Schedule II-Valuation and Qualifying Accounts - (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Valuation and Qualifying Accounts [Abstract]
Allowance for doubtful accounts, Balance at January 1	$ 862		$ 965		$ 860
Allowance for doubtful accounts, Additions	178	[1]	326	[2]	729
Allowance for doubtful accounts, Deductions	0	[1]	(429)	[2]	(624)
Allowance for doubtful accounts, Balance at December 31	1,040		862		965
Deferred tax asset valuation allowance, Balance at January 1	2,269		1,404		2,693
Deferred tax asset valuation allowance, Additions	233	[3]	1,000	[4]	585
Deferred tax asset valuation allowance, Deductions	(332)	[3]	(135)	[4]	(1,874)
Deferred tax asset valuation allowance, Balance at December 31	2,170		2,269		1,404
Reserves, Balance at January 1			0		575
Reserves, Addtions					0
Reserves, Deductions					(575)
Reserves, Balance at December 31					$ 0

[1] These balances primarily reflect additions to the allowance charged to expense resulting from the normal course of business, less deductions for recovery of accounts that were previously reserved, and additions and deductions for foreign currency translation

[2] These balances primarily reflect additions to the allowance for a customer bankruptcy in the Company's 2011 fourth quarter, less deductions for accounts written off that were previously reserved, and additions and deductions for foreign currency translation

[3] These balances primarily reflect additions for an increase in the valuation reserve associated with certain deferred tax assets related to the Netherlands defined-benefit plan

[4] These balances primarily reflect additions for current year activity, deductions for the expiration of certain unused net operating losses, and additions and deductions for foreign currency translation