Consolidated Statements of Shareholders' Equity (unaudited) - USD ($) $ in Thousands	Total		Unearned ESOP Shares [Member]	Common Stock and Related Surplus [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]
Beginning Balance at Dec. 31, 2015	$ 143,744		$ (1,964)	$ 45,741	$ 100,423	$ (456)
Comprehensive income:
Net income	12,586				12,586
Other comprehensive income	38					38
Share-based compensation expense	150			150
Stock Issued During Period, Value, Employee Stock Ownership Plan	428		280	148
Stock Issued During Period, Value, Dividend Reinvestment Plan	75			75
Common stock cash dividends declared	(3,201)				(3,201)
Ending Balance at Sep. 30, 2016	153,820		(1,684)	46,114	109,808	(418)
Beginning Balance at Dec. 31, 2016	155,360	[1]	(1,583)	46,757	113,448	(3,262)
Comprehensive income:
Net income	9,592				9,592
Other comprehensive income	3,651					3,651
Stock Issued During Period, Value, Stock Options Exercised	12			12
Share-based compensation expense	285			285
Stock Issued During Period, Value, Employee Stock Ownership Plan	681		323	358
Stock Issued During Period, Value, Acquisitions	32,968			32,968
Stock Issued During Period, Value, Dividend Reinvestment Plan	116			116	0
Common stock cash dividends declared	(3,883)				(3,883)
Ending Balance at Sep. 30, 2017	$ 198,782		$ (1,260)	$ 80,496	$ 119,157	$ 389

[1] Derived from audited consolidated financial statements