Consolidated Balance Sheets (unaudited) (Parenthetical) - $ / shares	Mar. 31, 2019	Dec. 31, 2018
Common stock, par value (in dollars per share)	$ 2.50	$ 2.50
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	12,743,367	12,399,887
Common stock, shares outstanding	12,661,528	12,312,933
Preferred Stock, Par or Stated Value Per Share	$ 1	$ 1
Preferred Stock, Shares Authorized	250,000	250,000
Employee Stock Ownership Plan (ESOP), Number of Suspense Shares	81,839	86,954