Intangible Assets Intangible Assets(Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended	3 Months Ended			3 Months Ended		3 Months Ended		3 Months Ended
	Oct. 31, 2013	Jul. 31, 2013 Plesant Prairie [Member]	Jul. 31, 2013 Plesant Prairie [Member] Trade Name, Finite Intangible Asset [Member]	Oct. 31, 2013 Plesant Prairie [Member] Trade Name, Finite Intangible Asset [Member]	Jul. 31, 2013 Plesant Prairie [Member] Noncompete Agreements [Member]	Oct. 31, 2013 Plesant Prairie [Member] Noncompete Agreements [Member]	Jul. 31, 2013 Plesant Prairie [Member] Customer Relationships [Member]	Oct. 31, 2013 Plesant Prairie [Member] Customer Relationships [Member]	Oct. 31, 2013 Contech [Member]	Oct. 31, 2013 Contech [Member] Trade Name, Finite Intangible Asset [Member]	Oct. 31, 2013 Contech [Member] Trademarks [Member]	Oct. 31, 2013 Contech [Member] Developed Technology Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Useful Life		15 years	15 years		2 years		13 years		15 years	0 years 3 months	10 years	5 years
Cost	$ 18,954			$ 1,850		$ 744		$ 13,462		$ 25	$ 166	$ 2,707
Accumulated Amortization	1,349			103		310		771		(25)	(4)	(136)
Net	17,605			1,747		434		12,691		0	162	2,571
Amortization Expense	1,349
Next Twelve Months	2,180
Year Two	1,779
Year Three	1,717
Year Four	1,717
Year Five	1,582
Thereafter	8,630
Future Amortization	$ 17,605