Debt (Schedule of Debt Maturities) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Long-term Debt, Gross, Fiscal Year Maturity [Abstract]
Remainder of 2014	$ 5,841
2015	14,503
2016	14,503
2017	14,503
2018	14,503
2019	1,377,825
2020	490,000
Total debt at June 30, 2014	$ 1,931,678	$ 1,545,340