SWK Holdings Corporation and Summary of Significant Accounting Policies - Narrative (Details)	3 Months Ended
	Mar. 31, 2025 USD ($) employee segment	Mar. 31, 2024 USD ($)	May 07, 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	26
Net book value of intangible assets	$ 200,000			$ 200,000
Amortization expense	$ 0	$ 300,000
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			$ 853,100,000