Common Shares (Details 2) (USD $)			0 Months Ended
	Dec. 31, 2013	Jul. 16, 2012 Series A Preferred Stock	Jul. 16, 2012 Series A Preferred Stock Rights	Jul. 16, 2012 Series A Preferred Stock Rights Maximum
Shareholder Rights Plan
Number of purchase rights issued per Common Share			$ 1
Number of shares each Right entitled to purchase			0.001
Par value (in dollars per share)	$ 0.001	$ 0.001
Exercise price (in dollars per share)			$ 80.00
Minimum percentage holding of common shares for exercising preferred share purchase rights			10.00%
Conditions of rights issuance, number of days following announcement			10 days	20 days
Conditions of rights issuance, business days following Commencement or Announcement to make an offer			10 days