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Goodwill and Intangible Assets Intangible Assets (Details) (USD $)
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]          
Weighted Average Remaining Useful Life (in Years)     14 years 5 months 1 day   15 years 4 months 10 days
Gross Carrying Amount $ 333,451,000   $ 333,451,000   $ 327,951,000
Accumulated Amortization 34,355,000   34,355,000   17,412,000
Intangible assets amortization expense 5,700,000 800,000 16,900,000 2,500,000  
Customer Relationships
          
Finite-Lived Intangible Assets [Line Items]          
Weighted Average Remaining Useful Life (in Years)     14 years 5 months 23 days   15 years 4 months 28 days
Gross Carrying Amount 311,461,000   311,461,000   306,361,000
Accumulated Amortization 31,759,000   31,759,000   16,509,000
Trademarks and Trade Names
          
Finite-Lived Intangible Assets [Line Items]          
Weighted Average Remaining Useful Life (in Years)     13 years 7 months 13 days   14 years 8 months 16 days
Gross Carrying Amount 21,770,000   21,770,000   21,370,000
Accumulated Amortization 2,455,000   2,455,000   794,000
Other Intangible Assets
          
Finite-Lived Intangible Assets [Line Items]          
Weighted Average Remaining Useful Life (in Years)     2 years 4 months 24 days   3 years
Gross Carrying Amount 220,000   220,000   220,000
Accumulated Amortization $ 141,000   $ 141,000   $ 109,000