Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Restricted cash and cash equivalent	$ 1,930	$ 2,377
Deferred costs accumulated amortization	117,878	113,959
Accumulated amortization of acquired lease intangible assets	312,186	284,880
Accumulated accretion of acquired lease intangible liabilities	$ 172,293	$ 145,966
Common stock, par value per share	$ 0.01	$ 0.01
Common stock, shares authorized	220,000,000	220,000,000
Common stock, shares issued	171,213,008	169,680,138
Treasury stock, shares held at cost	427,901	459,828
Exchangeable operating partnership units aggregate redemption value	$ 56,844	$ 34,878
General partner units, outstanding	171,213,000	169,680,000
Limited partner units, outstanding	760,000	765,000
Partnership Interest [Member]
Restricted cash and cash equivalent	$ 1,930	$ 2,377
Deferred costs accumulated amortization	117,878	113,959
Accumulated amortization of acquired lease intangible assets	312,186	284,880
Accumulated accretion of acquired lease intangible liabilities	$ 172,293	$ 145,966
General partner units, outstanding	171,213,008	169,680,138
Limited partner units, outstanding	760,046	765,046