CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
OPERATING ACTIVITIES:
Net (loss) income	$ (26,756)	$ (39,964)	$ 629
Adjustments to reconcile net (loss) income to net cash used by operating activities:
Depreciation and amortization	13,983	13,396	14,239
Stock-based compensation	13,317	11,456	8,314
Provision for bad debts (net of recoveries)	163	176	440
Loss on disposal of assets	156	218	383
Provision for excess and obsolete inventory	(68)	2,297	1,349
Impairment of leasehold improvements	507	0	0
Impairment of intangibles	1,135	0	0
Deferred income tax expense (benefit)	2,412	24,706	(28,444)
(Increase) decrease in:
Accounts receivable, net	(11,198)	(15,577)	12,346
Inventories	3,379	(6,706)	10,343
Prepaid expenses and other assets	(21,239)	5,996	3,862
(Decrease) increase in:
Accounts payable and accrued liabilities	4,777	(13,260)	2,390
Income taxes payable	(1,904)	847	(3,357)
Customer deposits	1,343	2,627	(374)
Unearned service revenues	(4,863)	312	(726)
Net cash (used in) provided by operating activities	(24,856)	(13,476)	21,394
INVESTING ACTIVITIES:
Proceeds from sale of investments	0	0	25,000
Purchases of property and equipment	(6,371)	(7,035)	(4,774)
Cash paid for technology development, patents and licenses	(10,567)	(4,905)	(1,298)
Acquisitions of businesses and minority share investments, net of cash received	(32,959)	(33,800)	(6,036)
Other	0	0	1,015
Net cash (used in) provided by investing activities	(49,897)	(45,740)	13,907
FINANCING ACTIVITIES:
Payments on capital leases	(220)	(296)	(338)
Payments of contingent consideration for acquisitions	0	0	(733)
Payments for taxes related to net share settlement of equity awards	(1,892)	(4,002)	(2,602)
Proceeds from issuance of stock related to stock option exercises	0	5,880	14,731
Short term debt	1,115	0	0
Net cash (used in) provided by financing activities	(997)	1,582	11,058
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	(8,427)	(6,010)	5,640
(DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(84,177)	(63,644)	51,999
CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR	121,989	185,633	133,634
CASH AND CASH EQUIVALENTS, END OF YEAR	$ 37,812	$ 121,989	$ 185,633