Commitments And Contingencies (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Sep. 30, 2014
Commitments And Contingencies [Abstract]
Accrued Insurance	$ 4,518	$ 4,560
Liability for Claims and Claims Adjustment Expense	464
Estimated cost of completion of bonded project		$ 85,860
Other Commitments [Line Items]
Letters of Credit Outstanding, Amount	6,918
Insurance Related [Member]
Other Commitments [Line Items]
Letters of Credit Outstanding, Amount	6,347
Vendor Related [Member]
Other Commitments [Line Items]
Letters of Credit Outstanding, Amount	$ 571