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Note 6 - Long-term Debt - Long-term Debt (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Long-term debt, gross $ 119,826 $ 117,693
Payments due within one year included in current liabilities 15,286 6,000
Debt issuance costs 537 171
Long-term debt less current maturities 104,003 111,522
BB&T [Member] | Term Loan Maturing January 22, 2026 [Member]    
Long-term debt, gross 37,838 1,193
BB&T [Member] | Term Loan Maturing February 26, 2024 [Member]    
Long-term debt, gross 25,500 31,500
BB&T [Member] | Term Loan Maturing May 2020 [Member]    
Long-term debt, gross $ 56,488 $ 85,000