Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net income (loss)	$ (32,400)	$ (9,042)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	3,555	3,935
Impairment of long-lived assets and non-cash restructuring	4,475
Gain on Lease termination	(908)
Loss on extinguishment of debt		1,343
Amortization of deferred financing costs	12	147
Stock-based compensation	6,450	3,310
Provision for inventory write-down	2,928	4,079
Bad debt expense	14,579	446
Provision for sales returns	873	556
Provision for warranty	636	341
Unrealized gain on foreign currency transactions	47	(405)
Deferred taxes	139	(224)
Changes in operating assets and liabilities:
Accounts receivable	(3,945)	(16,582)
Other receivable	(7,648)	(1,153)
Inventories	(24,256)	(11,984)
Contract assets	2,557	11,609
Prepaid expenses and other assets	(7,063)	(805)
Accounts payable	21,991	2,217
Contract liabilities	631	(131)
Accrued and other liabilities	2,282	1,348
Net cash provided by (used in) operating activities	(15,065)	(10,995)
Cash flows from investing activities:
Purchases of property, plant and equipment	(4,158)	(1,947)
Acquisition of business, net of cash acquired	(4,459)
Net cash used in investing activities	(8,617)	(1,947)
Cash flows from financing activities:
Proceeds from issuance of common stock in public offerings, net of issuance costs	59,525
Proceeds from short-term borrowings and line of credit		13,774
Repayments of short-term borrowings and line of credit	(13,278)	(12,077)
Repayments of long-term borrowings		(13,125)
Proceeds from related party term loan		18,361
Repayments of related party term loan	(29,298)
Proceeds from factored accounts receivable		11,645
Deferred financing costs		(20)
Proceeds from exercise of stock awards and employee stock plan purchases	4,629	1,262
Net cash provided by financing activities	21,578	19,820
Effect of exchange rate changes on cash, cash equivalents and restricted cash	71	47
Net increase in cash, cash equivalents and restricted cash	(2,033)	6,925
Cash, cash equivalents and restricted cash at beginning of period	54,587	33,635
Cash, cash equivalents and restricted cash at end of period	52,554	40,560
Reconciliation of cash, cash equivalents and restricted cash to statement of financial position
Cash and cash equivalents	45,505	31,307
Restricted cash	6,884	9,087
Long-term restricted cash	165	166
Cash, cash equivalents and restricted cash at end of period	52,554	40,560
Cash paid during the period for:
Interest - bank and trade facilities	83	616
Interest - related party	108	888
Income taxes	$ 3,029	$ 2,587