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Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2021
Mar. 31, 2021
Sep. 30, 2020
Mar. 31, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Cash flows from operating activities:              
Net loss $ (4,625) $ 175 $ (2,133) $ (1,050) $ (5,454) $ (6,646)  
Adjustments to reconcile net loss to net cash provided by operating activities:              
Depreciation 2,324   2,266   6,767 6,802  
Stock-based compensation expense         2,731 344  
Bad debt expense         0 144  
Gain on disposal of fixed assets         (24) (11)  
Gain on extinguishment of debt         (1,086) 0  
Income from equity investment in joint venture (308)   (642)   (1,267) (1,529)  
Distributions from equity investment in joint venture         1,387 2,054  
Impairment of right-of-use lease asset 376   0   376 0  
Change in operating assets and liabilities, net of acquisitions:              
Accounts receivable         (1,708) 3,629  
Due to (from) related parties         42 0  
Inventories         (173) 48  
Prepaid expenses and other current assets         91 (396)  
Accounts payable and accrued liabilities         3,878 (2,085)  
Other         (82) 113  
Net cash provided by operating activities         5,478 2,467  
Cash flows from investing activities:              
Acquisition of fixed assets         (6,948) (327)  
Proceeds on sales of fixed assets         258 12  
Net cash used in investing activities         (6,690) (315)  
Cash flows from financing activities:              
Proceeds from borrowings on short- and long-term notes payable         7,228 1,856  
Payments on short- and long-term notes payable         (650) (644)  
Payments on notes payable and financed leases from related parties         (3,277) (3,776)  
Payment of debt issuance costs         (420) 0  
Employee tax payments from restricted stock withholdings         (430) 0  
Net cash provided by (used in) financing activities         2,451 (2,564)  
Effect of exchange rate changes on cash         (115) (157)  
Net increase (decrease) in cash and cash equivalents         1,124 (569)  
Cash and cash equivalents, beginning of period   $ 1,814   $ 3,979 1,814 3,979 $ 3,979
Cash and cash equivalents, end of period $ 2,938   $ 3,410   2,938 3,410 $ 1,814
Supplemental disclosure of cash flow information:              
Interest paid         645 834  
Income taxes paid         228 210  
Non-cash investing and financing activities:              
Common stock issued to acquire fixed assets         3,795 0  
Insurance premium financing         1,278 0  
Equipment acquired under capital leases         $ 104 $ 0