Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Increase (Decrease) in Stockholders' Equity
Other comprehensive income (loss), tax	$ (507)	$ 179	$ (412)
Cash dividends (in dollars per share)	$ 0.485	$ 0.48	$ 0.48
Issuance of common stock - unvested shares (in shares)	7,956	7,333	3,984
Issuance of common stock - vested shares (in shares)	4,149	4,194	5,139
Repurchase of common stock (in shares)	960	368	382
Forfieture of common stock - unvested shares (in Shares)	1,210