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Note 11 - Plant Consolidations - Restructuring Costs (Details) - Newburyport, Massachusetts Facility [Member] - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Relocation $ 63 $ 55 $ 63 $ 178
Total $ 63 $ 55 $ 63 $ 178