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Debt and Financing Arrangements (Long term Debt) (Details) - USD ($)
Jun. 30, 2019
Dec. 31, 2018
Mar. 07, 2017
Debt Instrument [Line Items]      
Term loan $ 292,224,000 $ 293,626,000  
Other 21,669,000 30,449,000  
Debt issuance costs (5,562,000) (6,092,000)  
Total 308,331,000 317,983,000  
Less: current maturities of debt 13,068,000 17,797,000  
Long-term debt 295,263,000 $ 300,186,000  
Senior Notes | New Term Loan Debt Facility      
Debt Instrument [Line Items]      
Debt instrument, face amount $ 293,300,000.0   $ 300,000,000