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Note 11 - Long Term Debt (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Dec. 22, 2020
Apr. 18, 2020
Dec. 31, 2021
Dec. 31, 2020
Mar. 31, 2021
Jan. 31, 2018
Long-term Debt, Gross     $ 49,450      
Debt Issuance Costs, Net, Total     1,120 $ 1,393    
Repayments of Long-term Debt, Total     4,200 66,912    
Payment for Debt Extinguishment or Debt Prepayment Cost     (0) 599    
Write off of Deferred Debt Issuance Cost     0 $ 787    
Interest Rate Swap [Member] | PNC Bank [Member]            
Payment for Debt Extinguishment or Debt Prepayment Cost $ 500          
Derivative Asset, Notional Amount           $ 36,000
Derivative Asset, Notional Amount Of Instrument Cancelled 23,000          
London Interbank Offered Rate (LIBOR) [Member] | Interest Rate Swap [Member]            
Derivative, Fixed Interest Rate           2.72%
The Credit Agreement [Member]            
Debt Issuance Costs, Net, Total 1,300          
Debt Instrument, Quarterly Payment, Current Year         $ 500  
Debt Instrument Quarterly Payment Next Eight Years         750  
Debt Instrument, Quarterly Payment, Thereafter         $ 1,000  
Percentage of Consolidated Excess Cash Flow         50.00%  
Debt Instrument, Current Maturities, Excess Cash Flow Sweep     $ 500      
Debt, Weighted Average Interest Rate     3.00% 3.25%    
The Credit Agreement [Member] | London Interbank Offered Rate (LIBOR) [Member]            
Debt Instrument, Interest Rate, State Floor Percentage     0.50%      
The Credit Agreement [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]            
Debt Instrument, Basis Spread on Variable Rate     3.25%      
The Credit Agreement [Member] | Base Rate [Member]            
Debt Instrument, Interest Rate, State Floor Percentage     1.00%      
The Credit Agreement [Member] | The ABR Loan [Member] | Minimum [Member]            
Debt Instrument, Basis Spread on Variable Rate     1.50%      
The Credit Agreement [Member] | The ABR Loan [Member] | Maximum [Member]            
Debt Instrument, Basis Spread on Variable Rate     3.00%      
The Credit Agreement [Member] | Revolving Credit Facility [Member]            
Line of Credit Facility, Remaining Borrowing Capacity     $ 13,600      
The Prior Credit Facility [Member] | Revolving Credit Facility [Member]            
Repayments of Long-term Debt, Total 46,700          
Payment for Debt Extinguishment or Debt Prepayment Cost 600          
Paycheck Protection Program CARES Act [Member]            
Proceeds from Issuance of Long-term Debt, Total   $ 6,100        
Term Loan [Member]            
Long-term Debt, Gross     $ 38,000 $ 40,000    
Term Loan [Member] | The Prior Credit Facility [Member] | Revolving Credit Facility [Member]            
Write off of Deferred Debt Issuance Cost 800          
The LIBOR Loan and Pricing Grid Credit Agreement [Member] | The Credit Agreement [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]            
Debt Instrument, Basis Spread on Variable Rate     2.00%      
The Lenders [Member] | The Credit Agreement [Member] | Revolving Credit Facility [Member]            
Line of Credit Facility, Maximum Borrowing Capacity 25,000          
The Lenders [Member] | The Credit Agreement [Member] | Letter of Credit [Member]            
Line of Credit Facility, Maximum Borrowing Capacity 10,000          
The Lenders [Member] | The Credit Agreement [Member] | Swingline Loan Facility [Member]            
Line of Credit Facility, Maximum Borrowing Capacity 10,000          
The Lenders [Member] | Term Loan [Member] | The Credit Agreement [Member]            
Long-term Debt, Gross $ 40,000