XML 56 R42.htm IDEA: XBRL DOCUMENT v3.20.2
Property and Equipment - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Property, Plant and Equipment [Abstract]        
Depreciation expense $ 0.6 $ 0.5 $ 1.0 $ 0.9