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Quarterly Financial Data (Unaudited) (Tables) | 12 Months Ended
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Mar. 31, 2020
Quarterly Financial Information Disclosure [Abstract] |
Summary of Company's Unaudited Quarterly Results | A capsule summary of the Company's unaudited quarterly results for fiscal 2020 and fiscal 2019 is presented below:
|  | 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 |
|  | First |  |  | Second |  |  | Third |  |  | Fourth |  |  | Total |
Year ended March 31, 2019 |  | Quarter |  |  | Quarter |  |  | Quarter |  |  | Quarter |  |  | Year |
Net sales |  | $ | 29,551 |  |  | $ | 21,441 |  |  | $ | 17,198 |  |  | $ | 23,641 |  |  | $ | 91,831 |
Gross profit |  |  | 7,142 |  |  |  | 6,227 |  |  |  | 3,742 |  |  |  | 4,798 |  |  |  | 21,909 |
Net (loss) income |  |  | 2,323 |  |  |  | 1,827 |  |  |  | 95 |  |  |  | (4,553 | ) | (1) |  | (308 | )
Per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net (loss) income: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | .24 |  |  | $ | .19 |  |  | $ | .01 |  |  | $ | (0.46 | ) |  | $ | (0.03 | )
Diluted |  | $ | .24 |  |  | $ | .19 |  |  | $ | .01 |  |  | $ | (0.46 | ) |  | $ | (0.03 | )
Market price range of common stock |  | $20.75-27.51 |  |  | $22.55-28.98 |  |  | $19.48-28.73 |  |  | $19.00-24.90 |  |  | $19.00-28.98 |
(1) In the fourth quarter of fiscal 2019, the Company recorded goodwill and other impairment losses of $6,449 related to the commercial nuclear utility business that was held for sale at March 31, 2019. As a result, net income in the fourth quarter of fiscal 2019 includes the impairment loss net of an income tax benefit of $1,129.

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118952077&loc=d3e1280-108306 + Details
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