Business and Basis of Presentation - Additional Information (Detail) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2016 USD ($) Segment $ / shares	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Number of Reportable Segments | Segment	3
Decrease In Income tax Benefit	$ 1.4
Decrease in Effective Tax Rate	1.00%
Increase in diluted loss per share | $ / shares	$ 0.10
Restatement Adjustment [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Error Correction, Decrease In Assets		$ 42.1
Error Correction, Decrease In Liabilities		42.1
Receivables, Net [Member] | Restatement Adjustment [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Error Correction, Decrease In Assets		77.2
Error Correction, Decrease In Cash Flows		6.8	$ 3.1
Servicer And Protective Advances, Net [Member] | Restatement Adjustment [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Error Correction, Increase In Assets		35.2
Error Correction, Increase In Cash Flows		1.9	1.9
Accounts Payable and Accrued Liabilities [Member] | Restatement Adjustment [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Error Correction, Decrease In Liabilities		42.1
Error Correction, Increase In Cash Flows		$ 4.9	$ 1.2