Fair value measurements (Tables)

6 Months Ended

Jun. 30, 2022

Fair Value Disclosures [Abstract]

Financial instruments measured at fair value on recurring basis

As of June 30, 2022, financial instruments measured at fair value on a recurring basis are summarized below:

	Level 1	Level 2	Fair value measurements
	($000 omitted)
Investments in securities:
Debt securities:
Municipal	—	32,525	32,525
Corporate	—	255,437	255,437
Foreign	—	295,134	295,134
U.S. Treasury Bonds	—	10,487	10,487
Equity securities	93,672	—	93,672
	93,672	593,583	687,255

As of December 31, 2021, financial instruments measured at fair value on a recurring basis are summarized below:

	Level 1	Level 2	Fair value measurements
	($000 omitted)
Investments in securities:
Debt securities:
Municipal	—	36,323	36,323
Corporate	—	258,102	258,102
Foreign	—	288,883	288,883
U.S. Treasury Bonds	—	6,464	6,464
Equity securities	89,442	—	89,442
	89,442	589,772	679,214