Quarterly report pursuant to Section 13 or 15(d)

Customer and Supplier Concentrations (Details)

v3.10.0.1
Customer and Supplier Concentrations (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Jun. 30, 2018
Concentration Risk [Line Items]          
Revenues $ 1,100,912 $ 1,680,738 $ 2,666,002 $ 3,844,528  
Receivables, net [1] 23,275   23,275   $ 35,856
Customer concentrations          
Concentration Risk [Line Items]          
Revenues 1,100,912 $ 1,680,738 2,666,002 $ 3,844,528  
Receivables, net $ 23,275   $ 23,275   35,856
Concentration risk, percentage 100.00% 100.00% 100.00% 100.00%  
Revenue | Customer concentrations          
Concentration Risk [Line Items]          
Revenues $ 348,897 $ 790,270 $ 979,925 $ 1,838,647  
Concentration risk, percentage 31.70% 47.00% 36.80% 47.80%  
Accounts Receivable | Customer concentrations          
Concentration Risk [Line Items]          
Receivables, net $ 8,737   $ 8,737   22,435
Concentration risk, percentage     37.50% 62.50%  
HSBC Bank USA | Revenue | Customer concentrations          
Concentration Risk [Line Items]          
Revenues $ 244,871 $ 407,509 $ 624,993 $ 918,773  
Concentration risk, percentage 22.20% 24.20% 23.40% 23.90%  
Mitsubishi Intl. Corp. | Revenue | Customer concentrations          
Concentration Risk [Line Items]          
Revenues $ 104,026 $ 382,761 $ 354,932 $ 919,874  
Concentration risk, percentage 9.50% 22.80% 13.40% 23.90%  
Customer A | Accounts Receivable | Customer concentrations          
Concentration Risk [Line Items]          
Receivables, net $ 3,558   $ 3,558   14,967
Concentration risk, percentage     15.20% 41.70%  
Customer B | Accounts Receivable | Customer concentrations          
Concentration Risk [Line Items]          
Receivables, net $ 5,179   $ 5,179   $ 7,468
Concentration risk, percentage     22.30% 20.80%  
[1] Includes amounts of the consolidated variable interest entity, which is presented separately in the table below.