Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Oct. 03, 2015	Sep. 27, 2014	Sep. 28, 2013
Cash Flows from Operating Activities:
Net income	$ 45,462	$ 42,009	$ 57,806
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Stock-based compensation	7,351	5,761	3,736
Excess tax benefits from stock-based compensation	(771)	(1,723)	(1,807)
Fair value adjustment to acquired inventory and deferred revenue		564
Net periodic pension benefit cost	986	1,098	1,288
Depreciation and amortization	21,106	19,279	16,589
Deferred income taxes	459	(5,912)	(1,010)
Bad debt provision (recovery), net	1,210	810	(160)
Changes in operating assets and liabilities:
Accounts and unbilled contracts receivable	3,308	(6,245)	(43,179)
Inventories	(4,105)	(4,623)	(9,616)
Prepaid expenses	(1,648)	805	(1,587)
Accounts payable	6,772	(2,777)	(3,973)
Accrued payroll and related costs	(835)	67	1,366
Advance payments from customers	13,065	6,171	(21,082)
Accrued warranty costs	445	(406)	632
Contributions to pension benefit plan	(605)	(638)	(4,575)
Other assets and liabilities	8,236	10,429	3,513
Net Cash Provided by (Used in) Operating Activities	100,436	64,669	(2,059)
Cash Flows from Investing Activities:
Purchases of property and equipment	(18,445)	(20,038)	(29,690)
Purchases of business, net of acquired cash	(667)	(14,192)
Net Cash Used in Investing Activities	(19,112)	(34,230)	(29,690)
Cash Flows from Financing Activities:
Receipts under short-term borrowings	11,183	30,000	35,000
Payments under short-term borrowings	(50,026)	(5,898)	(292)
Excess tax benefits from stock-based compensation	771	1,723	1,807
Cash dividends	(22,445)	(18,330)	(19,113)
Proceeds from exercise of stock options and employee stock purchase plan	4,847	7,590	8,645
Payments to purchase and retire common stock	(29,115)	(31,013)	(24,767)
Net Cash (Used in) Provided by Financing Activities	(84,785)	(15,928)	1,280
Effect of Exchange Rate Changes on Cash and Cash Equivalents	(5,168)	(2,447)	(1,050)
Cash and Cash Equivalents:
Increase (decrease) during the year	(8,629)	12,064	(31,519)
Balance, beginning of year	60,397	48,333	79,852
Balance, end of year	51,768	60,397	48,333
Cash paid during the year for:
Interest	816	594	146
Income taxes	$ 10,199	15,628	22,565
Non-cash financing activities:
Accrued contingent consideration		650
Dividends declared not yet paid		$ 4,476	$ 4,545