Investments in Equity Securities (Tables)

6 Months Ended

Jun. 30, 2023

Equity securities

Debt Securities, Available-for-sale [Line Items]

Schedule of Investments in Equity Securities

At June 30, 2023 and December 31, 2022, investments in equity securities were as follows:

(In thousands)	Cost		Gross Unrealized				Fair Value		Carrying Value
			Gains		Losses
June 30, 2023
Common stocks	$	823,504	$	235,699	$	(44,383)	$	1,014,820	$	1,014,820
Preferred stocks	280,977		2,093		(58,178)		224,892		224,892
Total	$	1,104,481	$	237,792	$	(102,561)	$	1,239,712	$	1,239,712
December 31, 2022
Common stocks	$	855,987	$	192,165	$	(65,401)	$	982,751	$	982,751
Preferred stocks	259,341		1,053		(57,251)		203,143		203,143
Total	$	1,115,328	$	193,218	$	(122,652)	$	1,185,894	$	1,185,894