Note 10 - Debt - Outstanding Letters of Credit (Details) - Letter of Credit [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Letters of Credit Amount Outstanding	$ 100	$ 100
Mt Laurel [Member]
Line of Credit, Issue Date	Mar. 29, 2010
Line of Credit, Expiration Date	Apr. 30, 2025
Lease Expiration Date	Apr. 30, 2031
Letters of Credit Amount Outstanding	$ 50	50
Mansfield [Member]
Line of Credit, Issue Date	Oct. 27, 2010
Line of Credit, Expiration Date	Dec. 31, 2024
Lease Expiration Date	Dec. 31, 2024
Letters of Credit Amount Outstanding	$ 50	$ 50