Goodwill and Intangible Assets (Components of Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Amortizing intangible assets:
Gross Carrying Amount	$ 179,135	$ 178,826
Accumulated Amortization	(113,365)	(107,452)
Intangible Assets, net	65,770	71,374
Intangible assets not subject to amortization	30,427	30,427
Total other intangible assets	96,197	101,801
Customer contracts
Amortizing intangible assets:
Gross Carrying Amount	152,889	152,629
Accumulated Amortization	(91,820)	(86,584)
Intangible Assets, net	61,069	66,045
Other
Amortizing intangible assets:
Gross Carrying Amount	26,246	26,197
Accumulated Amortization	(21,545)	(20,868)
Intangible Assets, net	$ 4,701	$ 5,329