Receivables - Schedule of Receivables (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Receivables [Abstract]
Government-insured loan claims	$ 122,557	$ 105,258
Due from custodial accounts	27,175	9,060
Sales and transfers of MSRs	24,167	23,757
Advance funding, subservicing fees and reimbursable expenses	9,197	30,845
Reimbursable expenses	13,052	11,508
Other	4,970	7,754
Servicing	201,118	188,182
Income taxes receivable	37,888	45,987
Other receivables	20,086	17,672
Other receivables, gross	259,092	251,841
Allowance for losses	(57,872)	(53,579)
Receivables, total	$ 201,220	$ 198,262