Note 9 - Stock-Based Compensation (Details Textual) - USD ($)			6 Months Ended
	Jun. 03, 2025	Jun. 18, 2024	Jun. 30, 2025
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)			25,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount			$ 2,900,000
The 2015 Omnibus Equity Incentive Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares)	3,000,000	3,000,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)			3,200,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)			7,200,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)			25,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Full Value Awards (in shares)			1,200,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Partial Value Awards (in shares)			1,000,000
The 2015 Omnibus Equity Incentive Plan [Member] \| Minimum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)			1 year
The 2015 Omnibus Equity Incentive Plan [Member] \| Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)			4 years
The 2015 Omnibus Equity Incentive Plan [Member] \| Restricted Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)			2,000,000
The 2015 Omnibus Equity Incentive Plan [Member] \| Share-Based Payment Arrangement, Option [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)			10 years
Employee Stock Purchase Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Purchase Price of Common Stock, Percent			85.00%
Share-Based Compensation Arrangement by Share-Based Payment Award, Employee Contribution Limit, Percent			10.00%
Share-Based Compensation Arrangement by Share-Based Payment Award, Value, Shares Purchasable by Employees			$ 25,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Maximum Number of Shares Per Employee (in shares)			250
Share-Based Compensation Arrangement by Share-Based Payment Award, Increase in Maximum Number of Shares Purchasable (in shares)	250,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Maximum Number of Shares Purcahsable (in shares)			281,250

SMITH MICRO SOFTWARE, INC. 10-Q