Accounts Receivable (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable, Gross	$ 20,848	$ 18,634
Allowance for Losses	(424)	(276)
Accounts receivable, net	20,424	18,358
Transaction related
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable, Gross	19,508	15,997
Allowance for Losses	(424)	(276)
Accounts receivable, net	19,084	15,721
Servicing related
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable, Gross	1,340	2,637
Allowance for Losses	0	0
Accounts receivable, net	$ 1,340	$ 2,637

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.

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For unclassified balance sheet, amounts due from customers or clients for goods or services that have been delivered or sold in the normal course of business.

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For an unclassified balance sheet, the amount due from customers or clients for goods or services that have been delivered or sold in the normal course of business, reduced to their estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

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