Consolidated Statements of Comprehensive Income - USD ($)		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income: Before Tax Amount		$ 5,552,000	$ 5,821,000
Net Income: Tax Effect		50,000	14,000
Net income		5,602,000	5,835,000
Other comprehensive income:
Unrealized holding gains arising during the period : Before Tax Amount		4,717,000	3,961,000
Unrealized holding gains arising during the period : Tax Effect		(990,000)	(832,000)
Unrealized holding gains arising during the period : Net of Tax Amount		3,727,000	3,129,000
Less reclassification adjustment for gains (losses) included in net income for sales of debt securities: Before Tax Amount	[1],[2]	(855,000)	43,000
Less reclassification adjustment for gains (losses) included in net income for sales of debt securities: Tax Effect	[1],[2]	180,000	(9,000)
Less reclassification adjustment for gains (losses) included in net income for sales of debt securities: Net of Tax Amount	[1],[2]	(675,000)	34,000
Unrealized gains (losses) on cash flow hedge, Before Tax Amount		(48,000)	0
Unrealized gains (losses) on cash flow hedge, Tax Effect		10,000	0
Unrealized gains (losses) on cash flow hedge, Net-of-Tax		(38,000)	0
Less reclassification adjustment for gains (losses) included in net income, Before Tax Amount	[2],[3]	(9,000)	0
Less reclassification adjustment for gains (losses) included in net income, Tax Effect	[2],[3]	2,000	0
Less reclassification adjustment for gains (losses) included in net income, Net-of-Tax	[2],[3]	(7,000)	0
Pension net loss (gain): Pre-Tax Amount		0	2,399,000
Pension net loss (gain): Tax Effect		0	(504,000)
Pension net loss (gain): Net-of-Tax Amount		0	1,895,000
Pension loss due to change in assumptions: Pre-Tax Amount		0	(1,478,000)
Pension loss due to change in assumptions: Tax Effect		0	310,000
Pension (loss) gain due to change in assumptions: Net-of-Tax Amount		0	(1,168,000)
Amortization of pension net actuarial loss: Before Tax Amount	[2],[4]	0	1,276,000
Amortization of pension net actuarial loss: Tax Effect	[2],[4]	0	(268,000)
Amortization of pension net actuarial cost: Net of Tax Amount	[2],[4]	0	1,008,000
Other comprehensive income (loss): Before Tax Amount		3,805,000	6,201,000
Other comprehensive income (loss): Tax Effect		(798,000)	(1,303,000)
Net current period other comprehensive income (loss)		3,007,000	4,898,000
Total comprehensive income: Before Tax Amount		9,357,000	12,022,000
Total comprehensive income: Tax Effect		(748,000)	(1,289,000)
Total comprehensive income: Net of Tax Amount		$ 8,609,000	$ 10,733,000

[1] Amounts are included in gain (loss) on sales and calls of securities on the Consolidated Statements of Income as a separate element within total non-interest income.

[2] Income tax amounts are included in the income tax (benefit) provision on the Consolidated Statements of Income.

[3] Amounts are included in interest expense on short-term borrowings and repurchase agreements on the consolidated statements of income.

[4] Amounts are included in the computation of net periodic benefit cost and are included in employee benefits expense on the Consolidated Statements of Income as a separate element within total non-interest expense.