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EARNINGS PER SHARE | 12 Months Ended
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Dec. 31, 2018
Earnings Per Share [Abstract] |
EARNINGS PER SHARE | EARNINGS PER SHARE A summary of the numerator and denominators used in the computation of earnings per share is as follows:
| Fiscal Year Ended December 31,
| 2018 |  | 2017 |  | 2016
Numerator: |  |  |  |  |
Net income (loss) attributable to common stockholders | $ | 6,420 |  |  | $ | (21,799 | ) |  | $ | (6,849 | )
Denominator: |  |  |  |  |
Class A common stock | 41,944 |  |  | 41,298 |  |  | 40,572 |
Class B common stock | 988 |  |  | 988 |  |  | 988 |
Shares to be issued - acquisition | 103 |  |  | — |  |  | — |
Unvested restricted stock | (9 | ) |  | (38 | ) |  | (88 | )
Effect of weighted average shares outstanding | (338 | ) |  | (402 | ) |  | (239 | )
Basic weighted average common shares outstanding | 42,688 |  |  | 41,846 |  |  | 41,233 |
Impact of potentially dilutive securities: |  |  |  |  |
Dilutive effect of stock options and stock awards | 1,480 |  |  | — |  |  | — |
Diluted weighted average common shares outstanding | 44,168 |  |  | 41,846 |  |  | 41,233 |
Antidilutive potentially issuable shares | 2 |  |  | 2,219 |  |  | 2,442 |

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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