Income Taxes (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Reconciliation of income taxes based on the U.S. federal statutory rate
Income taxes (benefit) at the federal statutory rate	$ 6,916	$ 8,876	$ 3,735
Impact of incentive stock options	371	163	52
Increase (decrease) in valuation allowance	2,926
Capital gain on return of basis	3,079
State income taxes, net of federal taxes	334	75	54
Non-U.S. earnings taxed at different rates	(1,606)	(2,116)	(1,650)
Change in uncertain tax positions	(115)
Other permanent differences, net	(166)	93	423
Total expense (benefit)	(3,927)	5,168	4,569
Domestic Tax Authority [Member]
Reconciliation of income taxes based on the U.S. federal statutory rate
Increase (decrease) in valuation allowance	(12,740)	(704)	2,892
Foreign Tax Authority [Member]
Reconciliation of income taxes based on the U.S. federal statutory rate
Increase (decrease) in valuation allowance		$ (1,219)	$ (937)

Effective income tax rate reconciliation permanent differences.

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Income tax reconciliation capital gain on return of basis.

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- Definition

The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to changes in the valuation allowance for deferred tax assets in the period.

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The portion of the difference, between total income tax expense or benefit as reported in the Income Statement for the period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations, that is attributable to total foreign income tax expense or benefit. The foreign income tax expense or benefit difference represents the income tax expense or benefit at applicable domestic statutory income tax rates applied to foreign earnings or loss for the period versus the foreign income tax expense or benefit calculated by applying the appropriate foreign tax rates.

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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The portion of the difference between total income tax expense or benefit as reported in the Income Statement for the period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to differences in the deductibility of incentive stock options and other equity-based compensation costs in accordance with generally accepted accounting principles and enacted tax laws.

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The sum of the differences between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to changes in all income tax contingencies, whether recorded or adjusted, during the period.

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