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, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Balance Sheet Related Disclosures [Abstract]
Balance at beginning of period	$ 1,844	$ 673	$ 1,577	$ 572
Bad debt expense/(recovery)	186	(170)	469	(60)
Uncollectible accounts written off, net of recoveries	(120)		(122)	(9)
Change in foreign currency translation	(29)	(2)	(43)	(2)
Balance at end of period	$ 1,881	$ 501	$ 1,881	$ 501