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Note 17 - Quarterly Financial Summary (Unaudited) | 12 Months Ended
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Dec. 31, 2021
Notes to Financial Statements |
Quarterly Financial Information [Text Block] | 17. QUARTERLY FINANCIAL SUMMARY (UNAUDITED) The following table provides a summary of selected financial results of operations by quarter for the years ended December 31, 2021 and 2020 as follows:
2021 |  | First |  |  | Second |  |  | Third |  |  | Fourth |
Revenues |  | $ | 32,728 |  |  | $ | 46,491 |  |  | $ | 40,389 |  |  | $ | 26,011 |
Gross profit |  |  | 282 |  |  |  | 2,198 |  |  |  | 2,074 |  |  |  | 957 |
Operating loss |  |  | (4,311 | ) |  |  | (2,311 | ) |  |  | (1,997 | ) |  |  | (3,975 | )
Net (loss) income |  |  | (1,210 | ) |  |  | 10,252 |  |  |  | (2,105 | ) |  |  | (4,090 | )
Net (loss) income per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | (0.07 | ) |  | $ | 0.55 |  |  | $ | (0.11 | ) |  | $ | (0.21 | )
Diluted |  | $ | (0.07 | ) |  | $ | 0.53 |  |  | $ | (0.11 | ) |  | $ | (0.21 | )
2020 |  | First |  |  | Second |  |  | Third |  |  | Fourth |
Revenues |  | $ | 48,634 |  |  | $ | 54,926 |  |  | $ | 54,614 |  |  | $ | 40,322 |
Gross profit |  |  | 6,172 |  |  |  | 5,417 |  |  |  | 3,738 |  |  |  | 2,674 |
Operating income (loss) |  |  | 1,680 |  |  |  | 1,035 |  |  |  | (475 | ) |  |  | (1,818 | )
Net income (loss) |  |  | 954 |  |  |  | 529 |  |  |  | (1,003 | ) |  |  | (1,967 | )
Net income (loss) per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 0.06 |  |  | $ | 0.03 |  |  | $ | (0.06 | ) |  | $ | (0.12 | )
Diluted |  | $ | 0.06 |  |  | $ | 0.03 |  |  | $ | (0.06 | ) |  | $ | (0.12 | )

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- Definition The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -URI http://asc.fasb.org/topic&trid=2126967 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=124502072&loc=SL124452896-108306 + Details
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