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Note 2 - Summary of Significant Accounting Policies - Summary of Accrued Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Accrued bonus | $ 3,977 | $ 358
Accrued vacation payable | 2,263 | 2,211
Accrued sales tax | 1,537 | 1,753
Workers' Compensation Liability, Current | 269 | 452
Other | 3,684 | 2,773
Total accrued liabilities | 13,792 | 7,963
Accrued Liability [Member] |  |
Operating lease liabilities | 1,642 |
Finance lease liabilities | 420 | 416
Workers' Compensation Liability, Current | $ 300 | $ 500

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