Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Intangible Assets Goodwill (Details)

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Goodwill and Intangible Assets Goodwill (Details) - USD ($)
3 Months Ended
Sep. 30, 2017
Dec. 31, 2016
Goodwill [Line Items]    
Business Acquisition, Goodwill, Expected Tax Deductible Amount $ 0  
Goodwill 6,708,000 $ 6,708,000
Goodwill, Acquired During Period $ 0