OFFSETTING OF ASSETS AND LIABILITIES (Details) (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 Assets	$ 207,181	$ 207,876
Net Amounts of Assets Presented in the Statement of Financial Position	207,181	207,876
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 Received	23,039	10,700
Total derivatives, subject to a master netting arrangement or similar arrangement, Net Amount	129,460	144,689
Total derivatives, not subject to a master netting arrangement or similar arrangement
Total derivatives, not subject to a master netting arrangement or similar arrangement	2,507	2,444
Total derivatives
Gross Amounts of Recognized Assets	209,688	210,320
Net Amounts of Assets Presented in the Statement of Financial Position	209,688	210,320
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 Received	23,039	10,700
Total derivatives, Net Amount	131,967	147,133
Free-Standing derivatives
Total derivatives, subject to a master netting arrangement or similar arrangement
Gross Amounts of Recognized Assets	142,090	110,983
Net Amounts of Assets Presented in the Statement of Financial Position	142,090	110,983
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 Received	23,039	10,700
Total derivatives, subject to a master netting arrangement or similar arrangement, Net Amount	64,369	47,796
Embedded derivative - Modco reinsurance treaties
Total derivatives, subject to a master netting arrangement or similar arrangement
Gross Amounts of Recognized Assets	1,226	1,517
Net Amounts of Assets Presented in the Statement of Financial Position	1,226	1,517
Total derivatives, subject to a master netting arrangement or similar arrangement, Net Amount	1,226	1,517
Embedded derivative - GMWB
Total derivatives, subject to a master netting arrangement or similar arrangement
Gross Amounts of Recognized Assets	63,865	95,376
Net Amounts of Assets Presented in the Statement of Financial Position	63,865	95,376
Total derivatives, subject to a master netting arrangement or similar arrangement, Net Amount	$ 63,865	$ 95,376