Common Shares - Anti-dilutive (Details) - shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive shares outstanding	1,319,149	1,144,500
Restricted Stock Units (RSUs)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive shares outstanding	1,002,670	1,567,907
Warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive shares outstanding	6,514,625	6,514,625