Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2012

Fair Value Disclosures [Abstract]

Assets and liabilities measured at fair value on a recurring basis

	March 31, 2012								December 31, 2011
	Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3
Assets:
Cash equivalents	$	15,478	$	—	$	15,478	$	—	$	13,619	$	—	$	13,619	$	—
Foreign currency forward contracts	987		—		987		—		545		—		545		—
Total	$	16,465	$	—	$	16,465	$	—	$	14,164	$	—	$	14,164	$	—
Liabilities:
Interest rate swap agreement	$	8,856	$	—	$	8,856	$	—	$	9,175	$	—	$	9,175	$	—
Foreign currency forward contracts	307		—		307		—		480		—		480		—
Total	$	9,163	$	—	$	9,163	$	—	$	9,655	$	—	$	9,655	$	—