XML 76 R65.htm IDEA: XBRL DOCUMENT v3.21.2
Revenue from Contract with Customers - Contract Liabilities (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Revenue from Contract with Customer [Abstract]      
Contract liability with customer $ 3,600   $ 4,600
Deferred revenue recognized in earnings 5,048 $ 12,762  
Deferred revenue $ 4,068 $ 8,253