	$ 77,365,000	$ 71,955,000	$ 66,468,000
Restricted stock grants	0	0	0
Restricted stock forfeitures	0	0
Stock based compensation on expense	775,000	794,000	641,000
Stock options exercised	79,000
Stock options exercised (in shares)	11,250
Purchase of Treasury Stock	(966,000)	(877,000)	(83,000)
Tax liability from vested restricted stock		(34,000)	(25,000)
Tax asset from vested restricted stock and stock options exercised	17,000
Net income	1,982,000	5,527,000	4,954,000
Dividends ($1.10 per share)	(9,434,000)
Balance	69,818,000	77,365,000	71,955,000
Common Stock [Member]
Balance	30,423,000	29,663,000	29,047,000
Balance (in shares)	8,727,143	8,694,843	8,645,093
Restricted stock grants	0	0	0
Restricted stock grants (in shares)	40,300	33,000	49,750
Restricted stock forfeitures	0	0
Restricted stock forfeitures (in shares)	(12,360)	(700)
Stock based compensation on expense	775,000	794,000	641,000
Stock options exercised	79,000
Stock options exercised (in shares)	11,250
Purchase of Treasury Stock	0	0	0
Purchase of Treasury Stock (in shares)	0	0	0
Tax liability from vested restricted stock		(34,000)	(25,000)
Tax asset from vested restricted stock and stock options exercised	17,000
Net income	0	0	0
Dividends ($1.10 per share)	0
Balance	31,294,000	30,423,000	29,663,000
Balance (in shares)	8,766,333	8,727,143	8,694,843
Treasury Stock [Member]
Balance	(960,000)	(83,000)	0
Balance (in shares)	108,121	9,492	0
Restricted stock grants	0	0	0
Restricted stock grants (in shares)	0	0	0
Restricted stock forfeitures	0	0
Restricted stock forfeitures (in shares)	0	0
Stock based compensation on expense	0	0	0
Stock options exercised	0
Purchase of Treasury Stock	(966,000)	(877,000)	(83,000)
Purchase of Treasury Stock (in shares)	93,954	98,629	9,492
Tax liability from vested restricted stock		0	0
Tax asset from vested restricted stock and stock options exercised	0
Net income	0	0	0
Dividends ($1.10 per share)	0
Balance	(1,926,000)	(960,000)	(83,000)
Balance (in shares)	202,075	108,121	9,492
Retained Earnings [Member]
Balance	47,902,000	42,375,000	37,421,000
Restricted stock grants	0	0	0
Restricted stock forfeitures	0	0
Stock based compensation on expense	0	0	0
Stock options exercised	0
Purchase of Treasury Stock	0		0
Tax liability from vested restricted stock		0	0
Tax asset from vested restricted stock and stock options exercised	0
Net income	1,982,000	5,527,000	4,954,000
Dividends ($1.10 per share)	(9,434,000)
Balance	$ 40,450,000	$ 47,902,000	$ 42,375,000