CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2021	Dec. 31, 2020
Statement Of Financial Position [Abstract]
Common stock par value per share	$ 0.01	$ 0.01
Common stock,number of shares authorized	90,000,000	90,000,000
Common stock,number of shares issued	6,201,770	6,083,500
Common stock,number of shares outstanding	6,123,337	6,058,024
Preferred Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	10,000,000	10,000,000
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0
Treasury Stock, Shares outstanding	78,433,000	25,476,000