SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Federal statutory tax rate (as a percent)			35.00%
Changes in the balance of each component of accumulated other comprehensive earnings
Beginning balance			$ 136,027
Net current-period other comprehensive earnings	19,934	(33,481)	37,671	(15,928)
Ending balance	173,698		173,698
Unrealized Gains and Losses on Available-for-Sale Securities
Changes in the balance of each component of accumulated other comprehensive earnings
Beginning balance	153,764	160,723	136,027	143,170
Other comprehensive earnings before reclassifications	26,714	(30,824)	48,674	(10,557)
Amounts reclassified from accumulated other comprehensive earnings	(6,780)	(2,657)	(11,003)	(5,371)
Net current-period other comprehensive earnings	19,934	(33,481)	37,671	(15,928)
Ending balance	$ 173,698	$ 127,242	$ 173,698	$ 127,242

- 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.

+ References+ Details