OFFSETTING OF ASSETS AND LIABILITIES (Details 2) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Total derivatives, subject to a master netting arrangement or similar arrangement
Gross Amounts of Recognized Liabilities	$ 585,729	$ 457,802
Net Amounts of Liabilities Presented in the Statement of Financial Position	585,729	457,802
Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments	54,682	52,487
Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Paid	46,113	98,359
Total derivatives, subject to a master netting arrangement or similar arrangement, Net Amount	484,934	306,956
Total derivatives
Gross Amounts of Recognized Liabilities	585,729	457,802
Net Amounts of Liabilities Presented in the Statement of Financial Position	585,729	457,802
Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments	54,682	52,487
Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Paid	46,113	98,359
Total derivatives, Net Amount	484,934	306,956
Repurchase agreements
Repurchase agreements	420,490	350,000
Total Liabilities
Gross Amounts of Recognized Liabilities	1,006,219	807,802
Net Amounts of Liabilities Presented in the Statement of Financial Position	1,006,219	807,802
Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments	54,682	52,487
Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Paid	46,113	98,359
Net Amount	905,424	656,956
Free-Standing derivatives
Total derivatives, subject to a master netting arrangement or similar arrangement
Gross Amounts of Recognized Liabilities	100,982	187,172
Net Amounts of Liabilities Presented in the Statement of Financial Position	100,982	187,172
Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments	54,682	52,487
Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Paid	46,113	98,359
Total derivatives, subject to a master netting arrangement or similar arrangement, Net Amount	187	36,326
Embedded derivative - Modco reinsurance treaties
Total derivatives, subject to a master netting arrangement or similar arrangement
Gross Amounts of Recognized Liabilities	318,999	206,918
Net Amounts of Liabilities Presented in the Statement of Financial Position	318,999	206,918
Total derivatives, subject to a master netting arrangement or similar arrangement, Net Amount	318,999	206,918
Embedded derivative - GMWB
Total derivatives, subject to a master netting arrangement or similar arrangement
Gross Amounts of Recognized Liabilities	95,523	38,388
Net Amounts of Liabilities Presented in the Statement of Financial Position	95,523	38,388
Total derivatives, subject to a master netting arrangement or similar arrangement, Net Amount	95,523	38,388
Embedded derivative - FIA
Total derivatives, subject to a master netting arrangement or similar arrangement
Gross Amounts of Recognized Liabilities	69,615	25,324
Net Amounts of Liabilities Presented in the Statement of Financial Position	69,615	25,324
Total derivatives, subject to a master netting arrangement or similar arrangement, Net Amount	69,615	25,324
Embedded derivative - IUL
Total derivatives, subject to a master netting arrangement or similar arrangement
Gross Amounts of Recognized Liabilities	610
Net Amounts of Liabilities Presented in the Statement of Financial Position	610
Total derivatives, subject to a master netting arrangement or similar arrangement, Net Amount	$ 610