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Internal-Use Software Development Costs - Capitalized Computer Software Future Amortization Expense (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Research and Development [Abstract]
2017	$ 2,409
2018	8,431
2019	5,153
2020	1,327
Internal use software development costs, net	$ 17,320	$ 15,539

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- Definition

Capitalized Computer Software, Amortization Expense, Remainder of Fiscal Year

+ References

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- Definition

Capitalized Computer Software, Amortization Expense, Year Four

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- Definition

Capitalized Computer Software, Amortization Expense, Year Three

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- Definition

Capitalized Computer Software, Amortization Expense, Year Two

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- Definition

The carrying amount of capitalized computer software costs net of accumulated amortization as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 985
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 985
-SubTopic 20
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128487-111756

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