5. Investment Securities: Schedule of Continuous Unrealized Loss Positions on Held-To-Maturity Investments (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Number of Securities	8	19
Less than Twelve Months, Fair Value	$ 1,198	$ 246
Less than 12 Months, Unrealized Losses	(3)	(498)
Twelve Months or Longer, Fair Value	832	4,730
12 Months or Longer, Unrealized Losses	(9)	(77)
Total Fair Value	2,030	4,976
Total Unrealized Losses	$ (12)	$ (81)
U.S. Government agency securities
Number of Securities	5	13
Less than Twelve Months, Fair Value	$ 748	$ 246
Less than 12 Months, Unrealized Losses	(2)	(4)
Twelve Months or Longer, Fair Value	596	3,290
12 Months or Longer, Unrealized Losses	(3)	(57)
Total Fair Value	1,344	3,536
Total Unrealized Losses	$ (5)	$ (61)
Government Sponsored Enterprises residential mortgage-backed securities
Number of Securities	3	6
Less than Twelve Months, Fair Value	$ 450	$ 0
Less than 12 Months, Unrealized Losses	(1)	0
Twelve Months or Longer, Fair Value	236	1,440
12 Months or Longer, Unrealized Losses	(6)	(20)
Total Fair Value	686	1,440
Total Unrealized Losses	$ (7)	$ (20)