Goodwill and Intangible Assets Intangibles (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 121,657	$ 124,132
Accumulated Amortization	74,865	67,577
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	114,033	116,268
Accumulated Amortization	71,740	64,922
Trade name
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	7,624	7,864
Accumulated Amortization	$ 3,125	$ 2,655