Common Shares - Summary Of Phantom Units Activity (Details) - $ / shares	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Earnings Per Share, Basic	$ 0.05	$ (0.02)	$ 0.03	$ (0.08)
Phantom Share Units (PSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested, Number of units, beginning of period (in shares)			144,000	265,000	265,000
Cancelled/forfeited, Number of units (in shares)					(32,667)
Vested, net of shares withheld, Number of units (in shares)			(72,000)		(88,333)
Unvested, Number of units, end of period (in shares)	72,000		72,000		144,000
Weighted average remaining contractual term			9 months		1 year