Operating Segments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Segment Reporting Information [Line Items]
Revenues	$ 123,381	$ 116,128	$ 107,608	$ 108,998	$ 110,661	$ 104,286	$ 100,033	$ 91,161	$ 456,115	$ 406,141	$ 382,431
Cost of Services									398,063	361,757	326,939
Gross Profit	16,814	14,256	13,789	13,193	13,929	12,983	6,868	10,603	58,052	44,384	55,492
Selling, General and Administrative Expense									58,609	63,321	74,251
Loss (gain) on sale of assets									(168)	(6,555)	(128)
Asset Impairment									0	4,804	0
Restructuring charges for continuing operations									0	0	763
Operating Income (Loss)									(389)	(17,186)	(19,394)
Depreciation and amortization									2,075	6,216	4,832
Capital Expenditures									1,877	2,688	924
Assets	164,713				180,244				164,713	180,244	207,860
Communications
Segment Reporting Information [Line Items]
Revenues									121,492	83,615	69,171
Cost of Services									103,288	71,142	56,760
Gross Profit									18,204	12,473	12,411
Selling, General and Administrative Expense									13,431	9,578	7,298
Loss (gain) on sale of assets									(60)	0
Asset Impairment										72
Restructuring charges for continuing operations											16
Operating Income (Loss)									4,833	2,823	5,097
Depreciation and amortization									260	278	370
Capital Expenditures									569	928	31
Assets	29,603				23,073				29,603	23,073	28,092
Residential
Segment Reporting Information [Line Items]
Revenues									129,974	114,732	115,947
Cost of Services									109,274	96,042	92,422
Gross Profit									20,700	18,690	23,525
Selling, General and Administrative Expense									19,703	18,441	23,736
Loss (gain) on sale of assets									24	116	23
Asset Impairment										0
Restructuring charges for continuing operations											0
Operating Income (Loss)									973	133	(234)
Depreciation and amortization									375	514	949
Capital Expenditures									666	181	178
Assets	33,927				23,584				33,927	23,584	27,279
Commercial & Industrial
Segment Reporting Information [Line Items]
Revenues									204,649	207,794	197,313
Cost of Services									185,501	194,573	177,757
Gross Profit									19,148	13,221	19,556
Selling, General and Administrative Expense									17,166	21,788	29,047
Loss (gain) on sale of assets									(132)	(33)	(86)
Asset Impairment									0	71
Restructuring charges for continuing operations											698
Operating Income (Loss)									2,114	(8,605)	(10,103)
Depreciation and amortization									244	1,575	1,979
Capital Expenditures									341	431	363
Assets	65,929				79,506				65,929	79,506	86,335
Corporate
Segment Reporting Information [Line Items]
Selling, General and Administrative Expense									8,309	13,514	14,170
Loss (gain) on sale of assets									0	(6,638)	(65)
Asset Impairment										4,661
Restructuring charges for continuing operations											49
Operating Income (Loss)									(8,309)	(11,537)	(14,154)
Depreciation and amortization									1,196	3,849	1,534
Capital Expenditures									301	1,148	352
Assets	$ 35,254				$ 54,081				$ 35,254	$ 54,081	$ 66,154