Additional information for certain balance sheet accounts for the dates indicated is as follows:


	October 31, 2012		July 31, 2012
Accounts receivable, net of allowance:
Billed	$	72,758	$	91,143
Unbilled (A)		5,524		4,974

	$	78,282	$	96,117

Inventories:
Raw materials	$	85,982	$	73,657
Work-in-process		10,349		9,994
Finished goods		26,994		25,293

	$	123,325	$	108,944

Accrued liabilities:
Accrued employee compensation and benefits	$	16,099	$	25,153
Accrued restructuring charges		-		277
Accrued warranty		5,443		5,634
Other		7,980		10,682

	$	29,522	$	41,746

Advance payments and deferred revenue:
Deferred revenue (B)	$	7,795	$	11,551
Customer deposits		2,788		2,772

	$	10,583	$	14,323

(A)	Total unbilled receivables at October 31, 2012 and July 31, 2012 were $8,522 and $7,653, respectively. At October 31, 2012 and July 31, 2012, the long-term portion of unbilled receivables of $2,998 and $2,678, respectively, was included in non-current other assets.

(B)	Total deferred revenue at October 31, 2012 and July 31, 2012 was $8,585 and $12,267, respectively. At October 31, 2012 and July 31, 2012, the long-term portion of deferred revenue of $790 and $716, respectively, was included in non-current other liabilities.