Fair Value Measurements and Interest Rate Derivatives - Fair Value Measurements (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Liabilities:
Interest rate derivative liabilities	$ 4,841	$ 5,710
Level 2
Assets:
Total assets		14,125
Liabilities:
Total liabilities	4,841	5,710
Level 2 | Interest Rate Swap
Liabilities:
Interest rate derivative liabilities	4,841	5,710
Level 2 | Renaissance Westchester
Assets:
Asset measured at fair value		14,125
Total at the end of the period
Assets:
Total assets		14,125
Liabilities:
Total liabilities	4,841	5,710
Total at the end of the period | Interest Rate Swap
Liabilities:
Interest rate derivative liabilities	$ 4,841	5,710
Total at the end of the period | Renaissance Westchester
Assets:
Asset measured at fair value		$ 14,125