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Note 11 - Derivatives (Details Textual) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2020
Dec. 31, 2019
Jan. 31, 2018
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred $ (300)    
Interest Rate Swap [Member] | London Interbank Offered Rate (LIBOR) [Member]      
Derivative, Fixed Interest Rate     2.72%
Interest Rate Swap [Member] | PNC Bank [Member]      
Derivative Asset, Notional Amount     $ 36,000
Term Loan [Member]      
Long-term Debt, Gross $ 43,911 $ 54,997  
Senior Secured Credit Facility [Member] | Revolving Credit Facility [Member]      
Line of Credit Facility, Maximum Borrowing Capacity     25,000
Senior Secured Credit Facility [Member] | Term Loan [Member]      
Long-term Debt, Gross     $ 64,000