Intangible Assets and Mortgage Servicing Rights: Schedule of Mortgage Servicing Rights (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
Mortgage Servicing Rights Balance, beginning of period	$ 5,870		$ 5,320		$ 5,584		$ 5,441
Mortgage Servicing Rights Amounts capitalized	940		385		1,853		653
Mortgage Servicing Rights Amortization	(608)	[1]	(336)	[1]	(1,235)	[1]	(725)	[1]
Mortgage Servicing Rights Balance, end of the period	$ 6,202		$ 5,369		$ 6,202		$ 5,369

[1] Amortization of mortgage servicing rights is recorded as a reduction of loan servicing income and any unamortized balance is fully written off if the loan repays in full.