Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2022	Dec. 31, 2021
Statement Of Financial Position [Abstract]
Common stock, shares par value	$ 0.06	$ 0.06
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares issued	13,637,000	13,658,000
Common stock, shares outstanding	13,637,000	13,658,000
Treasury stock, shares	333,000	387,000