Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2012

Fair Value Measurements [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

	December 31, 2012								December 31, 2011
	Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3
Assets:
Cash equivalents	$	13,636	$	—	$	13,636	$	—	$	13,619	$	—	$	13,619	$	—
Foreign currency forward contracts not designated as hedging instrument	448		—		448		—		545		—		545		—
Total	$	14,084	$	—	$	14,084	$	—	$	14,164	$	—	$	14,164	$	—
Liabilities:
Interest rate swap agreements	$	8,172	$	—	$	8,172	$	—	$	9,175	$	—	$	9,175	$	—
Foreign currency forward contracts designated as cash flow hedge	421		—		421		—		—		—		—		—
Foreign currency forward contracts not designated as hedging instrument	280		—		280		—		480		—		480		—
Total	$	8,873	$	—	$	8,873	$	—	$	9,655	$	—	$	9,655	$	—