Stockholders' Equity Note Disclosure [Text Block]: Reclassification out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Gain (Loss) on Investments	$ 71	$ 172
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	9,054	7,547
Income Tax Expense (Benefit)	2,006	2,538
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	7,048	5,009
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Net Investment Gain (Loss) Attributable to Parent
Gain (Loss) on Investments	171	197
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	171	197
Income Tax Expense (Benefit)	35	49
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 136	$ 148