Product Warranties (Tables)

6 Months Ended

Jun. 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 six months ended June 30, 2014 and 2013:

	Three Months Ended June 30,						Six Months Ended June 30,
	2014			2013			2014			2013
Warranty reserve, beginning of period	$	98,765		$	63,057		$	101,507		$	62,742
Provision		13,193			25,612			23,453			33,903
Payments		(14,768	)		(11,328	)		(27,770	)		(19,304	)
Warranty reserve, end of period	$	97,190		$	77,341		$	97,190		$	77,341