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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Name:	us-gaap_GoodwillImpairmentLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Goodwill - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
Goodwill - Narrative (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Goodwill [Line Items]
Foreign exchange impact		$ (2,754)	$ (1,469)
Goodwill Impairment	$ 27,900		46,319	$ 0	$ 0
EMEA [Member]
Goodwill [Line Items]
Goodwill Impairment	20,800		75,400
LATAM SEF [Member]
Goodwill [Line Items]
Goodwill Impairment	$ 7,100
North America
Goodwill [Line Items]
Goodwill Impairment			$ 18,400