5. Loans and Allowance For Loan Losses: Allowance for Credit Losses on Financing Receivables (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended			3 Months Ended			3 Months Ended				3 Months Ended			3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012	Mar. 31, 2013 Commercial And Industrial	Mar. 31, 2012 Commercial And Industrial	Dec. 31, 2012 Commercial And Industrial	Mar. 31, 2013 Commercial Real Estate	Dec. 31, 2012 Commercial Real Estate	Mar. 31, 2012 Commercial Real Estate	Dec. 31, 2011 Commercial Real Estate	Mar. 31, 2013 Consumer Real Estate	Mar. 31, 2012 Consumer Real Estate	Dec. 31, 2012 Consumer Real Estate	Mar. 31, 2012 Consumer And Other Loans	Mar. 31, 2013 Consumer And Other Loans	Dec. 31, 2012 Consumer And Other Loans
Beginning balance	$ 1,204	$ 867		$ 891	$ 387		$ 308		$ 412	$ 412	$ 5	$ 68
Provision for loan losses	70	30		62	30		(33)				41
Charge-offs	(340)	(41)		(340)								(38)		(3)
Recoveries	3	8		1							2	5		3
Net charge-offs	(337)	(33)		(339)							2	(33)
Ending balance	937	864		614	417		275		412	412	48	35
Period-end amount allocated to loans individually evaluated for impairment	534		843	534		843
Period-end amount allocated to loans collectively evaluated for impairment	403		361	80		48	275	308			48		5
Total allocation	937	864		614	417		275		412	412	48	35
Loans, ending balance: Loans individually evaluated for impairment	2,022		2,344	712		1,021	1,310	1,323
Loans, ending balance: Loans collectively evaluated for impairment	38,956		39,158	3,050		2,713	29,665	30,058			4,527		4,619		1,714	1,768
Total	$ 40,978		$ 41,502	$ 3,762		$ 3,734	$ 30,975	$ 31,381			$ 4,527		$ 4,619		$ 1,714	$ 1,768