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Business Acquisitions - Narrative (Details)
$ in Millions
Dec. 31, 2018
USD ($)
Business Acquisition [Line Items]  
State net operating loss carryforwards $ 50.3
State tax credits 9.2
PHH Corporation [Member]  
Business Acquisition [Line Items]  
Federal net operating loss carryforwards 30.2
State net operating loss carryforwards 50.3
State tax credits 9.2
UNITED STATES  
Business Acquisition [Line Items]  
Net operating loss carryforwards 58.2
VIRGIN ISLANDS, US  
Business Acquisition [Line Items]  
Net operating loss carryforwards $ 3.1