Long-Term Investments (Cost-Method Investments) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Schedule of Cost-method Investments [Line Items]
Cost-method investments, carrying value	$ 39,028		$ 41,231
Cost-method investments, fair value	42,026		44,769
Cash distributions from cost method investments	(1,000)	$ (371)
Purchase of long-term investments	50	$ 5,000
Reinsurance Company
Schedule of Cost-method Investments [Line Items]
Purchase of long-term investments	5,000
Investments partnerships
Schedule of Cost-method Investments [Line Items]
Cost-method investments, carrying value	38,527		40,730
Cost-method investments, fair value	41,522		44,217
Real estate partnership
Schedule of Cost-method Investments [Line Items]
Cost-method investments, carrying value	501		501
Cost-method investments, fair value	$ 504		$ 552