Equity - Common Stock (Details) - Common Stock - USD ($)	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Equity
Number of shares repurchased	87,249	76,067
Equity Distribution Agreements
Equity
Maximum offering capacity under shelf registration statement	$ 200,000,000
Shares common stock sold	0
Amount available under effective shelf registration statement	$ 200,000,000