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Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Cash flows from operating activities:    
Net loss $ (4,455) $ (5,104)
Adjustments to reconcile net loss to net cash provided by operating activities:    
Depreciation and amortization 4,375 5,430
Provision for expected credit losses (32) 41
Impairment of capitalized software 420 504
Provision for excess and obsolete inventory 108 217
Share-based compensation expense 717 1,800
Amortization of debt discount and debt issuance costs 489 489
Deferred income taxes (5) 101
Non-cash operating lease expense 405 592
Changes in assets and liabilities:    
Accounts receivable (828) (1,997)
Inventories 1,279 3,097
Prepaid expenses and other assets (785) (1,940)
Accounts payable (718) 5,544
Accrued expenses and other liabilities 3,999 (490)
Operating lease liabilities (423) (625)
Net cash provided by operating activities 4,546 7,659
Cash flows from investing activities:    
Purchases of property, plant and equipment 0 (61)
Additions to capitalized software development costs and purchases of intangible assets (577) (2,443)
Net cash used in investing activities (577) (2,504)
Cash flows from financing activities:    
Principal payments under finance lease obligations 0 (199)
Proceeds from a public offering, net of issuance costs 0 529
Principal payments on financed assets 0 (360)
Net borrowings (repayments) on revolving credit facility 583  
Repayments of Long-Term Lines of Credit   (3,385)
Proceeds from ESPP 0 75
Net cash provided by (used in) financing activities 583 (3,340)
Effect of exchange rates on cash 226 (272)
Net increase in cash and cash equivalents 4,778 1,543
Cash and cash equivalents, beginning of period 7,519 7,143
Cash, and cash equivalents, and restricted cash, end of period 12,297 8,686
Cash paid during the year for:    
Interest 147 117
Income taxes 44 59
Supplemental disclosures of non-cash investing and financing activities:    
Transfer of inventories to rental assets 696 543
Capital expenditures financed through accounts payable or accrued liabilities 104 2,164
Right-of-use assets obtained in exchange for operating leases liabilities $ 146 $ 50