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Note 3 - Long-term Debt - Long-term Debt (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Long-term debt, gross $ 101,643 $ 119,826
Payments due within one year included in current liabilities 11,464 15,286
Debt issuance costs 517 537
Long-term debt less current maturities 89,662 104,003
BB&T [Member] | Term Loan Maturing January 22, 2026 [Member]    
Long-term debt, gross 23,476 37,838
BB&T [Member] | Term Loan Maturing February 26, 2024 [Member]    
Long-term debt, gross 24,000 25,500
BB&T [Member] | Term Loan Maturing May 2020 [Member]    
Long-term debt, gross $ 54,167 $ 56,488