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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Cash flows from operating activities:      
Net income (loss) $ 36,262 $ 30,426 $ (16,991)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:      
Depreciation and amortization 10,838 9,091 10,708
Allowance for expected credit losses 1,718 7,288 882
Recovery of related party receivable (335)
Provision for obsolete and excess inventory 8,274 4,218 4,278
Stock-based compensation 6,285 1,622 744
Equity loss (income) from equity method investment 7,374 (3,197) (257)
Gain from sales of equity method investment (21,520)
Change in fair value of warrant liabilities (61)
Loss (Gain) on disposal of property and equipment 83 246 (29,726)
Gain from disposal of subsidiary (2,043)
Unrealized loss on marketable securities 101
Deferred income taxes (12,698) 372 (1,007)
Changes in operating assets and liabilities:      
Accounts receivable 788 (14,054) 33,864
Inventories (70,830) (76,240) 110,140
Prepaid expenses (2,152) (7,516) 1,846
Other current assets (747) (1,022) 1,919
Accounts payable (20,072) 76,337 (100,733)
Accrued liabilities and other liabilities (8,625) 35,126 8,038
Deferred revenue (7,443) 21,817 (11,226)
Dues from affiliate (3) (2) (1,036)
Net cash provided by (used in) operating activities (53,286) 84,512 (10,077)
Cash flows from investing activities:      
Loans to affiliate (15,000)
Insurance settlement proceeds 788 900
Acquisition of equity investments (7,000)
Payments to acquire property and equipment (13,839) (6,156) (10,283)
Proceeds on disposal of property and equipment 1 132 38,550
Sale of equity method investment 77,515
Net cash provided by (used in) investing activities (13,838) (5,236) 84,682
Cash flows from financing activities:      
Borrowings under line of credit 787 20,000 98,001
Repayments under line of credit (21,467) (134,440)
Borrowings of long-term debt
Repayments of long-term debt (285) (265) (13,254)
Loan from affiliate 15,000
Repayment of loan from affiliate (15,000)
Cash received from common control asset transaction 11,426
Proceeds from exercise of warrants 538
Proceeds from exercise of stock options 270
Net cash provided by (used in) financing activities 12,736 (1,732) (49,693)
Foreign currency effect on cash, cash equivalents and restricted cash 972 (345) (1,044)
Net increase (decrease) in cash, cash equivalents and restricted cash (53,416) 77,199 23,868
Cash, cash equivalents and restricted cash:      
Beginning of period 157,746 80,547 56,679
End of period 104,330 157,746 80,547
Supplemental disclosures of cash flow information:      
Cash paid for interest 268 270 2,634
Cash paid for income taxes 6,374 261 4,700
Supplemental schedule of noncash investing activities      
Cashless exercise of stock options 677
Acquisition of investment included in accrued liabilities $ 2,579