Equity - Additional Information (Details)								12 Months Ended
	Oct. 01, 2021 USD ($) shares	Jan. 04, 2021 shares	Aug. 20, 2020 USD ($) $ / shares shares	Mar. 10, 2020 USD ($)	Aug. 06, 2019 USD ($)	Aug. 05, 2019 USD ($)	Jun. 18, 2019 USD ($) ft² $ / shares shares	Dec. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares	Dec. 31, 2019 USD ($) $ / shares shares
Class of Stock [Line Items]
Authorized capital shares of common stock (in shares)								500,000,000	500,000,000
Preferred stock, shares authorized (in shares)								100,000,000	100,000,000
Common stock, shares issued (in shares)								63,011,700	59,073,220
Common stock, shares outstanding (in shares)								63,011,700	59,073,220
Percent of total voting power for voting stock								0.50
Percentage of operating partnerships held								75.30%	73.90%
Operating partnership units redemption ratio								1
Dividend declared (in dollars per share) | $ / shares								$ 0.64	$ 0.44	$ 0.84
Aggregate cash dividends and distributions, paid | $								$ 58,713,000	$ 47,603,000	$ 61,504,000
Preferred stock, $0.01 par value, 100,000,000 shares authorized: 6.75% Series A Cumulative Redeemable Perpetual Preferred Stock, 9,980,000 shares authorized, 6,843,418 shares issued and outstanding as of December 31, 2021 and 2020 | $								171,085,000	171,085,000
Noncontrolling interests in investment entities | $								$ 629,000	488,000
Class A units
Class of Stock [Line Items]
Units not held by company (in shares)								20,633,485
Class A units | Operating Partnership
Class of Stock [Line Items]
Aggregate cash dividends and distributions, paid | $								$ 13,300,000	9,200,000	16,900,000
Common stock
Class of Stock [Line Items]
Aggregate cash dividends and distributions, paid | $								$ 39,300,000	$ 25,300,000	45,400,000
2018 ATM Program | Common stock
Class of Stock [Line Items]
Maximum aggregate offering price of shares to be sold (up to) | $					$ 180,700,000	$ 125,000,000
The Amendments, At-the-Market Continuous Equity Program [Member] | Common stock
Class of Stock [Line Items]
Stock issued during period (in shares)								3,801,731	1,783,768
Sale of stock, weighted average price per share | $ / shares								$ 13.87	$ 10.48
The Amendments, At-the-Market Continuous Equity Program [Member] | Preferred stock
Class of Stock [Line Items]
Net proceeds after offering costs and commissions from sale of shares | $								$ 51,700,000	$ 18,400,000
Prior At-The-Market Program [Member]
Class of Stock [Line Items]
Net proceeds after offering costs and commissions from sale of shares | $									$ 1,700,000	$ 97,000,000
Prior At-The-Market Program [Member] | Common stock
Class of Stock [Line Items]
Stock issued during period (in shares)									92,577	5,871,519
Issuance of common stock, price per share (in dollars per share) | $ / shares									$ 18.23	$ 16.76
Thames Street Wharf
Class of Stock [Line Items]
Area of retail space | ft²							263,426
Redeemable convertible preferred stock
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares)								9,980,000	9,980,000
Preferred stock, shares issued (in shares)							2,530,000	6,843,418	6,843,418
Preferred stock, shares outstanding (in shares)								6,843,418	6,843,418
Dividend rate								6.75%	6.75%
Liquidation preference (in dollars per share) | $ / shares							$ 25.00
Proceeds from issuance of preferred stock and preference stock | $							$ 61,300,000
Preferred stock, redemption price (in dollars per share) | $ / shares								$ 25.00
Maximum conversion price (in dollars per share) | $ / shares								$ 2.97796
Redeemable convertible preferred stock | Over-Allotment Option
Class of Stock [Line Items]
Preferred stock, shares issued (in shares)							330,000
Redeemable convertible preferred stock | At The Market Program [Member]
Class of Stock [Line Items]
Maximum aggregate offering price of shares to be sold (up to) | $				$ 300,000,000
Dividend rate				6.75%
Redeemable Preferred Stock
Class of Stock [Line Items]
Preferred stock, shares issued (in shares)			3,600,000				2,530,000
Dividend rate							6.75%
Series A Cumulative Redeemable Preferred Stock
Class of Stock [Line Items]
Preferred stock, shares issued (in shares)								6,800,000	6,800,000
Preferred stock, shares outstanding (in shares)								6,800,000	6,800,000
Dividends declared (in dollars per share) | $ / shares								$ 1.687500	$ 1.687500	$ 0.970315
Dividends, Preferred Stock, Stock | $								$ 11,500,000	$ 7,300,000	$ 2,500,000
Series A Cumulative Redeemable Preferred Stock | The Amendments, At-the-Market Continuous Equity Program [Member]
Class of Stock [Line Items]
Stock issued during period (in shares)									713,418
Net proceeds after offering costs and commissions from sale of shares | $									$ 16,100,000
Sale of stock, weighted average price per share | $ / shares									$ 22.88
Series A Cumulative Redeemable Preferred Stock | Public Stock Offering [Member]
Class of Stock [Line Items]
Issuance of common stock, price per share (in dollars per share) | $ / shares			$ 24.75
Net proceeds after offering costs and commissions from sale of shares | $			$ 86,100,000
Number of shares issued in public offering			3,600,000
Common Class A | Stock Issuance - Shares From Existing Shareholder
Class of Stock [Line Items]
Redemption of operating partnership units (in shares)	220,000	12,000
Payment to settle obligation | $	$ 2,900,000
Consolidated Entities Under Development Or Construction | Operating Partnership
Class of Stock [Line Items]
Nonredeemable noncontrolling interest | $									$ 500,000