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Income Taxes (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015
Tax Credit Carryforward [Line Items] |  |
Alternative minimum tax | $ 111,000 |
Expiration date | Dec. 31, 2036 |
Current: |  |
Federal | $ 0 | $ 0
State and local | 8,000 | 8,000
Foreign | 41,000 | 0
Total Current | 49,000 | 8,000
Deferred: |  |
Federal | (211,000) | (292,000)
State and local | 267,000 | (12,000)
Foreign | 55,000 | (1,000)
Total before change in valuation allowance | 111,000 | (305,000)
Change in Valuation Allowance | (325,000) | 305,000
Net deferred | (214,000) | 0
(Benefit) provision for income taxes | (165,000) | 8,000
Reconciliation of provision (benefit) for income taxes [Abstract] |  |
Tax provision at expected statutory rate | (8,000) | (239,000)
State taxes, net of federal benefit | (25,000) | 4,000
Permanent differences | 6,000 | 8,000
Credits | (123,000) | (97,000)
Foreign tax expense, and other | 11,000 | 27,000
True-up to State NOL | 299,000 | 0
Change in Valuation Allowance | (325,000) | 305,000
(Benefit) provision for income taxes | (165,000) | 8,000
Loss before income taxes from domestic operations | (438,000) | (731,000)
Profit before income taxes from foreign operations | 417,000 | 28,000
Earnings of Company's foreign subsidiaries not considered to be indefinitely reinvested | 153,000 |
Earnings of non-U.S. subsidiaries considered to be indefinitely reinvested | 628,000 |
Deferred tax assets [Abstract] |  |
Inventory reserve | 1,083,000 | 1,179,000
Fixed assets | 0 | 0
Other reserves and accruals | 213,000 | 173,000
Stock-based compensation | 384,000 | 380,000
Undistributed foreign earnings | 0 | 0
Other | 0 | 0
Tax credit carry-forwards | 1,921,000 | 1,840,000
Federal tax loss carry-forwards | 3,428,000 | 3,270,000
State tax loss carry-forwards | 627,000 | 915,000
Foreign tax loss carry-forwards | 214,000 | 269,000
Total deferred income tax assets | 7,870,000 | 8,026,000
Valuation allowance | (7,305,000) | (7,631,000)
Net deferred tax assets | 214,000 | 0
Deferred tax liabilities [Abstract] |  |
Inventory reserve | 0 | 0
Fixed assets | 151,000 | 230,000
Other reserves and accruals | 0 | 0
Stock-Based Compensation | 0 | 0
Undistributed foreign earnings | 144,000 | 97,000
Other | 56,000 | 68,000
Total deferred income tax liabilities | 351,000 | 395,000
Deferred tax assets (liabilities), net | 214,000 | $ 0
Research and Development Credit Carryforwards [Member] |  |
Tax Credit Carryforward [Line Items] |  |
Tax credit carryforward amount | $ 1,450,000 |
Research and Development Credit Carryforwards [Member] | Minimum [Member] |  |
Tax Credit Carryforward [Line Items] |  |
Expiration date | Dec. 31, 2020 |
Research and Development Credit Carryforwards [Member] | Maximum [Member] |  |
Tax Credit Carryforward [Line Items] |  |
Expiration date | Dec. 31, 2036 |
Foreign Tax Credit Carryforward [Member] |  |
Tax Credit Carryforward [Line Items] |  |
Tax credit carryforward amount | $ 359,000 |
Foreign Tax Credit Carryforward [Member] | Minimum [Member] |  |
Tax Credit Carryforward [Line Items] |  |
Expiration date | Dec. 31, 2018 |
Foreign Tax Credit Carryforward [Member] | Maximum [Member] |  |
Tax Credit Carryforward [Line Items] |  |
Expiration date | Dec. 31, 2020 |
Federal [Member] |  |
Operating Loss Carryforwards [Line Items] |  |
Net operating loss carryforwards | $ 10,075,000 |
State [Member] |  |
Operating Loss Carryforwards [Line Items] |  |
Net operating loss carryforwards | $ 16,263,000 |

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