Schedule I - Condensed Statements of Cash Flows (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash Flows From Operating Activities:
Net income/loss	$ 291,190	$ 256,513	$ (312,321)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Equity in net (income) loss of subsidiary	(291,190)	(256,513)	312,321
Net cash provided by (used in) operating activities	564,588	503,012	(120,729)
Cash Flows From Investing Activities:
Net cash used in investing activities	(200,705)	(128,854)	(109,175)
Cash Flows From Financing Activities:
Exercise of stock options	3,028	5,907	2,920
Net cash (used in) provided by financing activities	(726,049)	(364,897)	624,204
Change in Cash and Cash Equivalents, including Restricted Cash	(362,166)	9,261	394,300
Cash and Cash Equivalents, including Restricted Cash—Beginning of year	444,486	435,225	40,925
Cash and Cash Equivalents, including Restricted Cash—End of year	82,320	444,486	435,225
Parent Company [Member]
Cash Flows From Operating Activities:
Net income/loss	291,190	256,513	(312,321)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Equity in net (income) loss of subsidiary	(291,190)	(256,513)	312,321
Cash Flows From Investing Activities:
Dividends forfeited from subsidiary- return of capital, net of forfeitures			(1)
Capital contributed to subsidiary from exercises of stock options	(3,431)	(5,955)	(2,621)
Net cash used in investing activities	(3,431)	(5,955)	(2,622)
Cash Flows From Financing Activities:
Exercise of stock options	3,028	5,907	2,920
Dividends paid to common stockholders			(12)
Net cash (used in) provided by financing activities	3,028	5,907	2,908
Change in Cash and Cash Equivalents, including Restricted Cash	(403)	(48)	286
Cash and Cash Equivalents, including Restricted Cash—Beginning of year	407	455	169
Cash and Cash Equivalents, including Restricted Cash—End of year	4	407	455
Supplemental Disclosures of Noncash Financing Activities
Dividends from subsidiary- return of capital, for purchase of treasury stock	693,623	215,749	12,406
Parent Company [Member] | Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Cash Flows From Operating Activities:
Net income/loss	291,190	256,513	(312,321)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Equity in net (income) loss of subsidiary	$ (291,190)	$ (256,513)	$ 312,321