Stockholders' Equity Note Disclosure [Text Block]: Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Accumulated other comprehensive income (loss)	$ (4,598)
Cumulative Effect of New Accounting Principle in Period of Adoption	(413)
Other Comprehensive Income (Loss), Net of Tax	(4,037)	$ 2,521
Accumulated other comprehensive income (loss)	(8,985)
Accumulated Net Investment Gain (Loss) Attributable to Parent
Accumulated other comprehensive income (loss)	(4,598)	(6,964)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(3,901)	2,669
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	136	148
Other Comprehensive Income (Loss), Net of Tax	(4,037)	2,521
Accumulated other comprehensive income (loss)	(8,985)	(4,443)
Accumulated Net Investment Gain (Loss) Attributable to Parent | Accounting Standards Update 2016-01
Cumulative Effect of New Accounting Principle in Period of Adoption	$ (350)	$ 0