Fair Values of Financial and Nonfinancial Instruments (Tables)

6 Months Ended

Jun. 30, 2013

Fair Values of Financial and Nonfinancial Instruments

Fair value measurement methods and values for financial instruments measured on a recurring basis

				FAIR VALUE
(in thousands)	HIERARCHY	JUNE 30, 2013		DECEMBER 31, 2012
Marketable securities, available-for-sale
U.S. Treasury securities	Level 1	$	42,664	$	3,099
Obligations of U.S. and local government agencies	Levels 1 and 2	65,005		155,293
Corporate debt securities	Level 2	158,640		165,194
Asset-backed securities	Level 2	28,040		27,314
Short-term pooled investments	Levels 1 and 2	67,845		37,120
Mortgage loans held-for-sale	Level 2	88,393		107,950
Mortgage interest rate lock commitments	Level 2	1,876		4,737
Forward-delivery contracts	Level 2	9,147		(369		)