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Insurance Operations - Change in Liability for Unpaid Losses and LAE (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Insurance [Abstract]      
Balance at beginning of year $ 193,241 $ 187,215  
Less reinsurance recoverable (81,415) (88,002)  
Net balance at beginning of period 111,826 99,213  
Incurred (recovered) related to current year 111,560 119,458 112,838
Incurred (recovered) related to prior years (2,945) 6,729 11,471
Total incurred 108,615 126,187  
Paid related to Current year 62,529 54,141  
Paid related to Prior years 67,274 59,433  
Total paid 129,803 113,574 104,910
Net balance at end of period 90,638 111,826 99,213
Plus reinsurance recoverable 68,584 81,415  
Balance at end of year $ 159,222 $ 193,241 $ 187,215