Commitments (Details) (USD $)
In Millions, unless otherwise specified
6 Months Ended
Jun. 30, 2012
Commitments (Additional Textual) [Abstract]  
Commitments to originate mortgage loans $ 8.4
Minimum [Member]
 
Commitments (Textual) [Abstract]  
Percentage of fixed interest rates ranging 4.125%
Maximum [Member]
 
Commitments (Textual) [Abstract]  
Percentage of fixed interest rates ranging 5.50%
Mortgage Loans and Other Investments [Member]
 
Commitments (Textual) [Abstract]  
Commitments to fund mortgage loans and other investments 10.5
Construction-to-Permanent Loan [Member]
 
Commitments (Textual) [Abstract]  
Subsequent funding of the construction-to-permanent loan after the balance sheet date $ 0.3