Condensed Consolidated Statements of Comprehensive Income ((Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 208	$ 4,682
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	2,660	(1,569)
Change in net unrealized gain on investments	0	5
Less income tax expense	0	(2)
Other comprehensive income (loss), net of tax	2,660	(1,566)
Comprehensive income	$ 2,868	$ 3,116