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 | | | | | | | | | | | | | | | | | |
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