Weighted average common shares outstanding - basic

12,234,599

11,241,183

12,130,480

10,998,456

Potentially dilutive securities:

Unvested shares of restricted stock and employee stock options

95,681

455,386

113,809

394,161

Weighted average common shares and common share equivalents outstanding - diluted

12,330,280

11,696,569

12,244,289

11,392,617

Average number of potentially dilutive securities excluded from calculation because their effect was anti-dilutive during the period

599,276

96,661

516,930

125,545