FAIR VALUE MEASUREMENTS (Tables)

3 Months Ended

Mar. 31, 2014

FAIR VALUE MEASUREMENTS

Schedule of assets measured at fair value on recurring basis

	As of March 31, 2014
	Fair Value Measurements Using
	Quoted Prices in		Significant Other		Significant
	Active Markets for		Observable		Unobservable
	Identical Assets		Inputs		Inputs
(in thousands)	(Level 1)		(Level 2)		(Level 3)		Total
Total trading securities	$	—	$	—	$	—	$	—
Available-for-sale securities
U.S. agency	$	—	$	1,997	$	—	$	1,997
Corporate	—		565,581		—		565,581
Mortgage-backed	—		239,148		—		239,148
ABS/CMBS*	—		105,806		—		105,806
Non-U.S. govt. & agency	—		14,588		—		14,588
U.S. government	—		18,395		—		18,395
Municipal	—		521,767		—		521,767
Equity	426,680		—		—		426,680
Total available-for-sale securities	$	426,680	$	1,467,282	$	—	$	1,893,962
Total	$	426,680	$	1,467,282	$	—	$	1,893,962

*Asset-backed & commercial mortgage-backed

	As of December 31, 2013
	Fair Value Measurements Using
	Quoted Prices in		Significant Other		Significant
	Active Markets for		Observable		Unobservable
	Identical Assets		Inputs		Inputs
(in thousands)	(Level 1)		(Level 2)		(Level 3)		Total
Total trading securities	$	—	$	—	$	—	$	—
Available-for-sale securities
U.S. agency	$	—	$	10,298	$	—	$	10,298
Corporate	—		526,038		—		526,038
Mortgage-backed	—		244,416		—		244,416
ABS/CMBS*	—		106,309		—		106,309
Non-U.S. govt. & agency	—		13,678		—		13,678
U.S. government	—		17,303		—		17,303
Municipal	—		522,010		—		522,010
Equity	418,654		—		—		418,654
Total available-for-sale securities	$	418,654	$	1,440,052	$	—	$	1,858,706
Total	$	418,654	$	1,440,052	$	—	$	1,858,706

*Asset-backed & commercial mortgage-backed