Consolidated Statement Of Stockholders' Equity (Unaudited) (USD $) In Thousands, except Share data	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balance at Jun. 30, 2011	$ 104	$ 2,849	$ 195,162	$ 1,507	$ 199,622
Balance (in Shares) at Jun. 30, 2011	10,417,597
Net earnings			4,549		4,549
Other comprehensive income (loss)				(1,237)	(1,237)
Shares issued - Stock options exercised		35			35
Shares issued - Stock options exercised (in Shares)	2,886				2,886
Dividends declared			(11,462)		(11,462)
Balance at Dec. 31, 2011	104	2,884	188,249	270	191,507
Balance (in Shares) at Dec. 31, 2011	10,420,483
Balance at Jun. 30, 2012	104	3,044	192,603	688	196,439
Balance (in Shares) at Jun. 30, 2012	10,433,684
Net earnings			3,347		3,347
Other comprehensive income (loss)				421	421
Shares issued - Stock options exercised		164			164
Shares issued - Stock options exercised (in Shares)	13,543				13,543
Stock based compensation expense		2			2
Dividends declared			(22,983)		(22,983)
Balance at Dec. 31, 2012	$ 104	$ 3,210	$ 172,967	$ 1,109	$ 177,390
Balance (in Shares) at Dec. 31, 2012	10,447,227