FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Jun. 30, 2013

FAIR VALUE MEASUREMENTS

Schedule of assets measured at fair value on recurring basis

	As of June 30, 2013
	Fair Value Measurements Using
	Quoted Prices in		Significant Other		Significant
	Active Markets for		Observable		Unobservable
(in thousands)	Identical Assets		Inputs		Inputs
Description	(Level 1)		(Level 2)		(Level 3)		Total
Trading securities
Corporate	$	—	$	—	$	—	$	—
Mortgage-backed	—		—		—		—
ABS/CMBS*	—		—		—		—
U.S. government	—		—		—		—
Total trading securities	$	—	$	—	$	—	$	—
Available-for-sale securities
U.S. agency	$	—	$	8,588	$	—	$	8,588
Corporate	—		509,751		—		509,751
Mortgage-backed	—		263,455		—		263,455
ABS/CMBS*	—		93,421		—		93,421
Non-U.S. govt. & agency	—		8,849		—		8,849
U.S. government	—		17,255		—		17,255
Municipal	—		498,191		—		498,191
Equity	416,814		—		—		416,814
Total available-for-sale securities	$	416,814	$	1,399,510	$	—	$	1,816,324
Total	$	416,814	$	1,399,510	$	—	$	1,816,324

* Asset-backed & commercial mortgage-backed

	As of December 31, 2012
	Fair Value Measurements Using
	Quoted Prices in		Significant Other		Significant
	Active Markets for		Observable		Unobservable
(in thousands)	Identical Assets		Inputs		Inputs
Description	(Level 1)		(Level 2)		(Level 3)		Total
Trading securities
Corporate	$	—	$	—	$	—	$	—
Mortgage-backed	—		7		—		7
ABS/CMBS*	—		—		—		—
U.S. government	—		—		—		—
Total trading securities	$	—	$	7	$	—	$	7
Available-for-sale securities
U.S. agency	$	—	$	11,759	$	—	$	11,759
Corporate	—		580,708		—		580,708
Mortgage-backed	—		250,387		—		250,387
ABS/CMBS*	—		77,329		—		77,329
Non-U.S. govt. & agency	—		9,367		—		9,367
U.S. government	—		16,713		—		16,713
Municipal	—		432,319		—		432,319
Equity	375,788		—		—		375,788
Total available-for-sale securities	$	375,788	$	1,378,582	$	—	$	1,754,370
Total	$	375,788	$	1,378,589	$	—	$	1,754,377

* Asset-backed & commercial mortgage-backed