Loans and Allowance for Loan Losses - Primary Segments (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
Components of loans
Individually evaluated for impairment	$ 17,556		$ 11,170
Collectively evaluated for impairment	1,430,770		1,315,229
Total loans, excluding acquired	1,448,326	$ 1,374,235	1,326,399
Total Loans	1,496,761	1,374,235
Purchased credit impaired loans
Components of loans
Individually evaluated for impairment	0
Collectively evaluated for impairment	48,435
Total Loans	48,435
Commercial and Non-Residential Real Estate
Components of loans
Individually evaluated for impairment	14,372		7,771
Collectively evaluated for impairment	1,113,420		977,059
Total loans, excluding acquired	1,127,792	1,063,828	984,830
Total Loans	1,127,792	1,063,828
Commercial and Non-Residential Real Estate \| Purchased credit impaired loans
Components of loans
Individually evaluated for impairment	0
Collectively evaluated for impairment	19,799
Total Loans	19,799	0
Residential Real Estate
Components of loans
Individually evaluated for impairment	3,082		3,112
Collectively evaluated for impairment	276,544		270,715
Total loans, excluding acquired	279,626	271,604	273,827
Total Loans	279,626	271,604
Residential Real Estate \| Purchased credit impaired loans
Components of loans
Individually evaluated for impairment	0
Collectively evaluated for impairment	27,033
Total Loans	27,033	0
Home Equity
Components of loans
Individually evaluated for impairment	102		250
Collectively evaluated for impairment	37,281		58,643
Total loans, excluding acquired	37,383	35,106	58,893
Home Equity \| Purchased credit impaired loans
Components of loans
Individually evaluated for impairment	0
Collectively evaluated for impairment	0
Total Loans	0
Consumer
Components of loans
Individually evaluated for impairment	0		37
Collectively evaluated for impairment	3,525		8,812
Total loans, excluding acquired	3,525	3,697	$ 8,849
Total Loans	3,525	3,697
Consumer \| Purchased credit impaired loans
Components of loans
Individually evaluated for impairment	0
Collectively evaluated for impairment	1,603
Total Loans	$ 1,603	$ 0

Financing Receivable, Before Allowance For Credit Loss And Fee, Excluding Purchased Credit Deteriorated Loans Acquired

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount, before allowance for credit loss and fee, of financing receivable. Excludes financing receivable covered under loss sharing agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919230-210447

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=121593590&loc=d3e4428-111522

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(7))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

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- Definition

The balance of financing receivables that were collectively evaluated for impairment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524

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- Definition

The balance of financing receivables that were individually evaluated for impairment.

+ References

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