Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2016

Fair Value Disclosures [Abstract]

Summary of Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following tables present information about the Company’s assets and liabilities measured at fair value on a recurring basis as of December 31 (in thousands):

	2016		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Cash equivalents	$	531,519	$	426,266	$	105,253	$	—
Marketable securities	43,638		38,119		5,519		—
Derivatives	29,034		—		29,034		—
Total	$	604,191	$	464,385	$	139,806	$	—
Liabilities:
Derivatives	$	142	$	—	$	142	$	—

	2015		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Cash equivalents	$	555,910	$	390,706	$	165,204	$	—
Marketable securities	81,448		36,256		45,192		—
Derivatives	16,235		—		16,235		—
Total	$	653,593	$	426,962	$	226,631	$	—
Liabilities:
Derivatives	$	1,300	$	—	$	1,300	$	—