Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Jul. 02, 2016	Jun. 27, 2015
Cash Flows from Operating Activities
Net Income	$ 21,922	$ 36,275
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Stock-based compensation	5,177	5,681
Excess tax benefits from stock-based compensation	(187)	(603)
Net periodic pension benefit cost	851	748
Depreciation and amortization	14,427	15,518
Deferred income taxes	872	4,548
Bad debt provision (recovery), net	334	965
Changes in operating assets and liabilities
Accounts and unbilled contracts receivable	(7,853)	9,042
Inventories	(6,938)	(9,498)
Prepaid expenses	(2,726)	(2,306)
Accounts payable	4,759	1,938
Accrued payroll and related costs	2,798	(1,956)
Advance payments from customers	23,578	6,813
Accrued warranty costs	159	541
Other assets and liabilities	(11,433)	4,221
Net Cash Provided by (Used in) Operating Activities	45,740	71,927
Cash Flows from Investing Activities
Purchases of property and equipment	(16,194)	(12,676)
Proceeds from sale of property and equipment	1,514	0
(Increase) / decrease in restricted cash	(43,500)	0
Net Cash Provided by (Used in) Investing Activities	(58,180)	(12,676)
Cash Flows from Financing Activities
Proceeds from issuance of common stock, net of issuance costs	74,738	0
Proceeds from issuance of equity component of tangible equity units, net of issuance costs	84,824	0
Payment for capped call transaction	(7,935)	0
Proceeds from issuance of debt component of tangible equity units	27,386	0
Payment of debt issuance costs	(1,405)	0
Receipts under short-term borrowings	20,000	11,202
Payments under short-term borrowings	(41,343)	(35,026)
Excess tax benefits from stock-based compensation	187	603
Cash dividends	(8,935)	(13,569)
Proceeds from exercise of stock options and employee stock purchase plan	3,796	3,858
Payments to purchase and retire common stock	(18,396)	(28,873)
Net Cash Provided by (Used in) Financing Activities	132,917	(61,805)
Effect of Exchange Rate Changes on Cash and Cash Equivalents	468	(4,546)
Cash and Cash Equivalents
Increase (decrease) during the period	120,945	(7,100)
Balance, beginning of period	51,768	60,397
Balance, end of period	172,713	53,297
Cash paid during the period for
Interest	658	677
Income taxes	11,391	8,377
Non-cash financing activities
Dividends declared not yet paid recorded in accrued dividends	4,935	4,392
Common stock issuance costs not yet paid recorded in accounts payable and other accrued liabilities	437	0
Issuance costs on equity component of tangible equity units not yet paid recorded in accounts payable and other accrued liabilities	313	0
Debt issuance costs net yet paid recorded in accounts payable and other accrued liabilities	$ 486	$ 0