Quarterly report pursuant to Section 13 or 15(d)

Customer and Supplier Concentrations - Summary of Customer and Supplier Concentration of Accounts Receivable (Details)

v3.19.3
Customer and Supplier Concentrations - Summary of Customer and Supplier Concentration of Accounts Receivable (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Jun. 30, 2019
Concentration Risk [Line Items]      
Receivables, net [1] $ 23,643   $ 26,895
Customer concentrations      
Concentration Risk [Line Items]      
Receivables, net $ 23,643   $ 26,895
Accounts receivable concentration risk, as a percentage 100.00% 100.00% 100.00%
Customer concentrations | Accounts Receivable      
Concentration Risk [Line Items]      
Receivables, net $ 8,359   $ 6,506
Accounts receivable concentration risk, as a percentage 35.40%   24.20%
Customer concentrations | Customer A | Accounts Receivable      
Concentration Risk [Line Items]      
Receivables, net $ 3,714   $ 6,506
Accounts receivable concentration risk, as a percentage 15.70%   24.20%
Customer concentrations | Customer B | Accounts Receivable      
Concentration Risk [Line Items]      
Receivables, net $ 4,645   $ 0
Accounts receivable concentration risk, as a percentage 19.70%   0.00%
[1] Includes amounts of the consolidated variable interest entity, which is presented separately in the table below.