The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 350
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Business Acquisitions - Proforma Results of Operations (Details) - USD ($) $ in Thousands		3 Months Ended	9 Months Ended
	May 30, 2018	Sep. 30, 2018	Sep. 30, 2018	Sep. 30, 2017
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Amortization of intangible assets			$ 6,909
Dealflo Limited
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Amortization of intangible assets			2,200	$ 2,200
Revenue		$ 1,800	2,300
Acquisition related costs	$ 1,100
Dealflo Limited \| Non-recurring acquisition-related costs
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Acquisition related costs			1,100	1,100
Dealflo Limited \| Fair value adjustment of acquired deferred revenue
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Revenue				600
Dealflo Limited \| Intercompany elimination
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Revenue			$ 400	$ 400