Fair Value Measurements - Narrative (Details) - Level 2 - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Junior subordinated notes | Market Approach Valuation Technique
Financial Instruments Not Measured at Fair Value
Market interest rate percentage	4.30%	4.21%
Junior subordinated notes | Carrying value
Financial Instruments Not Measured at Fair Value
Estimated fair value (lower) higher than carrying value	$ 8,150	$ 8,296
Mortgages payable | Market Approach Valuation Technique | Minimum
Financial Instruments Not Measured at Fair Value
Market interest rate percentage	3.92%	3.12%
Mortgages payable | Market Approach Valuation Technique | Maximum
Financial Instruments Not Measured at Fair Value
Market interest rate percentage	4.67%	3.87%
Mortgages payable | Carrying value
Financial Instruments Not Measured at Fair Value
Estimated fair value (lower) higher than carrying value	$ 36,739	$ 511