Offsetting of Assets and Liabilities (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Repo-Net Amount [Member]
   
Schedule of Liabilities subject to netting agreement [Line Items]    
Repurchase Agreement Totals $ 0 $ 0
Short-term Repurchase Agreements 0 0
Long term repurchase agreements 0 0
Repo-Gross Recognized Liabilities [Member]
   
Schedule of Liabilities subject to netting agreement [Line Items]    
Repurchase Agreement Totals 101,526 122,090
Short-term Repurchase Agreements 17,526 38,090
Long term repurchase agreements 84,000 84,000
Gross Amounts Offset [Member]
   
Schedule of Liabilities subject to netting agreement [Line Items]    
Repurchase Agreement Totals 0 0
Short-term Repurchase Agreements 0 0
Long term repurchase agreements 0 0
Net Amounts Presented [Member]
   
Schedule of Liabilities subject to netting agreement [Line Items]    
Repurchase Agreement Totals 101,526 122,090
Short-term Repurchase Agreements 17,526 38,090
Long term repurchase agreements 84,000 84,000
Gross Amounts Not Offset [Member]
   
Schedule of Liabilities subject to netting agreement [Line Items]    
Repurchase Agreement Totals 101,526 122,090
Short-term Repurchase Agreements 17,526 38,090
Long term repurchase agreements $ 84,000 $ 84,000