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Net Income per Common Share (Details) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012
Schedule of reconciliation of basic and diluted weighted average common shares outstanding |  |  |  |
Weighted average common shares outstanding - basic | 15,199,802 | 14,846,249 | 15,109,311 | 14,742,855
Dilutive common shares issuable in connection with stock plans | 154,657 | 177,331 | 190,807 | 228,812
Weighted average common shares outstanding - diluted | 15,354,459 | 15,023,580 | 15,300,118 | 14,971,667

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