Income Taxes - Net Deferred Balances (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Taxes on Income and Uncertain Tax Positions [Abstract]
Current deferred tax assets	$ 6,401	$ 6,338
Deferred Tax Assets Net Noncurrent	30,673	29,823
Current deferred tax liabilities	253	238
Non-current deferred tax liabilities	6,383	7,094
Deferred Tax Assets, Net, Total	$ 30,438	$ 28,829

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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