Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of liability recognized arising from contingent consideration in a business combination.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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Acquisitions and Dispositions (Details) - USD ($) $ in Thousands	1 Months Ended			12 Months Ended
	Oct. 31, 2017	Sep. 30, 2017	Jan. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Acquisitions
Gain on bargain purchase of a business				$ 0	$ 0	$ (6,336)
Goodwill				$ 131,879	130,250	137,140
Weighted-average amortization period				5 years 7 months 6 days
Goodwill acquired				$ 1,815	913
Proceeds from Sales of Business, Affiliate and Productive Assets		$ 10,200
Loss on disposal of a business	$ (200)			0	0	(211)
North America
Acquisitions
Goodwill				96,244	96,435	95,755
Goodwill acquired				0	913
Europe
Acquisitions
Goodwill				34,300	32,471	$ 39,896
Goodwill acquired				$ 1,815	$ 0
CG Visions, Inc. [Member] \| North America
Acquisitions
Cash paid for acquisition			$ 20,800
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other			500
Goodwill			10,100
Intangible assets			$ 10,300
Weighted-average amortization period			7 years
Noncurrent Assets			$ 20,400
Business Combination, Contingent Consideration, Liability			1,100
Gbo Fastening Systems AB [Member] \| Europe Segment [Domain]
Acquisitions
Cash paid for acquisition			10,200
Gain on bargain purchase of a business			$ (6,300)