Revenue Concentration (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Sep. 30, 2019
Revenue, Major Customer [Line Items]
Revenue	$ 25,413	$ 21,906	$ 70,672	$ 59,572
Accounts receivable, net	$ 12,943		12,943		$ 14,938
Customer Concentration Risk | Sales Revenue Net
Revenue, Major Customer [Line Items]
Total revenue, percentage	640000000.00%	610000000.00%
Customer Concentration Risk | Accounts Receivable
Revenue, Major Customer [Line Items]
Accounts receivable, net	$ 4,200	$ 5,500	4,200	5,500
Customer Concentration Risk | Customer One | Sales Revenue Net
Revenue, Major Customer [Line Items]
Revenue			$ 10,800	$ 10,500
Total revenue, percentage	15.00%	16.00%	15.00%	18.00%
Customer Concentration Risk | Customer Two | Sales Revenue Net
Revenue, Major Customer [Line Items]
Total revenue, percentage	11.00%	11.00%
Geographic Concentration Risk | Sales Revenue Net | International
Revenue, Major Customer [Line Items]
Total revenue, percentage	25.00%	28.00%	25.00%	33.00%
Geographic Concentration Risk | Long-term Assets | International
Revenue, Major Customer [Line Items]
Total revenue, percentage			63.00%		68.00%
Geographic Concentration Risk | Long-term Assets, Excluding Goodwill and Other Intangibles | International
Revenue, Major Customer [Line Items]
Total revenue, percentage			14.00%		12.00%