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Selected Quarterly Financial Data (Tables) | 12 Months Ended
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Mar. 31, 2020
Quarterly Financial Information Disclosure [Abstract] |
Schedule of Quarterly Financial Information | Below is selected quarterly financial data for fiscal 2020 and 2019:
|  | Three Months Ended
|  | June 30, 2019 |  | September 30, 2019 |  | December 31, 2019 |  | March 31, 2020
Net sales |  | $ | 212,712 |  |  | $ | 207,609 |  |  | $ | 199,355 |  |  | $ | 189,486 |
Gross profit |  | 75,612 |  |  | 73,493 |  |  | 67,872 |  |  | 66,209 |
Income from operations |  | 27,043 |  |  | 25,231 |  |  | 20,886 |  |  | 16,664 |
Net income (loss) |  | $ | 18,579 |  |  | $ | 16,599 |  |  | $ | 15,250 |  |  | $ | 9,244 |
Net income (loss) per share – basic |  | $ | 0.79 |  |  | $ | 0.70 |  |  | $ | 0.64 |  |  | $ | 0.39 |
Net income (loss) per share – diluted |  | $ | 0.78 |  |  | $ | 0.69 |  |  | $ | 0.63 |  |  | $ | 0.39 |
|  | Three Months Ended
|  | June 30, 2018 |  | September 30, 2018 |  | December 31, 2018 |  | March 31, 2019
Net sales |  | $ | 224,992 |  |  | $ | 217,142 |  |  | $ | 217,415 |  |  | $ | 216,733 |
Gross profit |  | 79,647 |  |  | 75,900 |  |  | 73,405 |  |  | 76,045 |
Income from operations |  | 13,503 |  |  | 24,825 |  |  | 6,646 |  |  | 24,468 |
Net income (loss) |  | $ | 7,706 |  |  | $ | 15,912 |  |  | $ | (782 | ) |  | $ | 19,741 |
Net income (loss) per share – basic |  | $ | 0.33 |  |  | $ | 0.68 |  |  | $ | (0.03 | ) |  | $ | 0.84 |
Net income (loss) per share – diluted |  | $ | 0.33 |  |  | $ | 0.67 |  |  | $ | (0.03 | ) |  | $ | 0.83 |

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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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