BALANCE SHEET COMPONENTS

The following tables reflect the components of significant balance sheet accounts as of September 28, 2013 and September 29, 2012:



	As of
(in thousands)	September 28, 2013			September 29, 2012
Short term investments, available-for-sale:
Deposits maturing within one year (1)	$	3,252		$	—

Inventories, net:
Raw materials and supplies	$	19,703		$	26,660
Work in process	12,219			23,352
Finished goods	20,333			27,599
	52,255			77,611
Inventory reserves	(14,120		)	(18,617		)
	$	38,135		$	58,994
Property, plant and equipment, net:
Land	$	—		$	2,086
Buildings and building improvements	3,060			4,830
Leasehold improvements	15,763			16,005
Data processing equipment and software	24,549			23,819
Machinery, equipment, furniture and fixtures	48,998			40,580
Construction in progress (2)	19,396			3,219
	111,766			90,539
Accumulated depreciation (3)	(64,225		)	(62,098		)
	$	47,541		$	28,441
Accrued expenses and other current liabilities:
Wages and benefits	$	19,779		$	18,734
Accrued customer obligations (4)	8,270			22,984
Commissions and professional fees	2,640			2,776
Severance	1,468			2,840
Other	6,711			10,612
	$	38,868		$	57,946


(1)	All short-term investments were classified as available-for-sale and were measured at fair value based on level one measurement, or quoted market prices, as defined by ASC 820. As of September 28, 2013, fair value approximated the cost basis for short-term investments. The Company did not recognize any realized gains or losses on the sale of investments during fiscal 2013.

(2)

Pursuant to ASC No. 840, Leases, the Company is considered the owner of the building during the construction phase for the Agreement to Develop and Lease (the “ADL”) facility being developed by Mapletree Industrial Trust (the “Landlord”) in Singapore—see Note 12 below. The estimated construction costs incurred to date in relation to the relevant proportion of the Company's lease is recognized on the Consolidated Balance Sheet as at September 28, 2013 and September 29, 2012. Applicable ground lease expense of $0.5 million was accrued as of September 28, 2013.


(3)	The depreciation expense for the years ended September 28, 2013 and September 29, 2012 are $9.3 million and $8.1 million respectively.


(4)	Represents customer advance payments, customer credit program, accrued warranty expense and accrued retrofit costs.