CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($)	Common Stock [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Beginning Balance, Shares at Dec. 31, 2017	6,132,362
Beginning Balance at Dec. 31, 2017	$ 34,463,000	$ 42,779,000	$ (321,000)	$ 76,921,000
Net income		4,900,000		4,900,000
Other comprehensive income, net of tax (Note 5)			(1,555,000)	(1,555,000)
Payment of cash dividend, $0.28 per share (Note 14)		(1,188,000)		(1,188,000)
Retirement of common stock (Note 13)	(4,773,000)			$ (4,773,000)
Retirement of common stock, Shares				(306,618)
Net restricted stock award activity and related compensation expense (Note 13)	$ 196,000	3,000		$ 199,000
Net restricted stock award activity and related compensation expense, Shares	11,374
Stock options exercised (Note 13)	$ 189,000			189,000
Stock options exercised, Shares	21,310
Stock option compensation expense (Note 13)	$ 28,000			28,000
Ending Balance, Shares at Dec. 31, 2018	5,858,428
Ending Balance at Dec. 31, 2018	$ 30,103,000	46,494,000	(1,876,000)	74,721,000
Net income		5,500,000		5,500,000
Other comprehensive income, net of tax (Note 5)			3,668,000	3,668,000
Payment of cash dividend, $0.28 per share (Note 14)		(1,413,000)		(1,413,000)
Net restricted stock award activity and related compensation expense (Note 13)	$ 324,000			324,000
Net restricted stock award activity and related compensation expense, Shares	29,310
Stock options exercised (Note 13)	$ 95,000			95,000
Stock options exercised, Shares	11,140
Stock option compensation expense (Note 13)	$ 14,000			14,000
Ending Balance, Shares at Dec. 31, 2019	5,898,878
Ending Balance at Dec. 31, 2019	$ 30,536,000	50,581,000	1,792,000	82,909,000
Net income		7,055,000		7,055,000
Other comprehensive income, net of tax (Note 5)			4,364,000	4,364,000
Payment of cash dividend, $0.28 per share (Note 14)		(1,658,000)		(1,658,000)
Net restricted stock award activity and related compensation expense (Note 13)	$ 421,000			$ 421,000
Net restricted stock award activity and related compensation expense, Shares	38,651
Stock options exercised, Shares
Stock option compensation expense (Note 13)	$ 4,000			$ 4,000
Ending Balance, Shares at Dec. 31, 2020	5,937,529
Ending Balance at Dec. 31, 2020	$ 30,961	$ 55,978,000	$ 6,156,000	$ 93,095,000