Goodwill and Intangible Assets (Tables)

12 Months Ended

Sep. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill [Table Text Block]

	Commercial		Infrastructure
	& Industrial		Solutions		Residential		Total
Balance at September 30, 2015	$	-	$	8,618	$	8,631	$	17,249
Acquisitions "Note 18"		3,806		19,458		-		23,264
Divestitures "Note 18"		-		(577)		-		(577)
Balance at September 30, 2016		3,806		27,499		8,631		39,936
Acquisitions "Note 18"		3,411		3,710		-		7,121
Divestitures "Note 18"		-		(51)		-		(51)
Purchase Accounting Adjustments		(41)		(272)		-		(313)
Balance at September 30, 2017	$	7,176	$	30,886	$	8,631	$	46,693

Schedule Of Intangible Assets And Goodwill [Table Text Block]

		September 30, 2017
	Estimated
	Useful Lives		Gross Carrying		Accumulated
	(in Years)		Amount		Amortization	Net
Trademarks/trade names	5 - 20	$	4,643	$	440	$	4,203
Technical library	20		400		81		319
Customer relationships	6 - 15		31,115		4,741		26,374
Developed technology	4		-		-		-
Backlog	1		2,412		2,130		282
Construction contracts	1		2,399		2,164		235
Total		$	40,969	$	9,556	$	31,413

		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

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

Year Ended September 30,
2018	$	3,867
2019		3,252
2020		3,167
2021		2,865
2022		2,795
Thereafter		15,467
Total	$	31,413