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Note 2 - Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2020
Notes Tables |
Schedule of Accrued Liabilities [Table Text Block] |
|  | December 31, |
|  | 2020 |  |  | 2019 |
Accrued liabilities: |  |  |  |  |  |  |  |
Accrued bonus |  | $ | 3,747 |  |  | $ | 3,977 |
Accrued vacation payable |  |  | 2,328 |  |  |  | 2,263 |
Foreign currency forward contracts |  |  | 1,150 |  |  |  | 138 |
Finance lease liabilities |  |  | 375 |  |  |  | 420 |
Workers compensation reserves |  |  | 237 |  |  |  | 269 |
Other |  |  | 8,977 |  |  |  | 5,083 |
Total accrued liabilities |  | $ | 16,814 |  |  | $ | 12,150 |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Year Ended December 31, |
|  | 2020 |  |  | 2019 |  |  | 2018 |
Net income |  | $ | 19,050 |  |  | $ | 27,902 |  |  | $ | 20,312 |
Basic weighted-average common shares outstanding |  |  | 9,788 |  |  |  | 9,741 |  |  |  | 9,726 |
Effect of potentially dilutive common shares (1) |  |  | 85 |  |  |  | 38 |  |  |  | 7 |
Diluted weighted-average common shares outstanding |  |  | 9,873 |  |  |  | 9,779 |  |  |  | 9,733 |
Net income per common share |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 1.95 |  |  | $ | 2.86 |  |  | $ | 2.09 |
Diluted |  | $ | 1.93 |  |  | $ | 2.85 |  |  | $ | 2.09 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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