Intangible Assets and Mortgage Servicing Rights: Schedule of Core Deposit Intangibles (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2012	Dec. 31, 2011
Core Deposit Intangibles
Core Deposit Intangibles Balance Beginning of Period	$ 6,322	$ 8,598
Core Deposit Intangibles Amortization	(1,075)	(2,276)
Core Deposit Intangibles Balance End of Period	5,247	6,322
Other Intangibles
Core Deposit Intangibles Balance Beginning of Period	9	11
Core Deposit Intangibles Amortization	(4)	(2)
Core Deposit Intangibles Balance End of Period	5	9
Total Intangibles
Core Deposit Intangibles Balance Beginning of Period	6,331	8,609
Core Deposit Intangibles Amortization	(1,079)	(2,278)
Core Deposit Intangibles Balance End of Period	$ 5,252	$ 6,331