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SELECTED FINANCIAL STATEMENT INFORMATION (Tables) | 12 Months Ended
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Oct. 31, 2018
Selected Financial Statement Information [Abstract] |
Schedule of Accounts Receivable [Table Text Block] | Accounts Receivable
|  | As of October 31,
(in thousands) |  | 2018 |  | 2017
Accounts receivable |  |  | $254,727 |  |  |  | $225,462 |
Less: Allowance for doubtful accounts |  | (3,258 | ) |  | (3,006 | )
Accounts receivable, net |  |  | $251,469 |  |  |  | $222,456 |
Costs And Estimated Earnings On Uncompleted Percentage Of Completion Contracts [Table Text Block] | Costs and Estimated Earnings on Uncompleted Percentage-of-Completion Contracts
|  | As of October 31,
(in thousands) |  | 2018 |  | 2017
Costs incurred on uncompleted contracts |  |  | $39,350 |  |  |  | $29,491 |
Estimated earnings |  | 19,708 |  |  | 19,902 |
|  | 59,058 |  |  | 49,393 |
Less: Billings to date |  | (45,731 | ) |  | (41,262 | )
|  |  | $13,327 |  |  |  | $8,131 |
Included in the accompanying Consolidated Balance Sheets under the following captions: |  |  |  |
Accounts receivable, net (costs and estimated earnings in excess of billings) |  |  | $14,183 |  |  |  | $9,377 |
Accrued expenses and other current liabilities (billings in excess of costs and estimated earnings) |  | (856 | ) |  | (1,246 | )
|  |  | $13,327 |  |  |  | $8,131 |
Schedule of Inventory [Table Text Block] | Inventories
|  | As of October 31,
(in thousands) |  | 2018 |  | 2017
Finished products |  |  | $192,758 |  |  |  | $173,559 |
Work in process |  | 49,315 |  |  | 39,986 |
Materials, parts, assemblies and supplies |  | 158,039 |  |  | 128,031 |
Contracts in process |  | 1,649 |  |  | 2,415 |
Less: Billings to date |  | (208 | ) |  | (363 | )
Inventories, net of valuation reserves |  |  | $401,553 |  |  |  | $343,628 |
Property, Plant and Equipment [Table Text Block] | Property, Plant and Equipment
|  | As of October 31,
(in thousands) |  | 2018 |  | 2017
Land |  |  | $5,864 |  |  |  | $5,435 |
Buildings and improvements |  | 101,424 |  |  | 91,916 |
Machinery, equipment and tooling |  | 230,108 |  |  | 191,298 |
Construction in progress |  | 5,044 |  |  | 5,553 |
|  | 342,440 |  |  | 294,202 |
Less: Accumulated depreciation and amortization |  | (187,701 | ) |  | (164,319 | )
Property, plant and equipment, net |  |  | $154,739 |  |  |  | $129,883 |
Schedule Of Accrued Expenses and Other Current Liabilities [Table Text Block] | Accrued Expenses and Other Current Liabilities
|  | As of October 31,
(in thousands) |  | 2018 |  | 2017
Accrued employee compensation and related payroll taxes |  |  | $97,048 |  |  |  | $78,058 |
Deferred revenue |  | 28,262 |  |  | 29,247 |
Accrued customer rebates and credits |  | 16,861 |  |  | 12,866 |
Contingent consideration and other accrued purchase consideration |  | 6,138 |  |  | 7,588 |
Other |  | 23,205 |  |  | 19,853 |
Accrued expenses and other current liabilities |  |  | $171,514 |  |  |  | $147,612 |
Schedule of Research and Development Expenses [Table Text Block] | The amount of new product research and development ("R&D") expenses included in cost of sales is as follows (in thousands):
| Year ended October 31,
| 2018 |  | 2017 |  | 2016
R&D expenses |  | $57,450 |  |  |  | $46,473 |  |  |  | $44,726 |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] | Changes in the components of accumulated other comprehensive loss during fiscal 2018 and 2017 are as follows (in thousands):
| Foreign Currency Translation |  | Pension Benefit Obligation |  | Accumulated Other Comprehensive Loss
Balances as of October 31, 2016 |  | ($23,953 | ) |  |  | ($1,373 | ) |  |  | ($25,326 | )
Unrealized gain | 14,420 |  |  | 321 |  |  | 14,741 |
Amortization of unrealized loss | — |  |  | 29 |  |  | 29 |
Balances as of October 31, 2017 | (9,533 | ) |  | (1,023 | ) |  | (10,556 | )
Unrealized (loss) gain | (4,837 | ) |  | 124 |  |  | (4,713 | )
Amortization of unrealized loss | — |  |  | 13 |  |  | 13 |
Balances as of October 31, 2018 |  | ($14,370 | ) |  |  | ($886 | ) |  |  | ($15,256 | )

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