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General (Details) (USD $)
Share data in Thousands, unless otherwise specified
3 Months Ended 0 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Feb. 14, 2014
2014 Swap [Member]
Mar. 31, 2014
2014 Swap [Member]
Mar. 31, 2014
2014 Swap [Member]
LIBOR [Member]
General [Abstract]          
Potentially dilutive securities (in shares) 48 109      
Deferred policy acquisition cost amortization $ 129,814,000 $ 123,722,000      
Advertising expenses 6,000,000        
Derivative [Line Items]          
Term of swap agreement     3 years    
Basis spread on variable rate         1.40%
Notional amount       38,000,000  
Swap agreement collateral       $ 30,000,000