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Detail Of Selected Balance Sheet Accounts (Activity In Allowance For Doubtful Accounts) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012
Detail Of Selected Balance Sheet Accounts [Abstract]
Balance at beginning of period	$ 1,050	$ 588	$ 1,399	$ 391
Increase (decrease) to bad debt expense	(87)	451	(380)	636
Deductions for uncollectible accounts written off, net of recoveries	(28)		(85)
Increase (decrease) due to foreign currency translation	(23)	4	(22)	16
Balance at end of period	$ 912	$ 1,043	$ 912	$ 1,043

Amount of the current period expense charged against operations, the offset which is generally to the allowance for doubtful accounts for the purpose of reducing receivables, including notes receivable, to an amount that approximates their net realizable value (the amount expected to be collected).

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