3. Changes in Accumulated Other Comprehensive Income: Schedule of Components of Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Text Block [Abstract]
Other comprehensive income, before tax amount, beginning	$ (43)	$ 106	$ (97)	$ (29)
Other comprehensive income, Taxes, beginning	14	(35)	33	10
Other comprehensive income, Net of tax Amount, beginning	(29)	71	(64)	(19)
Unrealized holding gain arising during period, before tax amount	8	(5)	62	130
Unrealized holding gain arising during period, taxes	(3)	1	(22)	(44)
Unrealized holding gain arising during period, net of tax amount	5	(4)	40	86
Less: reclassification adjustment for gains(losses) realized in net loss, before tax amount	0	0	0	0
Less: reclassification adjustment for gains(losses) realized in net loss, taxes	0	0	0	0
Less: reclassification adjustment for gains(losses) realized in net loss, net of tax amount	0	0	0	0
Other comprehensive loss, net, before tax amount	(35)	(5)	0	130
Other comprehensive loss, net, taxes	(11)	1	0	(44)
Other comprehensive loss, net, net after tax amount	(24)	(4)	0	86
Other comprehensive income, before tax amount, ending	(35)	101	(35)	101
Other comprehensive income, Taxes, ending	11	(34)	11	(34)
Other comprehensive income, Net of tax Amount, ending	$ (24)	$ 67	$ (24)	$ 67

Amount, before tax and adjustment, of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale.

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Amount, after tax and before adjustment, of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale.

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Amount before tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

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