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CONDENSED BALANCE SHEETS (Parenthetical) - $ / shares
Jun. 30, 2022
Dec. 31, 2021
Statement of Financial Position [Abstract]    
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock authorized (in dollars per share) 140,000,000 140,000,000
Common stock issued (in shares) 53,875,375 53,659,643
Common stock outstanding (in shares) 51,653,534 51,437,802
Preferred stock, par value (in dollars per share) $ 0.01 $ 0.01
Preferred stock authorized (in shares) 10,000,000 10,000,000
Preferred stock issued (in shares) 0 0
Preferred stock outstanding (in shares) 0 0
Treasury stock (in shares) 2,221,841 2,221,841