Restructuring Restructuring (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Apr. 30, 2019	Jan. 31, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 4,460		$ 1,483	$ 7,466	$ 2,997
Restructuring Reserve [Roll Forward]
Restructuring Expense		$ 7,466
Payments		6,194
Ending Balance		1,887
Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Costs				18,856
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	877		968	1,430	1,579
Restructuring Reserve [Roll Forward]
Restructuring Expense		1,430
Payments		1,543
Ending Balance		254
Legal and Professional Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	2,919		281	4,161	1,112
Restructuring Reserve [Roll Forward]
Restructuring Expense		4,161
Payments		2,776
Ending Balance		1,633
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 664		$ 234	$ 1,875	$ 306
Restructuring Reserve [Roll Forward]
Restructuring Expense		1,875
Payments		1,875
Ending Balance		$ 0