Accounts Receivable (Allowance for Doubtful Accounts) (Details) (USD $)	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Allowance for Doubtful Accounts Receivable [Roll Forward]
Balance at beginning of period	$ 3,279,000	$ 3,332,000	$ 8,399,000
Provision adjustment - expense, net of recoveries	119,000	(53,000)	30,000
Reclass of amount to a long-term receivables account	0	0	(5,253,000)
Impact from foreign exchange translation adjustment	0	0	181,000
Write-offs and other adjustments - additions (deductions) to receivable balances	(35,000)	0	(25,000)
Balance at end of period	3,363,000	3,279,000	3,332,000
Write-offs - deductions against receivables			$ 2,900,000