Commitments and Contingencies Level 4 - Contigent Consideration for Acquisitions (Details) (USD $)	9 Months Ended		3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012 Hencorp Acquisition [Member]	Jun. 30, 2012 Hencorp Acquisition [Member]	Jun. 30, 2012 Hanley Group Acquisition [Member]	Jun. 30, 2012 Hanley Group Acquisition [Member]	Jun. 30, 2012 RMI-RMC Acquistion [Member]	Jun. 30, 2012 RMI-RMC Acquistion [Member]	Jun. 30, 2012 Hencorp Acquisition [Member]	Jun. 30, 2012 Hanley Group Acquisition [Member]	Jun. 30, 2012 RMI-RMC Acquistion [Member]
Business Acquisition, Contingent Consideration [Line Items]
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	$ 1,800,000	$ 4,500,000	$ 36,000	$ 100,000	$ 300,000	$ 1,700,000	$ 100,000	$ (11,000)
Business Acquisition, Cost of Acquired Entity, Purchase Price									6,500,000	53,300,000	15,200,000
Business Acquisition, Contingent Consideration, at Fair Value			2,500,000	2,500,000	15,200,000	15,200,000	3,000,000	3,000,000
Contingent payments equal to a % of the forecasted adjusted earnings before interest and taxes						15.00%
Business Combination, Separately Recognized Transactions, Additional Disclosures, Acquisition Cost Expensed	$ 400,000