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Deferred Costs and Other Intangibles, Net (Details 2) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]      
Amortization expense $ 11.0 $ 9.2 $ 31.2
Amortization of deferred financing costs $ 2.0 $ 1.8 $ 2.3