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Goodwill and Other Intangible Assets - Gross Carrying Amount and Accumulated Amortization of Intangible Assets (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
Indefinite-lived Intangible Assets [Line Items]          
Indefinite-lived intangible assets $ 9,100,000   $ 9,100,000   $ 0
Finite-Lived Intangible Assets [Line Items]          
Definite-lived intangible assets, gross carrying value 1,900,000   1,900,000   600,000
Accumulated amortization (500,000)   (500,000)   (400,000)
Definite-lived intangible assets, net carrying value 1,400,000   1,400,000   200,000
Total intangible assets, gross carrying value 11,000,000   11,000,000   600,000
Total intangible assets, net carrying value 10,500,000   10,500,000   200,000
Estimated future amortization expense, to not exceed     200,000    
Amortization of intangibles 0 $ 0 0 $ 0  
Trade name          
Indefinite-lived Intangible Assets [Line Items]          
Indefinite-lived intangible assets 9,100,000   9,100,000   0
Customer relationships          
Finite-Lived Intangible Assets [Line Items]          
Definite-lived intangible assets, gross carrying value 800,000   800,000   0
Accumulated amortization 0   0   0
Definite-lived intangible assets, net carrying value 800,000   800,000   0
Other          
Finite-Lived Intangible Assets [Line Items]          
Definite-lived intangible assets, gross carrying value 1,100,000   1,100,000   600,000
Accumulated amortization (500,000)   (500,000)   (400,000)
Definite-lived intangible assets, net carrying value $ 600,000   $ 600,000   $ 200,000
Customer Relationships and Other Intangibles          
Finite-Lived Intangible Assets [Line Items]          
Average useful life (years)     10 years