Earnings Per Share: Schedule of Earnings Per Share, Basic and Diluted (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Income (Numerator), basic and diluted earnings per share	$ 5,257	$ 4,870	$ 6,940	$ 8,730	$ 4,306	$ 2,332	$ 1,854	$ 2,318	$ 25,797	$ 10,810	$ 13,220
Basic EPS, Shares (Denominator)									10,601,145	11,222,797	11,389,106
Diluted EPS, Shares (Denominator)									10,835,200	11,287,205	11,415,541
Basic EPS, Per-Share Amount (in dollars per share)	$ 0.51	$ 0.46	$ 0.65	$ 0.81	$ 0.39	$ 0.21	$ 0.16	$ 0.20	$ 2.43	$ 0.96	$ 1.16
Diluted EPS, Per-Share Amount (in dollars per share)	$ 0.49	$ 0.45	$ 0.64	$ 0.80	$ 0.39	$ 0.21	$ 0.16	$ 0.20	$ 2.38	$ 0.96	$ 1.16
Stock Options
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Effect of dilutive shares									160,861	23,941	554
Restricted Stock
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Effect of dilutive shares									73,194	40,467	25,881