Common shares	12 Months Ended
Dec. 31, 2012
Common shares
Common shares	16. Common shares On July 5, 2012, we closed a public offering of 5,567,177 common shares, at a purchase price of $12.76 per common share and Cdn$13.10 per common share, for an aggregate net proceeds from the common share offering, after deducting the underwriting discounts and expenses, of approximately $68.5 million. We used the proceeds to fund our equity commitment in Canadian Hills. On November 5, 2011, we issued 31,500,215 common shares as part of the consideration paid in the acquisition of the Partnership. See Note 3(c) for further details. On October 19, 2011, we closed a public offering of 12,650,000 of our common shares, which included 1,650,000 common shares issued pursuant to the exercise in full of the underwriters' over-allotment option, at a purchase price of $13.00 per common share sold in U.S. dollars and Cdn$13.26 per common share sold in Canadian dollars, for net proceeds of $155.4 million. We used the net proceeds from the offering to fund a portion of the cash portion of our acquisition of the Partnership. On October 20, 2010, we completed a public offering of 6,029,000 common shares, including 784,000 common shares issued pursuant to the exercise in full of the underwriters' over-allotment option, at a price of $13.35 per common share. We received net proceeds from the common share offering, after deducting the underwriters' discounts and expenses, of approximately $75.3 million. *Shelf registrations* On August 8, 2012, we filed with the SEC an automatic shelf registration statement (Registration No. 333-183135) for the potential offering and sale of debt and equity securities. The registration statement allows for common shares and secured or unsecured debt securities in one or more series which may be senior, subordinate or junior subordinated, and which may be convertible into another security. In that we are a well-known seasoned issuer, as defined in Rule 405 under the Securities Act, the registration statement went effective immediately upon filing and we may offer and sell an unlimited amount of securities under the registration statement during the three year life of the registration statement. On August 17, 2012, we filed with relevant securities commissions or similar regulatory authorities in the provinces and territories of Canada other than the Province of Quebec a shelf registration statement for the potential offering and sale of debt and equity securities. The registration statement is effective and we may offer and sell up to Cdn$750 million of securities under the registration statement during the twenty-five month life of the registration statement.

16. Common shares

On July 5, 2012, we closed a public offering of 5,567,177 common shares, at a purchase price of $12.76 per common share and Cdn$13.10 per common share, for an aggregate net proceeds from the common share offering, after deducting the underwriting discounts and expenses, of approximately $68.5 million. We used the proceeds to fund our equity commitment in Canadian Hills.

On November 5, 2011, we issued 31,500,215 common shares as part of the consideration paid in the acquisition of the Partnership. See Note 3(c) for further details.

On October 19, 2011, we closed a public offering of 12,650,000 of our common shares, which included 1,650,000 common shares issued pursuant to the exercise in full of the underwriters' over-allotment option, at a purchase price of $13.00 per common share sold in U.S. dollars and Cdn$13.26 per common share sold in Canadian dollars, for net proceeds of $155.4 million. We used the net proceeds from the offering to fund a portion of the cash portion of our acquisition of the Partnership.

On October 20, 2010, we completed a public offering of 6,029,000 common shares, including 784,000 common shares issued pursuant to the exercise in full of the underwriters' over-allotment option, at a price of $13.35 per common share. We received net proceeds from the common share offering, after deducting the underwriters' discounts and expenses, of approximately $75.3 million.

Shelf registrations

On August 8, 2012, we filed with the SEC an automatic shelf registration statement (Registration No. 333-183135) for the potential offering and sale of debt and equity securities. The registration statement allows for common shares and secured or unsecured debt securities in one or more series which may be senior, subordinate or junior subordinated, and which may be convertible into another security. In that we are a well-known seasoned issuer, as defined in Rule 405 under the Securities Act, the registration statement went effective immediately upon filing and we may offer and sell an unlimited amount of securities under the registration statement during the three year life of the registration statement.

On August 17, 2012, we filed with relevant securities commissions or similar regulatory authorities in the provinces and territories of Canada other than the Province of Quebec a shelf registration statement for the potential offering and sale of debt and equity securities. The registration statement is effective and we may offer and sell up to Cdn$750 million of securities under the registration statement during the twenty-five month life of the registration statement.