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Note 14 - Equity Programs (Details Textual)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 02, 2015
USD ($)
shares
Sep. 30, 2021
USD ($)
shares
Sep. 30, 2020
shares
Sep. 30, 2021
USD ($)
shares
Sep. 30, 2020
USD ($)
shares
Sep. 03, 2021
USD ($)
Stock Repurchase Program, Number of Shares Authorized to be Repurchased (in shares) | shares 550,000          
Treasury Stock, Shares, Acquired (in shares) | shares   0 0 0 15,000  
Treasury Stock, Value, Acquired, Cost Method         $ 145  
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased (in shares) | shares   360,212   360,212    
At-the-Market Equity Program [Member]            
Stock Issuance Program, Authorized Amount           $ 50,000
Stock Issuance Program, Gross Proceeds, Percent           2.00%
Stock Issued During Period, Shares, New Issues (in shares) | shares   0        
ABL Credit Facility [Member]            
Unrestricted Common Stock Purchases, Maximum, Value $ 5,000          
ABL Credit Facility [Member] | Stock Repurchases Value Exceeds 5.0 Million, Option 1 [Member] | Minimum [Member]            
Line of Credit Facility Covenant Terms Percentage of Revolver Commitments 20.00%          
Balance Required for Compliance with Revolver Commitments   $ 95,000   $ 95,000    
ABL Credit Facility [Member] | Stock Repurchases Value Exceeds 5.0 Million, Option 2 [Member] | Minimum [Member]            
Line of Credit Facility Covenant Terms Percentage of Revolver Commitments 15.00%          
Balance Required for Compliance with Revolver Commitments   $ 71,300   $ 71,300    
Line of Credit Facility Covenant Terms EBITDA Ratio 1.00