Unaudited Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balances at at Dec. 31, 2017	$ 10,232	$ 144,172	$ 27,175	$ (1,644)	$ 179,935
Comprehensive Income:
Net Income			3,108		3,108
Other Comprehensive Income (Loss)				(2,741)	(2,741)
Cash Dividends Declared			(614)		(614)
Stock Based Compensation Cost	44	344			388
Surrendered Shares of Stock Based Compensation	(4)	(75)	(3)		(82)
Balances at at Mar. 31, 2018	10,272	144,441	29,666	(4,385)	179,994
Balances at at Dec. 31, 2017	10,232	144,172	27,175	(1,644)	179,935
Balances at at Dec. 31, 2018	13,213	212,332	37,982	(3,469)	260,058
Comprehensive Income:
Net Income			5,659		5,659
Other Comprehensive Income (Loss)				3,139	3,139
Cash Dividends Declared			(1,065)		(1,065)
Stock Based Compensation Cost	44	249			293
Surrendered Shares of Stock Based Compensation	(10)	(198)			(208)
Balances at at Mar. 31, 2019	13,361	213,537	42,576	(330)	269,144
Balances at at Dec. 31, 2018	13,213	212,332	37,982	(3,469)	260,058
Comprehensive Income:
Stock Issuance	$ 114	$ 1,154			$ 1,268