Accrued Expenses and Other Current Liabilities (Tables)

3 Months Ended

Oct. 31, 2012

Accrued Liabilities, Current [Abstract]

Accrued expenses and other current liabilities

	October 31, 2012		July 31, 2012
Accrued wages and benefits	$	9,966,000	16,467,000
Accrued warranty obligations (see below)	8,510,000		7,883,000
Accrued commissions and royalties	5,209,000		3,946,000
Accrued business acquisition payments (see below)	1,248,000		1,752,000
Other	8,155,000		10,822,000
Accrued expenses and other current liabilities	$	33,088,000	40,870,000

Product warranty rollforward

	Three months ended October 31,
	2012			2011
Balance at beginning of period	$	7,883,000		9,120,000
Provision for warranty obligations	2,237,000			1,624,000
Charges incurred	(1,610,000		)	(1,461,000	)
Balance at end of period	$	8,510,000		9,283,000