Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2022	Dec. 31, 2021
Preferred stock, par value (in dollars per share)	$ 1.00	$ 1.00
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, shares authorized (in shares)	145,000,000	145,000,000
Common stock, shares issued (in shares)	95,491,405	95,371,211
Treasury stock, shares (in shares)	19,933,055	18,941,926
Common Stock
Common stock, shares issued (in shares)	95,491,405	95,371,211
Restricted Stock Awards | Common Stock
Unvested stock awards (in shares)	1,686,822	1,747,385