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Note 3 - Exit and Disposal Activities - Summary of Pre-tax Restructuring Chargers (Details) - Transition of Production from the Broadway Plant [Member]
Dec. 31, 2016
USD ($)
Total Program $ 4,514,000
Recognized Costs 645,000
Remaining Costs to be Recognized 3,869,000
Employee Severance [Member]  
Total Program 1,265,000
Recognized Costs 427,000
Remaining Costs to be Recognized 838,000
Asset Impairment [Member]  
Total Program 188,000
Recognized Costs 188,000
Remaining Costs to be Recognized 0
Equipment Relocation Costs [Member]  
Total Program 2,531,000
Recognized Costs 0
Remaining Costs to be Recognized 2,531,000
Other Restructuring [Member]  
Total Program 530,000
Recognized Costs 30,000
Remaining Costs to be Recognized $ 500,000