Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (3,551)	$ (18,898)	$ (4,451)	$ (21,763)
Unrealized investment gains (losses):
Unrealized investment gains (losses) during the period	(352)	377	(2,574)	1,281
Income tax (benefit) expense	0	117	0	398
Unrealized investment gains (losses), net of tax	(352)	260	(2,574)	883
Less: reclassification adjustments to:
Net realized investment gains (losses) included in net income (loss)	(18)	7	(22)	57
Income tax (benefit) expense	0	0	0	0
Total reclassifications included in net income (loss), net of tax	(18)	7	(22)	57
Other comprehensive income (loss)	(334)	253	(2,552)	826
Total comprehensive income (loss)	$ (3,885)	$ (18,645)	$ (7,003)	$ (20,937)