Receivables, Net - Schedule of Receivables, Net (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Receivables [Abstract]
Servicing fee receivables	$ 25,158	$ 24,838
Income tax receivables	17,639	17,477
Servicing rights holdback receivable	14,050	31,336
Receivables related to Non-Residual Trusts	1,945	5,608
Other receivables	59,611	49,829
Total receivables	118,403	129,088
Less: Allowance for uncollectible receivables	(1,587)	(4,744)
Receivables, net	$ 116,816	$ 124,344

Fair value portion of amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties.

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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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For an unclassified balance sheet, the amount of fees and other revenue, excluding investment income receivable, earned but not yet received, which were recognized in conformity with revenue recognition criteria based on estimates or specific contractual terms.

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The valuation allowance as of the balance sheet date to reduce the gross amount of receivables to estimated net realizable value, which would be presented in parentheses on the face of the balance sheet.

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Amount billed to customers under long-term contracts or programs that have been withheld because of retainage provisions in a contract.

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Carrying amount as of the balance sheet date of income taxes previously overpaid to tax authorities (such as U.S. Federal, state and local tax authorities) representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes. Also called income tax refund receivable.

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Amount due from parties in nontrade transactions, classified as other.

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