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Income Taxes (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Tax Credit Carryforward [Line Items] |  |  |
Deferred Tax Assets, Tax Credit Carryforwards, General Business | $ 9 |  |
Income (loss) before income taxes | (1,970) | $ 2,666 | $ 1,325
Valuation allowance, deferred tax asset, change in amount | 6,879 |  |
Valuation allowance, decrease in expiration of reserved state tax credit-carryforwards | 287 |  |
Valuation allowance, increase in net operating loss and credit carryforwards, tax deductions | 258 |  |
Valuation allowance, amount | 11,567 | 4,688 |
Change in valuation allowance | 7,425 | 1,392 | 1,665
Undistributed earnings of foreign subsidiaries | 14,543 |  |
Deferred Tax Assets, Tax Credit Carryforwards And Operating Loss Carryforwards |  |  |
Tax Credit Carryforward [Line Items] |  |  |
Valuation allowance, amount | 454 |  |
Alternative Minimum Tax |  |  |
Tax Credit Carryforward [Line Items] |  |  |
Tax credit carryforward, amount | 54 |  |
Federal and State Tax Jurisdictions |  |  |
Tax Credit Carryforward [Line Items] |  |  |
Tax credit carryforward, amount | 1,571 |  |
Federal |  |  |
Tax Credit Carryforward [Line Items] |  |  |
Income (loss) before income taxes | (7,775) | (570) | 907
Federal | Research Tax Credit Carryforward |  |  |
Tax Credit Carryforward [Line Items] |  |  |
Tax credit carryforward, amount | 3,875 |  |
State Tax Authority |  |  |
Tax Credit Carryforward [Line Items] |  |  |
Tax credit carryforward, amount | 241 |  |
Change in valuation allowance | 7,425 |  |
State Tax Authority | Research Tax Credit Carryforward |  |  |
Tax Credit Carryforward [Line Items] |  |  |
Tax credit carryforward, amount | 3,529 |  |
Foreign Tax Authority |  |  |
Tax Credit Carryforward [Line Items] |  |  |
Income (loss) before income taxes | $ 5,805 | $ 3,236 | $ 418

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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible general business tax credit carryforwards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32632-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32621-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32559-109319 + Details
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