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Quarterly Financial Data (Unaudited) | 12 Months Ended
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Mar. 31, 2021
Quarterly Financial Information Disclosure [Abstract] |
Quarterly Financial Data (Unaudited) | Note 18 - Quarterly Financial Data (Unaudited): A capsule summary of the Company's unaudited quarterly results for fiscal 2021 and fiscal 2020 is presented below:
|  | First |  |  | Second |  |  | Third |  |  | Fourth |  |  | Total |
Year ended March 31, 2021 |  | Quarter |  |  | Quarter |  |  | Quarter |  |  | Quarter |  |  | Year |
Net sales |  | $ | 16,710 |  |  | $ | 27,954 |  |  | $ | 27,154 |  |  | $ | 25,671 |  |  | $ | 97,489 |
Gross profit |  |  | 1,568 |  |  |  | 7,693 |  |  |  | 6,227 |  |  |  | 4,981 |  |  |  | 20,469 |
Net income (loss) |  |  | (1,818 | ) |  |  | 2,744 |  |  |  | 1,060 |  |  |  | 388 |  |  |  | 2,374 |
Per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | (0.18 | ) |  | $ | .27 |  |  | $ | .11 |  |  | $ | .04 |  |  | $ | 0.24 |
Diluted |  | $ | (0.18 | ) |  | $ | .27 |  |  | $ | .11 |  |  | $ | .04 |  |  | $ | 0.24 |
Market price range of common stock |  | $10.36-15.86 |  |  | $11.88-14.94 |  |  | $12.56-16.97 |  |  | $13.92-17.44 |  |  | $10.36-17.44 |
|  | First |  |  | Second |  |  | Third |  |  | Fourth |  |  | Total |
Year ended March 31, 2020 |  | Quarter |  |  | Quarter |  |  | Quarter |  |  | Quarter |  |  | Year |
Net sales |  | $ | 20,593 |  |  | $ | 21,643 |  |  | $ | 25,286 |  |  | $ | 23,082 |  |  | $ | 90,604 |
Gross profit |  |  | 4,714 |  |  |  | 4,948 |  |  |  | 4,044 |  |  |  | 4,442 |  |  |  | 18,148 |
Net income |  |  | 82 |  |  |  | 1,205 |  |  |  | 9 |  |  |  | 576 |  |  |  | 1,872 |
Per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | .01 |  |  | $ | .12 |  |  | $ | — |  |  | $ | .06 |  |  | $ | 0.19 |
Diluted |  | $ | .01 |  |  | $ | .12 |  |  | $ | — |  |  | $ | .06 |  |  | $ | 0.19 |
Market price range of common stock |  | $18.96-22.84 |  |  | $17.70-23.25 |  |  | $19.03-23.77 |  |  | $11.07-21.90 |  |  | $11.07-23.77 |

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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 + Details
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