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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Cash Flows from operating activities:      
Net Income (loss) $ (29,255) $ (24,094) $ (28,907)
Adjustments to reconcile net income to net cash provided by (used in) operating activities:      
Depreciation of property, plant & equipment 446 513 988
Amortization of intangible assets 156 481 604
Write-off loss / (gain) 1,333 (0) (0)
Impairment charge 7,000
Debt conversion expense 827 325
Interest and amortization of debt discount 168 1,057 458
Loss / (gain) on derivative liability (44)
Stock-based compensation 744 3,783 393
Bad debt expense 4 18 24
Inventory obsolescence impairment 554 (0) 457
Increase (decrease) in defined benefit pension liability, net of unrealized gains and losses 13 (570) 66
Income tax expense / (recovery) net of cash paid (3,268) (131) 9
Other non cash expenses /(income)      
Expenses settled in equity 85 146 14
Loss on disposal of a business 15,026
Unrealized gains related to available-for-sale debt securities recorded in the income statement after acquisition of arago (5,553)
Unrealized and non cash foreign currency transactions 1,378 172 800
Other 300 455
Changes in operating assets and liabilities, net of effects of businesses acquired      
Decrease (increase) in accounts receivables 227 207 870
Decrease (increase) in inventories (5,354) (236) 313
Decrease (increase) in other current assets, net (621) 737 46
Decrease (increase) in deferred research & development tax credits, net 154 464 1,176
Decrease (increase) in other noncurrent assets, net 8 1,805 53
Increase (decrease) in accounts payable 137 2,061 2,386
Increase (decrease) in deferred revenue, current (34) (723) 213
Increase (decrease) in income taxes payable 45 8 (8)
Increase (decrease) in other current liabilities 210 (2,370) (199)
Increase (decrease) in deferred revenue, noncurrent (77) 81 9
Increase (decrease) in other noncurrent liabilities (50) (272) 326
Net cash provided by (used in) operating activities (17,144) (21,791) (12,550)
Cash Flows from investing activities:      
Sale / (acquisition) of equity securities (476)
Sale / (acquisition) of property, plant and equipment (303) (36) (52)
Sale of a business, net of cash and cash equivalents divested (181)
Acquisition of a business, net of cash and cash equivalents acquired (2,013) (3,845)
Net cash provided by (used in) investing activities (484) (2,525) (3,897)
Cash Flows from financing activities:      
Proceeds from options exercises 16 4 68
Proceeds from issuance of Common Stock 226 2,194
Proceeds from convertible loan issuance 4,820 44,362 22,053
Proceeds from debt 2,000 646
Repayments of debt (2,246) (5,276) (2,344)
Payments of debt issue costs (303) (2,341)
Repurchase of treasury shares (102) (1,135)
Net cash provided by (used in) financing activities 4,185 36,975 21,482
Effect of exchange rate changes on cash and cash equivalents (102) (63) 82
Cash and cash equivalents and restricted cash      
Net increase (decrease) during the period (13,545) 12,596 5,117
Balance, beginning of period 34,359 21,763 16,646
Balance, end of period 20,814 34,359 21,763
Reconciliation to balance sheet      
Cash and cash equivalents 20,706 34,201 19,650
Restricted cash, current 108 110 2,113
Cash and cash equivalents from discontinued operations 48
Supplemental cash flow information      
Cash paid for interest, net of amounts capitalized 53 490 250
Cash paid for incomes taxes 6 46
Noncash conversion of convertible loans into common stock 13,800 43,704 12,946
Restricted cash received for share subscription in progress 1
ROU assets obtained from operating lease $ 29 $ 2,375 $ 544