Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Redeemable Noncontrolling Interests in Consolidated Entities/Temporary Stockholders' Equity [Member]
Balance, beginning of period at Dec. 31, 2020		$ 393		$ 1,705,786	$ 129,706
Repurchases of common stock			$ (5,966)
Share-based compensation			14,105
Net issuance of common stock		1	(1)
Net income (loss)	$ 97,872			97,872
Dividends				(18,620)
Change in foreign currency translation adjustment,net of income taxes					4,992
Change in net unrealized investment gains (losses) during the period, net of income taxes					(51,075)
Balance, end of period at Mar. 31, 2021	$ 1,877,193	394	8,138	1,785,038	83,623
Dividends declared per share	$ 0.47
Balance, beginning of period at Dec. 31, 2021	$ 2,082,512	394	5,224	2,004,506	72,388	$ 7,271
Repurchases of common stock		(7)	(20,043)	(83,813)
Share-based compensation			14,820
Net issuance of common stock		1	$ (1)
Net income (loss)	81,419			81,419
Dividends				(21,645)
Change in foreign currency translation adjustment,net of income taxes					3,158
Change in net unrealized investment gains (losses) during the period, net of income taxes					(130,216)
Net income (loss) attributable to noncontrolling interests	(2,655)					(2,655)
Balance, end of period at Mar. 31, 2022	$ 1,926,185	$ 388		$ 1,980,467	$ (54,670)	$ 4,616
Dividends declared per share	$ 0.55