Common Stock and Share Transactions - Schedule of Amounts Received and Shares of Common Stock Issued to Shareholder (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Schedule of Amounts Received and Shares of Common Stock Issued to Shareholder [Line Items]
DRIP shares issued			621
DRIP value	$ 1,083	$ 854	$ 3,267	$ 10,979
Dividends [Member]
Schedule of Amounts Received and Shares of Common Stock Issued to Shareholder [Line Items]
DRIP shares issued				2,092
DRIP value				$ 10,979
Dividends [Member] \| December 31, 2024 [Member]
Schedule of Amounts Received and Shares of Common Stock Issued to Shareholder [Line Items]
Dividend payment date			Jan. 15, 2025
DRIP shares issued			203
DRIP value			$ 1,070
Dividends [Member] \| March 31, 2025 [Member]
Schedule of Amounts Received and Shares of Common Stock Issued to Shareholder [Line Items]
Dividend payment date			Apr. 15, 2025
DRIP shares issued			212
DRIP value			$ 1,114
Dividends [Member] \| June 30, 2025 [Member]
Schedule of Amounts Received and Shares of Common Stock Issued to Shareholder [Line Items]
Dividend payment date			Jul. 16, 2025
DRIP shares issued			206
DRIP value			$ 1,083
Dividends [Member] \| December 29, 2023 [Member]
Schedule of Amounts Received and Shares of Common Stock Issued to Shareholder [Line Items]
Dividend payment date				Jan. 16, 2024
DRIP shares issued				883
DRIP value				$ 4,616
Dividends [Member] \| March 29, 2024 [Member]
Schedule of Amounts Received and Shares of Common Stock Issued to Shareholder [Line Items]
Dividend payment date				Apr. 17, 2024
DRIP shares issued				1,047
DRIP value				$ 5,509
Dividends [Member] \| June 28, 2024 [Member]
Schedule of Amounts Received and Shares of Common Stock Issued to Shareholder [Line Items]
Dividend payment date				Jul. 15, 2024
DRIP shares issued				162
DRIP value				$ 854

Kayne DL 2021, Inc. 10-Q