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5. Notes Payable (Details) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2014 | Dec. 31, 2013
--- | --- | ---
Total revenues |  |
Third Eye Capital term note | $ 7,349 | $ 7,193
Third Eye Capital revolving credit facility | 31,603 | 38,349
Third Eye Capital revenue participation term note | 9,890 | 9,465
Third Eye Capital acquisition term note | 17,620 | 17,280
Cilion shareholder Seller note payable | 5,083 | 4,869
State Bank of India secured term loan | 6,066 | 5,857
Subordinated notes | 4,982 | 5,317
EB-5 long term promissory notes | 1,521 | 1,037
Unsecured working capital loans and short-term notes | 1,086 | 2,391
Total debt | 85,200 | 91,758
Less current portion of debt | 12,134 | 17,966
Total long term debt | $ 73,066 | $ 73,792

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