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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Cash flows from operating activities    
Net loss $ (5,347) $ (6,569)
Adjustments to reconcile net loss to cash (used in) provided by operating activities:    
Non-controlling interest 3 (5)
Inventory reserve 177 122
Stock based compensation expense 3,156 3,380
Depreciation and amortization 6,152 6,377
Right-of-use assets, non-cash lease expense 2,071 1,839
Bad debt expense 102 824
Deferred income taxes 107 701
Other non-cash items 660 229
Changes in:    
Accounts receivable (3,025) (7,469)
Inventory (5,544) (3,689)
Prepaid expenses and other assets (761) (871)
Deferred costs 986 2,888
Deferred revenue (197) (1,365)
Accounts payable and accrued expenses 1,717 4,130
Lease liabilities (2,034) (1,757)
Accrued severance payable, net 63 (12)
Net cash provided by (used in) operating activities (1,714) (1,247)
Cash flows from investing activities:    
Capital expenditures (4,001) (2,534)
Net cash (used in) investing activities (4,001) (2,534)
Cash flows from financing activities:    
Net proceeds from stock offering 26,907
Payment of preferred stock dividends (3,084)
Repayment of long-term debt (4,279) (4,040)
Short-term bank debt, net 3,949 94
Proceeds from exercise of stock options, net 170
Purchase of treasury stock upon vesting of restricted stock (193) (383)
Net cash provided by (used in) financing activities (523) 19,664
Effect of foreign exchange rate changes on cash and cash equivalents (3,510) (189)
Net increase (decrease) in cash, cash equivalents and restricted cash (9,748) 15,694
Cash, cash equivalents, and restricted cash, beginning of period 26,760 18,435
Cash, cash equivalents, and restricted cash, end of period 17,012 34,129
Reconciliation of cash, cash equivalents, and restricted cash, beginning of period    
Cash and cash equivalents 26,452 [1] 18,127
Restricted cash 308 [1] 308
Reconciliation of cash, cash equivalents, and restricted cash, end of period    
Cash and cash equivalents 16,703 33,821
Restricted cash 309 308
Cash paid for:    
Taxes 52 50
Interest 945 1,129
Noncash investing and financing activities:    
Value of shares withheld pursuant to exercise of stock options $ 647
[1] Derived from audited balance sheet as of December 31, 2021.