BALANCE SHEET COMPONENTS

The following tables reflect the components of significant balance sheet accounts as of December 27, 2014 and September 27, 2014:



	As of
(in thousands)	December 27, 2014			September 27, 2014
Short term investments, available-for-sale:
Deposits maturing within one year (1)	$	10,787		$	9,105

Inventories, net:
Raw materials and supplies	$	22,712		$	22,184
Work in process	24,545			18,783
Finished goods	18,203			22,590
	65,460			63,557
Inventory reserves	(13,530		)	(13,863		)
	$	51,930		$	49,694
Property, plant and equipment, net:
Buildings and building improvements	$	31,178		$	31,159
Leasehold improvements	13,873			13,962
Data processing equipment and software	27,612			27,538
Machinery, equipment, furniture and fixtures	47,593			45,442
	120,256			118,101
Accumulated depreciation	(67,463		)	(65,346		)
	$	52,793		$	52,755
Accrued expenses and other current liabilities:
Wages and benefits	$	13,355		$	21,498
Accrued customer obligations (2)	6,347			8,999
Commissions and professional fees	2,314			1,961
Deferred rent	2,422			2,161
Severance	617			1,067
Other	7,489			8,045
	$	32,544		$	43,731

(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 December 27, 2014 and September 27, 2014, 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 the three months ended December 27, 2014 and December 28, 2013.


(2)	Represents customer advance payments, customer credit program, accrued warranty expense and accrued retrofit obligations.