CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities
Net Income	$ 23,655	$ 3,284
Adjustments for:
Depreciation	4,320	2,739
Change in allowance for doubtful accounts	5,578	3,859
Share-based compensation	2,347	1,914
Unrealized loss on warrant conversion liability	0	437
(Gain) loss on equity investment	(15)	51
(Gain) loss on disposal of property and equipment	(2,627)	141
Deferred income taxes (benefit)	(7,825)	0
Net change in working capital
Increase in accounts receivable	(5,073)	(7,818)
Increase in inventory	(5,220)	(825)
Increase in prepaid expenses and other current assets	(329)	(109)
Increase in trade payables	2,044	1,934
(Decrease) increase in deferred revenue	(36)	690
Increase (decrease) in accrued liabilities	3,765	(181)
Increase (decrease) in income tax payable	1,404	(153)
Net cash provided by operating activities	21,988	5,963
Cash flows from investing activities
Purchase of property and equipment	(5,729)	(7,700)
Investment in equity method investment	(31)	0
Proceeds from sale of property and equipment	5,140	213
Net cash used in investing activities	(620)	(7,487)
Cash flows from financing activities
Proceeds from exercise of options	1,772	22
Proceeds from exercise of warrants	0	16
(Principal payments) proceeds on notes payable	(67)
(Principal payments) proceeds on notes payable		4,837
Principal payments on term note	(795)	0
Shares repurchased and canceled under the Normal Course Issuer Bid	0	(1,522)
Repayments of lease liabilities, net of proceeds	(5,926)	(4,551)
Net cash used in financing activities	(5,016)	(1,198)
Net increase (decrease) in cash and cash equivalents	16,352	(2,722)
Cash and cash equivalents at beginning of year	13,355	10,413
Cash and cash equivalents at end of period	29,707	7,691
Supplemental disclosures of cash flow information
Cash paid during the period for interest	309	52
Cash paid during the period for income taxes, net of refunds received	(38)	317
Supplemental disclosures of non-cash transactions
Property and equipment financed through finance leases	2,883	9,438
Property and equipment financed through leases under FASB ASC 842	$ 57	$ 1,919