XML 64 R53.htm IDEA: XBRL DOCUMENT v3.21.1
Note 6 - Revolving Line of Credit and Long-term Debt (Details Textual) - Senior Secured Credit Facility [Member] - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Jun. 22, 2020
Mar. 31, 2021
Dec. 31, 2020
Debt Instrument, Face Amount $ 65.0    
Debt Instrument, Interest Rate, Effective Percentage     4.20%
Debt Issuance Costs, Net, Total $ 1.8    
Interest Paid, Including Capitalized Interest, Operating and Investing Activities, Total   $ 0.3  
Debt Instrument, Collateral, Percentage of Stock of Domestic Subsidiaries 100.00%    
Term Loan [Member]      
Debt Instrument, Face Amount $ 40.0    
Debt Instrument, Term (Year) 5 years    
Repayments of Long-term Debt, Total   0.5 $ 1.0
Repayments of Long-term Lines of Credit   $ 6.5  
Debt Instrument, Interest Rate, Effective Percentage   3.25%  
Amortization of Debt Issuance Costs   $ 0.1  
Term Loan [Member] | Minimum [Member]      
Debt Instrument, Periodic Payment, Total $ 0.5    
Term Loan [Member] | Maximum [Member]      
Debt Instrument, Periodic Payment, Total $ 1.0    
Term Loan [Member] | Base Rate [Member] | Minimum [Member]      
Debt Instrument, Basis Spread on Variable Rate 1.25%    
Term Loan [Member] | Base Rate [Member] | Maximum [Member]      
Debt Instrument, Basis Spread on Variable Rate 1.75%    
Term Loan [Member] | Eurodollar [Member] | Minimum [Member]      
Debt Instrument, Basis Spread on Variable Rate 2.25%    
Term Loan [Member] | Eurodollar [Member] | Maximum [Member]      
Debt Instrument, Basis Spread on Variable Rate 2.75%    
Term Loan [Member] | Fed Funds Effective Rate Overnight Index Swap Rate [Member]      
Debt Instrument, Basis Spread on Variable Rate 0.50%    
Revolving Credit Facility [Member]      
Line of Credit Facility, Maximum Borrowing Capacity $ 25.0    
Debt Instrument, Term (Year) 5 years    
Revolving Credit Facility [Member] | Other Assets [Member]      
Debt Issuance Costs, Line of Credit Arrangements, Net, Total $ 0.7