v2.4.0.6
Summary of Components of Acquisition Costs and Other Underwriting Expenses (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Business Acquisition [Line Items]        
Policy acquisition expenses $ 85,857 $ 56,499 $ 171,049 $ 103,316
Salaries and benefits 40,832 31,969 76,617 59,891
Other insurance general and administrative expenses 3,024 1,112 6,072 7,607
Acquisition costs and other underwriting expenses $ 129,713 $ 89,580 $ 253,738 $ 170,814