Quarterly report pursuant to Section 13 or 15(d)

Revenue - Summary of Accounts And Notes Receivable And Contract Assets and Liabilities (Details)

v3.19.3
Revenue - Summary of Accounts And Notes Receivable And Contract Assets and Liabilities (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Mar. 31, 2019
Sep. 30, 2019
Sep. 30, 2019
Dec. 31, 2018
Revenue from Contract with Customer [Abstract]        
Contract Liabilities - current     $ 1,942 $ 4,081
Contract Liabilities - noncurrent     895 2,441
Total contract liabilities $ 6,522 $ 3,072 $ 2,837 $ 6,522
Change in Contract with Customer, Liability [Roll Forward]        
Contract Liabilities, beginning balance 6,522 3,072    
Decrease due to recognition of revenue (1,451)      
Increase to deferred revenue during current period 1,635      
Elimination of deferred revenue due to the adoption of fresh start accounting (3,634)      
Contract Liabilities, ending balance $ 3,072 2,837    
Decrease due to recognition of revenue   (1,250)    
Increase to deferred revenue during current period   $ 1,015