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Note 9 - Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2016
Notes Tables |
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] |
|  | Years Ended December 31, |
|  | 201 6 |  |  | 201 5 |
Current: |  |  |  |  |  |  |  |
Federal |  | $ | (70 | ) |  | $ | 4 |
State |  |  | 20 |  |  |  | 15 |
Foreign |  |  | 13 |  |  |  | 111 |
|  |  | (37 | ) |  |  | 130 |
Deferred: |  |  |  |  |  |  |  |
Federal |  |  | 220 |  |  |  | 169 |
State |  |  | - |  |  |  | - |
Foreign |  |  | (85 | ) |  |  | 11 |
|  |  | 135 |  |  |  | 180 |
Total income tax provision |  | $ | 98 |  |  | $ | 310 |
Schedule of Deferred Tax Assets and Liabilities [Table Text Block] |
|  | Years Ended December 31, |
|  | 201 6 |  |  | 201 5 |
Deferred Tax Liabilities: |  |  |  |  |  |  |  |
Property, Plant and Equipment |  | $ | - |  |  | $ | - |
Intangible Assets |  |  | 5,471 |  |  |  | 4,631 |
Total Deferred Tax Liabilities |  |  | 5,471 |  |  |  | 4,631 |
Deferred Tax Assets: |  |  |  |  |  |  |  |
Property, Plant and Equipment |  |  | 77 |  |  |  | 288 |
Net Operating Loss Carry-Forwards |  |  | 27,127 |  |  |  | 27,283 |
Tax Credit Carry-Forwards |  |  | 1,704 |  |  |  | 1,596 |
Intangible Assets |  |  | 2,923 |  |  |  | 3,391 |
Accrued Expenses, Reserves and Other |  |  | 1,527 |  |  |  | 2,127 |
Total Deferred Tax Assets |  |  | 33,358 |  |  |  | 34,685 |
Valuation Allowance for Deferred Tax Assets |  |  | (33,331 | ) |  |  | (34,593 | )
Net Deferred Tax Assets |  |  | 27 |  |  |  | 92 |
Net Deferred Tax Liabilities |  | $ | 5,444 |  |  | $ | 4,539 |
Schedule of Net Deferred Tax Liabilities [Table Text Block] |
|  | Years Ended December 31, |
|  | 201 6 |  |  | 201 5 |
Current Deferred Tax Assets |  | $ | 94 |  |  | $ | 92 |
Non-Current Deferred Tax Liabilities |  |  | (5,538 | ) |  |  | (4,631 | )
|  | $ | (5,444 | ) |  | $ | (4,539 | )
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] |
|  | Years Ended December 31, |
|  | 201 6 |  |  | 201 5 |
United States |  | $ | 2,803 |  |  | $ | 2,582 |
Foreign |  |  | 777 |  |  |  | 568 |
|  | $ | 3,580 |  |  | $ | 3,150 |
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] |
|  | Years Ended December 31, |
|  | 201 6 |  |  | 201 5 |
Statutory Income Tax Rate |  |  | 34.0 | % |  |  | 34.0 | %
(Increase) Decrease in Tax Provision Resulting From: |  |  |  |  |  |  |  |
Equity Compensation |  |  | 9.6 |  |  |  | 2.2 |
Income Tax Credits |  |  | (6.2 | ) |  |  | (4.5 | )
Foreign Tax Rates |  |  | (2.2 | ) |  |  | (2.2 | )
Release of Unrecognized Tax Benefits |  |  | - |  |  |  | (231.6 | )
Valuation Allowance |  |  | (30 | ) |  |  | 210.9 |
Excess Accrual |  |  | (5.2 | ) |  |  | - |
Other |  |  | 2.7 |  |  |  | 1.0 |
Effective Income Tax Rate |  |  | 2.7 | % |  |  | 9.8 | %
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] |
|  | Years Ended December 31, |
|  | 201 6 |  |  | 201 5 |
Balance – beginning of year |  | $ | - |  |  | $ | 7,296 |
Increases related to current year tax positions |  |  | - |  |  |  | - |
Increases related to prior year tax positions |  |  | - |  |  |  | - |
Decreases related to prior year tax positions |  |  | - |  |  |  | - |
Expiration of statute of limitations for assessment of taxes |  |  | - |  |  |  | - |
Settlements of examinations |  |  | - |  |  |  | (7,296 | )
Balance – end of year |  | $ | - |  |  | $ | - |

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