v3.26.1
Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Cash flows from operating activities:      
Net loss $ (23,202) $ (11,791) $ (19,193)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:      
Depreciation and amortization 9,108 8,979 8,722
Amortization of marketable securities premium 0 0 18
Stock-based compensation 3,292 3,097 3,540
Provision for credit losses 0 0 272
Loss on sale of equity investment 0 0 166
Loss on disposal of equipment 3 118 21
Return of equity method investments as dividends 868 2,396 4,316
Equity in income of unconsolidated joint ventures (765) (3,439) (2,050)
Deferred tax assets (88) 265 553
Changes in operating assets and liabilities:      
Accounts receivable (390) (6,896) 9,306
Inventories 6,347 (737) 1,073
Prepaid expenses and other current assets 1,389 (6,002) (652)
Other assets (3,056) 1,261 419
Accounts payable 147 3,038 (162)
Accrued liabilities 150 1,004 (1,897)
Other long-term liabilities (6,586) (3,405) (1,049)
Net cash provided by (used in) operating activities (12,783) (12,112) 3,403
Cash flows from investing activities:      
Purchases of property, plant and equipment (5,995) (5,771) (10,475)
Proceeds from sales and maturities of available-for-sale debt securities 0 2,160 9,582
Proceeds from sales of equity securities - 15% Jia Mei 0 0 827
Investments in non-marketable equity investments (837) (834) (2,538)
Net cash used in investing activities (6,832) (4,445) (2,604)
Cash flows from financing activities:      
Proceeds from issuance of common stock and options exercised, net of issuance costs 95,155 28 10
Proceeds from short-term bank loans 58,559 54,501 56,470
Payments on short-term bank loans (48,569) (60,092) (49,210)
Proceeds from capital increase in subsidiary shares from noncontrolling interests 0 0 708
Proceeds from long-term loan 3,463 5,831 635
Payments on long-term loan (1,513) (804) 0
Net cash provided by (used in) financing activities 107,095 (536) 8,613
Net increase (decrease) in cash, restricted cash and cash equivalents 94,555 (16,303) 8,766
Cash, restricted cash and cash equivalents at the beginning of the year 33,811 50,114 41,348
Cash, restricted cash and cash equivalents at the end of the period 128,366 33,811 50,114
Effect of exchange rate changes on cash, restricted cash and cash equivalents 7,075 790 (646)
Supplemental disclosures:      
Income taxes paid, net of refunds 586 962 686
Interest expense paid 1,792 2,069 1,564
Supplemental disclosure of non-cash flow information:      
Loan proceeds received by notes receivable 0 0 1,481
Notes receivables paid to purchase fixed assets 2,957 4,572 4,170
Non-cash consideration received from sale of DongFang 0 0 585
Investment in subsidiary shares from noncontrolling interest 0 0 308
Consideration payable in connection with construction in progress, included in accrued liabilities $ 1,128 $ 857 $ 6,574