CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities
Net loss	$ (39,111)	$ (35,266)
Adjustments to reconcile net loss to net cash used in operating activities:
Provision for doubtful accounts	(1,487)	423
Depreciation and amortization	4,572	4,461
Payment-in-kind interest	1,598	2,277
Amortization of debt discount	1,230	1,388
Amortization of debt issuance costs	829	702
Share-based compensation expense	765	966
Gain on disposal of property and equipment	(67)	(115)
Loss on debt extinguishment	7,351	0
Change in fair value of convertible senior notes	12,844	52
Change in fair value of preferred stock derivative liability	8,914	(2,083)
Changes in operating assets and liabilities:
Accounts receivable	(4,157)	48,516
Inventory	(21,938)	(3,422)
Prepaid expenses and other assets	(14,322)	2,142
Accounts payable	26,864	(9,239)
Accrued expenses	(1,731)	(14,323)
Reserve for sales returns and allowances	174	(6,053)
Income taxes payable	(513)	(2,064)
Other liabilities	(346)	(264)
Total adjustments	20,580	23,364
Net cash used in operating activities	(18,531)	(11,902)
Cash flows from investing activities
Purchases of property and equipment	(3,725)	(4,335)
Proceeds from sale of property and equipment	32	65
Net cash used in investing activities	(3,693)	(4,270)
Cash flows from financing activities
Retirement of convertible senior notes	0	(1,905)
Proceeds from loan under the Paycheck Protection Program	0	6,206
Repurchase of common stock for employee tax withholding	(164)	(174)
Net proceeds from issuance of long term debt	96,306	0
Debt issuance costs	(2,787)	0
Repayment of term loan	(125,805)	0
Net cash provided by (used in) financing activities	(32,450)	4,127
Net decrease in cash, cash equivalents and restricted cash	(54,674)	(12,045)
Effect of foreign currency translation	322	(1,553)
Cash, cash equivalents and restricted cash, beginning of period	92,693	66,286
Cash, cash equivalents and restricted cash, end of period	38,341	52,688
Cash paid during the period for:
Income taxes	644	2,791
Interest	$ 8,664	$ 6,720