Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2014

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 June 30, 2014
	Total		Level 1		Level 2		Level 3
Assets
Cash equivalents	$	239,860	$	239,860	$	—	$	—
Auction rate securities	1,124		—		—		1,124
Total assets	$	240,984	$	239,860	$	—	$	1,124
Liabilities
Contingent purchase consideration	$	357	$	—	$	—	$	357
Interest rate swaps	291		—		291		—
Total liabilities	$	648	$	—	$	291	$	357
			Fair Value Measurements at December 31, 2013
	Total		Level 1		Level 2		Level 3
Assets
Cash equivalents	$	240,159	$	240,159	$	—	$	—
Auction rate securities	1,120		—		—		1,120
Total assets	$	241,279	$	240,159	$	—	$	1,120
Liabilities
Contingent purchase consideration	$	375	$	—	$	—	$	375
Interest rate swaps	423		—		423		—
Total liabilities	$	798	$	—	$	423	$	375

Fair Value Of Auction Rate Securities

	Three Months Ended June 30,						Six Months Ended June 30,
	2014			2013			2014			2013
Auction Rate Securities
Balance, beginning of period	$	1,122		$	1,114		$	1,120		$	1,112
Period transactions	—			—			—			—
Change in fair value and accretion	2			2			4			4
Balance, end of period	$	1,124		$	1,116		$	1,124		$	1,116
Contingent Purchase Consideration
Balance, beginning of period	$	366		$	3,016		$	375		$	3,023
Period transactions	—			—			—			—
Adjustment for determination of final payment	—			(2,457		)	—			(2,464		)
Change in fair value and currency fluctuations	(9		)	—			(18		)	—
Balance, end of period	$	357		$	559		$	357		$	559