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	$ (36,345)	$ (74,824)
Income (loss) from discontinued operations, net of income taxes	(114)	326
Loss from continuing operations, net of income taxes	(36,231)	(75,150)
Adjustments to reconcile net loss to net cash used in operating activities
Depreciation and amortization	3,402	2,110
Provision for doubtful accounts	505	618
Provision for warranties	525	444
Provision for inventory	404	427
Fair value adjustments to derivative liability	0	50,010
Fair value adjustments of other liabilities held at fair value	(88)	49
Amortization of debt discount and issuance costs	1,927	1,722
Stock-based compensation expense	4,258	5,747
Payments of contingent consideration liability in excess of acquisition-date fair value	0	(2,416)
Other non-cash adjustments	70	459
Changes in operating assets and liabilities:
Accounts receivable	(3,698)	(2,167)
Inventories	(291)	(6,565)
Prepaid expenses, other current assets and other assets	916	126
Accounts payable, accrued, and other liabilities	(4,691)	(1,465)
Customer deposits	3,052	9,832
Sales return liability	(905)	1,380
Net cash flow from operating activities - continuing operations	(30,845)	(14,839)
Net cash flow from operating activities - discontinued operations	(114)	(263)
Net cash used in operating activities	(30,959)	(15,102)
Cash flows from investing activities:
Purchase of property and equipment	(813)	(3,170)
Net cash flow from investing activities - continuing operations	(813)	(3,170)
Net cash flow from investing activities - discontinued operations	0	11,314
Net cash provided by (used in) investing activities	(813)	8,144
Cash flows from financing activities:
Proceeds from issuance of common stock for employee stock-based plans	329	1,474
Net proceeds from issuance of common stock	0	39,226
Tax payments related to shares withheld for vested restricted stock units (RSUs)	(430)	(1,942)
Gross borrowings under the Term Loan	5,000	1,000
Gross borrowings under the Revolving Loan	5,440	0
Repayment of the Revolving Loan	(5,277)	0
Payments of contingent consideration up to acquisition-date fair value	0	(4,550)
Payments for debt financing fees	(73)	(800)
Net cash provided by financing activities	4,989	34,408
Net increase (decrease) in cash, cash equivalents and restricted cash	(26,783)	27,450
Cash, cash equivalents and restricted cash at:
Beginning of period	52,068	55,300
End of period	25,285	82,750
Reconciliation of cash, cash equivalents, and restricted cash to the condensed consolidated balance sheets
Cash and cash equivalents	24,990	82,417
Restricted cash included in other assets	$ 295	$ 333
Restricted Cash, Noncurrent, Statement of Financial Position [Extensible Enumeration]	us-gaap:OtherAssets	us-gaap:OtherAssets
End of period	$ 25,285	$ 82,750
Supplemental disclosure of cash flow information:
Interest paid	2,190	2,082
Supplemental disclosure of non-cash investing and financing activities:
Property and equipment in accounts payable and accrued liabilities	95	265
Deferred financing costs in accounts payable and accrued liabilities	$ 250	$ 0