Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2012

Fair Value Disclosures [Abstract]

Assets and liabilities measured at fair value on a recurring basis

	June 30, 2012								December 31, 2011
	Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3
Assets:
Cash equivalents	$	16,861	$	—	$	16,861	$	—	$	13,619	$	—	$	13,619	$	—
Foreign currency forward contracts	329		—		329		—		545		—		545		—
Total	$	17,190	$	—	$	17,190	$	—	$	14,164	$	—	$	14,164	$	—
Liabilities:
Interest rate swap agreement	$	9,114	$	—	$	9,114	$	—	$	9,175	$	—	$	9,175	$	—
Foreign currency forward contracts	328		—		328		—		480		—		480		—
Total	$	9,442	$	—	$	9,442	$	—	$	9,655	$	—	$	9,655	$	—