Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Restricted stock award grants (in shares)			39,790	37,708
Purchase of treasury stock (in shares)	40,000		40,000	10,769
Forfeiture of restricted stock award grants (in shares)		130		130
Cash dividends declared (in dollars per share)	$ 0.17	$ 0.165	$ 0.34	$ 0.33
Restricted Stock
Purchase of treasury stock (in shares)	1,388	79	9,088	6,119