Unaudited Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Unaudited Condensed Consolidated Statements of Comprehensive Income (Loss) [Abstract]
Net income (loss)	$ (12,325)	$ 7,434	$ (9,508)	$ 1,847
Unrealized net gains (losses) on fixed income securities:
Unrealized net gains (losses) arising during the period	(766)	4,862	(4,815)	15,999
Less: reclassification adjustment for net gains included in net income (loss)	385	2,240	1,483	4,562
Change in unrealized gains (losses) on investments	(1,151)	2,622	(6,298)	11,437
Foreign currency translation adjustments	202	57	(209)	510
Other comprehensive income (loss)	(949)	2,679	(6,507)	11,947
Comprehensive income (loss)	$ (13,274)	$ 10,113	$ (16,015)	$ 13,794

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners.

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