Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended									12 Months Ended
	Oct. 31, 2018	Jul. 31, 2018	Apr. 30, 2018	Jan. 31, 2018	Oct. 31, 2017	Jul. 31, 2017	Apr. 30, 2017	Jan. 31, 2017	Jan. 31, 2016	Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2016
Income Tax Disclosure [Abstract]
Domestic				$ (3,635)				$ 4,251	$ 3,917
Foreign				9,895				2,172	(5,400)
Income before income taxes				(6,260)				(6,423)	$ 1,483	$ (6,260)	$ (6,423)	$ 1,483
Federal										1,998	66	(3,900)
State and Local										(157)	386	329
Foreign										2,710	2,494	1,123
Total current										4,551	2,946	(2,448)
Federal										(10,692)	856	3,289
State and Local										700	(329)	156
Foreign										222	3,647	(6,149)
Deferred Income Tax Expense (Benefit)										(9,770)	4,174	(2,704)
Provision (benefit) for income taxes	$ 4,635	$ (7,014)	$ 218	$ (3,058)	$ 434	$ 4,439	$ 2,323	$ (76)		$ (5,219)	$ 7,120	$ (5,152)