Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income, Net [Member]	Total
Balance at Dec. 31, 2016	$ 8	$ 90,671	$ 189,313	$ (11)	$ 279,981
Balance (in shares) at Dec. 31, 2016	807,329
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income		0	24,589	0	24,589
Cash Dividends Declared on Common Stock	$ 0	0	(5,459)	0	(5,459)
Issuance of Common Stock	$ 0	2,953	0	0	2,953
Issuance of Common Stock (in shares)	4,975
Change in Net Unrealized Loss on Securities Available-for-Sale, Net of Tax	$ 0	0	0	565	565
Balance at Sep. 30, 2017	$ 8	93,624	208,443	554	$ 302,629
Balance (in shares) at Sep. 30, 2017	812,304				812,304
Balance at Dec. 31, 2017	$ 8	93,624	206,845	(817)	$ 299,660
Balance (in shares) at Dec. 31, 2017	812,304				812,304
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income		0	32,491	0	$ 32,491
Cash Dividends Declared on Common Stock	$ 0	0	(5,665)	0	(5,665)
Repurchase of Common Stock	$ 0	(31,152)	0	0	(31,152)
Repurchase of Common Stock (in shares)	(44,503)
Issuance of Common Stock	$ 0	10,502	0	0	10,502
Issuance of Common Stock (in shares)	15,920
Change in Net Unrealized Loss on Securities Available-for-Sale, Net of Tax	$ 0	0	0	(5,745)	(5,745)
Balance at Sep. 30, 2018	$ 8	$ 72,974	$ 233,671	$ (6,562)	$ 300,091
Balance (in shares) at Sep. 30, 2018	783,721				783,721