Detail of Selected Balance Sheet Accounts (Activity in Allowance for Doubtful Accounts) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Balance Sheet Related Disclosures [Abstract]
Balance at beginning of period	$ 976	$ 1,881	$ 746	$ 1,577
Bad debt expense (recovery)	(118)	(438)	221	31
Uncollectible accounts written off, net of recoveries	16	(145)	(98)	(267)
Change in foreign currency translation	(3)	14	2	(29)
Balance at end of period	$ 871	$ 1,312	$ 871	$ 1,312