Detail of Selected Balance Sheet Accounts (Activity in Allowance for Doubtful Accounts) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Balance Sheet Related Disclosures [Abstract]
Balance at beginning of period	$ 1,577	$ 572
Bad debt expense (recovery)	(29)	1,074	$ (544)
Uncollectible accounts written off, net of recoveries	(749)	(58)
Change in foreign currency translation	(53)	(11)
Balance at end of period	$ 746	$ 1,577	$ 572