SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Tax rate used (as a percent)			35.00%
Changes in the balance of each component of accumulated other comprehensive earnings
Beginning balance			$ 143,170
Ending balance	125,296		125,296
Unrealized Gains and Losses on Available-for-Sale Securities
Changes in the balance of each component of accumulated other comprehensive earnings
Beginning balance	127,242	133,991	143,170	117,325
Other comprehensive earnings before reclassifications	5,203	25,127	(5,354)	50,066
Amounts reclassified from accumulated other comprehensive earnings	(7,149)	(4,080)	(12,520)	(12,353)
Net current-period other comprehensive earnings	(1,946)	21,047	(17,874)	37,713
Ending balance	$ 125,296	$ 155,038	$ 125,296	$ 155,038

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- 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

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 31

-Article 5

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-Name Regulation S-X (SX)

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- Definition

Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Amount after tax, before reclassification adjustments of other comprehensive income (loss).

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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Amount after tax of reclassification adjustments of other comprehensive income (loss).

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