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Fair Value Measurements (Reconciliation of Fair Value Measurements of Assets and Liabilities Utilizing Level 3 Inputs) (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
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Jun. 30, 2014
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Jun. 30, 2013
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Jun. 30, 2014
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Jun. 30, 2013
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||
| Payments | $ (10,795) | |||
| Change in fair value of earn-out obligations | 628 | (6,867) | ||
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Level 3 [Member]
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||
| Fair value as of December 31, 2013 | 29,025 | |||
| Payments | (10,795) | |||
| Additions | 95 | |||
| Change in fair value of earn-out obligations | (6,867) | |||
| Fair value as of June 30, 2014 | $ 11,458 | $ 11,458 | ||