Investments - Summary of Industry Composition of Investments at Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2023		Dec. 31, 2022	Dec. 31, 2021
Summary Of Investment Holdings [Line Items]
Fair Value	$ 1,566,045	[1],[2],[3]	$ 1,262,956	$ 1,262,956
Percentage of Fair Value	100.00%		100.00%	100.00%
Health Care Equipment & Services
Summary Of Investment Holdings [Line Items]
Fair Value	$ 440,881			$ 361,940
Percentage of Fair Value	28.10%			28.70%
Software And Services
Summary Of Investment Holdings [Line Items]
Fair Value	$ 290,688			$ 268,305
Percentage of Fair Value	18.60%			21.30%
Commercial & Professional Services
Summary Of Investment Holdings [Line Items]
Fair Value	$ 216,793			$ 201,213
Percentage of Fair Value	13.80%			15.90%
Consumer Services
Summary Of Investment Holdings [Line Items]
Fair Value	$ 147,438			$ 118,898
Percentage of Fair Value	9.40%			9.40%
Diversified Financials
Summary Of Investment Holdings [Line Items]
Fair Value	$ 93,185			$ 28,975
Percentage of Fair Value	6.00%			2.30%
Insurance
Summary Of Investment Holdings [Line Items]
Fair Value	$ 75,248			$ 58,032
Percentage of Fair Value	4.80%			4.60%
Pharmaceuticals Biotechnology And Life Sciences
Summary Of Investment Holdings [Line Items]
Fair Value	$ 63,716			$ 55,020
Percentage of Fair Value	4.10%			4.40%
Retailing
Summary Of Investment Holdings [Line Items]
Fair Value	$ 60,162			$ 54,832
Percentage of Fair Value	3.80%			4.30%
Capital Goods
Summary Of Investment Holdings [Line Items]
Fair Value	$ 50,402			$ 40,838
Percentage of Fair Value	3.20%			3.20%
Automobiles and Components
Summary Of Investment Holdings [Line Items]
Fair Value	$ 37,391			$ 38,004
Percentage of Fair Value	2.40%			3.00%
Consumer Durables And Apparel
Summary Of Investment Holdings [Line Items]
Fair Value	$ 19,244			$ 19,244
Percentage of Fair Value	1.20%			1.50%
Materials
Summary Of Investment Holdings [Line Items]
Fair Value	$ 13,218
Percentage of Fair Value	0.80%
Energy
Summary Of Investment Holdings [Line Items]
Fair Value	$ 12,187			$ 2,185
Percentage of Fair Value	0.80%			0.20%
Technology, Hardware & Equipment
Summary Of Investment Holdings [Line Items]
Fair Value	$ 10,422
Percentage of Fair Value	0.70%
Semiconductor and Semiconductor Equipment
Summary Of Investment Holdings [Line Items]
Fair Value	$ 9,314
Percentage of Fair Value	0.60%
Food, Beverage & Tobacco
Summary Of Investment Holdings [Line Items]
Fair Value	$ 8,338			$ 8,491
Percentage of Fair Value	0.50%			0.70%
Household And Personal Products
Summary Of Investment Holdings [Line Items]
Fair Value	$ 7,116
Percentage of Fair Value	0.50%
Transportation
Summary Of Investment Holdings [Line Items]
Fair Value	$ 4,414			$ 1,254
Percentage of Fair Value	0.30%			0.10%
Telecommunication Services
Summary Of Investment Holdings [Line Items]
Fair Value	$ 4,028			$ 4,061
Percentage of Fair Value	0.30%			0.30%
Food & Staples Retailing
Summary Of Investment Holdings [Line Items]
Fair Value	$ 1,860			$ 1,664
Percentage of Fair Value	0.10%			0.10%

[1] All debt investments are income-producing, unless otherwise noted. Equity and member interests are non-income-producing unless otherwise noted. The Company generally acquires its investments in private transactions exempt from registration under the Securities Act. Its investments are therefore generally subject to certain limitations on resale, and may be deemed to be “restricted securities” under the Securities Act.

[2] All positions held are non-controlled/non-affiliated investments, unless otherwise noted, as defined by the 1940 Act. Non-controlled/non-affiliated investments are investments that are neither controlled nor affiliated.

[3] The fair value of the investment was determined using significant unobservable inputs unless otherwise noted, as defined by the 1940 Act. See Note 2 “Summary of Significant Accounting Policies”.