Quarterly report pursuant to Section 13 or 15(d)

Settlement Agreement (Detail)

v3.19.1
Settlement Agreement (Detail)
$ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
Jan. 31, 2019
USD ($)
Mar. 31, 2019
USD ($)
Mar. 31, 2018
USD ($)
Mar. 31, 2019
USD ($)
Mar. 31, 2018
USD ($)
Sep. 30, 2018
USD ($)
Apr. 19, 2018
USD ($)
installment
Loss Contingencies [Line Items]              
Settlement income   $ 0 $ 14,803 $ 0 $ 14,803    
Other current assets   17,124   17,124   $ 14,137  
Other assets   6,151   6,151   $ 10,270  
Settlement Agreement              
Loss Contingencies [Line Items]              
Aggregate net payments to be received             $ 15,700
Number of equal installments payable | installment             4
Settlement income         $ 14,800    
Installment payments received $ 3,900            
Other current assets   7,900   7,900      
Other assets   $ 3,600   $ 3,600