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Subsequent Events (Detail) - USD ($) shares in Thousands, $ in Thousands	1 Months Ended			3 Months Ended		6 Months Ended
	Aug. 04, 2022	Jul. 31, 2022	Apr. 30, 2022	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Subsequent events
Loss on early extinguishment of debt				$ 116,563	$ 0	$ 117,991	$ 0
3.125% Senior Convertible Notes
Subsequent events
Stated interest rate				3.125%	3.125%	3.125%	3.125%
3.125% Senior Convertible Notes | Unsecured notes
Subsequent events
Aggregate principal of debt converted and retired			$ 194,000
Stated interest rate			3.125%	3.125%	3.125%	3.125%	3.125%	3.125%
Common shares issued in in conversion of convertible notes			13,750
Payments to debt holders in conjunction with the conversion and retirement of debt			$ 14,000
Net increase in shareholders equity on conversion of convertible notes			180,600
Loss on early extinguishment of debt			$ 118,100
Subsequent Events | SAFE
Subsequent events
Proceeds from sale of ground lease		$ 36,000
Subsequent Events | 3.125% Senior Convertible Notes | Unsecured notes
Subsequent events
Aggregate principal of debt converted and retired	$ 47,900
Stated interest rate	3.125%
Common shares issued in in conversion of convertible notes	2,000
Payments to debt holders in conjunction with the conversion and retirement of debt	$ 24,300
Net increase in shareholders equity on conversion of convertible notes	24,200
Loss on early extinguishment of debt	$ 6,100

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