Fair Value Measurements - Recurring basis Level 3 rollforward (Details 2) - Recurring basis - Level 3 - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Recurring Level 3 financial assets and liabilities
Balance at the beginning of the period		$ 5,878
Net income		0
Other comprehensive income		(28)
Settlements		(488)
Balance at the end of the period		5,362
Total gains (losses) for the period included in net income attributable to the change in unrealized gains and losses relating to assets and liabilities		0
Fixed maturities available-for-sale, Corporate debt securities
Recurring Level 3 financial assets and liabilities
Balance at the beginning of the period	$ 4,538	5,842
Net income	0	0
Other comprehensive income	366	(28)
Settlements	(598)	(485)
Transfers into Level 3	11,236
Balance at the end of the period	15,542	5,329
Total gains (losses) for the period included in net income attributable to the change in unrealized gains and losses relating to assets and liabilities	0	0
Fixed maturities available-for-sale, Asset-backed securities
Recurring Level 3 financial assets and liabilities
Balance at the beginning of the period		36
Net income		0
Other comprehensive income		0
Settlements		(3)
Balance at the end of the period		33
Total gains (losses) for the period included in net income attributable to the change in unrealized gains and losses relating to assets and liabilities		0
Embedded Derivative Financial Instruments
Recurring Level 3 financial assets and liabilities
Balance at the beginning of the period	11,257	6,407
Net income	10,450	2,770
Other comprehensive income	0	0
Settlements	0	0
Transfers into Level 3	0
Balance at the end of the period	21,707	9,177
Total gains (losses) for the period included in net income attributable to the change in unrealized gains and losses relating to assets and liabilities	$ 10,450	$ 2,770