Quarterly report pursuant to Section 13 or 15(d)

Consolidated Balance Sheets (Parenthetical)

v3.19.1
Consolidated Balance Sheets (Parenthetical) - USD ($)
Mar. 31, 2019
Dec. 31, 2018
Statement Of Financial Position [Abstract]    
Property, buildings and equipment, accumulated depreciation $ 45,402,205 $ 43,060,083
Finite-lived intangible assets, accumulated amortization $ 339,676 $ 324,634
Preferred stock, par value (usd per share) $ 1 $ 1
Preferred stock, shares authorized 5,000,000 5,000,000
Preferred stock, shares issued 0 0
Common stock, par value (usd per share) $ 0.10 $ 0.10
Common stock, shares authorized 40,000,000 40,000,000
Common stock, shares issued 27,813,772 27,813,772
Common stock, shares outstanding 24,522,534 24,590,243
Treasury stock, shares 3,291,238 3,223,529