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Note 16 - Interest Bearing Loans (Details Textual) - New Credit Facility [Member]
$ in Thousands
Jul. 28, 2022
USD ($)
Oct. 01, 2021
USD ($)
Sep. 30, 2022
USD ($)
Mar. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Revolving Credit Facility [Member]          
Line of Credit Facility, Maximum Borrowing Capacity   $ 200,000      
Line of Credit Facility, Option to Increase Maximum Borrowing Capacity   $ 250,000      
Debt Instrument, Covenant, Minimum EBITDA of Guarantors   80.00%      
Debt Instrument, Covenant, Minimum Consolidated Assets of Guarantors   70.00%      
Debt Instrument, Covenant, Minimum EBITDA and Assets of Subsidiaries   5.00%      
Debt Instrument, LIBOR Floor   0.00%      
Line of Credit Facility, Commitment Fee Percentage   30.00%      
Debt Instrument, Covenant, Minimum Cash Flow Cover Ratio   1.5      
Debt Instrument, Covenant, Minimum Interest Cover Ratio   4.0      
Debt Instrument, Covenant, Maximum Senior Leverage Ratio   2.25   2.25  
Debt Instrument, Maximum Percentage of Aggregate Capital Expenditures   110.00%      
Repurchase or Redemption of Shares, Maximum Aggregate Amount       $ 50,000  
Drawdowns as Loans [Member]          
Line of Credit Facility, Maximum Borrowing Capacity $ 130,000 $ 130,000      
Long-Term Debt, Total     $ 0   $ 0
Drawdowns as Loans [Member] | One-third Drawn [Member]          
Line of Credit Facility, Upfront Fee Percentage   0.25%      
Drawdowns as Loans [Member] | Two-thirds Drawn [Member]          
Line of Credit Facility, Upfront Fee Percentage   0.50%      
Drawdowns as Loans [Member] | London Interbank Offered Rate (LIBOR) [Member]          
Debt Instrument, Basis Spread on Variable Rate   3.75%      
Letter of Credit [Member]          
Line of Credit Facility, Maximum Borrowing Capacity 88,000 $ 70,000      
Line of Credit Facility, Upfront Fee Percentage   0.75%      
Line of Credit Facility, Maximum Borrowing Capacity, Increase $ 18,000        
Letter of Credit [Member] | London Interbank Offered Rate (LIBOR) [Member]          
Debt Instrument, Basis Spread on Variable Rate   3.00%      
Bonds and Guarantees [Member]          
Long-Term Debt, Total     $ 49,300   $ 33,400