Income Taxes (Deferred Tax Liability Schedule) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Deferred Tax Assets (Liabilities), Net [Abstract]
Current deferred income tax assets	$ 3,097	$ 3,088
Deferred income taxes	176,020	137,648
Total deferred tax liabilities	$ 172,923	$ 134,560