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Acquisitions Pro Forma Results (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Pro Forma [Abstract]    
Net Sales $ 349,637 $ 305,907
Business Acquisition, Pro Forma Revenue 351,916 334,554
NetIncomeLoss 6,214 29,688
Business Acquisition, Pro Forma Net Income (Loss) $ 6,674 $ 31,111