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.

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Business Acquisitions - Proforma Results of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Amortization of intangible assets			$ 7,051
Dealflo Limited
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Amortization of intangible assets				$ 2,200
Revenue	$ 1,600	$ 1,800	$ 5,600	2,300
Dealflo Limited \| Intercompany elimination
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Revenue				400
Acquisition related costs				$ 1,100