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, 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
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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income			56,036		$ 56,036
Cash Dividends Declared on Common Stock			(11,221)		(11,221)
Issuance of Common Stock		6,973			6,973
Issuance of Common Stock (in shares)	9,312
Change in Net Unrealized (Loss) Gain on Securities Available-for-Sale				6,293	6,293
Balance at Dec. 31, 2019	$ 8	$ 79,947	$ 286,036	$ 3,305	$ 369,296
Balance (in shares) at Dec. 31, 2019	793,033				793,033