Quarterly report pursuant to Section 13 or 15(d)

Securitization of Receivables - Summary of Certain Transactions with Securitization Trusts (Details)

v3.10.0.1
Securitization of Receivables - Summary of Certain Transactions with Securitization Trusts (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities [Line Items]    
Gains on securitizations $ 22,349 $ 18,136
Securitization Trust [Member]    
Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities [Line Items]    
Gains on securitizations 31,000 15,000
Purchase of receivables securitized 595,000 277,000
Proceeds from securitizations 626,000 292,000
Cash received from residual and servicing assets 3,000 4,000
Securitization Trust [Member] | Residual Assets [Member]    
Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities [Line Items]    
Residual and servicing assets included in other assets $ 69,000 $ 35,000