Revenue and Vendor Concentrations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Sep. 30, 2018
Revenue, Major Customer [Line Items]
Accounts receivable, net	$ 14,566		$ 14,566		$ 16,821
Customer Concentration Risk | Sales Revenue Net
Revenue, Major Customer [Line Items]
Revenue	6,100	$ 7,900
Customer Concentration Risk | Accounts Receivable
Revenue, Major Customer [Line Items]
Accounts receivable, net	$ 5,500	$ 4,500	5,500	$ 4,500
Customer Concentration Risk | Customer One | Sales Revenue Net
Revenue, Major Customer [Line Items]
Revenue			$ 10,500	$ 10,100
Total revenue, percentage	16.00%	26.00%	18.00%	24.00%
Customer Concentration Risk | Customer Two | Sales Revenue Net
Revenue, Major Customer [Line Items]
Total revenue, percentage	11.00%	13.00%
Customer Concentration Risk | Customer Three | Sales Revenue Net
Revenue, Major Customer [Line Items]
Total revenue, percentage		10.00%
Geographic Concentration Risk | Sales Revenue Net
Revenue, Major Customer [Line Items]
Total revenue, percentage	28.00%	24.00%	33.00%	25.00%