Common Stock	12 Months Ended
Dec. 31, 2012
Common Stock
Common Stock	14. Common Stock Share Capital In 2010, the Company issued a total 11,500,000 shares of common stock at $5.75 per share, including 1,500,000 shares of common stock pursuant to the full exercise of the underwriters’ over-allotment option. The Company received net proceeds of $61,845,306 after deducting underwriters’ commissions and offering expenses of approximately $4,279,694. In 2010, the Company issued 220,700 shares of common stock on the exercise of employee stock options with exercise prices ranging from $1.60 to $2.69 per share, for total proceeds of $409,955. In 2011, the Company issued 468,000 shares of common stock on the exercise of employee stock options with exercise price of $1.60 per share, for total proceeds of $748,800. In 2011, the Company received further cash proceeds of $3,360 on the exercise of stock options for which the shares were issued subsequent to December 31, 2011. In 2012, the Company issued 317,600 shares of common stock on the exercise of employee stock options with exercise price of $1.60 per share, for total proceeds of $508,160. The Company received further cash proceeds of $7,520 on the exercise of stock option for which the shares were issued subsequent to December 31, 2012.

14. Common Stock

Share Capital

In 2010, the Company issued a total 11,500,000 shares of common stock at $5.75 per share, including 1,500,000 shares of common stock pursuant to the full exercise of the underwriters’ over-allotment option. The Company received net proceeds of $61,845,306 after deducting underwriters’ commissions and offering expenses of approximately $4,279,694.

In 2010, the Company issued 220,700 shares of common stock on the exercise of employee stock options with exercise prices ranging from $1.60 to $2.69 per share, for total proceeds of $409,955.

In 2011, the Company issued 468,000 shares of common stock on the exercise of employee stock options with exercise price of $1.60 per share, for total proceeds of $748,800. In 2011, the Company received further cash proceeds of $3,360 on the exercise of stock options for which the shares were issued subsequent to December 31, 2011.

In 2012, the Company issued 317,600 shares of common stock on the exercise of employee stock options with exercise price of $1.60 per share, for total proceeds of $508,160. The Company received further cash proceeds of $7,520 on the exercise of stock option for which the shares were issued subsequent to December 31, 2012.