ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Changes in AOCI by Component
Balance at the beginning of the period	$ 40,735	$ 63	$ 53,722	$ (11,841)
OCI before reclassifications	(13,737)	1,587	(28,131)	15,930
Amounts reclassified from AOCI	1,078	(2,477)	2,485	(4,916)
Other comprehensive (loss) income	(12,659)	(890)	(25,646)	11,014
Balance at the end of the period	28,076	(827)	28,076	(827)
Net Unrealized Gain (Loss) on Cash Flow Hedges
Changes in AOCI by Component
Balance at the beginning of the period	(5,748)	(13,756)	(6,976)	(16,057)
OCI before reclassifications		4,863	(179)	9,603
Amounts reclassified from AOCI	1,078	(2,477)	2,485	(4,916)
Other comprehensive (loss) income	1,078	2,386	2,306	4,687
Balance at the end of the period	(4,670)	(11,370)	(4,670)	(11,370)
Net Unrealized Gain on Investments
Changes in AOCI by Component
Balance at the beginning of the period	46,483	13,819	60,698	4,216
OCI before reclassifications	(13,737)	(3,276)	(27,952)	6,327
Other comprehensive (loss) income	(13,737)	(3,276)	(27,952)	6,327
Balance at the end of the period	$ 32,746	$ 10,543	$ 32,746	$ 10,543

- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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