Stockholders' Equity - Additional Information (Details)													3 Months Ended		6 Months Ended		119 Months Ended		257 Months Ended
		Aug. 13, 2024 USD ($) $ / shares	Jul. 22, 2024 USD ($) shares	Aug. 02, 2022 USD ($) $ / shares shares	Feb. 03, 2022 USD ($)	Feb. 06, 2019 USD ($)	Nov. 30, 2018	Oct. 30, 2018 USD ($) shares	Sep. 14, 2016 USD ($)	Dec. 14, 2015 USD ($)	Aug. 05, 2015 USD ($)	Apr. 08, 2004 $ / shares shares	Jun. 30, 2025 $ / shares shares	Jun. 30, 2024 $ / shares shares	Jun. 30, 2025 USD ($) $ / shares shares	Jun. 30, 2024 $ / shares shares	Jun. 30, 2025 USD ($) $ / shares shares	Jun. 30, 2025 USD ($) $ / shares shares	Jun. 30, 2025 USD ($) $ / shares shares	Mar. 31, 2025 shares	Dec. 31, 2024 $ / shares shares	Mar. 31, 2024 shares	Dec. 31, 2023 $ / shares shares	Jul. 22, 2019 $ / shares shares	Jul. 21, 2019 $ / shares shares
Class Of Stock [Line Items]
Equity offerings of common stock | $				$ 30,000,000															$ 2,240,067,000
Shares repurchased													0	0	476,656	0	16,069,776
Weighted-average price per share | $ / shares															$ 12.75		$ 15.82
Cost of Shares Repurchased | $					$ 4,186,000	$ 50,000,000		$ 50,000,000	$ 50,000,000	$ 50,000,000	$ 50,000,000							$ 254,186,000
Cost of Shares Repurchased | $															$ 6,079,000		$ 254,186,000
Discount rate of average net asset value per share															14.72%
Reverse stock split, conversion ratio								0.33
Reverse stock split, description							The Company’s Board approved a one-for-three reverse stock split of the Company’s common stock on October 30, 2018, which was effective as of close of business as of November 30, 2018 (the “Reverse Stock Split”).
Number of shares, reverse stock splits												20,700,000
Common stock, shares authorized													130,000,000		130,000,000		130,000,000	130,000,000	130,000,000		130,000,000			130,000,000	400,000,000
Common stock, par value | $ / shares				$ 0.001									$ 0.001		$ 0.001		$ 0.001	$ 0.001	$ 0.001		$ 0.001			$ 0.001	$ 0.001
Common stock, shares issued				1,932,641									93,303,622	65,253,275	93,303,622	65,253,275	93,303,622	93,303,622	93,303,622	93,303,622	93,780,278	65,253,275	65,253,275
Share purchase price par value | $ / shares				$ 15.52								$ 15
Shares issued during the period												62,000,000
Lock up period				2 years
Offering cost | $				$ 300,000
Shares repurchased during the period													0	0	476,656	0
Net asset value per share | $ / shares	[1]												$ 14.75	$ 15.38	$ 14.75	$ 15.38	$ 14.75	$ 14.75	$ 14.75		$ 14.98		$ 15.41
ATM Offering
Class Of Stock [Line Items]
Common stock, par value | $ / shares		$ 0.001
Aggregate maximum offering price through equity financing | $		$ 200,000,000
Shares issued during the period															0
AFT and AIF First Merger
Class Of Stock [Line Items]
Equity offerings of common stock | $			$ 440,140,000
Common stock, shares issued			28,527,003
Maximum | ATM Offering
Class Of Stock [Line Items]
Percentage of sales agent receive commission		1.50%
Common Stock
Class Of Stock [Line Items]
Reverse stock split, conversion ratio								0.33
Reverse stock split, description								On October 30, 2018, the Board approved a one-for-three reverse stock split of the Company’s common stock which was effective as of the close of business on November 30, 2018 (the "Reverse Stock Split").
Fractional Shares
Class Of Stock [Line Items]
Shares repurchased																	16,069,806
Weighted-average price per share | $ / shares																	$ 15.82
Cost of Shares Repurchased inclusive commissions | $																	$ 254,186,000
Number of shares, reverse stock splits								29

[1] * Totals may not foot due to rounding.