Consolidated Statements of Shareholders' Equity (unaudited) - USD ($) $ in Thousands	Total		Common Stock and Related Surplus [Member]	Unearned ESOP Shares [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]
Beginning Balance at Dec. 31, 2018	$ 219,830		$ 80,431	$ (939)	$ 141,354	$ (1,016)
Comprehensive income:
Net income	7,092				7,092
Other comprehensive income	2,130					2,130
Share-based compensation expense	132		132
Stock Issued During Period, Value, Employee Stock Ownership Plan	120		65	55
Stock Repurchased and Retired During Period, Value	(2,876)		(2,876)
Stock Issued During Period, Value, Acquisitions	8,918		8,918
Stock Issued During Period, Value, Dividend Reinvestment Plan	59		59
Common stock cash dividends declared	(1,775)				(1,775)
Ending Balance at Mar. 31, 2019	233,630		86,729	(884)	146,671	1,114
Beginning Balance at Dec. 31, 2019	247,764	[1]	80,084	(714)	165,859	2,535
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative Effect on Retained Earnings, Net of Tax	(6,756)				(6,756)
Comprehensive income:
Net income	4,506				4,506
Other comprehensive income	(1,704)					(1,704)
Share-based compensation expense	162		162
Stock Issued During Period, Value, Employee Stock Ownership Plan	131		70	61
Stock Repurchased and Retired During Period, Value	(1,282)		(1,282)
Stock Issued During Period, Value, Acquisitions	15,354		15,354
Stock Issued During Period, Value, Dividend Reinvestment Plan	51		51
Common stock cash dividends declared	(2,201)				(2,201)
Ending Balance at Mar. 31, 2020	$ 256,025		$ 94,439	$ (653)	$ 161,408	$ 831

[1] Derived from audited consolidated financial statements