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Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Real estate development $ 310,439 $ 297,581
Common stock, par value per share (in dollars per share) $ 0.50 $ 0.50
Common stock, authorized shares (in shares) 30,000,000 30,000,000
Common stock, issued shares (in shares) 26,276,830 26,096,797
Common stock, outstanding shares (in shares) 26,276,830 26,096,797
Centennial Founders, LLC    
Real estate development $ 108,600 $ 104,491