Quarterly report pursuant to Section 13 or 15(d)

Consolidated Balance Sheets (Parenthetical)

v2.4.1.9
Consolidated Balance Sheets (Parenthetical) (USD $)
Mar. 31, 2015
Dec. 31, 2014
Statement Of Financial Position [Abstract]    
Class A preferred shares, without par value $ 0us-gaap_PreferredStockNoParValue $ 0us-gaap_PreferredStockNoParValue
Class A preferred shares, shares issued 0us-gaap_PreferredStockSharesIssued 0us-gaap_PreferredStockSharesIssued
Class A preferred shares, shares outstanding 0us-gaap_PreferredStockSharesOutstanding 0us-gaap_PreferredStockSharesOutstanding
Common shares, without par value $ 0us-gaap_CommonStockNoParValue $ 0us-gaap_CommonStockNoParValue
Common shares, Shares issued 130,048,326us-gaap_CommonStockSharesIssued 129,365,076us-gaap_CommonStockSharesIssued
Common shares, Shares outstanding 130,048,326us-gaap_CommonStockSharesOutstanding 129,365,076us-gaap_CommonStockSharesOutstanding