Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (9,227)	$ (21,542)	$ (8,437)
Unrealized investment gains (losses):
Unrealized investment gains (losses) during the period	(1,825)	1,151	(2,139)
Income tax expense (benefit)	0	356	0
Unrealized investment gains (losses), net of tax	(1,825)	795	(2,139)
Less: reclassification adjustments to:
Net realized investment gains (losses) included in net income (loss)	(55)	78	(877)
Income tax expense (benefit)	0	0	0
Total reclassifications included in net income (loss), net of tax	(55)	78	(877)
Other comprehensive income (loss)	(1,770)	717	(1,262)
Total comprehensive income (loss)	$ (10,997)	$ (20,825)	$ (9,699)