Operation Segments (Tables)

12 Months Ended

Sep. 30, 2014

Operating Segments [Abstract]

Schedule of Segment Reporting Information, by Segment [Table Text Block]

		Years Ended September 30, 2014
							Commercial &		Infrastructure
			Communications		Residential		Industrial		Solutions		Corporate		Total
Revenues			$	116,073	$	182,514	$	166,249	$	47,559	$	-	$	512,395
Cost of services				94,904		148,685		148,081		37,599		-		429,269
Gross profit				21,169		33,829		18,168		9,960		-		83,126
Selling, general and administrative				13,481		27,947		14,479		9,346		10,318		75,571
Gain on sale of assets				6		4		(46)		(50)		-		(86)
Income (loss) from operations			$	7,682	$	5,878	$	3,735	$	664	$	(10,318)	$	7,641
Other data:
	Depreciation and amortization expense		$	414	$	491	$	270	$	980	$	371	$	2,526
	Capital expenditures			331		420		266		828		137		1,982
	Total assets		$	30,415	$	40,555	$	43,937	$	27,272	$	58,929	$	201,108

		Years Ended September 30, 2013
							Commercial &		Infrastructure
			Communications		Residential		Industrial		Solutions		Corporate		Total
Revenues			$	126,348	$	162,611	$	203,481	$	2,153	$	-	$	494,593
Cost of services				102,564		135,384		187,957		1,728		-		427,633
Gross profit				23,784		27,227		15,524		425		-		66,960
Selling, general and administrative				13,610		25,447		14,362		337		12,842		66,598
Loss (gain) on sale of assets				-		(17)		(46)		-		(1)		(64)
Income (loss) from operations			$	10,174	$	1,797	$	1,208	$	88	$	(12,841)	$	426
Other data:
	Depreciation and amortization expense		$	372	$	807	$	247	$	38	$	1,088	$	2,552
	Capital expenditures			269		209		270		5		-		753
	Total assets		$	24,858	$	36,838	$	55,342	$	27,889	$	34,325	$	179,252

		Years Ended September 30, 2012
							Commercial &		Infrastructure
			Communications		Residential		Industrial		Solutions		Corporate		Total
Revenues			$	121,492	$	129,974	$	204,649	$	-	$	-	$	456,115
Cost of services				103,288		109,274		185,501		-		-		398,063
Gross profit				18,204		20,700		19,148		-		-		58,052
Selling, general and administrative				13,431		19,703		17,166		-		8,309		58,609
Loss (gain) on sale of assets				(60)		24		(132)		-		-		(168)
Income (loss) from operations			$	4,833	$	973	$	2,114	$	-	$	(8,309)	$	(389)
Other data:
	Depreciation and amortization expense		$	260	$	375	$	244	$	-	$	1,196	$	2,075
	Capital expenditures			569		666		341		-		301		1,877
	Total assets		$	29,603	$	33,927	$	65,929	$	-	$	35,254	$	164,713