INVESTMENTS (Details 2) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Available-for-sale
Amortized Cost	$ 1,194,129	$ 1,085,728
Gross Unrealized Gains	61,160	64,234
Gross Unrealized Losses	(3,838)	(3,645)
Fair Value	1,251,451	1,146,317
Held-to-maturity
Amortized Cost/Carrying Value	161,756	260,226
Gross Unrecognized Gains	392	1,219
Gross Unrecognized Losses	(2,173)	(464)
Fair Value	159,975	260,981
U.S. Agency
Available-for-sale
Amortized Cost	73,125	112,975
Gross Unrealized Gains	471	844
Gross Unrealized Losses	(165)
Fair Value	73,431	113,819
Held-to-maturity
Amortized Cost/Carrying Value	145,102	243,571
Gross Unrecognized Gains	271	1,085
Gross Unrecognized Losses	(1,684)
Fair Value	143,689	244,656
Corporate
Available-for-sale
Amortized Cost	493,373	439,079
Gross Unrealized Gains	29,409	31,640
Gross Unrealized Losses	(2,382)	(3,619)
Fair Value	520,400	467,100
Held-to-maturity
Amortized Cost/Carrying Value	15,000	15,000
Gross Unrecognized Losses	(489)	(464)
Fair Value	14,511	14,536
Mortgage-backed
Available-for-sale
Amortized Cost	251,932	233,134
Gross Unrealized Gains	15,718	15,852
Fair Value	267,650	248,986
ABS/CMO
Available-for-sale
Amortized Cost	71,770	54,325
Gross Unrealized Gains	2,677	2,628
Gross Unrealized Losses	(51)
Fair Value	74,396	56,953
Non-U.S. govt. & agency
Available-for-sale
Amortized Cost	8,406	6,403
Gross Unrealized Gains	298	294
Gross Unrealized Losses	(6)
Fair Value	8,698	6,697
U.S. Government
Available-for-sale
Amortized Cost	15,712	15,721
Gross Unrealized Gains	381	459
Gross Unrealized Losses	(19)	(8)
Fair Value	16,074	16,172
States, political subdivisions, and revenues
Available-for-sale
Amortized Cost	279,811	224,091
Gross Unrealized Gains	12,206	12,517
Gross Unrealized Losses	(1,215)	(18)
Fair Value	290,802	236,590
Held-to-maturity
Amortized Cost/Carrying Value	1,654	1,655
Gross Unrecognized Gains	121	134
Fair Value	$ 1,775	$ 1,789

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This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

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