CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Common stock [Member]	Preferred stock [Member]	Nonvested Restricted Stock [Member]	Additional paid-in capital [Member]	Accumulated other comprehensive loss [Member]	Retained earnings [Member]	Total
Balance at Dec. 31, 2018	$ 75		$ (741)	$ 102,625	$ (917)	$ 72,874	$ 173,916
Balance, shares at Dec. 31, 2018	7,466,481
Net income						13,249	13,249
Proceeds from exercise of stock options	$ 1			758			759
Proceeds from exercise of stock options, shares	80,742
Issuance of restricted stock			(347)	347
Issuance of restricted stock, shares	10,700
Compensation expense related to restricted stock, net of tax			201				201
Compensation expense related to stock options, net of tax				624			624
Other comprehensive income					1,105		1,105
Balance at Jun. 30, 2019	$ 76		(887)	104,354	188	86,123	189,854
Balance, shares at Jun. 30, 2019	7,557,923
Balance at Mar. 31, 2019	$ 75		(993)	103,600	(379)	78,883	181,186
Balance, shares at Mar. 31, 2019	7,505,636
Net income						7,240	7,240
Proceeds from exercise of stock options	$ 1			436			437
Proceeds from exercise of stock options, shares	52,287
Compensation expense related to restricted stock, net of tax			106				106
Compensation expense related to stock options, net of tax				318			318
Other comprehensive income					567		567
Balance at Jun. 30, 2019	$ 76		(887)	104,354	188	86,123	189,854
Balance, shares at Jun. 30, 2019	7,557,923
Balance at Dec. 31, 2019	$ 77		(803)	106,152	(298)	100,732	205,860
Balance, shares at Dec. 31, 2019	7,672,678
Net income						7,510	7,510
Proceeds from exercise of stock options				962			962
Proceeds from exercise of stock options, shares	52,466
Issuance of restricted stock			(406)	406
Issuance of restricted stock, shares	9,500
Compensation expense related to restricted stock, net of tax			208				208
Compensation expense related to stock options, net of tax				511			511
Other comprehensive income					1,103		1,103
Balance at Jun. 30, 2020	$ 77		(1,001)	108,031	805	108,242	216,154
Balance, shares at Jun. 30, 2020	7,734,644
Balance at Mar. 31, 2020	$ 77		(1,105)	107,529	410	103,564	210,475
Balance, shares at Mar. 31, 2020	7,717,582
Net income						4,678	4,678
Proceeds from exercise of stock options				222			222
Proceeds from exercise of stock options, shares	17,062
Compensation expense related to restricted stock, net of tax			104				104
Compensation expense related to stock options, net of tax				280			280
Other comprehensive income					395		395
Balance at Jun. 30, 2020	$ 77		$ (1,001)	$ 108,031	$ 805	$ 108,242	$ 216,154
Balance, shares at Jun. 30, 2020	7,734,644