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Income Taxes (Deferred Tax Liability Schedule) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Deferred Tax Assets (Liabilities), Net [Abstract]
Deferred Tax Assets (Liabilities), Net, Current	$ 3,088	$ 2,129
Deferred Tax Assets (Liabilities), Net, Noncurrent	137,648	114,167
Net deferred tax liabilities	$ 134,560	$ 112,038

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

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- Definition

Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences expected to be realized or consumed after one year (or the normal operating cycle, if longer).

+ References+ Details