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Earnings Per Share | 9 Months Ended
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Sep. 30, 2018
Earnings Per Share [Abstract] |
Earnings Per Share | 15. Earnings Per Share We use the two-class method of calculating EPS as our non-vested RSAs have non-forfeitable rights to dividends and, accordingly, represent a participating security. The two-class method is an earnings allocation method under which EPS is calculated for each class of common stock and participating security considering both dividends declared (or accumulated) and participation rights in undistributed earnings as if all such earnings had been distributed during the period. We use the treasury stock method to calculate the dilutive effect of our RSUs and PSUs as these awards do not have participating rights. The following table sets forth the computation of basic and diluted EPS for the three and nine months ended September 30, 2018 and 2017 (in thousands, except share and per share information):
﻿ |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  | Three Months Ended |  | Nine months ended
﻿ |  | September 30, |  | September 30,
﻿ |  | 2018 |  | 2017 |  | 2018 |  | 2017
﻿Numerator |  |  |  |  |  |  |  |  |  |  |  |
﻿Net income |  | $ | 17,048 |  | $ | 9,470 |  | $ | 70,261 |  | $ | 33,100
﻿Less: Undistributed earnings allocated to participating securities |  |  | — |  |  | (52) |  |  | (58) |  |  | (289)
﻿Net income allocable to common stockholders |  | $ | 17,048 |  | $ | 9,418 |  | $ | 70,203 |  | $ | 32,811
﻿Denominator |  |  |  |  |  |  |  |  |  |  |  |
﻿Weighted average common shares outstanding - basic |  |  | 30,232,376 |  |  | 25,445,552 |  |  | 29,885,858 |  |  | 23,038,390
﻿Dilutive effect of restricted stock units |  |  | 322,505 |  |  | 280,585 |  |  | 303,200 |  |  | 236,930
﻿Weighted average common shares outstanding - diluted |  |  | 30,554,881 |  |  | 25,726,137 |  |  | 30,189,058 |  |  | 23,275,320
﻿Earnings per share: |  |  |  |  |  |  |  |  |  |  |  |
﻿Basic |  | $ | 0.56 |  | $ | 0.37 |  | $ | 2.35 |  | $ | 1.42
﻿Diluted |  | $ | 0.56 |  | $ | 0.37 |  | $ | 2.33 |  | $ | 1.41
﻿ Stock-based awards are excluded from the calculation of diluted EPS in the event they are subject to unsatisfied performance conditions or are antidilutive. We excluded 0.3 million common unit equivalents from diluted earnings per share during the three and nine months ended September 30, 2018 related to the PSU’s granted during the periods. We did no t have any common unit equivalents to exclude from diluted earnings per share during the three and nine months ended September 30, 2017.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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