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Short-Term Borrowings and Long-Term Debt - Short-term borrowings (Details)	3 Months Ended
	Mar. 31, 2021 USD ($) item	Dec. 31, 2020 USD ($)
Short-Term Borrowings
Short term borrowings	$ 26,376,000	$ 106,862,000
Federal funds purchased | Federal Home Loan Bank of Pittsburgh
Short-Term Borrowings
Number of borrowing facilities | item	2
Short term borrowings	$ 0	0
Federal funds purchased, facility one | Federal Home Loan Bank of Pittsburgh
Short-Term Borrowings
Maximum borrowing capacity	24,000,000
Federal funds purchased, facility two | Federal Home Loan Bank of Pittsburgh
Short-Term Borrowings
Maximum borrowing capacity	$ 15,000,000
Open Repo Plus Weekly 0.41 Percent Maturing On 05/28/2021 | Federal Home Loan Bank of Pittsburgh
Short-Term Borrowings
Short term borrowings		60,416,000
Interest rate (as a percent)	0.41%
Federal Reserve discount window | Federal Home Loan Bank of Pittsburgh
Short-Term Borrowings
Maximum borrowing capacity	$ 10,100,000
Short term borrowings	$ 0	10,000,000
Interest rate (as a percent)	0.25%
PPPLF Advance
Short-Term Borrowings
Advances secured percentage	100.00%
Short term borrowings	$ 110,600,000
Interest rate (as a percent)	0.35%
Mid-term Repo-fixed 0.36%, Maturing On 01/13/2021 | Federal Home Loan Bank of Pittsburgh
Short-Term Borrowings
Short term borrowings		4,605,000
Interest rate (as a percent)	0.36%
Mid-term Repo-fixed 0.10%, Maturing On 06/10/2021 | Federal Home Loan Bank of Pittsburgh
Short-Term Borrowings
Short term borrowings	$ 6,376,000	6,376,000
Interest rate (as a percent)	0.10%
Mid-term Repo-fixed 0.11%, Maturing On 09/10/2021 | Federal Home Loan Bank of Pittsburgh
Short-Term Borrowings
Short term borrowings	$ 10,000,000	10,000,000
Interest rate (as a percent)	0.11%
Mid-term Repo-fixed 0.16%, Maturing On 12/10/2021 | Federal Home Loan Bank of Pittsburgh
Short-Term Borrowings
Short term borrowings	$ 10,000,000	10,000,000
Interest rate (as a percent)	0.16%
Mid-term Repo-fixed 0.23%, Maturing On 01/27/2021 | Federal Home Loan Bank of Pittsburgh
Short-Term Borrowings
Short term borrowings		$ 5,465,000
Interest rate (as a percent)	0.23%

X

- Definition

The number of borrowing facilities.

+ References

No definition available.

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- Definition

The percentage of short term borrowings that are secured by the aggregate face value of pools comprised of loans with common maturity dates.

+ References

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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-Paragraph 1
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- Definition

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+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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