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Debt (Schedule of Maturities of Long-term Debt) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Debt Disclosure [Abstract]  
2013 $ 102,436
2014 0
2015 0
2016 0
2017 0
After 2017 250,000
Unamortized debt issuance expense (661)
Total $ 351,775