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Accumulated Other Comprehensive Loss
6 Months Ended
Apr. 30, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Accumulated Other Comprehensive Loss [Text Block] Accumulated Other Comprehensive Loss
        Changes in accumulated other comprehensive loss in stockholders' equity (deficit) by component for the three and nine months ended July 31, 2020 is as follows:
Pension and Post Retirement Plan Liability (1)Marketable Securities Adjustment (1)Interest Rate Swap Adjustment (2)Foreign Currency Translation Adjustment (3)Accumulated Other Comprehensive Loss
Balance at April 30, 2020$(37,303)$ $(633)$(32,518)$(70,454)
Other comprehensive income (loss), net of tax  (72)13,671 13,599 
Amounts reclassified from accumulated other comprehensive loss, net of tax290  283  573 
Net current-period other comprehensive income (loss)290  211 13,671 14,172 
Balance at July 31, 2020$(37,013)$ $(422)$(18,847)$(56,282)
Pension and Post Retirement Plan Liability (1)Marketable Securities Adjustment (1) Interest Rate Swap Adjustment (2)Foreign Currency Translation Adjustment (3)Accumulated Other Comprehensive Loss
Balance at October 31, 2019$(37,883)$ $(628)$(26,515)$(65,026)
Other comprehensive income (loss), net of tax  (428)7,668 7,240 
Amounts reclassified from accumulated other comprehensive loss, net of tax870  634  1,504 
Net current-period other comprehensive income (loss)870  206 7,668 8,744 
Balance at July 31, 2020$(37,013)$ $(422)$(18,847)$(56,282)
        (1) Amounts reclassified from accumulated other comprehensive loss, net of tax are classified with other expense included on the statements of operations.
        (2) Amounts reclassified from accumulated other comprehensive loss, net of tax are classified with interest expense included on the statements of operations.
(3) The net investment derivative instrument is recognized in accumulated other comprehensive loss and reclassified to income in the same period when a gain or loss related to that net investment in foreign operation is included in income.