Income Taxes (Details 5) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Tax balances presented in accompanying consolidated balance sheets
Current deferred income taxes	$ 88,508	$ 37,401
Intangibles and other assets	31,102	21,779
Accrued liabilities	1,477	3,543
Deferred income tax liabilities	120,934	124,847
Net deferred tax liabilities	$ (2,801)	$ (69,210)

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

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- Definition

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

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- Definition

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