Note 17 - Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Operating lease right-of-use assets	$ 21,252	$ 14,217
Operating lease liability, current	6,880	6,591
Operating lease liability, long-term	14,668	8,064
Total operating lease liabilities	21,548	14,655
Property, plant and equipment, gross	148,062	146,749
Accumulated depreciation	(109,852)	(112,248)
Property, plant and equipment, net	38,210	34,501
Total finance lease liabilities	2,013
Other Liabilities [Member]
Total operating lease liabilities	21,548
Other current liabilities	363	198
Other long-term liabilities	1,650	790
Total finance lease liabilities	2,013	988
Assets under Finance Lease [Member]
Property, plant and equipment, gross	2,719	966
Accumulated depreciation	(690)	(391)
Property, plant and equipment, net	$ 2,029	$ 575