For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13531-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6404-108592

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13537-108611

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Description of Business and Basis of Presentation (Details) € in Millions, $ in Millions			6 Months Ended	12 Months Ended
	Feb. 19, 2016 EUR (€)	Feb. 19, 2016 USD ($)	Jun. 30, 2015 segment	Dec. 31, 2016 segment	Dec. 31, 2015	Dec. 31, 2014
Concentration Risk [Line Items]
Number of business segments			2	1
Sales Revenue, Net
Concentration Risk [Line Items]
Concentration risk percentage				100.00%	100.00%	100.00%
Foreign Subsidiaries \| Sales Revenue, Net
Concentration Risk [Line Items]
Concentration risk percentage				22.00%	24.00%	26.00%
Tecnonet \| Disposed of by Sale
Concentration Risk [Line Items]
Proceeds from Divestiture of Businesses	€ 4.3	$ 4.8