Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2015

Fair Value Disclosures [Abstract]

Assets And Liabilities Measured At Fair Value

The following table presents information about the Company’s assets and liabilities measured at fair value:

			Fair Value Measurements at March 31, 2015
	Total		Level 1		Level 2		Level 3
Assets
Cash equivalents	$	277,652	$	277,652	$	—	$	—
Auction rate securities	1,130		—		—		1,130
Total assets	$	278,782	$	277,652	$	—	$	1,130
Liabilities
Contingent purchase consideration	$	83	$	—	$	—	$	83
Interest rate swaps	85		—		85		—
Total liabilities	$	168	$	—	$	85	$	83
			Fair Value Measurements at December 31, 2014
	Total		Level 1		Level 2		Level 3
Assets
Cash equivalents	$	266,011	$	266,011	$	—	$	—
Auction rate securities	1,128		—		—		1,128
Total assets	$	267,139	$	266,011	$	—	$	1,128
Liabilities
Contingent purchase consideration	$	98	$	—	$	—	$	98
Interest rate swaps	151		—		151		—
Total liabilities	$	249	$	—	$	151	$	98

Fair Value Of Auction Rate Securities

	Three Months Ended March 31,
	2015			2014
Auction Rate Securities
Balance, beginning of period	$	1,128		$	1,120
Change in fair value and accretion	2			2
Balance, end of period	$	1,130		$	1,122
Contingent Purchase Consideration
Balance, beginning of period	$	98		$	375
Change in fair value and currency fluctuations	(15		)	(9		)
Balance, end of period	$	83		$	366