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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Tables) | 6 Months Ended
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Apr. 30, 2022
Schedule of Fair Value of Derivative Instruments | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | April 30, 2022 | ​ | October 31, 2021 | ​
​ | ​ | Balance Sheet | ​ | Fair | ​ | Balance Sheet | ​ | Fair | ​
Derivatives |  | Location |  | Value |  | Location |  | Value |
Designated as Hedging Instruments: | ​ |  | ​ | ​ |  | ​ |  | ​ | ​ |  | ​
Foreign exchange forward contracts | ​ | Derivative assets | ​ | $ | 2,238 | ​ | Derivative assets | ​ | $ | 646 | ​
Foreign exchange forward contracts | ​ | Derivative liabilities | ​ | $ | 1,742 | ​ | Derivative liabilities | ​ | $ | 403 | ​
​ | ​ |  | ​ |  | ​ | ​ | ​ | ​ |  |  | ​
Not Designated as Hedging Instruments: | ​ |  | ​ |  | ​ | ​ | ​ | ​ | ​ |  | ​
Foreign exchange forward contracts | ​ | Derivative assets | ​ | $ | 1,041 | ​ | Derivative assets | ​ | $ | 259 | ​
Foreign exchange forward contracts | ​ | Derivative liabilities | ​ | $ | 453 | ​ | Derivative liabilities | ​ | $ | 64 | ​
Schedule of Effect of Derivative Instruments on the Balance Sheets, Statements of Changes in Shareholders' Equity and Statements of Operations | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Location of Gain | ​ | Amount of Gain | ​
​ | ​ | Amount of Gain (Loss) | ​ | (Loss) Reclassified | ​ | (Loss) Reclassified | ​
​ | ​ | Recognized in Other | ​ | from Other | ​ | from Other | ​
​ | ​ | Comprehensive | ​ | Comprehensive | ​ | Comprehensive | ​
​ | ​ | Income (Loss) | ​ | Income (Loss) | ​ | Income (Loss) | ​
​ | ​ | Six Months Ended | ​ | ​ | ​ | Six Months Ended | ​
​ | ​ | April 30, | ​ | ​ | ​ | April 30, | ​
Derivatives |  | 2022 |  | 2021 |  | ​ |  | 2022 |  | 2021 |
Designated as Hedging Instruments: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(Effective Portion) |  | ​ |  | ​ | ​ | ​ | ​ |  | ​ | ​ |  |  | ​ | ​ |
Foreign exchange forward contracts – Intercompany sales/purchases | ​ | $ | 294 | ​ | $ | (629) | ​ | Cost of sales and service | ​ | $ | (226) |  | $ | 719 | ​
Foreign exchange forward contract – Net investment | ​ | $ | 221 | ​ | $ | (80) | ​ |  | ​ |  |  |  |  |  | ​
Schedule of derivative instruments not designated as hedging instruments | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Location of Gain | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | (Loss) Recognized | ​ | Amount of Gain (Loss)
Derivatives |  | in Operations | ​ | Recognized in Operations
​ | ​ | ​ | ​ | Three Months Ended
​ | ​ | ​ | ​ | April 30,
​ | ​ | ​ |  | 2022 |  | 2021
Not Designated as Hedging Instruments: |  |  |  | ​ |  |  | ​ | ​
Foreign exchange forward contracts |  | Other income (expense), net | ​ | $ | 581 |  | $ | (590)
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Location of Gain | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | (Loss) Recognized | ​ | Amount of Gain (Loss) | ​
Derivatives | ​ | in Operations | ​ | Recognized in Operations | ​
​ | ​ | ​ | ​ | Six Months Ended | ​
​ | ​ | ​ | ​ | April 30, | ​
Derivatives |  | ​ |  | 2022 |  | 2021 |
Not Designated as Hedging Instruments: |  |  |  | ​ |  |  | ​ | ​ |
Foreign exchange forward contracts |  | Other income (expense), net | ​ | $ | 779 |  | $ | (1,403) |
Schedule of changes in the components of Accumulated other comprehensive loss, net of tax | The following table presents the changes in the components of Accumulated other comprehensive income (loss), net of tax, for the three months ended April 30, 2022 (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Foreign Currency | ​ | Cash Flow | ​ | ​ | ​
​ |  | Translation |  | Hedges |  | Total
Balance, January 31, 2022 | ​ | $ | (3,178) |  | $ | 411 | ​ | $ | (2,767)
Other comprehensive income (loss) before reclassifications | ​ |  | (8,033) | ​ |  | (41) | ​ |  | (8,074)
Reclassifications | ​ |  | — | ​ |  | 77 | ​ |  | 77
Balance, April 30, 2022 | ​ | $ | (11,211) |  | $ | 447 | ​ | $ | (10,764)
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Foreign | ​ | Cash | ​ | ​ | ​
​ | ​ | Currency | ​ | Flow | ​ | ​ | ​
​ |  | Translation |  | Hedges |  | Total
Balance, October 31, 2021 | ​ | $ | (1,668) |  | $ | (73) | ​ | $ | (1,741)
Other comprehensive income (loss) before reclassifications | ​ |  | (9,543) | ​ |  | 294 | ​ |  | (9,249)
Reclassifications | ​ |  | — | ​ |  | 226 | ​ |  | 226
Balance, April 30, 2022 | ​ | $ | (11,211) |  | $ | 447 | ​ | $ | (10,764)
Designated as Hedging Instrument |
Schedule of Effect of Derivative Instruments on the Balance Sheets, Statements of Changes in Shareholders' Equity and Statements of Operations | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Location of Gain | ​ | Amount of Gain
​ | ​ | Amount of Gain (Loss) | ​ | (Loss) Reclassified | ​ | (Loss) Reclassified
​ | ​ | Recognized in Other | ​ | from Other | ​ | from Other
​ | ​ | Comprehensive | ​ | Comprehensive | ​ | Comprehensive
Derivatives | ​ | Income (Loss) | ​ | Income (Loss) | ​ | Income (Loss)
​ | ​ | Three Months Ended | ​ | ​ | ​ | Three Months Ended
​ | ​ | April 30, | ​ | ​ | ​ | April 30,
​ |  | 2022 |  | 2021 |  | ​ |  | 2022 |  | 2021
Designated as Hedging Instruments: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(Effective portion) |  | ​ |  | ​ | ​ | ​ | ​ |  | ​ | ​ |  |  | ​ | ​
Foreign exchange forward contracts – Intercompany sales/purchases | ​ | $ | (41) | ​ | $ | (75) | ​ | Cost of sales and service | ​ | $ | (77) |  | $ | 340
Foreign exchange forward contract – Net investment | ​ | $ | 152 | ​ | $ | 30 | ​ |  | ​ |  |  |  |  |

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