Commitments and Contingencies (Narrative) (Details)
$ in Millions
|9 Months Ended|
Sep. 30, 2021
|Commitments and Contingencies Disclosure [Abstract]|
|Annual lease payments||$ 1.0|
Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.
Reference 1: http://www.xbrl.org/2003/role/disclosureRef