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Discontinued Operations (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Liabilities      
Employee compensation and benefits $ 19,885 $ 23,400  
Post-retirement 5,663 10,929  
Total Liabilities 25,548 34,329  
Pre-tax earnings (loss) $ 3,813 $ 3,245 $ (3,477)