Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Dec. 31, 2015
Accumulated Other Comprehensive Income [Abstract]
Net unrealized appreciation on available-for-sale investments					$ 5,595	$ 5,065
Foreign currency translation					(78)	(104)
Accumulated other comprehensive income	$ 5,010	$ 4,675	$ 4,961	$ 4,717	5,517	4,961
Deferred income tax liability					$ 3,000	$ 2,800
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	5,010	4,675	4,961	4,717
Unrealized gain reclassified and recognized in net loss, net of tax	(83)	7	(86)	(307)
Foreign exchange reclassified and recognized in net loss, net of tax		79		341
Total reclassified and recognized in net loss, net of tax	(83)	86	(86)	34
Unrealized gain on marketable securities, net of tax	573	327	616	590
Accumulated currency, net of tax	17	(125)	26	(378)
Total other comprehensive income, net of tax	507	288	556	246
Accumulated other comprehensive income	$ 5,517	$ 4,963	$ 5,517	$ 4,963