Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands		3 Months Ended
		Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income (loss)		$ 6,450	$ (339)
Other comprehensive loss, net of tax:
Foreign currency translation adjustment		(1,867)	(2,373)
Change in net unrealized loss on investments		(63)	(29)
Less income tax benefit		23	11
Reclassification of realized loss on investments included in net income	[1]	(7)	0
Less income tax benefit	[2]	3	0
Other comprehensive loss, net of tax		(1,911)	(2,391)
Comprehensive income (loss)		$ 4,539	$ (2,730)

[1] Recorded in Other income, net on our Condensed Consolidated Statements of Operations.

[2] Recorded in Income tax provision (benefit) in our Condensed Consolidated Statements of Operations.