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Income Taxes Deferred Tax Summary (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Income Taxes [Abstract]
Net deferred tax assets	$ 14,177	$ 13,797
Deferred Tax Liabilities, Noncurrent	(61,948)	(51,306)
Deferred Tax Assets (Liabilities), Net	$ (47,771)	$ (37,509)

Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards expected to be realized or consumed within one year or operating cycle, if longer.

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