Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities
Net income (loss)	$ 2,517	$ (28,462)	$ 13,811
Adjustments to reconcile net income to net cash from operating activities
Depreciation and amortization	30,546	24,699	18,659
Amortization of operating lease assets, debt costs, and other assets	3,730	3,778	1,024
Provision for expected credit losses	199	1,891	(599)
Deferred income taxes	10,787	1,393	(2,661)
Share-based compensation	16,207	21,540	18,930
Interest and loss on the valuation of investment securities	116	5,000	3,050
Change in fair value of contingent consideration	(7,300)	29,140	3,069
Other	(2,228)	2,433	1,633
Changes in operating assets and liabilities, net of effects of acquisitions
Accounts receivable	13,283	(11,037)	(3,706)
Inventories	(873)	(5,712)	9,698
Prepaid expenses and other current assets	4,526	(3,698)	(1,127)
Accounts payable	2,532	2,138	(170)
Other current liabilities	5,975	(7,716)	(7,563)
Contract liability (Note 15)	13,851
Payment of contingent consideration		(1,340)
Other long-term assets and liabilities	(19,596)	(2,014)	(4,130)
Net cash from operating activities	74,272	32,033	49,918
Cash flows from investing activities
Acquisition of a business	(18,000)		(44,294)
Capital expenditures for property, plant and equipment	(15,485)	(18,997)	(13,592)
Capital expenditures for intangible assets	(1,609)	(1,527)	(1,664)
Purchase of investment securities	(10,000)
Asset acquisitions and other investments	(7,240)	(2,400)	(1,448)
Net cash from investing activities	(52,334)	(22,924)	(60,998)
Cash flows from financing activities
Proceeds from revolving credit facility	100,000
Repayment of revolving credit facility	(100,000)
Proceeds from issuance of common shares	7,598	11,551	7,100
Payments related to withholdings for share-based compensation	(2,493)	(5,193)	(3,425)
Payment of contingent consideration		(13,660)
Payments related to finance lease obligation	(323)	(365)
Payment of debt issuance costs and other financing activities	(1,537)	(3,021)	(682)
Net cash from financing activities	3,245	(10,688)	2,993
Effect of exchange rate changes on cash and restricted cash	1,235	(207)	(881)
Net change in cash, cash equivalents, and restricted cash	26,418	(1,786)	(8,968)
Cash, cash equivalents, and restricted cash at the beginning of the year	70,403	72,189	81,157
Cash, cash equivalents, and restricted cash at the end of the year	96,821	70,403	72,189
Components of cash, cash equivalents, and restricted cash at the end of the year
Cash and cash equivalents	96,291	69,719	69,623
Restricted cash	530	684	2,566
Cash, cash equivalents, and restricted cash at the end of the year	$ 96,821	$ 70,403	$ 72,189