CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Issuance of shares of common stock upon exercise of stock options (in shares)			17,000
Purchase of shares of common stock	139,784	161,500	45,807
Dividends declared on common stock (dollars per per share)	$ 0.68	$ 0.68	$ 0.68
Redeemable Preferred Units
Issuance of redeemable units (in shares)	48,334
Redeemable Common Units
Issuance of redeemable units (in shares)	23,199