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Acquisitions - Supplemental Pro-forma Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($)
Business Combinations [Abstract]
Revenue	$ 219,665
Income before income taxes	$ 74,999

X

- Definition

Business Acquisition, Pro Forma Income Before Income Taxes

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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X

- Definition

The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(2)-(3)
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463

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- References

No definition available.

+ Details

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