CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Net income	$ 3,752	$ 16,991	$ 38,744	$ 55,873
Other comprehensive income (loss):
Change in unrealized losses on available-for-sale securities (net of tax)	(3)	(13)	(3)	(30)
Foreign currency translation adjustments	550	(676)	(489)	(520)
Other comprehensive income (loss)	547	(689)	(492)	(550)
Total comprehensive income	$ 4,299	$ 16,302	$ 38,252	$ 55,323