Earnings Per Share: Schedule of Earnings Per Share Basic and Diluted Table (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Weighted Average Number of Shares Outstanding, Basic	13,501	13,457	13,501	13,457
NET INCOME AVAILABLE TO COMMON SHAREHOLDERS	$ 21,512	$ 5,108	$ 28,863	$ 10,155
BASIC EARNINGS PER COMMON SHARE	$ 1.59	$ 0.38	$ 2.14	$ 0.75
Weighted Average Number of Shares Outstanding, Diluted	13,501	13,457	13,501	13,457
Net effect of dilutive stock options and warrants based on treasury stock method using average market price	98	498	98	531
Diluted shares	13,599	13,955	13,599	13,988
Net Income (Loss) Available to Common Stockholders, Diluted	$ 21,512	$ 5,108	$ 28,863	$ 10,155
DILUTED EARNINGS PER COMMON SHARE	$ 1.58	$ 0.37	$ 2.12	$ 0.73