Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities:
Net loss	$ (9,076)	$ (26,504)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	2,442	2,443
Impairment of long-lived assets and non-cash restructuring		4,475
Amortization of deferred financing costs	72	12
Stock-based compensation	5,539	3,346
Provision for inventory write-down	1,072	1,907
Bad debt expense, net of recoveries	(896)	14,301
Provision for sales returns	2,080	430
Provision for warranty	183	469
Unrealized loss (gain) on foreign currency transactions	711	(495)
Subsidiary dissolution	(68)
Gain on disposal of property, plant and equipment	(68)
Deferred taxes		111
Changes in operating assets and liabilities:
Accounts receivable	(21,167)	944
Other receivable	(4,405)	(4,358)
Inventories	(16,199)	(13,966)
Contract assets	818	134
Prepaid expenses and other assets	(6,884)	(1,333)
Accounts payable	19,122	11,012
Contract liabilities	(206)	(87)
Accrued and other liabilities	(3,897)	(1,118)
Net cash used in operating activities	(30,827)	(8,277)
Cash flows from investing activities:
Proceeds from disposal of property, plant and equipment and other assets	65
Purchases of property, plant and equipment	(1,764)	(2,141)
Acquisition of business, net of cash acquired	(22,297)	(4,459)
Net cash used in investing activities	(23,996)	(6,600)
Cash flows from financing activities:
Proceeds from issuance of common stock in public offerings, net of issuance costs		59,525
Proceeds from long-term borrowings	25,000
Repayments of short-term borrowings and line of credit		(13,278)
Repayments of related party term loan		(29,298)
Payments for debt issue costs	(771)
Proceeds from exercise of stock awards and employee stock plan purchases	1,094	4,534
Net cash provided by (used in) financing activities	25,323	21,483
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(997)	(67)
Net increase in cash, cash equivalents and restricted cash	(30,497)	6,539
Cash, cash equivalents and restricted cash at beginning of period	53,639	54,587
Cash, cash equivalents and restricted cash at end of period	23,142	61,126
Reconciliation of cash, cash equivalents and restricted cash to statement of financial position
Cash and cash equivalents	17,125	53,927
Restricted cash	5,862	7,032
Long-term restricted cash	155	167
Cash, cash equivalents and restricted cash at end of period	23,142	61,126
Cash paid during the period for:
Interest - bank and trade facilities	36	83
Interest - related party		108
Income taxes	$ 749	$ 1,944