Debt (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Summarizes the Company's debt
Total debt	$ 60,282	$ 76,247
Current portion	(18,172)	(14,570)
Long-term debt, less current maturities	42,110	61,677
US Term Note [Member]
Summarizes the Company's debt
Interest Rate	2.86%
Total debt	30,406	33,250
Europe Term Note [Member]
Summarizes the Company's debt
Interest Rate	2.57%
Total debt	4,358	4,389
W.E.T. Term Note [Member]
Summarizes the Company's debt
Interest Rate	2.79%
Total debt	20,602	34,903
Bank of China [Member]
Summarizes the Company's debt
Interest Rate	6.90%
Total debt	3,165
Capital Leases [Member]
Summarizes the Company's debt
Interest Rate	5.50%
Total debt	$ 1,751	$ 3,705