Intangible Assets(Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Oct. 31, 2014	Oct. 31, 2013	Apr. 30, 2014
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net, Beginning of Period	$ 21,998	$ 17,605
Finite-Lived Intangible Assets, Translation Adjustments	(108)	0
Amortization expense	2,255	1,349
Finite-Lived Intangible Assets, Gross	25,710	18,954
Finite-Lived Intangible Assets, Translation Adjustments	(108)
Finite-Lived Intangible Assets, Accumulated Amortization	(3,604)	(1,349)
Finite-Lived Intangible Assets, Net, End of Period	17,605	0
Total amortization expense	(2,255)	(1,349)
2015	2,349
2016	2,287
2017	2,287
2018	2,151
2019	1,745
Thereafter	11,179
Future Amortization			21,998
Trade Name, Finite Intangible Asset [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net, Beginning of Period	1,624	1,747
Finite-Lived Intangible Assets, Translation Adjustments	0	0
Finite-lived Intangible Assets Acquired	0	1,875
Amortization expense	123	128
Finite-Lived Intangible Assets, Net, End of Period	1,747	0
Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net, Beginning of Period	62	434
Finite-Lived Intangible Assets, Translation Adjustments	0	0
Finite-lived Intangible Assets Acquired	0	744
Amortization expense	372	310
Finite-Lived Intangible Assets, Net, End of Period	434	0
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net, Beginning of Period	15,856	12,691
Finite-Lived Intangible Assets, Translation Adjustments	(108)	0
Finite-lived Intangible Assets Acquired	4,456	13,462
Amortization expense	1,183	771
Finite-Lived Intangible Assets, Net, End of Period	12,691	0
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net, Beginning of Period	145	162
Finite-Lived Intangible Assets, Translation Adjustments	0	0
Finite-lived Intangible Assets Acquired	0	166
Amortization expense	17	4
Finite-Lived Intangible Assets, Net, End of Period	162	0
Developed Technology Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net, Beginning of Period	4,311	2,571
Finite-Lived Intangible Assets, Translation Adjustments	0	0
Finite-lived Intangible Assets Acquired	2,300	2,707
Amortization expense	560	136
Finite-Lived Intangible Assets, Net, End of Period	2,571	0
Contech [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	15 years
Contech [Member] | Trade Name, Finite Intangible Asset [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net, Beginning of Period	0
Finite-Lived Intangible Asset, Useful Life	0 years 3 months
Finite-Lived Intangible Assets, Gross	25	25
Finite-Lived Intangible Assets, Accumulated Amortization	(25)	(25)
Finite-Lived Intangible Assets, Net, End of Period	0
Contech [Member] | Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net, Beginning of Period	145
Finite-Lived Intangible Asset, Useful Life	10 years
Finite-Lived Intangible Assets, Gross	166	166
Finite-Lived Intangible Assets, Accumulated Amortization	(21)	(4)
Finite-Lived Intangible Assets, Net, End of Period	162
Contech [Member] | Developed Technology Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net, Beginning of Period	2,030
Finite-Lived Intangible Asset, Useful Life	5 years
Finite-Lived Intangible Assets, Gross	2,707	2,707
Finite-Lived Intangible Assets, Accumulated Amortization	(677)	(136)
Finite-Lived Intangible Assets, Net, End of Period	2,571
Pleasant Prairie [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	15 years
Pleasant Prairie [Member] | Trade Name, Finite Intangible Asset [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net, Beginning of Period	1,624	1,747
Finite-Lived Intangible Asset, Useful Life	15 years	15 years
Finite-Lived Intangible Assets, Gross	1,850	1,850
Finite-Lived Intangible Assets, Accumulated Amortization	(226)	(103)
Finite-Lived Intangible Assets, Net, End of Period	1,747
Pleasant Prairie [Member] | Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net, Beginning of Period	62	434
Finite-Lived Intangible Asset, Useful Life	2 years	2 years
Finite-Lived Intangible Assets, Gross	744	744
Finite-Lived Intangible Assets, Accumulated Amortization	(682)	(310)
Finite-Lived Intangible Assets, Net, End of Period	434
Pleasant Prairie [Member] | Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net, Beginning of Period	11,564	12,691
Finite-Lived Intangible Asset, Useful Life	13 years	13 years
Finite-Lived Intangible Assets, Gross	13,462	13,462
Finite-Lived Intangible Assets, Accumulated Amortization	(1,898)	(771)
Finite-Lived Intangible Assets, Net, End of Period	12,691
Finnveden [Member] | Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net, Beginning of Period	992
Finite-Lived Intangible Asset, Useful Life	10 years
Finite-Lived Intangible Assets, Gross	1,136
Finite-Lived Intangible Assets, Translation Adjustments	(108)
Finite-Lived Intangible Assets, Accumulated Amortization	(36)
Radar Industries [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	15 years
Radar Industries [Member] | Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net, Beginning of Period	3,300
Finite-Lived Intangible Asset, Useful Life	14 years
Finite-Lived Intangible Assets, Gross	3,320
Finite-Lived Intangible Assets, Accumulated Amortization	(20)
Radar Industries [Member] | Developed Technology Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net, Beginning of Period	2,281
Finite-Lived Intangible Asset, Useful Life	10 years
Finite-Lived Intangible Assets, Gross	2,300
Finite-Lived Intangible Assets, Accumulated Amortization	$ (19)