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Note 8 - Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2019
Notes Tables |
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] |
|  | Year ended December 31 |
|  | 2019 |  |  | 2018 |
Current: |  |  |  |  |  |  |  |
Federal |  | $ | - |  |  | $ | - |
State |  |  | 43 |  |  |  | - |
Foreign |  |  | 203 |  |  |  | 257 |
|  |  | 246 |  |  |  | 257 |
Deferred: |  |  |  |  |  |  |  |
Federal |  |  | 1,236 |  |  |  | (18,514 | )
State |  |  | - |  |  |  | - |
Foreign |  |  | (25 | ) |  |  | (129 | )
|  |  | 1,211 |  |  |  | (18,643 | )
Total income tax provision |  | $ | 1,457 |  |  | $ | (18,386 | )
Schedule of Deferred Tax Assets and Liabilities [Table Text Block] |
|  | December 31 |
|  | 2019 |  |  | 2018 |
Deferred tax assets: |  |  |  |  |  |  |  |
Property, plant and equipment |  | $ | - |  |  | $ | 168 |
Net operating loss carryforwards |  |  | 14,579 |  |  |  | 15,622 |
Tax credit carryforwards |  |  | 1,907 |  |  |  | 1,817 |
Intangible assets |  |  | 1,283 |  |  |  | 1,231 |
Accrued expenses, reserves and other |  |  | 2,265 |  |  |  | 1,838 |
Total deferred tax assets |  |  | 20,034 |  |  |  | 20,676 |
Valuation allowance for deferred tax assets |  |  | (1,942 | ) |  |  | (1,942 | )
Net deferred tax assets |  |  | 18,092 |  |  |  | 18,734 |
Deferred tax liabilities: |  |  |  |  |  |  |  |
Other |  |  | - |  |  |  | (25 | )
Property, plant and equipment |  |  | (342 | ) |  |  | - |
Intangible assets |  |  | (5,087 | ) |  |  | (3,856 | )
Total deferred tax liabilities |  |  | (5,429 | ) |  |  | (3,881 | )
Net deferred tax assets |  | $ | 12,663 |  |  | $ | 14,853 |
Schedule of Net Deferred Tax Liabilities [Table Text Block] | <div style="display: inline; font-family: times new roman; font-size: 10pt"><table style="margin-right: 15%; margin-left: 54pt; font-size: 10pt; font-family: "Times New Roman", Times, serif; text-indent: 0px; min-; min-width: 700px;" cellspacing="0" cellpadding="0" border="0"> <tr style="vertical-align: bottom;"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td colspan="6" style="text-align: center; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: thin solid rgb(0, 0, 0);"> <div style=" font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><div style="display: inline; font-weight: bold;"><div style="display: inline; font-weight: bold;">December 31</div></div></div> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> </tr> <tr style="vertical-align: bottom;"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td colspan="2" style="text-align: center; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <div style=" font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><div style="display: inline; font-weight: bold;"><div style="display: inline; font-weight: bold;">2019</div></div></div> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; padding-bottom: 1px;"> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td colspan="2" style="text-align: center; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <div style=" font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><div style="display: inline; font-weight: bold;"><div style="display: inline; font-weight: bold;">2018</div></div></div> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; padding-bottom: 1px;"> </td> </tr> <tr style="vertical-align: bottom;"> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; width: 64%;"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;">Deferred tax assets</div> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;">$</td> <td style="width: 15%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">13,222</div></td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;" nowrap="nowrap"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;">$</td> <td style="width: 15%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">15,444</div></td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;" nowrap="nowrap"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;">Deferred tax liabilities</div> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"> </td> <td style="width: 15%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">(559</div></td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;" nowrap="nowrap">)</td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"> </td> <td style="width: 15%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">(591</div></td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;" nowrap="nowrap">)</td> </tr> <tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td> <td style="width: 15%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">12,663</div></td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;" nowrap="nowrap"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td> <td style="width: 15%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">14,853</div></td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;" nowrap="nowrap"> </td> </tr> </table></div>
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] |
|  | Year ended December 31 |
|  | 2019 |  |  | 2018 |
United States |  | $ | 5,992 |  |  | $ | 6,226 |
Foreign |  |  | 779 |  |  |  | 387 |
|  | $ | 6,771 |  |  | $ | 6,613 |
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] |
|  | Year ended December 31 |
|  | 2019 |  |  | 2018 |
Statutory income tax rate |  |  | 21 | % |  |  | 21 | %
(Increase) decrease in tax provision resulting from: |  |  |  |  |  |  |  |
Equity compensation |  |  | (0.4 | ) |  |  | (2.9 | )
Income tax credits |  |  | (0.4 | ) |  |  | (1.0 | )
Foreign tax rates |  |  | (0.5 | ) |  |  | 0.3 |
Valuation allowance |  |  | - |  |  |  | (297.3 | )
Other |  |  | 1.8 |  |  |  | 2.0 |
Effective income tax rate |  |  | 21.5 | % |  |  | (277.9 | )%

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