Deposits and Customer Repurchase Agreements: Schedule of Deposits by Geographic Concentration (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012
Washington
Total deposits by geographic concentration	$ 2,600,221
Oregon
Total deposits by geographic concentration	600,748
Idaho
Total deposits by geographic concentration	224,780
Total geographic concentration
Total deposits by geographic concentration	$ 3,425,749