Debt (Details) Part 1 (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Debt Instrument
Total Debt	$ 28,167	$ 31,803
Less: Current Portion	(3,717)	(3,803)
Long-Term Portion	24,450	28,000
Committed lines of credit	125,000
Uncommitted lines of credit	87,525
Letters of Credit Outstanding	2,460
Bank guarantees	180
Commitment fees on unused line of credit	241
Covenant restriction, maximum indebtedness to EBITDA	3.00 to 1
Covenant restriction, minimum EBITDA to interest expense	3.50 to 1
Indebtedness to EBITDA ratio	0.35 to 1
EBITDA to interest expense ratio	50.81 to 1
Bank borrowings
Debt Instrument
Total Debt	1	9
Credit facility borrowings, Long-Term
Debt Instrument
Total Debt	28,000	30,000
Collateralized borrowings
Debt Instrument
Total Debt	10	11
Capital lease obligations
Debt Instrument
Total Debt	156	283
Credit facility borrowings, Short-Term
Debt Instrument
Total Debt	$ 0	$ 1,500