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Insurance Operations - Change in Liability for Unpaid Losses and LAE (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Insurance [Abstract]    
Balance at beginning of period $ 159,222 $ 193,241
Less reinsurance recoverable (68,584) (81,415)
Net balance at beginning of period 90,638 111,826
Incurred (recovered) related to current year 26,855 26,654
Incurred (recovered) related to prior years (30) (171)
Total incurred 26,825 26,483
Paid related to Current year 3,867 1,172
Paid related to Prior years 27,148 30,289
Total paid 31,015 31,461
Net balance at end of period 86,448 106,848
Plus reinsurance recoverable 64,109 75,680
Balance at end of period $ 150,557 $ 182,528