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Business Segments - Schedule of Revenue by Geography (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Segment Reporting Information [Line Items]
Total revenue	$ 271,842	$ 250,231
United States
Segment Reporting Information [Line Items]
Total revenue	196,967	190,064
Canada
Segment Reporting Information [Line Items]
Total revenue	16,463	19,194
Europe & Africa
Segment Reporting Information [Line Items]
Total revenue	17,597	13,890
Middle East
Segment Reporting Information [Line Items]
Total revenue	19,285	10,570
Asia-Pacific
Segment Reporting Information [Line Items]
Total revenue	14,759	8,850
Latin America
Segment Reporting Information [Line Items]
Total revenue	$ 6,771	$ 7,663

X

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045

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+ References

No definition available.

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