Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Total
Balance at Dec. 31, 2015	$ 8	$ 81,164	$ 170,068	$ 595	$ 251,835
Balance (in shares) at Dec. 31, 2015	790,787
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income			29,723		29,723
Cash Dividends Declared on Common Stock			(10,478)		(10,478)
Issuance of Common Stock		9,507			9,507
Issuance of Common Stock (in shares)	16,542
Change in Net Unrealized (Loss) Gain on Securities Available-for-Sale				(606)	(606)
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			28,370		28,370
Cash Dividends Declared on Common Stock			(10,982)		(10,982)
Issuance of Common Stock		2,953			2,953
Issuance of Common Stock (in shares)	4,975
Tax Adjustment of Available-for-Sale Securities Reclassed from AOCI			144	(144)	0
Change in Net Unrealized (Loss) Gain on Securities Available-for-Sale				(662)	(662)
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			45,527		$ 45,527
Cash Dividends Declared on Common Stock			(11,151)		(11,151)
Repurchase of Common Stock		(31,152)			(31,152)
Repurchase of Common Stock (in shares)	(44,503)
Issuance of Common Stock		10,502			10,502
Issuance of Common Stock (in shares)	15,920
Change in Net Unrealized (Loss) Gain on Securities Available-for-Sale				(2,171)	(2,171)
Balance at Dec. 31, 2018	$ 8	$ 72,974	$ 241,221	$ (2,988)	$ 311,215
Balance (in shares) at Dec. 31, 2018	783,721				783,721