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Operating Segments (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2011
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 123,782 | $ 121,552 | $ 121,995 | $ 127,264 | $ 123,381 | $ 116,128 | $ 107,608 | $ 108,998 | $ 494,593 | $ 456,115 | $ 406,141
Cost of Services |  |  |  |  |  |  |  |  | 427,633 | 398,063 | 361,757
Gross Profit | 17,331 | 15,653 | 15,996 | 17,980 | 16,814 | 14,256 | 13,789 | 13,193 | 66,960 | 58,052 | 44,384
Selling, General and Administrative Expense |  |  |  |  |  |  |  |  | 66,598 | 58,609 | 63,321
Loss (gain) on sale of assets |  |  |  |  |  |  |  |  | (64) | (168) | (6,555)
Asset Impairment |  |  |  |  |  |  |  |  | 0 | 0 | 4,804
Operating Income (Loss) |  |  |  |  |  |  |  |  | 426 | (389) | (17,186)
Depreciation and amortization |  |  |  |  |  |  |  |  | 2,552 | 2,075 | 6,216
Capital Expenditures |  |  |  |  |  |  |  |  | 753 | 1,877 | 2,688
Assets | 179,252 |  |  |  | 164,713 |  |  |  | 179,252 | 164,713 | 180,244
Communications [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 126,348 | 121,492 | 83,615
Cost of Services |  |  |  |  |  |  |  |  | 102,564 | 103,288 | 71,142
Gross Profit |  |  |  |  |  |  |  |  | 23,784 | 18,204 | 12,473
Selling, General and Administrative Expense |  |  |  |  |  |  |  |  | 13,610 | 13,431 | 9,578
Loss (gain) on sale of assets |  |  |  |  |  |  |  |  | 0 | (60) | 0
Asset Impairment |  |  |  |  |  |  |  |  | 0 | 0 | 72
Operating Income (Loss) |  |  |  |  |  |  |  |  | 10,174 | 4,833 | 2,823
Depreciation and amortization |  |  |  |  |  |  |  |  | 372 | 260 | 278
Capital Expenditures |  |  |  |  |  |  |  |  | 269 | 569 | 928
Assets | 24,858 |  |  |  | 29,603 |  |  |  | 24,858 | 29,603 | 23,073
Residential |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 162,611 | 129,974 | 114,732
Cost of Services |  |  |  |  |  |  |  |  | 135,384 | 109,274 | 96,042
Gross Profit |  |  |  |  |  |  |  |  | 27,227 | 20,700 | 18,690
Selling, General and Administrative Expense |  |  |  |  |  |  |  |  | 25,447 | 19,703 | 18,441
Loss (gain) on sale of assets |  |  |  |  |  |  |  |  | (17) | 24 | 116
Asset Impairment |  |  |  |  |  |  |  |  | 0 | 0 | 0
Operating Income (Loss) |  |  |  |  |  |  |  |  | 1,797 | 973 | 133
Depreciation and amortization |  |  |  |  |  |  |  |  | 807 | 375 | 514
Capital Expenditures |  |  |  |  |  |  |  |  | 209 | 666 | 181
Assets | 36,838 |  |  |  | 33,927 |  |  |  | 36,838 | 33,927 | 23,584
Commercial & Industrial [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 203,481 | 204,649 | 207,794
Cost of Services |  |  |  |  |  |  |  |  | 187,957 | 185,501 | 194,573
Gross Profit |  |  |  |  |  |  |  |  | 15,524 | 19,148 | 13,221
Selling, General and Administrative Expense |  |  |  |  |  |  |  |  | 14,362 | 17,166 | 21,788
Loss (gain) on sale of assets |  |  |  |  |  |  |  |  | (46) | (132) | (33)
Asset Impairment |  |  |  |  |  |  |  |  | 0 | 0 | 71
Operating Income (Loss) |  |  |  |  |  |  |  |  | 1,208 | 2,114 | (8,605)
Depreciation and amortization |  |  |  |  |  |  |  |  | 247 | 244 | 1,575
Capital Expenditures |  |  |  |  |  |  |  |  | 270 | 341 | 431
Assets | 55,342 |  |  |  | 65,929 |  |  |  | 55,342 | 65,929 | 79,506
MISCOR [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 2,153 | 0 | 0
Cost of Services |  |  |  |  |  |  |  |  | 1,728 | 0 | 0
Gross Profit |  |  |  |  |  |  |  |  | 425 | 0 | 0
Selling, General and Administrative Expense |  |  |  |  |  |  |  |  | 337 | 0 | 0
Loss (gain) on sale of assets |  |  |  |  |  |  |  |  | 0 | 0 | 0
Asset Impairment |  |  |  |  |  |  |  |  | 0 | 0 | 0
Operating Income (Loss) |  |  |  |  |  |  |  |  | 88 | 0 | 0
Depreciation and amortization |  |  |  |  |  |  |  |  | 38 | 0 | 0
Capital Expenditures |  |  |  |  |  |  |  |  | 5 | 0 | 0
Assets | 27,889 |  |  |  | 0 |  |  |  | 27,889 | 0 | 0
Corporate |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 0 | 0 | 0
Cost of Services |  |  |  |  |  |  |  |  | 0 | 0 | 0
Gross Profit |  |  |  |  |  |  |  |  | 0 | 0 | 0
Selling, General and Administrative Expense |  |  |  |  |  |  |  |  | 12,842 | 8,309 | 13,514
Loss (gain) on sale of assets |  |  |  |  |  |  |  |  | (1) | 0 | (6,638)
Asset Impairment |  |  |  |  |  |  |  |  | 0 | 0 | 4,661
Operating Income (Loss) |  |  |  |  |  |  |  |  | (12,841) | (8,309) | (11,537)
Depreciation and amortization |  |  |  |  |  |  |  |  | 1,088 | 1,196 | 3,849
Capital Expenditures |  |  |  |  |  |  |  |  | 0 | 301 | 1,148
Assets | $ 34,325 |  |  |  | $ 35,254 |  |  |  | $ 34,325 | $ 35,254 | $ 54,081

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