Equity - Additional Information (Details) - USD ($)					1 Months Ended		3 Months Ended			6 Months Ended		10 Months Ended
	Jan. 14, 2020	Jul. 22, 2019	Jul. 21, 2019	Mar. 18, 2019	Jun. 30, 2020	Aug. 31, 2019	Jun. 30, 2020	Mar. 31, 2020	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019	May 31, 2020
Class of Stock [Line Items]
Proceeds from shares sold										$ 215,275,000	$ 235,704,000
Secondary Offering | Operating Partnership
Class of Stock [Line Items]
Operating partnership units converted (in shares)		18,502,705	18,502,705
2020 ATM Program
Class of Stock [Line Items]
Authorized equity distribution program					$ 250,000,000
Proceeds from shares sold, gross					17,300,000
Aggregate gross sales price of stock that can be issued					$ 232,700,000		$ 232,700,000			$ 232,700,000
2019 ATM Program
Class of Stock [Line Items]
Number of shares sold (in shares)												184,400,000
Authorized equity distribution program						$ 200,000,000
ATM Program
Class of Stock [Line Items]
Number of shares sold (in shares)							1,027,857			1,281,555
Proceeds from shares sold							$ 16,600,000			$ 22,700,000
Proceeds from shares sold, gross							$ 17,300,000			$ 23,600,000
Weighted average price of shares sold (in USD per share)							$ 16.86			$ 18.42
Common Stock
Class of Stock [Line Items]
Number of shares sold (in shares)							1,074,173	8,188,698	14,030,000
Common Stock | Follow-On Offering
Class of Stock [Line Items]
Number of shares sold (in shares)	7,935,000			14,030,000
Number of shares sold pursuant to underwriter's option (in shares)	1,035,000			1,830,000
Price of shares sold (in USD per share)	$ 25.20			$ 17.50
Proceeds from shares sold	$ 191,500,000			$ 234,600,000
Common Stock | Secondary Offering
Class of Stock [Line Items]
Number of shares sold (in shares)		26,288,316
Number of shares sold pursuant to underwriter's option to purchase additional shares (in shares)		3,428,910