Represents the finite-lived intangible assets reclassified during the period.

No definition available.

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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- Definition

Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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- Definition

Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

Amount of increase (decrease), classified as other, of an asset representing the future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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Goodwill- Goodwill and Intangible Assets, Net (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Carrying amount of goodwill by reportable segment
Amortization of Intangible Assets									$ (6,200)	$ (6,000)	$ (6,100)
Goodwill [Roll Forward]
Goodwill, Gross	$ 161,018				$ 161,221				161,018	161,221	148,560
Accumulated impairment losses	(30,768)				(24,081)				(30,768)	(24,081)	(24,081)
Goodwill	130,250				137,140				130,250	137,140	124,479
Goodwill acquired									913	10,066
Foreign exchange									(1,116)	2,784
Impairment of goodwill	6,686	$ 0	$ 0	$ 0	0	$ 0	$ 0	$ 0	6,686	0	0
Goodwill, Other Increase (Decrease)									(189)	(189)
North America
Goodwill [Roll Forward]
Goodwill, Gross	107,101				106,421				107,101	106,421	96,154
Accumulated impairment losses	(10,666)				(10,666)				(10,666)	(10,666)	(10,666)
Goodwill	96,435				95,755				96,435	95,755	85,488
Goodwill acquired									913	10,066
Foreign exchange									(233)	198
Impairment of goodwill									0
Goodwill, Other Increase (Decrease)									300	3
Europe
Goodwill [Roll Forward]
Goodwill, Gross	52,573				53,311				52,573	53,311	51,031
Accumulated impairment losses	(20,102)				(13,415)				(20,102)	(13,415)	(13,415)
Goodwill	32,471				39,896				32,471	39,896	37,616
Goodwill acquired									0	0
Foreign exchange									(738)	2,472
Impairment of goodwill									6,686
Goodwill, Other Increase (Decrease)									(192)	(192)
Asia/Pacific
Goodwill [Roll Forward]
Goodwill, Gross	1,344				1,489				1,344	1,489	1,375
Accumulated impairment losses	0				0				0	0	0
Goodwill	$ 1,344				$ 1,489				1,344	1,489	$ 1,375
Goodwill acquired									0	0
Foreign exchange									(145)	114
Impairment of goodwill									0
Goodwill, Other Increase (Decrease)										0
Patents
Carrying amount of goodwill by reportable segment
Amortization of Intangible Assets									(107)	(187)
Noncompete Agreements Trademarks and Other
Carrying amount of goodwill by reportable segment
Amortization of Intangible Assets									(1,757)	(2,495)
Reclassifications									24
Customer Relationships
Carrying amount of goodwill by reportable segment
Amortization of Intangible Assets									$ (1,430)	(1,574)
Reclassifications										$ 626