Other Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Other Liabilities
Interest rate swap liability	$ 6,682	$ 2,716
Excess joint venture distributions and other	2,511	2,938
Total	18,491	15,455
Pension plan
Other Liabilities
Pension and supplemental executive retirement plan liability	1,447	1,790
SERP
Other Liabilities
Pension and supplemental executive retirement plan liability	$ 7,851	$ 8,011