Derivatives (Details - Balance Sheet) $ in Thousands, € in Millions		Jun. 30, 2015 USD ($)	Dec. 31, 2014 USD ($)	Jun. 30, 2014 EUR (€)
Derivative [Line Items]
Derivative Fair Value Of Derivative Asset	[1]	$ 17,901	$ 21,521
Derivative Fair Value Of Derivative Liability	[1]	(34,862)	(27,977)
Fair value net		(16,961)	(6,456)
Derivatives designated as hedges
Derivative [Line Items]
Derivative Fair Value Of Derivative Asset	[1]	9,745
Derivative Fair Value Of Derivative Liability	[1]	0
Fair value net		9,745
Derivatives not designated as hedges
Derivative [Line Items]
Derivative Fair Value Of Derivative Asset	[1]	8,156
Derivative Fair Value Of Derivative Liability	[1]	(34,862)
Fair value net		(26,706)
Foreign exchange forward contracts [Member] | Derivatives designated as hedges
Derivative [Line Items]
Derivative Fair Value Of Derivative Asset		9,745
Derivative Fair Value Of Derivative Liability		0
Net notional exposure		379,045
Fair value net		9,745
Foreign exchange forward contracts [Member] | Derivatives not designated as hedges
Derivative [Line Items]
Derivative Fair Value Of Derivative Asset		7,898	20,033
Derivative Fair Value Of Derivative Liability		(5,927)	(7,446)
Net notional exposure		1,996,675	2,080,276
Fair value net		1,971	12,587
Foreign currency option contracts [Member] | Derivatives not designated as hedges
Derivative [Line Items]
Derivative Fair Value Of Derivative Asset		0	0
Derivative Fair Value Of Derivative Liability		(946)	(1,196)
Net notional exposure		90,786	43,380
Fair value net		(946)	(1,196)
Futures contracts [Member] | Derivatives not designated as hedges
Derivative [Line Items]
Derivative Fair Value Of Derivative Asset		0	846
Derivative Fair Value Of Derivative Liability		(7,811)	(467)
Net notional exposure		3,515,009	2,348,735
Fair value net		(7,811)	379
Insurance-linked securities [Member] | Derivatives not designated as hedges
Derivative [Line Items]
Derivative Fair Value Of Derivative Asset	[2]	14	3
Derivative Fair Value Of Derivative Liability	[2]	(359)	(339)
Net notional exposure	[2]	145,075	145,481
Fair value net	[2]	(345)	(336)
Total return swaps [Member] | Derivatives not designated as hedges
Derivative [Line Items]
Derivative Fair Value Of Derivative Asset		233	485
Derivative Fair Value Of Derivative Liability		(2,298)	(2,007)
Net notional exposure		42,484	42,524
Fair value net		(2,065)	(1,522)
Interest rate swaps [Member] | Derivatives not designated as hedges
Derivative [Line Items]
Derivative Fair Value Of Derivative Asset	[3]	0	0
Derivative Fair Value Of Derivative Liability	[3]	(15,912)	(16,282)
Net notional exposure	[3]	197,889	201,160
Fair value net	[3]	(15,912)	(16,282)
TBAs [Member] | Derivatives not designated as hedges
Derivative [Line Items]
Derivative Fair Value Of Derivative Asset		11	154
Derivative Fair Value Of Derivative Liability		(1,609)	(240)
Net notional exposure		238,255	235,105
Fair value net		$ (1,598)	$ (86)
Original currency | Foreign exchange forward contracts [Member] | Derivatives designated as hedges
Derivative [Line Items]
Net notional exposure | €				€ 350

[1] Amounts include all derivative instruments, irrespective of whether there is a legally enforceable master netting arrangement in place.

[2] At June 30, 2015 and December 31, 2014, insurance-linked securities include a longevity swap for which the notional amount is not reflective of the overall potential exposure of the swap. As such, the Company has included the probable maximum loss under the swap within the net notional exposure as an approximation of the notional amount.

[3] The Company enters into interest rate swaps to mitigate notional exposures on certain total return swaps and certain fixed maturities. Only the notional value of interest rate swaps on fixed maturities is presented separately in the table.