Product Warranties (Tables)

9 Months Ended

Sep. 30, 2014

Guarantees [Abstract]

Summary of Changes in Product Warranties Reserve

The following table reflects the changes in the Company’s warranty reserve during the three and nine months ended September 30, 2014 and 2013:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2014			2013			2014			2013
Warranty reserve, beginning of period	$	97,190		$	77,341		$	101,507		$	62,742
Provision		12,103			15,798			35,556			49,701
Payments		(14,981	)		(11,403	)		(42,751	)		(30,707	)
Warranty reserve, end of period	$	94,312		$	81,736		$	94,312		$	81,736