v3.21.1
REVENUE FROM CONTRACTS WITH CUSTOMERS Table 1 - Contract Assets and Liabilities (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Contract assets        
Current portion $ 733 $ 1,812 $ 2,694 $ 2,140
Noncurrent portion 870 1,399 932 1,003
Total 1,603 3,211 3,626 3,143
Additions 92 1,357    
Transfer to accounts receivable (1,990) (1,289)    
Transfer to revenues, contract assets (125) 0    
Total activity (2,023) 68    
Contract liabilities        
Current portion (16,524) (20,421) (22,019) (21,083)
Noncurrent portion (46,813) (42,069) (47,537) (40,289)
Total (63,337) (62,490) $ (69,556) $ (61,372)
Additions (9,658) (11,883)    
Transfer to revenues, contract liabilities 15,877 10,765    
Total activity $ 6,219 $ (1,118)