Issuances of Common Stock - Dividend Reinvestment and Stock Purchase Plan (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Dividend Reinvestment and Stock Purchase Plan
Gross proceeds	$ 2,799	$ 2,654
DRSPP
Dividend Reinvestment and Stock Purchase Plan
Dividend Reinvestment and Stock Purchase Plan, authorized shares (in shares)	26,000,000
Shares remaining for future issuance (in shares)	11,294,008
Common stock | DRSPP
Dividend Reinvestment and Stock Purchase Plan
Shares of common stock issued (in shares)	41,371	43,394
Gross proceeds	$ 2,800	$ 2,700
Common stock | DRSPP waiver approval process
Dividend Reinvestment and Stock Purchase Plan
Shares of common stock issued (in shares)	0	0