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Accrued Expenses and Other Liabilities - Summary of Changes in Reserves (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Product Warranties Disclosures [Abstract]        
Reserve - beginning of period $ 42,956 $ 39,254 $ 44,595 $ 34,814
Additions to reserves 4,814 5,513 7,514 7,707
Costs and claims incurred (5,516) (5,047) (11,450) (7,060)
Change in estimates to pre-existing reserves 335 567 1,930 4,826
Reserve - end of period $ 42,589 $ 40,287 $ 42,589 $ 40,287