Consolidated Statement of Changes in Shareholders' Equity (USD $) In Thousands, unless otherwise specified	Common Stock	Capital Surplus	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Total
BALANCE-beginning of period at Dec. 31, 2013	$ 208	$ 179,219	$ 19,918	$ (127)	$ 199,218
BALANCE-beginning of period (in shares) at Dec. 31, 2013	20,771
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			3,488		3,488
Net change in unrealized gains and losses on available-for-sale securities, net of taxes of $414, and $261 respectively, and reclassification adjustment				769	769
Issuance of common stock in connection with the exercise of stock options		76			76
Issuance of common stock in connection with the exercise of stock options (in shares)	9
Stock-based compensation expense		49			49
BALANCE-end of period at Mar. 31, 2014	208	179,344	23,406	642	203,600
BALANCE-end of period (in shares) at Mar. 31, 2014	20,780
BALANCE-beginning of period at Dec. 31, 2014	262	252,421	34,660	1,062	288,405
BALANCE-beginning of period (in shares) at Dec. 31, 2014	26,176
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			4,649		4,649
Net change in unrealized gains and losses on available-for-sale securities, net of taxes of $414, and $261 respectively, and reclassification adjustment				485	485
Issuance of common stock in connection with the exercise of stock options		2			2
Stock-based compensation expense		229			229
BALANCE-end of period at Mar. 31, 2015	$ 262	$ 252,652	$ 39,309	$ 1,547	$ 293,770
BALANCE-end of period (in shares) at Mar. 31, 2015	26,176