Goodwill and Intangible Assets (Tables)

12 Months Ended

Sep. 30, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill [Table Text Block]

			Commercial		Infrastructure
	Residential		& Industrial		Solutions		Total
Balance at September 30, 2014	$	8,631	$	-	$	6,362	$	14,993
Acquisitions "Note 18"		-		-		2,256		2,256
Balance at September 30, 2015		8,631		-		8,618		17,249
Acquisitions "Note 18"		-		3,806		19,458		23,264
Divestitures "Note 18"		-		-		(577)		(577)
Balance at September 30, 2016	$	8,631	$	3,806	$	27,499	$	39,936

Schedule Of Intangible Assets And Goodwill [Table Text Block]

		September 30, 2016
	Estimated
	Useful Lives		Gross Carrying		Accumulated
	(in Years)		Amount		Amortization	Net
Trademarks/trade names	5 - 20	$	3,845	$	139	$	3,706
Technical library	20		400		61		339
Customer relationships	6 - 15		27,414		2,003		25,411
Developed technology	4		400		358		42
Backlog	1		1,621		545		1,076
Construction contracts	1		2,191		1,042		1,149
Total		$	35,871	$	4,148	$	31,723

		September 30, 2015
	Estimated
	Useful Lives		Gross Carrying		Accumulated
	(in Years)		Amount		Amortization	Net
Trademarks/trade names	8 - Indefinite	$	1,400	$	9	$	1,391
Technical library	20		400		41		359
Customer relationships	8 - 12		3,600		788		2,812
Covenants not to compete	3		140		121		19
Developed technology	4		400		258		142
Total		$	5,940	$	1,217	$	4,723

Schedule Of Finite Lived Intangible Assets Future Amortization Expense [Table Text Block]

Year Ended September 30,
2017	$	5,050
2018		3,154
2019		2,903
2020		2,818
2021		2,714
Thereafter		15,084
Total	$	31,723