Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities
Net income (loss)	$ (5,567)	$ 11,895
Adjustments to reconcile net income (loss) to net cash from operating activities
Depreciation and amortization	22,153	22,299
Amortization of operating lease assets, debt costs, and other assets	2,645	2,811
Provision for expected credit losses	376	945
Deferred income taxes	2,228	(2,471)
Share-based compensation expense	11,470	12,399
Interest and (gain) loss on valuation of investment securities	(305)	219
Change in fair value of contingent consideration	(2,375)	(7,600)
Other	743	(1,798)
Changes in operating assets and liabilities, net of effects of acquisitions
Accounts receivable	2,729	11,551
Inventories	(866)	246
Prepaid expenses and other current assets	(6,987)	2,453
Accounts payable	(2,983)	(3,106)
Other current liabilities	(3,951)	5,742
Contract liability (Note 10)	(5,951)	13,851
Payment of contingent consideration	(6,595)
Other long-term assets and liabilities	(68)	(17,455)
Net cash from operating activities	6,696	51,981
Cash flows from investing activities
Acquisition of a business		(18,000)
Capital expenditures for property, plant and equipment	(11,560)	(11,625)
Capital expenditures for intangible assets	(1,221)	(1,079)
Purchase of investment securities		(5,000)
Asset acquisitions and other investments	(1,250)	(7,240)
Net cash from investing activities	(14,031)	(42,944)
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	6,238	3,839
Payments related to withholdings for share-based compensation	(2,184)	(2,029)
Payments related to finance lease obligation	(395)	(204)
Payment of contingent consideration	(8,405)
Other financing activities	(927)	(1,023)
Net cash from financing activities	(5,673)	583
Effect of exchange rate changes on cash	(598)	277
Net change in cash, cash equivalents, and restricted cash	(13,606)	9,897
Cash, cash equivalents, and restricted cash at the beginning of period	96,821	70,403
Cash, cash equivalents, and restricted cash at the end of period	83,215	80,300
Components of cash, cash equivalents, and restricted cash at the end of period
Cash and cash equivalents	82,710	79,810
Restricted cash	505	490
Cash, cash equivalents, and restricted cash at the end of period	$ 83,215	80,300
Noncash investing activities - Purchase of intangible assets		$ 1,575