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	$ 265,391	$ 307,116
Net Amounts of Assets Presented in the Statement of Financial Position	265,391	307,116
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	187,670	243,929
Total derivatives, not subject to a master netting arrangement or similar arrangement
Total derivatives, not subject to a master netting arrangement or similar arrangement	376	451
Total derivatives
Gross Amounts of Recognized Assets	265,767	307,567
Net Amounts of Assets Presented in the Statement of Financial Position	265,767	307,567
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	188,046	244,380
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	122,075	194,616
Net Amounts of Assets Presented in the Statement of Financial Position	122,075	194,616
Total derivatives, subject to a master netting arrangement or similar arrangement, Net Amount	$ 122,075	$ 194,616