Note 13. Stockholders' Equity: Reclassification out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Net realized investment gains									$ 4,502	$ 3,094	$ 7,688
Net impairment losses recognized in earnings									1,475	228	0
Income taxes (benefits)									9,555	15,904	6,108
Net income (loss)	$ 8,645	$ 4,366	$ 4,637	$ 115,666	$ 5,147	$ 14,888	$ 5,156	$ 5,331	133,314	30,522	16,921
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Net Unrealized Investment Gain (Loss)
Net realized investment gains									4,538	5,202	7,637
Net impairment losses recognized in earnings									1,475	228
Income (loss) before income taxes									3,063	4,974	7,637
Income taxes (benefits)									1,137	1,768	2,386
Net income (loss)									$ 1,926	$ 3,206	$ 5,251