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Borrowing Arrangements (Details 2) In Thousands, unless otherwise specified	Mar. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Mar. 31, 2013 U.S. Credit Facility Borrowings USD ($)	Dec. 31, 2012 U.S. Credit Facility Borrowings USD ($)	Mar. 31, 2013 Belgian Loan Borrowings USD ($)	Mar. 31, 2013 Belgian Loan Borrowings EUR (€)	Dec. 31, 2012 Belgian Loan Borrowings USD ($)	Dec. 31, 2012 Belgian Loan Borrowings EUR (€)
Long-term Debt
Long-term Debt			$ 47,900	$ 44,250	$ 153	€ 120	$ 158	€ 120
Total	$ 48,053	$ 44,408

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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