BALANCE SHEET COMPONENTS (Tables)

3 Months Ended

Dec. 28, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Components of significant balance sheet accounts

The following tables reflect the components of significant balance sheet accounts as of December 28, 2019 and September 28, 2019:

	As of
(in thousands)	December 28, 2019			September 28, 2019
Short term investments, available-for-sale(1)	$	119,000		$	229,000
Inventories, net:
Raw materials and supplies	$	51,651		$	52,853
Work in process	37,481			32,026
Finished goods	36,122			33,742
	125,254			118,621
Inventory reserves	(30,045		)	(29,313		)
	$	95,209		$	89,308
Property, plant and equipment, net:
Land	$	2,182		$	2,182
Buildings and building improvements	22,282			41,961
Leasehold improvements	24,542			24,441
Data processing equipment and software	36,626			36,302
Machinery, equipment, furniture and fixtures	73,018			71,465
Construction in progress	6,769			6,512
	165,419			182,863
Accumulated depreciation	(108,593		)	(110,493		)
	$	56,826		$	72,370
Accrued expenses and other current liabilities:
Accrued customer obligations (2)	$	26,484		$	26,292
Wages and benefits	18,473			18,188
Dividend payable	7,651			7,582
Commissions and professional fees	2,432			2,024
Deferred rent	—			1,721
Severance	1,205			1,500
Other	6,277			7,226
	$	62,522		$	64,533

(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. The Company did not recognize any realized gains or losses on the sale of investments during the three months ended December 28, 2019 and December 29, 2018.

(2)

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