Note 11 - Stock-Based Compensation - Stock-Based Compensation Expense by Plan (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Stock-based compensation expense	$ 1,411	$ 1,030
Lucid Diagnostics 2018 Equity Plan [Member] \| Cost of Revenue [Member]
Stock-based compensation expense	113	33
Lucid Diagnostics 2018 Equity Plan [Member] \| Sales and Marketing [Member]
Stock-based compensation expense	253	221
Lucid Diagnostics 2018 Equity Plan [Member] \| General and Administrative [Member]
Stock-based compensation expense	905	600
Lucid Diagnostics 2018 Equity Plan [Member] \| Research and Development [Member]
Stock-based compensation expense	131	95
PAVmed 2014 Equity Plan [Member] \| Cost of Revenue [Member]
Stock-based compensation expense	1	38
PAVmed 2014 Equity Plan [Member] \| Sales and Marketing [Member]
Stock-based compensation expense	2	18
PAVmed 2014 Equity Plan [Member] \| General and Administrative [Member]
Stock-based compensation expense	2	1
PAVmed 2014 Equity Plan [Member] \| Research and Development [Member]
Stock-based compensation expense	$ 4	$ 24