Annual report pursuant to Section 13 and 15(d)

Income Taxes - Unrecognized Tax Benefits (Details)

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Income Taxes - Unrecognized Tax Benefits (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Reconciliation of Unrecognized Tax Benefits [Roll Forward]  
Balance at December 31, 2012 $ 0
Additions from business combinations 2,569
Additions based on tax positions related to the current year 262
Balance at December 31, 2013 $ 2,831