Equity - Additional Information (Details)	12 Months Ended
	Dec. 31, 2021 USD ($) property $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares	Dec. 31, 2019 USD ($) $ / shares shares	Dec. 31, 2018 shares	Jul. 31, 2015 shares
Equity [Line Items]
Proceeds from issuance of common shares | $	$ 60,575,000	$ 222,390,000	$ 197,643,000
Shares issued, net of forfeitures (in shares)	949,573	756,380	896,807
Number of shares authorized to be repurchased (in shares)					10,000,000
Remaining authorized repurchase amount (in shares)	8,976,315
Preferred shares outstanding (in shares)	1,935,400	1,935,400
Preferred shares, liquidation preference | $	$ 96,770,000	$ 96,770,000
OP unit equivalent in common shares (in unit per share)	1.13
Redemption of units (in shares)	1,598,906
Shares issued for units redeemed (in shares)	185,270	327,453	391,993
Partners' capital account, exchanges and conversions | $	$ 958,000	$ 1,614,000	$ 1,655,000
OP units outstanding (in units)	775,000
Disposal Group, Disposed of by Sale, not Discontinued Operations | Properties Disposed By LCIF
Equity [Line Items]
Number of properties sold | property	3
LCIF
Equity [Line Items]
Redemption of units (in shares)	1,598,906
LCIF | Disposal Group, Disposed of by Sale, not Discontinued Operations | Properties Disposed By LCIF
Equity [Line Items]
Number of properties sold | property	3
Forward Contracts
Equity [Line Items]
Sale of stock, number of shares issued (in shares)	4,990,717
Sale of stock, net proceeds | $	$ 53,567,000
Common stock, aggregated number of shares to be settled on forward basis (in shares)	3,649,023
Common stock, shares to be settled on forward basis, aggregate value | $	$ 38,544,000
Common Stock
Equity [Line Items]
Number of shares authorized to be repurchased (in shares)				10,000,000
Repurchase of common shares (in shares)	0	1,329,940	441,581
Average cost per share (in dollars per share) | $ / shares		$ 8.28	$ 8.13
Series C
Equity [Line Items]
Preferred shares outstanding (in shares)	1,935,400
Dividend rate (usd per share) | $ / shares	$ 3.25
Preferred shares, liquidation preference | $	$ 96,770,000
Convertible preferred stock, conversion ratio	2.4339
Preferred stock conversion, threshold conversion price percentage (at least)	125.00%
At The Market
Equity [Line Items]
Sale of stock, number of shares issued (in shares)	1,052,800	5,950,882
Sale of stock, net proceeds | $	$ 13,532,000	$ 60,977,000
Sale of stock, authorized amount | $	350,000,000
Sale of stock, amount available for issuance | $	$ 294,985,000
Underwritten Offering
Equity [Line Items]
Sale of stock, number of shares issued (in shares)	16,000,000	17,250,000
Sale of stock (in dollars per share) | $ / shares	$ 12.11	$ 9.60
Proceeds from issuance of common shares | $		$ 164,000,000
Underwritten Offering | Forward Contracts
Equity [Line Items]
Common stock, shares to be settled on forward basis, aggregate value | $	$ 187,528,000