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Revenue and Other Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Product Information [Line Items]
Revenue	$ 37,903	$ 28,162	$ 105,906	$ 77,576
Core solutions
Product Information [Line Items]
Revenue	14,670	11,302	41,682	31,637
Value plus services
Product Information [Line Items]
Revenue	21,752	15,684	60,053	42,338
Other
Product Information [Line Items]
Revenue	$ 1,481	$ 1,176	$ 4,171	$ 3,601
Minimum | Core solutions
Product Information [Line Items]
Subscriptions revenue recognition term			1 month
Maximum | Core solutions
Product Information [Line Items]
Subscriptions revenue recognition term			1 year

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Revenue Recognition, Subscription Agreement Term

+ References

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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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