Accrued Expenses and Other Liabilities - Summary of Changes in Reserves (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Payables and Accruals [Abstract]
Standard product warranty term (in years)			1 year
Changes in Warranty Reserves
Reserve - beginning of period	$ 44,342	$ 42,589	$ 43,098	$ 44,595
Additions to reserves	8,902	5,629	19,685	13,143
Costs and claims incurred	(5,173)	(5,032)	(17,720)	(16,482)
Change in estimates to pre-existing reserves	(1,590)	737	1,418	2,667
Reserve - end of period	$ 46,481	$ 43,923	$ 46,481	$ 43,923