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Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Cash flows from operating activities:    
Net loss $ (4,952) $ (8,164)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation expense 6,892 6,573
Gain on disposal of fixed assets (17) (162)
Bad debt expense 147 0
Gain on extinguishment of debt (116) 0
Income from equity investment in joint venture (187) 0
Interest expense restructured to debt 0 3,258
Change in operating assets and liabilities, net of acquisitions:    
Accounts receivable 1,823 (55)
Due to/(from) related parties 113 (2,148)
Inventories 67 (28)
Prepaid expenses and other current assets (1,184) (590)
Prepaid expenses and other current assets 1,117 (199)
Other 18 45
Net cash provided by (used in) operating activities 3,721 (1,470)
Cash flows from investing activities:    
Acquisition of fixed assets (2,103) (819)
Proceeds on sales of fixed assets 125 800
Net cash used in investing activities (3,243) (19)
Cash flows from financing activities:    
Proceeds on long-term borrowings from related parties 5,000 4,603
Payments on long-term borrowings from related parties (2,582) (1,233)
Payments on long-term borrowings 0 (2,420)
Proceeds from short-term notes payable 767 408
Payments on short-term notes payable (394) (452)
Net cash provided by financing activities 2,791 906
Net increase (decrease) in cash and cash equivalents 3,269 (583)
Cash and cash equivalents, beginning of period 1,247 1,488
Cash and cash equivalents, end of period 4,516 905
Supplemental disclosure of cash flow information:    
Interest paid 1,108 1,121
Income taxes paid 0 0
Non-cash investing and financing activities:    
Extinguishment of long-term debt 7,000 0
Equipment acquired under capital leases   1,335
American Electric    
Cash flows from investing activities:    
Acquisition, net of cash received (1,876) 0
Diversenergy, LLC    
Cash flows from investing activities:    
Acquisition, net of cash received $ 611 $ 0