CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities
Net Income	$ 26,459	$ 6,137
Adjustments for:
Depreciation	6,745	4,398
Change in allowance for doubtful accounts	7,031	6,937
Share-based compensation	3,581	2,978
Unrealized gain on warrant conversion liability	0	(363)
(Gain) loss on equity method investment	(36)	77
(Gain) loss on disposal of property and equipment	(2,424)	308
Deferred income taxes (benefit)	(7,593)	0
Net change in working capital
Increase in accounts receivable	(6,986)	(9,827)
(Increase) decrease in inventory	(1,402)	1,621
Increase in prepaid expenses and other current assets	(1,771)	(1,321)
Increase (decrease) in trade payables	2,739	(1,813)
Increase in deferred revenue	297	770
Increase in accrued liabilities	2,397	1,909
Increase (decrease) in income tax payable	282	(124)
Net cash provided by operating activities	29,319	11,687
Cash flows from investing activities
Purchase of property and equipment	(8,204)	(10,582)
Investment in equity method investment	(30)	0
Proceeds from sale of property and equipment	5,187	350
Net cash used in investing activities	(3,047)	(10,232)
Cash flows from financing activities
Proceeds from exercise of options	1,780	136
Proceeds from exercise of warrants	0	261
(Principal payments) net proceeds on notes payable	(104)
(Principal payments) net proceeds on notes payable		4,837
(Principal payments) net proceeds on term note		4,966
(Principal payments) net proceeds on term note	(1,199)
Shares repurchased and canceled under the Normal Course Issuer Bid	0	(1,522)
Repayments of lease liabilities	(7,708)	(7,916)
Net cash (used in) provided by financing activities	(7,231)	762
Net increase in cash and cash equivalents	19,041	2,217
Cash and cash equivalents at beginning of year	13,355	10,413
Cash and cash equivalents at end of period	32,396	12,630
Supplemental disclosures of cash flow information
Cash paid during the period for interest	437	91
Cash paid during the period for income taxes, net of refunds received	1,975	338
Supplemental disclosures of non-cash transactions
Property and equipment financed through finance leases	3,002	14,735
Property and equipment financed through leases under FASB ASC 842	$ 57	$ 2,052