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Note 2 - Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2019
Notes Tables |
Schedule of Accrued Liabilities [Table Text Block] |
|  | December 31, |
|  | 2019 |  |  | 2018 |
Accrued liabilities: |  |  |  |  |  |  |  |
Accrued bonus |  | $ | 3,977 |  |  | $ | 358 |
Accrued vacation payable |  |  | 2,263 |  |  |  | 2,211 |
Operating lease liabilities |  |  | 1,642 |  |  |  | - |
Accrued sales tax |  |  | 1,537 |  |  |  | 1,753 |
Finance lease liabilities |  |  | 420 |  |  |  | 416 |
Workers compensation reserves |  |  | 269 |  |  |  | 452 |
Other |  |  | 3,684 |  |  |  | 2,773 |
Total accrued liabilities |  | $ | 13,792 |  |  | $ | 7,963 |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Year Ended December 31, |
|  | 2019 |  |  | 2018 |  |  | 2017 |
Income (loss) from continuing operations |  | $ | 27,902 |  |  | $ | 20,312 |  |  | $ | (8,392 | )
Loss on discontinued operations |  |  | - |  |  |  | - |  |  |  | (1,771 | )
Net income (loss) |  | $ | 27,902 |  |  | $ | 20,312 |  |  | $ | (10,163 | )
Basic weighted-average common shares outstanding |  |  | 9,741 |  |  |  | 9,726 |  |  |  | 9,613 |
Effect of potentially dilutive common shares (1) |  |  | 38 |  |  |  | 7 |  |  |  | - |
Diluted weighted-average common shares outstanding |  |  | 9,779 |  |  |  | 9,733 |  |  |  | 9,613 |
Income (loss) per basic common share: |  |  |  |  |  |  |  |  |  |  |  |
Continuing operations |  | $ | 2.86 |  |  | $ | 2.09 |  |  | $ | (0.88 | )
Discontinued operations |  |  | - |  |  |  | - |  |  |  | (0.18 | )
Net income (loss) per share |  | $ | 2.86 |  |  | $ | 2.09 |  |  | $ | (1.06 | )
Income (loss) per diluted common share: |  |  |  |  |  |  |  |  |  |  |  |
Continuing operations |  | $ | 2.85 |  |  | $ | 2.09 |  |  | $ | (0.88 | )
Discontinued operations |  |  | - |  |  |  | - |  |  |  | (0.18 | )
Net income (loss) per share assuming dilution |  | $ | 2.85 |  |  | $ | 2.09 |  |  | $ | (1.06 | )

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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