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EARNINGS PER SHARE (Tables) | 9 Months Ended
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Sep. 30, 2016
Earnings Per Share [Abstract] |
Summary of Numerator and Denominators Used in Computation of Earnings Per Share | A summary of the numerator and denominators used in the computation of earnings per share follows:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2016 |  | 2015 |  | 2016 |  | 2015
Numerator: |  |  |  |  |  |  |
Net income (loss) attributable to common stockholders | $ | 7,537 |  |  | $ | 2,296 |  |  | $ | 5,125 |  |  | $ | (5,951 | )
Denominators: |  |  |  |  |  |  |
Number of shares outstanding, end of period: |  |  |  |  |  |  |
Class A common stock | 40,500 |  |  | 39,978 |  |  | 40,500 |  |  | 39,978 |
Class B common stock | 988 |  |  | 988 |  |  | 988 |  |  | 988 |
Unvested restricted stock | (109 | ) |  | (127 | ) |  | (109 | ) |  | (127 | )
Effect of weighted average shares outstanding | (2 | ) |  | (29 | ) |  | (210 | ) |  | (279 | )
Basic weighted average common shares outstanding | 41,377 |  |  | 40,810 |  |  | 41,169 |  |  | 40,560 |
Impact of potentially dilutive securities: |  |  |  |  |  |  |
Dilutive effect of stock options and other stock awards | 910 |  |  | 473 |  |  | 727 |  |  | — |
Diluted weighted average common shares outstanding | 42,287 |  |  | 41,283 |  |  | 41,896 |  |  | 40,560 |
Anti-dilutive potentially issuable shares | 322 |  |  | 665 |  |  | 322 |  |  | 2,157 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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