5. Investment Securities: Schedule of Unrealized Loss on Investments (Details) (USD $) In Thousands, unless otherwise specified	0 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	33	5
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 8,544	$ 999
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	(322)	(5)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	8,224	999
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss	(322)	(5)
US Government Agencies Debt Securities
Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	15	3
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	3,917	746
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	(180)	(4)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	3,917	746
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss	(180)	(4)
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	18	2
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	4,307	253
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	(142)	(1)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	4,307	253
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss	$ (142)	$ (1)