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Earnings (Loss) per Share and Equity Transactions - Narrative (Details) - $ / shares		3 Months Ended			9 Months Ended
	May 01, 2019	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2020
Class of Stock [Line Items]
Stock repurchase program, discount (percent)	25.00%
NAV (in dollars per share)	$ 3.14
Distribution reinvestment plan (in dollars per share)	25.00%
Common Stock
Class of Stock [Line Items]
Repurchase of common stock (in shares)			2,136,119		2,136,119
Issuance of common stock under dividend reinvestment plan (in shares)		57,791		21,249	79,040

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Net asset value per share or per unit of investments in certain entities that calculate net asset value per share. Includes, but is not limited to, by unit, membership interest, or other ownership interest. Investment includes, but is not limited to, investment in certain hedge funds, venture capital funds, private equity funds, real estate partnerships or funds. Excludes fair value disclosure.

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Number of shares issued during the period from a dividend reinvestment plan (DRIP). A dividend reinvestment plan allows the shareholders to reinvest dividends paid to them by the entity on new issues of stock by the entity.

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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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