XML 50 R40.htm IDEA: XBRL DOCUMENT v3.20.2
Revenues (Customer Liability) (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Revenue from Contract with Customer [Abstract]      
Contract liability $ 13,251   $ 14,276
Revenue recognized $ 5,500 $ 4,000