CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Retained Earnings	Accumulated Other Comprehensive Income (Net of Taxes)	Total
Beginning Balance, Shares at Dec. 31, 2014	8,089,615
Beginning Balance, Amount at Dec. 31, 2014	$ 57,126	$ 29,150	$ 3,371	$ 89,647
Net income		5,268		5,268
Other comprehensive income, net of tax:
Net change in unrealized gains on available-for-sale investment securities (Note 5)			(1,268)	(1,268)
Net restricted stock award activity and related compensation expense, Shares	45,023
Net restricted stock award activity and related compensation expense, Amount	$ 236			236
Retirement of common stock (Note 13), Shares	(790,989)
Retirement of common stock (Note 13), Amount	$ (7,843)			(7,843)
Stock option compensation expense	$ 35			35
Ending Balance, Shares at Dec. 31, 2015	7,343,649
Ending Balance, Amount at Dec. 31, 2015	$ 49,554	34,418	2,103	86,075
Net income		6,404		6,404
Other comprehensive income, net of tax:
Net change in unrealized gains on available-for-sale investment securities (Note 5)			(1,559)	(1,559)
Net restricted stock award activity and related compensation expense, Shares	33,474
Net restricted stock award activity and related compensation expense, Amount	$ 291			291
Retirement of common stock (Note 13), Shares	(716,897)
Retirement of common stock (Note 13), Amount	$ (7,414)			(7,414)
Stock options exercised, Shares	1,500
Stock options exercised, Amount	$ 13			13
Stock option compensation expense		40		40
Ending Balance, Shares at Dec. 31, 2016	6,661,726
Ending Balance, Amount at Dec. 31, 2016	$ 42,484	40,822	544	83,850
Net income		3,198		3,198
Disproportionate tax effect resulting from H.R.1 Tax Act (Note 2)		48	(48)
Other comprehensive income, net of tax:
Net restricted stock award activity and related compensation expense, Shares	3,486
Net restricted stock award activity and related compensation expense, Amount	$ 248	4		252
Retirement of common stock (Note 13), Shares	(574,748)
Retirement of common stock (Note 13), Amount	$ (8,641)			(8,641)
Stock options exercised, Shares	41,898
Stock options exercised, Amount	$ 351			351
Stock option compensation expense	$ 0	21		0
Ending Balance, Shares at Dec. 31, 2017	6,132,362
Ending Balance, Amount at Dec. 31, 2017	$ 34,463	$ 42,779	$ (321)	$ 76,921