Intangible Assets (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Jul. 31, 2019	Oct. 31, 2017	Oct. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net, Beginning of Period	$ 14,939	$ 15,025
Acquisitions			$ 2,328
Amortization expense	(1,880)	(2,239)
Finite-Lived Intangible Assets, Translation Adjustments	(34)	(175)
Finite-Lived Intangible Assets, Net, End of Period	13,025
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net, Beginning of Period	10,311	11,648
Acquisitions			0
Amortization expense	(1,331)	(1,332)
Finite-Lived Intangible Assets, Translation Adjustments	(3)	(5)
Finite-Lived Intangible Assets, Net, End of Period	8,977
Developed Technology Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net, Beginning of Period	3,404	1,997
Acquisitions			2,328
Amortization expense	(394)	(751)
Finite-Lived Intangible Assets, Translation Adjustments	(31)	(170)
Finite-Lived Intangible Assets, Net, End of Period	2,979
Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net, Beginning of Period	15	31
Acquisitions			0
Amortization expense	(15)	(16)
Finite-Lived Intangible Assets, Translation Adjustments	0	0
Finite-Lived Intangible Assets, Net, End of Period	0
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net, Beginning of Period	1,131	1,254
Acquisitions			0
Amortization expense	(123)	(123)
Finite-Lived Intangible Assets, Translation Adjustments	0	0
Finite-Lived Intangible Assets, Net, End of Period	1,008
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net, Beginning of Period	78	95
Acquisitions			$ 0
Amortization expense	(17)	(17)
Finite-Lived Intangible Assets, Translation Adjustments	0	$ 0
Finite-Lived Intangible Assets, Net, End of Period	$ 61