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Income Taxes Operating Loss Carryforwards (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015
Operating Loss Carryforwards [Line Items] |  |
State net operating losses usable after limitations from Internal Revenue Code 382 | $ 22,418,000 |
State net operating loss carryforward | 1,646,000 | $ 1,922,000
Valuation allowance | 15,051,000 | 8,842,000
Foreign net operating loss carryforwards | 5,903,000 | $ 2,454,000
Investment Tax Credit | 828,000 |
State and Local Jurisdiction [Member] |  |
Operating Loss Carryforwards [Line Items] |  |
Valuation allowance | 1,454,000 |
Foreign Country [Member] |  |
Operating Loss Carryforwards [Line Items] |  |
Valuation allowance | 5,700,000 |
Foreign operating losses available to carryforward | 28,912,000 |
Foreign operating losses expiring between 2014 and 2016 | 27,494,000 |
Foreign operating losses to be carried forward indefinitely | $ 1,418,000 |

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