10. Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2014

Fair Value Disclosures [Abstract]

Fair Value Assets And Liabilities Measured On Recurring Basis

At September 30, 2014 and December 31, 2013, the fair value measurements of our assets and liabilities that we measure on a recurring basis were as follows (in thousands):

	September 30, 2014
			Fair Value Measurements at Reporting Date Using
	Total Fair Value and Carrying Value on Our Balance Sheet		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Cash equivalents:
Money market funds	$	8,756	$	8,756	$	—	$	—
Marketable securities:
Foreign debt	452,565		—		452,565		—
Time deposits	30,000		30,000		—		—
U.S. debt	6,807		—		6,807		—
U.S. government obligations	3,503		—		3,503		—
Restricted investments (excluding restricted cash)	330,196		—		330,196		—
Derivative assets	6,354		—		6,354		—
Total assets	$	838,181	$	38,756	$	799,425	$	—
Liabilities:
Derivative liabilities	$	9,417	$	—	$	9,417	$	—

	December 31, 2013
			Fair Value Measurements at Reporting Date Using
	Total Fair Value and Carrying Value on Our Balance Sheet		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Cash equivalents:
Money market funds	$	2,889	$	2,889	$	—	$	—
Marketable securities:
Foreign debt	364,046		—		364,046		—
Foreign government obligations	25,115		—		25,115		—
U.S. debt	46,439		—		46,439		—
U.S. government obligations	3,502		—		3,502		—
Restricted investments (excluding restricted cash)	279,274		—		279,274		—
Derivative assets	8,278		—		8,278		—
Total assets	$	729,543	$	2,889	$	726,654	$	—
Liabilities:
Derivative liabilities	$	16,204	$	—	$	16,204	$	—

Fair value by balance sheet grouping

The carrying values and fair values of our financial and derivative instruments at September 30, 2014 and December 31, 2013 were as follows (in thousands):

	September 30, 2014				December 31, 2013
	Carrying Value		Fair Value		Carrying Value		Fair Value
Assets:
Marketable securities	$	492,875	$	492,875	$	439,102	$	439,102
Foreign exchange forward contract assets	$	6,354	$	6,354	$	8,278	$	8,278
Restricted investments (excluding restricted cash)	$	330,196	$	330,196	$	279,274	$	279,274
Note receivable — noncurrent	$	8,893	$	9,072	$	9,655	$	9,633
Liabilities:
Long-term debt, including current maturities	$	218,253	$	227,078	$	223,323	$	224,435
Interest rate swap contract liabilities	$	307	$	307	$	703	$	703
Cross-currency swap contract liabilities	$	6,106	$	6,106	$	9,673	$	9,673
Foreign exchange forward contract liabilities	$	3,004	$	3,004	$	5,828	$	5,828