| Insider | Price | Amount | Total Value | Remaining Holdings | Date | Form 4 | 
   | Officer | $18.21 | 51,075 | $930,075.75 | 0 | 2013-06-03 | Filing | 
  | Large Shareholder, Officer, Director | $18.24 | 50,000 | $912,000.00 | 533,255 | 2013-05-17 | Filing | 
  | Officer | $17.87 | 40,465 | $723,109.55 | 51,075 | 2013-05-06 | Filing | 
  | Large Shareholder, Officer, Director | $18.36 | 140,589 | $2,581,214.04 | 583,255 | 2013-03-19 | Filing | 
  | Large Shareholder, Officer, Director | $18.30 | 59,411 | $1,087,221.30 | 723,844 | 2013-03-18 | Filing | 
  | Large Shareholder, Officer, Director | $17.21 | 75,000 | $1,290,750.00 | 783,255 | 2013-03-12 | Filing | 
  | Large Shareholder, Officer, Director | $17.22 | 125,000 | $2,152,500.00 | 858,255 | 2013-03-11 | Filing | 
  | Large Shareholder, Officer, Director | $13.98 | 50,000 | $699,000.00 | 983,255 | 2012-12-20 | Filing | 
  | Large Shareholder, Officer, Director | $12.52 | 75,000 | $939,000.00 | 1,033,255 | 2012-11-27 | Filing | 
  | Large Shareholder, Officer, Director | $12.17 | 100,000 | $1,217,000.00 | 1,108,255 | 2012-11-26 | Filing | 
  | Large Shareholder, Officer, Director | $11.52 | 25,000 | $288,000.00 | 1,208,255 | 2012-11-21 | Filing | 
  | Large Shareholder, Officer, Director | $11.48 | 58,773 | $674,714.04 | 1,233,255 | 2012-11-20 | Filing | 
  | Large Shareholder, Officer, Director | $11.54 | 49,767 | $574,311.18 | 1,292,028 | 2012-11-19 | Filing | 
  | Large Shareholder, Officer, Director | $11.28 | 50,000 | $564,000.00 | 1,341,795 | 2012-11-16 | Filing | 
  | Large Shareholder, Officer, Director | $11.63 | 50,000 | $581,500.00 | 1,391,795 | 2012-11-15 | Filing | 
  | Large Shareholder, Officer, Director | $12.06 | 41,460 | $500,007.60 | 1,441,795 | 2012-11-14 | Filing | 
  | Large Shareholder, Officer, Director | $12.16 | 50,000 | $608,000.00 | 1,483,255 | 2012-11-13 | Filing | 
  | Large Shareholder, Officer, Director | $12.49 | 50,000 | $624,500.00 | 8,123,120 | 2012-11-06 | Filing | 
  | Large Shareholder | $12.49 | 50,000 | $624,500.00 | 8,123,120 | 2012-11-06 | Filing | 
  | Large Shareholder, Officer, Director | $11.64 | 1,791 | $20,847.24 | 8,173,120 | 2012-09-19 | Filing |