CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2021	Dec. 31, 2020
Preferred stock, $0.01 par value, 5,000,000 shares authorized; none issued or outstanding
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
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, $0.01 par value, 50,000,000 shares authorized; 24,678,942 and 24,391,595 shares issued on December 31, 2021 and 2020, respectively
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	50,000,000	50,000,000
Common stock, shares issued (in shares)	24,678,942	24,391,595
Treasury stock, at cost, 11,861,198 and 10,618,002 shares on December 31, 2021 and 2020, respectively
Treasury stock (in shares)	11,861,198	10,618,002