Annual report pursuant to Section 13 and 15(d)

Derivative Instruments and Hedging Activities Schedule of Interest Rate Swaps Associated with TBA Contracts and MSRs (Details)

v2.4.0.8
Derivative Instruments and Hedging Activities Schedule of Interest Rate Swaps Associated with TBA Contracts and MSRs (Details) (Interest Rate Swaps Associated with TBA Contracts and MSRs [Member], USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Derivative [Line Items]    
Derivative, Notional Amount $ 1,055,000 $ 500,000
Derivative, Average Fixed Interest Rate 1.736%  
Derivative, Average Variable Interest Rate 0.239%  
Derivative, Weighted Average Remaining Maturity 5.654  
Derivative Maturity Over Four Years From Balance Sheet Date [Member]
    
Derivative [Line Items]    
Derivative, Notional Amount 1,055,000  
Derivative, Average Fixed Interest Rate 1.736%  
Derivative, Average Variable Interest Rate 0.239%  
Derivative, Weighted Average Remaining Maturity 5.654  
Derivative Maturity Over One And Within Two Years From Balance Sheet Date [Member]
    
Derivative [Line Items]    
Derivative, Notional Amount   $ 500,000
Derivative, Average Fixed Interest Rate   0.399%
Derivative, Average Variable Interest Rate   0.356%
Derivative, Weighted Average Remaining Maturity   1.775