Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income: Before Tax Amount		$ 1,662	$ 1,931	$ 2,541	$ 3,334
Net Income: Tax Effect		(57)	(86)	102	(76)
Net income: Net of Tax Amount		1,605	1,845	2,643	3,258
Other comprehensive income (loss):
Unrealized holding gains (losses) arising during the period : Before Tax Amount		(331)	1,722	4,617	3,515
Unrealized holding gains (losses) arising during the period : Tax Effect		69	(361)	(970)	(738)
Unrealized holding gains (losses) arising during the period : Net of Tax Amount		(262)	1,361	3,647	2,777
Less reclassification adjustment for gains (losses) included in net income for sales of debt securities: Before Tax Amount	[1],[2]	(551)	0	(562)	56
Less reclassification adjustment for gains (losses) included in net income for sales of debt securities: Tax Effect	[1],[2]	116	0	118	(12)
Less reclassification adjustment for gains (losses) included in net income for sales of debt securities: Net of Tax Amount	[1],[2]	(435)	0	(444)	44
Unrealized losses on cash flow hedge, Before Tax Amount		(184)	0	(184)	0
Unrealized losses on cash flow hedge, Tax Effect		39	0	39	0
Unrealized losses on cash flow hedge, Net-of-Tax		(145)	0	(145)	0
Less reclassification adjustment for gains included in net income, Before Tax Amount	[2],[3]	(22)	0	(22)	0
Less reclassification adjustment for gains included in net income, Tax Effect	[2],[3]	4	0	4	0
Less reclassification adjustment for gains included in net income, Net-of-Tax	[2],[3]	(18)	0	(18)	0
Pension net loss (gain): Pre-Tax Amount		0	2,634	0	2,634
Pension net loss (gain): Tax Effect		0	(553)	0	(553)
Pension net loss (gain): Net-of-Tax Amount		0	2,081	0	2,081
Pension (loss) gain due to change in assumptions: Pre-Tax Amount		0	(1,478)	0	(1,478)
Pension (loss) gain due to change in assumptions: Tax Effect		0	310	0	310
Pension (loss) gain due to change in assumptions: Net-of-Tax Amount		0	(1,168)	0	(1,168)
Amortization of pension net actuarial loss: Before Tax Amount	[2],[4]	0	306	0	334
Amortization of pension net actuarial loss: Tax Effect	[2],[4]	0	(65)	0	(70)
Amortization of pension net actuarial cost: Net of Tax Amount	[2],[4]	0	241	0	264
Other comprehensive income : Before Tax Amount		(1,088)	3,184	3,849	5,061
Other comprehensive income : Tax Effect		228	(669)	(809)	(1,063)
Net current period other comprehensive income (loss)		(860)	2,515	3,040	3,998
Total Comprehensive Income: Before Tax Amount		574	5,115	6,390	8,395
Total comprehensive income: Tax Effect		171	(755)	(707)	(1,139)
Total comprehensive income: Net of Tax Amount		$ 745	$ 4,360	$ 5,683	$ 7,256

[1] Amounts are included in (loss) gain 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 provision for income taxes 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.