Mandatorily Redeemable Preferred Shares, net - Activity Within the Preferred Share Liability (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Mandatorily Redeemable Preferred Shares [Roll Forward]
Redemption of Series A preferred shares	$ (15,625)
Net balance at period end	122,119		$ 111,591
Series A preferred shares
Mandatorily Redeemable Preferred Shares [Roll Forward]
Beginning balance, gross	174,264	$ 103,864
Partial settlement of Series A preferred share derivative liability		42,821
Interest expense recognized, including transaction cost amortization	7,932	5,561
Ending balance, gross	166,571	152,246
Less: unamortized transaction costs	(162)	(218)
Net balance at period end	166,409	$ 152,028
Series B preferred shares
Mandatorily Redeemable Preferred Shares [Roll Forward]
Beginning balance, gross	0
Issuance of Series B preferred shares	18,210
Ending balance, gross	$ 18,210