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Deferred Implementation costs (Notes)	12 Months Ended
Deferred Implementation costs (Notes)	Dec. 31, 2018
Deferred Implementation Costs [Abstract]
Deferred Implementation Costs [Text Block]	Deferred Implementation Costs Deferred implementation costs, which related to certain customer contract fulfillment costs, were $3.9 million and $2.2 million as of December 31, 2018 and December 31, 2017, respectively. Amortization expense for the deferred implementation costs was $0.6 million and $0.3 million for the year ended December 31, 2018 and 2017, respectively. Deferred implementation costs are included in prepaid and other current assets and other assets, noncurrent in the Consolidated Balance Sheets. Amortization of deferred implementation costs is included in cost of subscription and cost of services revenues in the Consolidated Statements of Comprehensive Income (Loss). There was no impairment loss in relation to the costs capitalized for the periods presented.