Receivables, Net - Schedule of Receivables, Net (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Income tax receivables	$ 95,874	$ 10,671
Servicing rights holdback receivable (1)	73,365	9,173
Servicing fee receivables	35,698	42,773
Receivables related to Non-Residual Trusts	15,033	16,542
Insurance commission receivables (2)	0	12,845
Other receivables	49,725	48,790
Total receivables	269,695	140,794
Less: Allowance for uncollectible receivables	(1,733)	(3,604)
Receivables, net	$ 267,962	137,190
Restatement Adjustment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Error Correction, Decrease In Assets		42,100
Restatement Adjustment [Member] | Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Error Correction, Decrease In Assets		$ 77,200