Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Intangibles Assets (Details Textuals)

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Goodwill and Intangibles Assets (Details Textuals) - USD ($)
$ in Millions
6 Months Ended 12 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Dec. 31, 2017
Dec. 31, 2016
Adjustments to goodwill $ 0.3      
Goodwill impairment 0.0 $ 0.0    
Impairment of finite-lived intangible assets 0.0 0.0    
Indefinite-lived intangible assets     $ 4.4  
Impairment of indefinite-lived intangible assets $ 0.0 $ 0.0 $ 2.0 $ 1.3