Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Consolidated Statements of Changes in Stockholders' Equity [Abstract]
Restricted stock compensation expense, shares	0	4,012	0	4,908
Exercise of stock options, shares		1,372		2,338
Cash dividends- common stock per share	$ 0.07	$ 0.07	$ 0.14	$ 0.14
Non-cash funding of 401(k), shares	2,335	2,428	6,266	5,658
Non-cash funding of deferred comp. plan, shares	1,371	1,397	3,110	2,877