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, 2014	$ 8	$ 77,804	$ 152,833	$ 2,533	$ 233,178
Balance (in shares) at Dec. 31, 2014	784,082
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income			27,392		27,392
Cash Dividends Declared on Common Stock			(10,157)		(10,157)
Issuance of Common Stock		3,360			3,360
Issuance of Common Stock (in shares)	6,705
Change in Net Unrealized (Loss) Gain on Securities Available-for-Sale				(1,938)	(1,938)
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				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				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				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