Operation Segments (Tables)

12 Months Ended

Sep. 30, 2012

Operating Segments [Abstract]

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

		Years Ended September 30, 2012
							Commercial &
			Communications		Residential		Industrial		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

		Years Ended September 30, 2011
							Commercial &
			Communications		Residential		Industrial		Corporate		Total
Revenues			$	83,615	$	114,732	$	207,794	$	-	$	406,141
Cost of services				71,142		96,042		194,573		-		361,757
Gross profit				12,473		18,690		13,221		-		44,384
Selling, general and administrative				9,578		18,441		21,788		13,514		63,321
Loss (gain) on sale of assets				-		116		(33)		(6,638)		(6,555)
Asset Impairments				72		-		71		4,661		4,804
Income (loss) from operations			$	2,823	$	133	$	(8,605)	$	(11,537)	$	(17,186)
Other data:
	Depreciation and amortization expense		$	278	$	514	$	1,575	$	3,849	$	6,216
	Capital expenditures		$	928	$	181	$	431	$	1,148	$	2,688
	Total assets		$	23,073	$	23,584	$	79,506	$	54,081	$	180,244

		Years Ended September 30, 2010
							Commercial &
			Communications		Residential		Industrial		Corporate		Total
Revenues			$	69,171	$	115,947	$	197,313	$	-	$	382,431
Cost of services				56,760		92,422		177,757		-		326,939
Gross profit				12,411		23,525		19,556		-		55,492
Selling, general and administrative				7,298		23,736		29,047		14,170		74,251
Loss (gain) on sale of assets				-		23		(86)		(65)		(128)
Restructuring charge				16		-		698		49		763
Income (loss) from operations			$	5,097	$	(234)	$	(10,103)	$	(14,154)	$	(19,394)
Other data:
	Depreciation and amortization expense		$	370	$	949	$	1,979	$	1,534	$	4,832
	Capital expenditures		$	31	$	178	$	363	$	352	$	924
	Total assets		$	28,092	$	27,279	$	86,335	$	66,154	$	207,860