Other Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Other Liabilities
Interest rate swap liability	$ 4,148	$ 5,929
Excess joint venture distributions and other	3,142	3,067
Total	16,998	19,017
Pension plan
Other Liabilities
Pension and supplemental executive retirement plan liability	1,409	1,602
SERP
Other Liabilities
Pension and supplemental executive retirement plan liability	$ 8,299	$ 8,419