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Note 9 - Stock-based Compensation (Details Textual) - USD ($) $ in Millions			6 Months Ended
	May 26, 2026	Jun. 18, 2024	Jun. 30, 2026
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)			2,500,000
Maximum [Member] \| Restricted Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)			48 months
Minimum [Member] \| Restricted Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)			2 months
The 2015 Omnibus Equity Incentive Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares)	600,000	600,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)			900,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)			2,100,000
Stock Issued During Period, Shares, Restricted Stock Award, Gross (in shares)			40,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)			2,500
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount			$ 1
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
The 2015 Omnibus Equity Incentive Plan [Member] \| Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)			4 years