3. Changes in Accumulated Other Comprehensive Income: Schedule of Components of Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Text Block [Abstract]
Other comprehensive income, before tax amount, beginning	$ (81)	$ 66	$ (96)	$ (29)
Other comprehensive income, Taxes, beginning	28	(21)	33	10
Other comprehensive income, Net of tax Amount, beginning	(53)	45	(63)	(19)
Unrealized holding gain arising during period, before tax amount	38	40	53	135
Unrealized holding gain arising during period, taxes	(14)	(14)	(19)	(45)
Unrealized holding gain arising during period, net of tax amount	24	26	34	90
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 income, net, before tax amount	38	40	53	135
Other comprehensive income, net, taxes	(14)	(14)	(19)	(45)
Other comprehensive income, net, net after tax amount	25	26	34	91
Other comprehensive income, before tax amount, ending	(43)	106	(43)	106
Other comprehensive income, Taxes, ending	14	(35)	14	(35)
Other comprehensive income, Net of tax Amount, ending	$ (29)	$ 71	$ (29)	$ 71

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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Amount after 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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Amount of tax expense (benefit) 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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