Property and Equipment - Components of Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 114,073	$ 86,493
Less accumulated depreciation and amortization	(51,342)	(29,953)
Property and equipment, net	62,731	56,540
Hosting equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	35,018	26,920
Capitalized internal-use software
Property Plant And Equipment [Line Items]
Property and equipment, gross	25,773	22,418
Leasehold improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	25,396	19,577
Computer equipment and software
Property Plant And Equipment [Line Items]
Property and equipment, gross	11,879	7,682
Furniture and fixtures
Property Plant And Equipment [Line Items]
Property and equipment, gross	8,014	5,739
Construction in progress
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 7,993	$ 4,157

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(13))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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