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Loans Payable (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Loans Payable (Textual) [Abstract]  
Loans payable $ 39.2
American Safety Capital [Member]
 
Debt Instrument [Line Items]  
Variable rate 30-year trust preferred securities 8
Interest payment at a floating rate of LIBOR 4.20%
Maturity period of trust preferred securities 30 years
American Safety Capital II [Member]
 
Debt Instrument [Line Items]  
Variable rate 30-year trust preferred securities 5
Interest payment at a floating rate of LIBOR 3.95%
Maturity period of trust preferred securities 30 years
American Safety Capital Trust III [Member]
 
Debt Instrument [Line Items]  
Variable rate 30-year trust preferred securities $ 25
Interest payment at a floating rate of LIBOR 3.40%
Maturity period of trust preferred securities 30 years