FAIR VALUES OF FINANCIAL INSTRUMENTS (Tables)

12 Months Ended

Dec. 31, 2012

Available-For-Sale Securities Measured at Fair Value

The following is a summary of our available-for-sale securities measured at fair value:

	12/31/12		Level 1		Level 2		Level 3
	(In thousands)
Mutual funds	$	2,023	$	—	$	2,023	$	—
Commercial paper		29,737		—		29,737		—
Asset-backed securities and collateralized mortgage obligations		8,477		—		2,134		6,343
Corporate notes and bonds		5,755		—		5,755		—
Total	$	45,992	$	—	$	39,649	$	6,343
	12/31/11		Level 1		Level 2		Level 3
	(In thousands)
Mutual funds	$	1,923	$	—	$	1,923	$	—
U.S. Government and agency securities		123,210		—		123,210		—
Asset-backed securities and collateralized mortgage obligations		8,131		—		2,101		6,030
Corporate notes and bonds		5,742		—		5,742		—
Total	$	139,006	$	—	$	132,976	$	6,030

Changes in Level Three Instrument Measured on Recurring Basis

The following is a summary of the changes in our Level 3 instrument measured on a recurring basis for the years ended December 31, 2012 and 2011:

	December 31,
	2012			2011
	(In thousands)
Balance at beginning of period	$	6,030		$	7,372
Total realized and unrealized gains		1,674			75
Principal repayments		(1,361	)		(1,417	)
Balance at end of period	$	6,343		$	6,030

Estimated Fair Values of Financial Instruments

The estimated fair values of certain of our financial instruments are as follows:

	December 31, 2012						December 31, 2011
	Carrying Amount			Fair Value			Carrying Amount			Fair Value
	(In thousands)
Balance Sheet Instruments
Cash and cash equivalents	$	640,147		$	640,147		$	570,854		$	570,854
Restricted cash and cash equivalents	$	18,116		$	18,116		$	21,962		$	21,962
Investments	$	45,992		$	45,992		$	139,006		$	139,006
Debt	$	(102,708	)	$	(106,324	)	$	(93,735	)	$	(96,187	)
Derivative contracts	$	21,434		$	21,434		$	(5,029	)	$	(5,029	)