Investments in Equity Securities (Tables)

3 Months Ended

Mar. 31, 2023

Equity securities

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

Schedule of Investments in Equity Securities

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

(In thousands)	Cost		Gross Unrealized				Fair Value		Carrying Value
			Gains		Losses
March 31, 2023
Common stocks	$	883,234	$	227,947	$	(53,582)	$	1,057,599	$	1,057,599
Preferred stocks	282,750		1,526		(61,920)		222,356		222,356
Total	$	1,165,984	$	229,473	$	(115,502)	$	1,279,955	$	1,279,955
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