Quarterly report pursuant to Section 13 or 15(d)

Components of Servicing Revenue (Details)

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Components of Servicing Revenue (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Components of Servicing Revenue [Line Items]      
Contractually Specified Servicing Fees, Amount $ 31,237us-gaap_ContractuallySpecifiedServicingFeesAmount $ 29,871us-gaap_ContractuallySpecifiedServicingFeesAmount  
Ancillary Fee Income Generated by Servicing Financial Assets, Amount 564us-gaap_AncillaryFeeIncomeGeneratedByServicingFinancialAssetsAmount 463us-gaap_AncillaryFeeIncomeGeneratedByServicingFinancialAssetsAmount  
Float Income Generated by Servicing Financial Assets, Amount 286two_FloatIncomeGeneratedbyServicingFinancialAssetsAmount 107two_FloatIncomeGeneratedbyServicingFinancialAssetsAmount  
Contractually Specified Servicing Fees, Late Fees, and Ancillary Fees Earned in Exchange for Servicing Financial Assets 32,087us-gaap_ContractuallySpecifiedServicingFeesLateFeesAndAncillaryFeesEarnedInExchangeForServicingFinancialAssets 30,441us-gaap_ContractuallySpecifiedServicingFeesLateFeesAndAncillaryFeesEarnedInExchangeForServicingFinancialAssets  
Servicing advances $ 30,837us-gaap_OtherPrepaidExpenseCurrent   $ 27,490us-gaap_OtherPrepaidExpenseCurrent