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Net Income Per Share | 12 Months Ended
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Dec. 31, 2021
Earnings Per Share [Abstract] |
Net Income Per Share | Note 5. Net Income Per Share Basic net income per share is computed by dividing the net income for the period by the weighted average number of common shares outstanding during the period. Diluted net income per share is computed by dividing the net income for the period by the weighted average number of shares of common stock and potentially dilutive common stock outstanding during the period. Potentially dilutive common shares include common shares issuable upon exercise of stock options, vesting of restricted stock units and performance shares, and issuances of shares under the Employee Stock Purchase Plan (the “ESPP”), which are reflected in diluted net income per share by application of the treasury stock method. Potentially dilutive common shares are excluded from the computation of diluted net income per share when their effect is anti-dilutive. Net income per share consisted of the following:
|  | Year Ended December 31, |
|  | 2021 |  |  | 2020 |  |  | 2019 |
|  | (In thousands, except per share data) |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | $ | 49,387 |  |  | $ | 58,293 |  |  | $ | 25,791 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Weighted average common shares - basic |  |  | 30,241 |  |  |  | 29,897 |  |  |  | 30,936 |
Potentially dilutive common share equivalent |  |  | 761 |  |  |  | 743 |  |  |  | 1,029 |
Weighted average common shares - dilutive |  |  | 31,002 |  |  |  | 30,640 |  |  |  | 31,965 |
Basic net income per share |  | $ | 1.63 |  |  | $ | 1.95 |  |  | $ | 0.83 |
Diluted net income per share |  | $ | 1.59 |  |  | $ | 1.90 |  |  | $ | 0.81 |
Anti-dilutive employee stock-based awards, excluded |  |  | 422 |  |  |  | 832 |  |  |  | 1,066 |

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109243012&loc=SL65017193-207537 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3630-109257 + Details
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