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Earnings Per Share and Equity Transactions - Narrative (Details)			12 Months Ended
	Aug. 05, 2021 shares	Dec. 01, 2020 $ / shares	Dec. 31, 2021 shares	Dec. 31, 2020 $ / shares shares	Dec. 31, 2019 shares	Aug. 04, 2021 shares
Tender Offer Event [Line Items]
Reverse stock split ratio	0.1
Common stock, number of shares outstanding (in shares)	71,261,403		67,344,374	71,998,654		712,090,283
Additional shares issued (in shares)	52,375
Common Stock
Tender Offer Event [Line Items]
Purchase price (usd per share) | $ / shares		$ 21.70		$ 2.355
Stock repurchase program, discount percentage		25.00%
Net asset value (usd per share) | $ / shares		$ 28.90
Repurchase of common stock (in shares)			755,643	213,612	851,760
Issuance of common stock under dividend reinvestment plan (in shares)				7,904

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