Business Combinations - Schedule of Purchase Price Allocation to the Fair Values of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands					1 Months Ended	12 Months Ended
	Jul. 13, 2018	Jul. 06, 2018	Mar. 16, 2018	Mar. 09, 2018	Apr. 30, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Goodwill						$ 49,704	$ 67,274	$ 52,750
Total purchase price, net of cash acquired						$ 0	$ 27,067	$ 5,596
Nutfield
Business Acquisition [Line Items]
Accounts receivable					$ 160
Inventory					539
Other assets					96
Deferred income tax assets					131
Intangible assets					2,329
Goodwill					2,357
Accounts payable and accrued liabilities					(12)
Other liabilities					(104)
Deferred income tax liabilities					0
Total purchase price, net of cash acquired					$ 5,496
Laser Controls Systems
Business Acquisition [Line Items]
Accounts receivable				$ 0
Inventory				0
Other assets				0
Deferred income tax assets				0
Intangible assets				1,400
Goodwill				928
Accounts payable and accrued liabilities				0
Other liabilities				(579)
Deferred income tax liabilities				0
Total purchase price, net of cash acquired				$ 1,749
Photocore AG
Business Acquisition [Line Items]
Accounts receivable			$ 0
Inventory			0
Other assets			0
Deferred income tax assets			0
Intangible assets			1,435
Goodwill			1,010
Accounts payable and accrued liabilities			0
Other liabilities			0
Deferred income tax liabilities			0
Total purchase price, net of cash acquired			$ 2,445
Lanmark
Business Acquisition [Line Items]
Accounts receivable		$ 610
Inventory		299
Other assets		76
Deferred income tax assets		0
Intangible assets		1,366
Goodwill		5,355
Accounts payable and accrued liabilities		(159)
Other liabilities		(971)
Deferred income tax liabilities		(325)
Total purchase price, net of cash acquired		$ 6,251
Open Technologies
Business Acquisition [Line Items]
Accounts receivable	$ 2,735
Inventory	1,852
Other assets	634
Deferred income tax assets	0
Intangible assets	7,821
Goodwill	13,573
Accounts payable and accrued liabilities	(2,926)
Other liabilities	(5,201)
Deferred income tax liabilities	(1,876)
Total purchase price, net of cash acquired	$ 16,612