CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net loss	$ (69,319)	$ (75,799)	$ (36,562)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	26,095	21,421	10,097
Accretion of debt in interest expense	1,997	8,725	4,355
Current expected credit losses	1,204	1,290	540
Provision for obsolete inventory	69	103	2,256
Stock-based compensation	13,426	14,615	4,251
Impairment loss	1,301	0	0
Loss on debt extinguishment	0	11,916	8,123
Adjustment to contingent consideration liability	(4,400)	0	(3,340)
Deferred income tax	(373)	(10,417)	(3,229)
Changes in operating assets and liabilities:
Accounts receivable	(11,240)	1,832	(1,532)
Inventories	(2,777)	(13,547)	(4,476)
Other current assets	949	(3,995)	809
Other assets	(5,052)	(4,001)	326
Accounts payable	2,191	4,911	(4,176)
Accrued salaries and benefits	1,361	(270)	5,327
Accrued expenses	1,012	(6,096)	(594)
Customer deposits and deferred service revenue	(5,851)	(1,710)	(3,445)
Customers payable	7,205	0	0
Other long-term liabilities	(868)	(2,134)	1,027
Net cash used in operating activities	(43,070)	(53,156)	(20,243)
Cash flows from investing activities:
Cash paid for acquisition, net of cash acquired	(18,797)	(374,705)	0
Settlement of working capital for acquisition	0	0	191
Capital expenditures	(1,178)	(1,435)	(1,299)
Capitalization of software costs	(6,445)	(6,852)	(7,932)
Purchase of held to maturity investments	(40,290)	0	0
Net cash used in investing activities	(66,710)	(382,992)	(9,040)
Cash flows from financing activities:
Principal payments of long-term debt	(705)	(4,174)	(629)
Payments for the extinguishment of notes payable	0	(183,618)	(66,250)
Proceeds from common stock issuance	0	215,000	131,407
Payments for common stock issuance costs	0	(6,828)	0
Proceeds from debt issuance, net of original issue discount	0	441,385	115,786
Payments for debt issuance costs	0	(13,998)	0
Treasury stock acquired from employees upon vesting or forfeiture of restricted stock	(3,148)	(5,315)	(297)
Proceeds from exercise of stock options	1,286	1,156	675
Net cash (used in) provided by financing activities	(2,567)	443,608	180,692
Effect of exchange rate changes on cash and cash equivalents	1,461	273	1,241
Net (decrease) increase in cash, cash equivalents, and cash held on behalf of customers	(110,886)	7,733	152,650
Cash, cash equivalents, and cash held on behalf of customers at beginning of period	188,419	180,686	28,036
Cash, cash equivalents, and cash held on behalf of customers at end of period	77,533	188,419	180,686
Reconciliation of cash, cash equivalents, and cash held on behalf of customers
Cash and cash equivalents	70,328	188,419	180,686
Cash held on behalf of customers	7,205	0	0
Total cash, cash equivalents, and cash held on behalf of customers	77,533	188,419	180,686
Supplemental disclosures of cash flow information:
Interest	22	8,383	4,018
Income taxes	1,285	0	205
Bonus accrual to be paid in common shares	0	0	620
Capitalized software recorded in accounts payable	27	48	316
Capital expenditures in accounts payable	75	26	228
Tax withholding in accrued salaries and benefits related to treasury stock acquired from employees	0	643	0
Common stock issued for acquisition	$ 6,300	$ 110,219	$ 0