XML 84 R46.htm IDEA: XBRL DOCUMENT v3.21.2
Revenue Recognition - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Dec. 31, 2020
Sep. 30, 2021
Sep. 30, 2021
Revenue from Contract with Customer [Abstract]      
Revenue recognized $ 600 $ 200 $ 1,088