XML 48 R41.htm IDEA: XBRL DOCUMENT v3.20.1
Revenues (Customer Liability) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Revenue from Contract with Customer [Abstract]      
Contract liability $ 14,550   $ 14,276
Revenue recognized $ 3,000 $ 2,300