Restricted Cash (Schedule Of Restricted Cash) (Details) - USD ($) $ in Thousands |
Sep. 30, 2021 |
Dec. 31, 2020 |
Sep. 30, 2020 |
Dec. 31, 2019 |
|---|---|---|---|---|
| Restricted Cash [Abstract] | ||||
| Security deposits | $ 6,863 | $ 5,289 | ||
| Escrow and other reserve funds | 12,946 | 8,918 | ||
| Total restricted cash | $ 19,809 | $ 14,207 | $ 14,507 | $ 15,577 |