FAIR VALUE MEASUREMENTS (Tables)

9 Months Ended

Sep. 30, 2013

FAIR VALUE MEASUREMENTS

Schedule of assets measured at fair value on recurring basis

	As of September 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	$	—	$	8,459	$	—	$	8,459
Corporate	—		491,524		—		491,524
Mortgage-backed	—		251,564		—		251,564
ABS/CMBS*	—		94,007		—		94,007
Non-U.S. govt. & agency	—		11,867		—		11,867
U.S. government	—		17,343		—		17,343
Municipal	—		504,248		—		504,248
Equity	392,156		—		—		392,156
Total available-for-sale securities	$	392,156	$	1,379,012	$	—	$	1,771,168
Total	$	392,156	$	1,379,012	$	—	$	1,771,168

*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