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Debt Contractual Maturities (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 31, 2017
Oct. 06, 2017
Debt Instrument [Line Items]      
2018 $ 5,437    
2019 10,875    
2020 14,500    
2021 14,500    
2022 97,875    
Total $ 143,187 $ 245,000 $ 245,000