Quarterly report pursuant to Section 13 or 15(d)

Note 18 - Subsequent Event (Details Textual)

v3.21.4
Note 18 - Subsequent Event (Details Textual) - Revolving Credit Facility [Member] - The Facility [Member] - USD ($)
$ in Millions
Jan. 26, 2022
Dec. 21, 2018
Line of Credit Facility, Maximum Borrowing Capacity   $ 165.0
Debt Instrument, Covenant, Minimum Fixed Charge Coverage Ratio   1,000,000.0
Debt Covenant, Fixed Charge Coverage Ratio, Maximum Unused Availability   $ 18.5
Additional Margin on Variable Rate Option (Adjusted Term Sofr Rate) [Member] | Minimum [Member]    
Debt Instrument, Basis Spread on Variable Rate   0.50%
Additional Margin on Variable Rate Option (Adjusted Term Sofr Rate) [Member] | Maximum [Member]    
Debt Instrument, Basis Spread on Variable Rate   1.00%
Fed Funds Effective Rate Overnight Index Swap Rate [Member]    
Debt Instrument, Basis Spread on Variable Rate   0.50%
Subsequent Event [Member]    
Line of Credit Facility, Maximum Borrowing Capacity $ 125.0  
Debt Instrument, Covenant, Minimum Fixed Charge Coverage Ratio 1.0  
Debt Covenant, Fixed Charge Coverage Ratio, Maximum Unused Availability $ 14.0  
Subsequent Event [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]    
Debt Instrument, Basis Spread on Variable Rate 0.10%  
Subsequent Event [Member] | Additional Margin on Variable Rate Option (Adjusted Term Sofr Rate) [Member] | Minimum [Member]    
Debt Instrument, Basis Spread on Variable Rate 1.25%  
Subsequent Event [Member] | Additional Margin on Variable Rate Option (Adjusted Term Sofr Rate) [Member] | Maximum [Member]    
Debt Instrument, Basis Spread on Variable Rate 2.00%  
Subsequent Event [Member] | Fed Funds Effective Rate Overnight Index Swap Rate [Member]    
Debt Instrument, Basis Spread on Variable Rate 0.50%  
Subsequent Event [Member] | OneMonthAdjusted Term SOFR Rate [Member]    
Debt Instrument, Basis Spread on Variable Rate 1.00%  
Subsequent Event [Member] | OneMonthAdditionalMarginOnVariableRateOptionMember | Minimum [Member]    
Debt Instrument, Basis Spread on Variable Rate 0.25%  
Subsequent Event [Member] | OneMonthAdditionalMarginOnVariableRateOptionMember | Maximum [Member]    
Debt Instrument, Basis Spread on Variable Rate 1.00%