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6. Debt (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Debt Disclosure [Abstract]
Current portion of long-term debt obligations	$ 3,801	$ 3,021
Long-term obligations, net of debt discount	6,038	6,104
Total debt	$ 9,839	$ 9,125

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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