Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Cash flows from operating activities:
Net loss	$ (135,218,000)	$ (41,270,000)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	8,570,000	8,429,000
Impairment of long-lived assets	3,073,000	827,000
Impairment of goodwill	12,594,000	0
Loss on extinguishment of debt	594,000	0
Amortization of deferred financing costs	272,000	173,000
Stock-based compensation	15,843,000	15,802,000
Provision for inventory write-down	24,752,000	4,946,000
Provision for credit losses, net of recoveries	4,443,000	(229,000)
Provision for sales returns	8,184,000	2,556,000
Provision for warranty expense	56,000	656,000
Unrealized loss on foreign currency transactions	3,765,000	448,000
Subsidiary dissolution		(68,000)
Loss (gain) of disposal of property, plant and equipment	54,000	(135,000)
Deferred taxes	(0)
Changes in operating assets and liabilities excluding effects of acquisition:
Accounts receivable	53,297,000	(49,266,000)
Other receivable	(314,000)	(9,520,000)
Inventories	(18,065,000)	(43,994,000)
Contract assets	(249,000)	1,488,000
Prepaid expenses and other assets	3,473,000	(5,402,000)
Accounts payable	(24,645,000)	59,139,000
Contract liabilities	(7,578,000)	5,241,000
Accrued and other liabilities	1,224,000	(408,000)
Net cash used in operating activities	(45,875,000)	(50,587,000)
Cash flows from investing activities:
Proceeds from disposal of property, plant and equipment and other assets	1,829,000	165,000
Purchases of property, plant and equipment	(1,574,000)	(4,532,000)
Acquisition of business, net of cash acquired		(23,647,000)
Net cash used in investing activities	255,000	(28,014,000)
Cash flows from financing activities:
Proceeds from issuance of common stock in public offerings, net of issuance costs		30,774,000
Proceeds from long-term borrowings	15,000,000	25,000,000
Repayments of long-term borrowings	(24,073,000)	(625,000)
Proceeds from short-term borrowings and line of credit, net	19,636,000	4,000,000
Repayments of short-term borrowings and line of credit, net	(4,393,000)
Proceeds from related party term loan	36,930,000	5,041,000
Repayments of related party term loan	(12,693,000)
Payments for debt financing costs	(664,000)	(839,000)
Payment of contingent consideration	(347,000)	(558,000)
Proceeds from exercise of stock awards and employee stock plan purchases	(102,000)	1,975,000
Net cash provided by financing activities	29,294,000	64,768,000
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(1,230,000)	(1,342,000)
Net change in cash, cash equivalents and restricted cash	(17,556,000)	(15,175,000)
Cash, cash equivalents and restricted cash at beginning of period	38,464,000	53,639,000
Cash, cash equivalents and restricted cash at end of period	20,908,000	38,464,000
Reconciliation of cash, cash equivalents and restricted cash to consolidated balance sheets
Cash and cash equivalents	18,957,000	34,347,000
Restricted cash	1,804,000	3,969,000
Long-term restricted cash	147,000	148,000
Cash, cash equivalents and restricted cash at end of period	20,908,000	38,464,000
Cash paid during the period for:
Interest - bank and trade facilities	2,640,000	1,177,000
Interest - related party	232,000	65,000
Income taxes	$ 853,000	$ 1,017,000