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Earnings Per Common Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012
Earnings Per Common Share |  |  |  |
Number of shares awarded under Pay-for-Performance program included in diluted weighted average number of shares | 100,000 | 100,000 | 100,000 | 100,000
Underlying number of shares awarded under Pay-for-Performance program included in calculation of diluted weighted average number of shares | 200,000 | 200,000 | 200,000 | 200,000
Number of shares awarded under Pay-for-Performance program not included in diluted weighted average number of shares | 100,000 | 100,000 | 100,000 | 100,000
Outstanding options at the end of the period (in shares) | 0 | 0 | 0 | 0
Numerator for basic and diluted earnings per share: |  |  |  |
Income from continuing operations | $ 3,228 | $ 3,001 | $ 14,429 | $ 9,228
Less net income attributable to noncontrolling interests | (17) | (6) | (32) | (13)
Less earnings allocated to unvested shares | (165) |  | (494) |
Income from continuing operations available for common stockholders | 3,046 | 2,995 | 13,903 | 9,215
Discontinued operations |  | 15,419 |  | 18,171
Net income available for common stockholders, basic | 3,046 | 18,414 | 13,903 | 27,386
Net income available for common stockholders, diluted | 3,046 | 18,414 | 13,903 | 27,386
Denominator for basic earnings per share: |  |  |  |
Weighted average common shares | 15,093,000 | 14,443,000 | 14,871,000 | 14,370,000
Weighted average unvested restricted stock shares |  | 408,000 |  | 412,000
Denominator for basic earnings per share (in shares) | 15,093,000 | 14,851,000 | 14,871,000 | 14,782,000
Effect of diluted securities: |  |  |  |
Restricted stock units awarded under Pay-for-Performance program (in shares) | 100,000 | 100,000 | 100,000 | 100,000
Denominator for diluted earnings per share - weighted average shares | 15,193,000 | 14,951,000 | 14,971,000 | 14,882,000
Earnings per common share, basic (in dollars per share) | $ 0.20 | $ 1.24 | $ 0.93 | $ 1.85
Earnings per common share, diluted (in dollars per share) | $ 0.20 | $ 1.23 | $ 0.93 | $ 1.84
Amounts attributable to One Liberty Properties, Inc. common stockholders, net of noncontrolling interests: |  |  |  |
Income from continuing operations | 3,211 | 2,995 | 14,397 | 9,215
Income from discontinued operations |  | 15,419 |  | 18,171
Net income attributable to One Liberty Properties, Inc. | $ 3,211 | $ 18,414 | $ 14,397 | $ 27,386

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