SWK Holdings Corporation and Summary of Significant Accounting Policies (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2025 USD ($) employee	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($) employee segment	Sep. 30, 2024 USD ($)	Oct. 31, 2025 USD ($) party	Dec. 31, 2024 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of reportable segments | segment			2
Number of full-time employees | employee	9		9
Intangible assets of net						$ 200,000
Amortization expense	$ 0	$ 0	$ 0	$ 500,000
Subsequent Event
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of parties with an executed transaction | party					58
Aggregate amount funded for financial products					$ 871,600,000