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Significant Accounting Policies (Intangible Amortization Expense Table) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]  
2013 $ 48,156
2014 45,129
2015 43,319
2016 43,429
2017 42,375
Thereafter 202,597
Total $ 425,005