Operation Segments (Tables)

9 Months Ended

Jun. 30, 2015

Operating Segments [Abstract]

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

		Three Months Ended June 30, 2015
							Commercial &		Infrastructure
			Communications		Residential		Industrial		Solutions		Corporate		Total
Revenues			$	35,516	$	52,991	$	44,406	$	11,169	$	-	$	144,082
Cost of services				28,451		42,615		39,161		8,803		-		119,030
Gross profit				7,065		10,376		5,245		2,366		-		25,052
Selling, general and administrative				4,275		7,709		3,776		2,463		2,323		20,546
Loss (gain) on sale of assets				(31)		-		(16)		-		-		(47)
Income (loss) from operations			$	2,821	$	2,667	$	1,485	$	(97)	$	(2,323)	$	4,553
Other data:
	Depreciation and amortization expense		$	141	$	120	$	71	$	236	$	68	$	636
	Capital expenditures		$	174	$	64	$	130	$	366	$	-	$	734
	Total assets		$	39,096	$	37,690	$	45,776	$	28,266	$	61,678	$	212,506

		Three Months Ended June 30, 2014
							Commercial &		Infrastructure
			Communications		Residential		Industrial		Solutions		Corporate		Total
Revenues			$	34,783	$	49,428	$	38,878	$	13,103	$	-	$	136,192
Cost of services				28,086		39,721		35,158		10,561		-		113,526
Gross profit				6,697		9,707		3,720		2,542		-		22,666
Selling, general and administrative				3,633		7,325		3,188		2,397		2,567		19,110
Loss (gain) on sale of assets				-		-		(10)		-		-		(10)
Income (loss) from operations			$	3,064	$	2,382	$	542	$	145	$	(2,567)	$	3,566
Other data:
	Depreciation and amortization expense		$	102	$	123	$	70	$	248	$	86	$	629
	Capital expenditures		$	76	$	126	$	116	$	209	$	-	$	527
	Total assets		$	29,243	$	38,373	$	46,720	$	28,552	$	35,969	$	178,857

		Nine Months Ended June 30, 2015
							Commercial &		Infrastructure
			Communications		Residential		Industrial		Solutions		Corporate		Total
Revenues			$	95,269	$	151,753	$	132,677	$	34,471	$	-	$	414,170
Cost of services				78,132		122,523		117,331		26,721		-		344,707
Gross profit				17,137		29,230		15,346		7,750		-		69,463
Selling, general and administrative				11,377		22,741		11,155		6,795		6,585		58,653
Loss (gain) on sale of assets				(24)		4		(18)		(2)		-		(40)
Income (loss) from operations			$	5,784	$	6,485	$	4,209	$	957	$	(6,585)	$	10,850
Other data:
	Depreciation and amortization expense		$	388	$	362	$	207	$	640	$	209	$	1,806
	Capital expenditures		$	644	$	257	$	297	$	1,023	$	164	$	2,385
	Total assets		$	39,096	$	37,690	$	45,776	$	28,266	$	61,678	$	212,506

		Nine Months Ended June 30, 2014
							Commercial &		Infrastructure
			Communications		Residential		Industrial		Solutions		Corporate		Total
Revenues			$	84,521	$	132,821	$	122,443	$	36,752	$	-	$	376,537
Cost of services				69,751		108,044		108,957		28,976		-		315,728
Gross profit				14,770		24,777		13,486		7,776		-		60,809
Selling, general and administrative				9,778		20,739		10,911		7,080		7,347		55,855
Loss (gain) on sale of assets				-		(41)		(35)		3		-		(73)
Income (loss) from operations			$	4,992	$	4,079	$	2,610	$	693	$	(7,347)	$	5,027
Other data:
	Depreciation and amortization expense		$	303	$	364	$	203	$	732	$	289	$	1,891
	Capital expenditures		$	127	$	289	$	171	$	720	$	115	$	1,422
	Total assets		$	29,243	$	38,373	$	46,720	$	28,552	$	35,969	$	178,857