Consolidated Balance Sheets (unaudited) (Parenthetical) - $ / shares	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016
Common stock, par value (in dollars per share)	$ 2.50	$ 2.50	$ 2.50
Common stock, shares authorized	20,000,000	20,000,000	20,000,000
Common stock, shares issued	12,426,554	10,883,509	10,856,356
Common stock, shares outstanding	12,299,726	10,736,970	10,692,320
Preferred Stock, Par or Stated Value Per Share	$ 1	$ 1	$ 1
Preferred Stock, Shares Authorized	250,000	250,000	250,000
Employee Stock Ownership Plan (ESOP), Number of Suspense Shares	126,828	146,539	164,036