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Income Taxes (Details Textual) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Income Taxes (Textual) [Abstract] |  |  |
U.S. capital loss carryfowards, expiration period | 2013 |  |
Foreign net operating loss carryforwards expiration period start year | 2013 |  |
Foreign net operating loss carryforwards expiration period end year | 2017 |  |
Valuation allowance | $ (2,329,000) | $ (3,115,000) |
U.S. capital loss carryfowards, valuation allowance, amount | 2,000,000 |  |
Net decrease in valuation allowance from the prior year | 800,000 |  |
Deferred tax liability not established by the company | 117,000,000 |  |
Income taxes paid, net of refunds | 16,000,000 | 14,000,000 | 8,400,000
Recognized accrued interest and penalties lapsed | 100,000 | 100,000 | 100,000
Payment of interest accrued | 600,000 | 500,000 | 400,000
Accrued penalties payment | 300,000 | 300,000 | 300,000
Unrecognized tax benefits that would impact effective tax rate | 700,000 | 500,000 | 400,000
Decrease in unrecognized tax benefits | 200,000 |  |
Foreign Country [Member] |  |  |
Tax Credit Carryforward [Line Items] |  |  |
Foreign net operating loss carryfowards | 800,000 |  |
Foreign net operating loss carryfowards, valuation allowance, amount | 300,000 |  |
Internal Revenue Service (IRS) [Member] |  |  |
Tax Credit Carryforward [Line Items] |  |  |
U.S. capital loss carryfowards | $ 2,000,000 |  |

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