Derivative Financial Instruments - Schedule of Fair Value Information Related to Derivative Financial Instruments (Details) - Designated as Hedging Instruments - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Derivatives, Fair Value [Line Items]
Assets	$ 377	$ 339	$ 374
Liabilities	6,467	5,923	4,961
Cash Flow Hedges
Derivatives, Fair Value [Line Items]
Assets	377	339	330
Liabilities	576	2,167	4,961
Cash Flow Hedges \| Interest rate swap \| Other Current Assets
Derivatives, Fair Value [Line Items]
Assets	377	339	330
Cash Flow Hedges \| Interest rate collar \| Other Current Liabilities
Derivatives, Fair Value [Line Items]
Liabilities	177	666	1,315
Cash Flow Hedges \| Interest rate collar \| Other Long-Term Liabilities
Derivatives, Fair Value [Line Items]
Liabilities	399	1,501	3,646
Net Investment Hedges \| Foreign exchange contracts \| Other Current Assets
Derivatives, Fair Value [Line Items]
Assets			44
Net Investment Hedges \| Foreign exchange contracts \| Other Current Liabilities
Derivatives, Fair Value [Line Items]
Liabilities	$ 5,891	$ 3,756	$ 0

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 45
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13495-108611

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=82849420&loc=SL20226008-175313

Name:	us-gaap_DerivativeAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant