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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Operating activities:    
Net loss $ (31,770) $ (15,636)
Adjustments to reconcile net loss to net cash provided by (used in) operating activitites:    
Share-based compensation 1,101 747
Stock issued for services 118 0
Depreciation 4,622 4,670
Debt related amortization expense 5,399 5,723
Intangibles and other amortization expense 392 126
Change in fair value of warrant liability 0 (25)
Gain on extinguishment of debt 0 (2,033)
Loss on sale/disposal of assets 0 11
Changes in operating assets and liabilities:    
Accounts receivable (1,015) (403)
Inventories (2,370) 1,504
Prepaid expenses 371 (28)
Other current assets and other assets (425) 890
Accounts payable 2,580 (2,097)
Accrued interest expense and fees, net of payments 10,812 6,448
Other liabilities 1,497 474
Net cash provided by (used in) operating activities (8,688) 371
Investing activities:    
Capital expenditures (1,116) (629)
Net cash used in investing activities (1,116) (629)
Financing activities:    
Proceeds from borrowings 14,798 20,583
Repayments of borrowings (10,037) (18,956)
GAFI proceeds from borrowings 3,614 0
Net cash provided by financing activities 8,375 1,627
Effect of exchange rate changes on cash and cash equivalents 371 (166)
Net cash and cash equivalents increase (decrease) for period (1,058) 1,203
Cash and cash equivalents at beginning of period 1,486 283
Cash and cash equivalents at end of period 428 1,486
Supplemental disclosures of cash flow information, cash paid:    
Interest paid 3,092 4,894
Income taxes paid 6 6
Supplemental disclosures of cash flow information, non-cash transactions:    
Subordinated debt extension fees added to debt 680 680
Fair value of warrants issued to subordinated debt holders 321 579
Repurchase of common stock added to TEC promissory note 451 0
Senior debt extension and waiver fees added to debt 4,446 4,940
TEC promissory note fees and fees for Goodland transaction 1,169 0
Settlement of accounts payable through transfer of equipment 0 66
Settlement of subordinated debt through issuing stock 132 0
GAFI plant, property & equipment acquired with debt 15,431 0
Payment of TEC bridge loan added to GAFI Revolving loan 3,669 0
Debt exchanged for prepaid interest on GAFI Term loan $ 2,250 $ 0