Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 148	$ 1,310
Other comprehensive income (loss):
Unrealized holding gains on available-for-sale securities, net of tax	(5)	4
Foreign currency translation adjustments	1,041	(538)
Other comprehensive income (loss)	1,036	(534)
Comprehensive income	$ 1,184	$ 776

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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