CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities:
Net loss	$ (23,597)	$ (9,740)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation, amortization and accretion	10,152	4,993
Current expected credit losses	912	693
Provision for obsolete inventory	2,158	1,240
Stock-based compensation	3,217	1,838
Loss on debt extinguishment	8,123	0
Adjustment to contingent consideration liability	(2,310)	0
Deferred income tax	(4,372)	(4,065)
Changes in operating assets and liabilities:
Accounts receivable	756	(3,318)
Inventories	(9,945)	1,466
Other current assets	989	(1,934)
Other assets	597	158
Accounts payable	(655)	(3,715)
Accrued salaries and benefits	2,794	1,479
Accrued expenses	(627)	2,936
Customer deposits and deferred service revenue	(3,287)	1,107
Other long-term liabilities	706	(2,758)
Net cash used in operating activities	(14,389)	(9,620)
Cash flows from investing activities:
Acquisitions, net of cash acquired	0	(7,000)
Settlement of working capital for acquisitions	191	0
Capital expenditures	(692)	(2,352)
Capitalization of software costs	(6,369)	(2,283)
Net cash used in investing activities	(6,870)	(11,635)
Cash flows from financing activities:
Payments of long-term debt	(471)	0
Payment of contingent consideration	0	(2,550)
Payments of bank borrowings	0	(17,459)
Proceeds from bank borrowings	0	9,640
Payments for the extinguishment of notes payable	(66,250)	0
Proceeds from notes payable, net of issuance costs	115,786	75,039
Treasury stock acquired from employees upon vesting or forfeiture of restricted stock	(829)	0
Proceeds from exercise of stock options	436	283
Net cash provided by financing activities	48,672	64,953
Effect of exchange rate changes on cash and cash equivalents	306	(236)
Net increase in cash and cash equivalents	27,719	43,462
Cash and cash equivalents at beginning of period	28,036	3,485
Cash and equivalents at end of period	55,755	46,947
Supplemental disclosures of cash flow information:
Cash paid for interest	1,339	153
Income taxes, net of refunds	184	125
Capital expenditures recorded in accounts payable	295	0
Capitalized software recorded in accounts payable	$ 347	$ 0