Accounts Receivable (Other Disclosures) (Details) (USD $)	12 Months Ended
	Sep. 30, 2011	Sep. 30, 2013	Sep. 30, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, gross, using percentage of completion method		$ 9,200,000	$ 6,300,000
Billed contracts receivable, using percentage of completion method		4,600,000	1,900,000
Unbilled contracts receivable, using percentage of completion method		4,600,000	4,400,000
Accounts receivable, net		41,826,000	36,939,000
Write-offs - deductions against receivables	2,900,000
Suncore
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net		$ 6,500,000	$ 2,300,000