Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Net income	$ 20,430	$ 7,118
Other comprehensive income (loss):
Foreign currency translation adjustment	(1,652)	(2,469)
Total other comprehensive loss	(1,652)	(2,469)
Comprehensive income	$ 18,778	$ 4,649