Commitments And Contingencies (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Sep. 30, 2015
Commitments And Contingencies [Abstract]
Accrued Insurance	$ 4,273	$ 4,518
Liability for Claims and Claims Adjustment Expense	351	$ 464
Estimated cost of completion of bonded project	71,016
Purchase Commitment Amount	1,237
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