Net Assets - Summary of Common Stock Issued, Price Per Share and Proceeds Raised (Details)	9 Months Ended
	Sep. 30, 2022 USD ($) $ / shares shares
Class Of Stock [Line Items]
Common stock, shares issued | shares	41,380,614
Gross Proceeds | $	$ 617,386,489
October 8, 2015
Class Of Stock [Line Items]
Issuance Date	Oct. 08, 2015
Common stock, shares issued | shares	1,667
Price Per Share | $ / shares	$ 15.00
Gross Proceeds | $	$ 25,000
December 22, 2016
Class Of Stock [Line Items]
Issuance Date	Dec. 22, 2016
Common stock, shares issued | shares	333,333
Price Per Share | $ / shares	$ 15.00
Gross Proceeds | $	$ 5,000,000
April 19, 2017
Class Of Stock [Line Items]
Issuance Date	Apr. 19, 2017
Common stock, shares issued | shares	1,000,000
Price Per Share | $ / shares	$ 15.00
Gross Proceeds | $	$ 15,000,000
June 26, 2017
Class Of Stock [Line Items]
Issuance Date	Jun. 26, 2017
Common stock, shares issued | shares	1,666,667
Price Per Share | $ / shares	$ 15.00
Gross Proceeds | $	$ 25,000,000
September 12, 2017
Class Of Stock [Line Items]
Issuance Date	Sep. 12, 2017
Common stock, shares issued | shares	2,666,667
Price Per Share | $ / shares	$ 15.00
Gross Proceeds | $	$ 40,000,000
December 22, 2017
Class Of Stock [Line Items]
Issuance Date	Dec. 22, 2017
Common stock, shares issued | shares	3,000,000
Price Per Share | $ / shares	$ 15.00
Gross Proceeds | $	$ 45,000,000
May 31, 2018
Class Of Stock [Line Items]
Issuance Date	May 31, 2018
Common stock, shares issued | shares	70,563	[1]
Price Per Share | $ / shares	$ 14.82	[1]
Gross Proceeds | $	$ 1,045,570	[1]
August 31, 2018
Class Of Stock [Line Items]
Issuance Date	Aug. 31, 2018
Common stock, shares issued | shares	117,582	[1]
Price Per Share | $ / shares	$ 14.92	[1]
Gross Proceeds | $	$ 1,754,244	[1]
September 27, 2018
Class Of Stock [Line Items]
Issuance Date	Sep. 27, 2018
Common stock, shares issued | shares	1,997,337
Price Per Share | $ / shares	$ 15.02
Gross Proceeds | $	$ 30,000,000
November 15, 2018
Class Of Stock [Line Items]
Issuance Date	Nov. 15, 2018
Common stock, shares issued | shares	202,779	[1]
Price Per Share | $ / shares	$ 15.07	[1]
Gross Proceeds | $	$ 3,055,498	[1]
January 14, 2019
Class Of Stock [Line Items]
Issuance Date	Jan. 14, 2019
Common stock, shares issued | shares	4,344,964
Price Per Share | $ / shares	$ 15.19
Gross Proceeds | $	$ 66,000,000
March 26, 2019
Class Of Stock [Line Items]
Issuance Date	Mar. 26, 2019
Common stock, shares issued | shares	326,431	[1]
Price Per Share | $ / shares	$ 15.14	[1]
Gross Proceeds | $	$ 4,942,168	[1]
May 21, 2019
Class Of Stock [Line Items]
Issuance Date	May 21, 2019
Common stock, shares issued | shares	374,783	[1]
Price Per Share | $ / shares	$ 15.13	[1]
Gross Proceeds | $	$ 5,670,467	[1]
May 24, 2019
Class Of Stock [Line Items]
Issuance Date	May 24, 2019
Common stock, shares issued | shares	3,232,189
Price Per Share | $ / shares	$ 15.16
Gross Proceeds | $	$ 49,000,000
July 16, 2019
Class Of Stock [Line Items]
Issuance Date	Jul. 16, 2019
Common stock, shares issued | shares	464,986	[1]
Price Per Share | $ / shares	$ 15.13	[1]
Gross Proceeds | $	$ 7,035,236	[1]
August 26, 2019
Class Of Stock [Line Items]
Issuance Date	Aug. 26, 2019
Common stock, shares issued | shares	480,121	[1]
Price Per Share | $ / shares	$ 14.76	[1]
Gross Proceeds | $	$ 7,088,143	[1]
October 15, 2019
Class Of Stock [Line Items]
Issuance Date	Oct. 15, 2019
Common stock, shares issued | shares	1,666,667
Price Per Share | $ / shares	$ 15.00
Gross Proceeds | $	$ 25,000,000
November 12, 2019
Class Of Stock [Line Items]
Issuance Date	Nov. 12, 2019
Common stock, shares issued | shares	43,979	[1]
Price Per Share | $ / shares	$ 14.76	[1]
Gross Proceeds | $	$ 649,123	[1]
December 20, 2019
Class Of Stock [Line Items]
Issuance Date	Dec. 20, 2019
Common stock, shares issued | shares	3,333,333
Price Per Share | $ / shares	$ 15.00
Gross Proceeds | $	$ 50,000,000
December 23, 2019
Class Of Stock [Line Items]
Issuance Date	Dec. 23, 2019
Common stock, shares issued | shares	487,166	[1]
Price Per Share | $ / shares	$ 14.52	[1]
Gross Proceeds | $	$ 7,073,650	[1]
March 20, 2020
Class Of Stock [Line Items]
Issuance Date	Mar. 20, 2020
Common stock, shares issued | shares	575,132	[1]
Price Per Share | $ / shares	$ 14.58	[1]
Gross Proceeds | $	$ 8,385,423	[1]
March 31, 2020
Class Of Stock [Line Items]
Issuance Date	Mar. 31, 2020
Common stock, shares issued | shares	21,021
Price Per Share | $ / shares	$ 15.00
Gross Proceeds | $	$ 315,308
May 20, 2020
Class Of Stock [Line Items]
Issuance Date	May 20, 2020
Common stock, shares issued | shares	529,020	[1]
Price Per Share | $ / shares	$ 14.25	[1]
Gross Proceeds | $	$ 7,538,541	[1]
August 6, 2020
Class Of Stock [Line Items]
Issuance Date	Aug. 06, 2020
Common stock, shares issued | shares	550,639	[1]
Price Per Share | $ / shares	$ 14.41	[1]
Gross Proceeds | $	$ 7,934,712	[1]
October 15, 2020
Class Of Stock [Line Items]
Issuance Date	Oct. 15, 2020
Common stock, shares issued | shares	3,333,333
Price Per Share | $ / shares	$ 15.00
Gross Proceeds | $	$ 50,000,000
November 12, 2020
Class Of Stock [Line Items]
Issuance Date	Nov. 12, 2020
Common stock, shares issued | shares	593,692	[1]
Price Per Share | $ / shares	$ 14.46	[1]
Gross Proceeds | $	$ 8,584,772	[1]
March 19, 2021
Class Of Stock [Line Items]
Issuance Date	Mar. 19, 2021
Common stock, shares issued | shares	618,815	[1]
Price Per Share | $ / shares	$ 14.84	[1]
Gross Proceeds | $	$ 9,183,220	[1]
March 24, 2021
Class Of Stock [Line Items]
Issuance Date	Mar. 24, 2021
Common stock, shares issued | shares	20,461
Price Per Share | $ / shares	$ 15.00
Gross Proceeds | $	$ 306,911
May 13, 2021
Class Of Stock [Line Items]
Issuance Date	May 13, 2021
Common stock, shares issued | shares	637,127	[1]
Price Per Share | $ / shares	$ 14.77	[1]
Gross Proceeds | $	$ 9,410,371	[1]
August 12, 2021
Class Of Stock [Line Items]
Issuance Date	Aug. 12, 2021
Common stock, shares issued | shares	575,032	[1]
Price Per Share | $ / shares	$ 14.61	[1]
Gross Proceeds | $	$ 8,401,215	[1]
September 29, 2021
Class Of Stock [Line Items]
Issuance Date	Sep. 29, 2021
Common stock, shares issued | shares	1,265,128
Price Per Share | $ / shares	$ 15.00
Gross Proceeds | $	$ 18,976,917
October 25, 2021
Class Of Stock [Line Items]
Issuance Date	Oct. 25, 2021
Common stock, shares issued | shares	6,850,000
Price Per Share | $ / shares	$ 14.60
Gross Proceeds | $	$ 100,010,000

[1] Shares were issued as part of the dividend reinvestment plan.