Fair Value Measurements Reconciliation of Fair Value Measurements of Liability for Future Consideration Payments (Details) (Fair Value, Inputs, Level 3 [Member], SunTrust Acquisition Future Consideration Payments Liability [Member], USD $) In Thousands	9 Months Ended
	Sep. 30, 2011
Fair Value, Inputs, Level 3 [Member] | SunTrust Acquisition Future Consideration Payments Liability [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at December 31, 2010	$ 20,058
Adjustment to reflect final valuation	(2,600)	[1]
Changes in fair value	900	[2]
Contingent consideration payments	0
Balance at September 30, 2011	$ 18,358

[1] As a result of finalizing the valuation relating to the SunTrust Acquisition this adjustment was required to revise the preliminary estimate of fair value.

[2] Amounts included in Intangible asset related expense on the Consolidated Statements of Income.