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Goodwill and Intangible Assets - Future Amortization Expense (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]  
2014 $ 11,423
2015 14,796
2016 14,061
2017 13,677
2018 $ 13,140