Consolidated Statements of Stockholders' Equity Parenthetical - $ / shares	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Stockholders' Equity [Abstract]
Cash Dividends Paid, per Share, in dollars per share	$ 0.250	$ 0.243
Exercised, in shares	16,721	23,003
Shares Issued Under Directors Stock Plan, in shares	554
Shares Issued Under Employee Stock Purchase Plan, in shares	3,049	4,400
Shares Issued for Dividend Reinvestment Plans - Shares	12,447	16,645
Purchase of Treasury Stock, in shares	33,970	20,105
Allocation of ESOP Stock, in shares		8,185