Note 6 - Property and Equipment - Summary of Property and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Property and equipment, gross	$ 89,862	$ 88,819
Less accumulated depreciation and amortization	(32,824)	(32,014)
Property and equipment, net	57,038	56,805
Land and Land Improvements [Member]
Property and equipment, gross	16,773	16,764
Building and Building Improvements [Member]
Property and equipment, gross	53,296	52,974
Machinery and Equipment [Member]
Property and equipment, gross	9,043	8,567
Office Equipment [Member]
Property and equipment, gross	9,875	9,638
Vehicles [Member]
Property and equipment, gross	865	865
Construction in Progress [Member]
Property and equipment, gross	$ 10	$ 11