| Schedule of basic and diluted income per share |
Basic and diluted net income per share were computed as follows, in thousands, except share and per share amounts:
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Three Months Ended September 30,
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Nine Months Ended September 30,
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2018
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2017
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2018
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2017
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Net income - basic and diluted
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$
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42,658
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$
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31,393
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$
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96,198
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$
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53,142
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Weighted average number of common shares outstanding - basic
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35,091,388
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35,022,113
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35,084,694
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36,203,497
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Dilutive effect of common stock equivalents:
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RSAs with service-based conditions
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135,347
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216,724
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161,474
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215,069
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RSAs with market-based conditions
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252,278
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202,292
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245,127
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174,559
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RSAs with performance-based conditions
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23,875
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—
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7,958
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—
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Stock options
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286,495
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296,500
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316,104
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249,019
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Weighted average number of common shares outstanding - diluted
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35,789,383
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35,737,629
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35,815,357
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36,842,144
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Basic net income per common share
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$
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1.22
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$
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0.90
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$
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2.74
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$
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1.47
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Diluted net income per common share
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$
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1.19
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$
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0.88
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$
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2.69
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$
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1.44
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| Summary of shares excluded from the calculation of diluted income per share because their effect would have been anti-dilutive |
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Three Months Ended September 30,
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Nine Months Ended September 30,
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2018
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2017
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2018
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2017
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Anti-dilutive common stock equivalents:
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RSAs with service-based conditions
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9,775
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—
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3,466
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610
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RSAs with market-based conditions
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—
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—
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—
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—
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RSAs with performance-based conditions
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—
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—
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—
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—
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Stock options
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76,030
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5,010
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62,528
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59,298
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Total anti-dilutive common stock equivalents
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85,805
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5,010
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65,994
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59,908
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