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Long-Term Debt (Details 5) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Principal payments due on long-term debt
2013	$ 1,836
2014	145
2016	1,231
Total	$ 3,212	$ 6,555

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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