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Note 9 - Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2017
Notes Tables |
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] |
|  | Years Ended December 31, |
|  | 201 7 |  |  | 201 6 |
Current: |  |  |  |  |  |  |  |
Federal |  | $ | - |  |  | $ | (70 | )
State |  |  | - |  |  |  | 20 |
Foreign |  |  | 300 |  |  |  | 13 |
|  |  | 300 |  |  |  | (37 | )
Deferred: |  |  |  |  |  |  |  |
Federal |  |  | (1,717 | ) |  |  | 220 |
State |  |  | 55 |  |  |  | - |
Foreign |  |  | (7 | ) |  |  | (85 | )
|  |  | (1,669 | ) |  |  | 135 |
Total income tax provision |  | $ | (1,369 | ) |  | $ | 98 |
Schedule of Deferred Tax Assets and Liabilities [Table Text Block] |
|  | Years Ended December 31, |
|  | 2017 |  |  | 2016 |
Deferred Tax Liabilities: |  |  |  |  |  |  |  |
Property, Plant and Equipment |  | $ | - |  |  | $ | - |
Other |  |  | 38 |  |  |  | - |
Intangible Assets |  |  | 3,806 |  |  |  | 5,471 |
Total Deferred Tax Liabilities |  |  | 3,844 |  |  |  | 5,471 |
Deferred Tax Assets: |  |  |  |  |  |  |  |
Property, Plant and Equipment |  |  | 44 |  |  |  | 77 |
Net Operating Loss Carryforwards |  |  | 17,870 |  |  |  | 27,127 |
Tax Credit Carryforwards |  |  | 1,837 |  |  |  | 1,704 |
Intangible Assets |  |  | 1,535 |  |  |  | 2,923 |
Accrued Expenses, Reserves and Other |  |  | 1,359 |  |  |  | 1,527 |
Total Deferred Tax Assets |  |  | 22,645 |  |  |  | 33,358 |
Valuation Allowance for Deferred Tax Assets |  |  | (22,636 | ) |  |  | (33,331 | )
Net Deferred Tax Assets |  |  | 9 |  |  |  | 27 |
Net Deferred Tax Liabilities |  | $ | 3,835 |  |  | $ | 5,444 |
Schedule of Net Deferred Tax Liabilities [Table Text Block] |
|  | Years Ended December 31, |
|  | 201 7 |  |  | 2016 |
Non-Current Deferred Tax Assets |  | $ | 32 |  |  | $ | 94 |
Non-Current Deferred Tax Liabilities |  |  | (3,867 | ) |  |  | (5,538 | )
|  | $ | (3,835 | ) |  | $ | (5,444 | )
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] |
|  | Years Ended December 31, |
|  | 201 7 |  |  | 2016 |
United States |  | $ | 4,831 |  |  | $ | 2,803 |
Foreign |  |  | 1,464 |  |  |  | 777 |
|  | $ | 6,295 |  |  | $ | 3,580 |
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] |
|  | Years Ended December 31, |
|  | 2017 |  |  | 2016 |
Statutory Income Tax Rate |  |  | 34 | % |  |  | 34.0 | %
(Increase) Decrease in Tax Provision Resulting From: |  |  |  |  |  |  |  |
Equity Compensation |  |  | 0.7 |  |  |  | 9.6 |
Income Tax Credits |  |  | (0.9 | ) |  |  | (6.2 | )
Foreign Tax Rates |  |  | (3.8 | ) |  |  | (2.2 | )
Release of Unrecognized Tax Benefits |  |  | - |  |  |  | - |
Valuation Allowance |  |  | (20.9 | ) |  |  | (30 | )
Excess Accrual |  |  | - |  |  |  | (5.2 | )
Tax Rate Change |  |  | (30.8 | ) |  |  | - |
Other |  |  | (0.1 | ) |  |  | 2.7 |
Effective Income Tax Rate |  |  | (21.8 | )% |  |  | 2.7 | %

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