Detail of Selected Balance Sheet Accounts (Activity in Allowance for Doubtful Accounts) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Balance Sheet Related Disclosures [Abstract]
Balance at beginning of period	$ 572	$ 1,297
Bad debt expense/(recovery)	1,074	(544)	842
Uncollectible accounts written off, net of recoveries	(58)	(171)
Change in foreign currency translation	(11)	(10)
Balance at end of period	$ 1,577	$ 572	$ 1,297