Stockholders' Equity Note Disclosure [Text Block]: Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Accumulated other comprehensive income (loss)			$ (8,310)
Other Comprehensive Income (Loss), Net of Tax	$ 4,939	$ (2,252)	10,608	$ (6,289)
Accumulated other comprehensive income (loss)	2,298		2,298
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent
Accumulated other comprehensive income (loss)	(2,641)	(8,985)	(8,310)	(4,598)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	5,935	(2,541)	11,077	(6,442)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	996	(289)	469	(153)
Other Comprehensive Income (Loss), Net of Tax	4,939	(2,252)	10,608	(6,289)
Accumulated other comprehensive income (loss)	2,298	(11,237)	2,298	(11,237)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent \| Accounting Standards Update 2016-01
Cumulative Effect of New Accounting Principle in Period of Adoption	$ 0	$ 0	$ 0	$ (350)

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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