Commitments and Guarantees (Tables)

6 Months Ended

Jan. 31, 2013

Product Warranty Liability

The following table presents our product warranty liability for the six months ended January 31, 2013 and 2012:

	Three Months Ended January,						Six Months Ended January,
	2013			2012			2013			2012
Balance at the beginning of the period	$	5,443		$	5,250		$	5,634		$	5,174
Accrual		1,595			1,867			2,879			3,829
Settlements made in cash or in kind during the period		(1,581	)		(1,350	)		(3,056	)		(3,236	)
Balance at the end of the period	$	5,457		$	5,767		$	5,457		$	5,767