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Fair Value (Level 3 Fair Value Measurements Using Significant Other Unobservable Inputs for Acquisition-Related Contingent Consideration) (Details) - Significant Other Unobservable Inputs (Level 3) [Member]
$ in Thousands
12 Months Ended
Dec. 31, 2014
USD ($)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Beginning Balance $ 8,032
Amounts acquired
Transfers in (out) of Level 3
Changes in fair value included in earnings $ (8,032)
Ending Balance