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Commitments And Contingencies (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015
Commitments And Contingencies [Abstract] |  |
Accrued Insurance | $ 5,464 | $ 4,518
Liability for Claims and Claims Adjustment Expense | 235 | $ 464
Estimated cost of completion of bonded project | 54,287 |
Other Commitments [Line Items] |  |
Letters of Credit Outstanding, Amount | 6,944 |
Insurance Related [Member] |  |
Other Commitments [Line Items] |  |
Letters of Credit Outstanding, Amount | 6,126 |
Vendor Related [Member] |  |
Other Commitments [Line Items] |  |
Letters of Credit Outstanding, Amount | $ 818 |
Capstone [Member] |  |
Loss Contingencies [Line Items] |  |
Loss Contingency Name Of Plaintiff | Capstone Building Corporation (“Capstone”) |
Loss Contingency, Damages Sought, Value | $ 10,406 |
Loss Contingency Opinion Of Counsel | To date, the Company has not established a reserve with respect to this matter, as we believe the likelihood of our responsibility for damages is not probable and a potential range of exposure is not reasonably estimable. |

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