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Note 6 - Debt - Principal Payments Over the Next 5 Years and Thereafter (Details)
$ in Thousands
Dec. 31, 2016
USD ($)
2017 $ 895
2018 930
2019 164,599
Total 166,424
Revolver Member [Member]  
2017
2018
2019 164,599
Total 164,599
Industrial Revenue Bonds [Member]  
2017 895
2018 930
2019
Total $ 1,825