Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2023

Stockholders' Equity Note [Abstract]

Rollforward of Common Stock Issued and Outstanding

The following table is a summary of changes in common shares issued and outstanding:

Year ended December 31,	2023	2022	2021
(thousands of shares)
Beginning balance	43,718	44,445	50,811
Issuance of shares	8,568	—	—
Repurchase of shares	—	(1,051)	(6,579)
Exercise of options and issuance of restricted stock awards	408	324	213
Ending balance	52,694	43,718	44,445