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Unaudited Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Cash flows from operating activities    
Net loss $ (3,739) $ (2,628)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization expense 1,820 1,210
Amortization of deferred finance costs included in interest expense 91 20
Stock-based compensation 32 160
Provision for doubtful accounts 0 132
Deferred income tax benefit   (138)
Changes in operating assets and liabilities:    
Accounts receivable (1,036) (377)
Inventory (566) (1,569)
Prepaid expenses and other current and non-current assets 15 (222)
Accounts payable, accrued expenses, accrued payroll and other current liabilities 2,620 1,819
Lease-related assets and liabilities (128) (100)
Net cash used in operating activities (891) (1,693)
Cash flows from investing activities    
Purchase of property and equipment (35) (295)
Net cash used in investing activities (35) (295)
Cash flows from financing activities    
Payment of long-term debt (625)  
Net cash used in financing activities (625)  
Net decrease in cash, cash equivalents, and restricted cash (1,551) (1,988)
Cash, cash equivalents, and restricted cash at beginning of period 5,222 6,066
Cash, cash equivalents, and restricted cash at end of period 3,671 4,078
Reconciliation to amounts on condensed consolidated balance sheets:    
Cash and cash equivalents 3,063 2,969
Restricted cash 608 1,109
Total cash, cash equivalents, and restricted cash 3,671 4,078
Supplemental disclosure of non-cash activities:    
Liability for equity-based bonuses and other equity-based payments 2 (9)
Supplemental disclosure of cash flow information:    
Cash paid during the period for interest $ 623 236
Cash paid during the period for income taxes   $ 15