Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

Name:	us-gaap_AllowanceForLoanAndLeaseLossRecoveryOfBadDebts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

Name:	us-gaap_AllowanceForLoanAndLeaseLossesRollForward
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

+ 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 (c)(3)
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.7(d))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

Name:	us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount, after recoveries, of loans and leases that have been written-off.

+ References

No definition available.

+ Details

Name:	us-gaap_AllowanceForLoanAndLeaseLossesWriteoffsNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- References

No definition available.

+ Details

Name:	us-gaap_FinancingReceivableAllowanceForCreditLossAdditionalInformationAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

+ References

+ Details

Name:	us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

+ References

+ Details

Name:	us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

+ Details

Name:	us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

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

+ References

+ Details

Name:	us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.7(d))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (b)(1)(ii)
-URI http://asc.fasb.org/extlink&oid=118939070&loc=d3e15032-111544

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB Topic 6.L.1)
-URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707

+ Details

Name:	us-gaap_LoansAndLeasesReceivableAllowance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=118952595&loc=d3e4428-111522

+ Details

Name:	us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of expense related to estimated loss from loan and lease transactions.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.11)
-URI http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524

+ Details

Name:	us-gaap_ProvisionForLoanAndLeaseLosses
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_CreditLossStatusAxis=us-gaap_FinancialAssetAcquiredWithCreditDeteriorationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ResidentialPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Allowance for Loan Losses (Activity in Allowance for Loan Losses) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Mar. 31, 2020	Dec. 31, 2019
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 12,674	$ 11,566	$ 11,566
Provision (benefit) for loan losses	489	422
Gross chargeoffs	(218)	(101)
Recoveries	44	73
Net (chargeoffs) recoveries	(174)		(28)
Ending allowance for loan losses	12,989	11,960	12,674
Allowance for loan losses and Balance of loans
Allowance for loan losses, individually evaluated for impairment				$ 340	$ 385
Allowance for loan losses, Collectively evaluated for impairment				11,891	11,527
Ending Allowance for loan losses	12,989	11,960	12,674	12,989	12,674
Balance of loans, individually evaluated for impairment				15,004	17,870
Balance of loans, collectively evaluated for impairment				1,444,665	1,203,766
Total loans				1,466,407	1,227,609
Acquired with deteriorated credit quality
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	762
Ending allowance for loan losses	758		762
Allowance for loan losses and Balance of loans
Ending Allowance for loan losses	758		762	758	762
Total loans				6,738	5,973
Commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	5,773	5,227	5,227
Provision (benefit) for loan losses	350	(46)
Gross chargeoffs	0	0
Recoveries	0	0
Net (chargeoffs) recoveries	0		0
Ending allowance for loan losses	6,123	5,181	5,773
Allowance for loan losses and Balance of loans
Allowance for loan losses, individually evaluated for impairment				0	0
Allowance for loan losses, Collectively evaluated for impairment				5,417	5,062
Ending Allowance for loan losses	6,123	5,181	5,773	6,123	5,773
Balance of loans, individually evaluated for impairment				3,721	4,832
Balance of loans, collectively evaluated for impairment				722,199	596,930
Total loans				728,910	604,646
Commercial real estate \| Acquired with deteriorated credit quality
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	711
Ending allowance for loan losses	706		711
Allowance for loan losses and Balance of loans
Ending Allowance for loan losses	706		711	706	711
Total loans				2,990	2,884
Commercial and industrial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	5,515	5,174	5,174
Provision (benefit) for loan losses	87	477
Gross chargeoffs	(187)	(95)
Recoveries	8	50
Net (chargeoffs) recoveries	(179)		(45)
Ending allowance for loan losses	5,423	5,606	5,515
Allowance for loan losses and Balance of loans
Allowance for loan losses, individually evaluated for impairment				318	363
Allowance for loan losses, Collectively evaluated for impairment				5,076	5,124
Ending Allowance for loan losses	5,423	5,606	5,515	5,423	5,515
Balance of loans, individually evaluated for impairment				9,903	11,652
Balance of loans, collectively evaluated for impairment				458,545	398,441
Total loans				469,227	410,228
Commercial and industrial \| Acquired with deteriorated credit quality
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	28
Ending allowance for loan losses	29		28
Allowance for loan losses and Balance of loans
Ending Allowance for loan losses	29		28	29	28
Total loans				779	135
Residential real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,384	1,164	1,164
Provision (benefit) for loan losses	23	(15)
Gross chargeoffs	0	0
Recoveries	34	21
Net (chargeoffs) recoveries	34		21
Ending allowance for loan losses	1,441	1,170	1,384
Allowance for loan losses and Balance of loans
Allowance for loan losses, individually evaluated for impairment				22	22
Allowance for loan losses, Collectively evaluated for impairment				1,396	1,339
Ending Allowance for loan losses	1,441	1,170	1,384	1,441	1,384
Balance of loans, individually evaluated for impairment				1,380	1,386
Balance of loans, collectively evaluated for impairment				258,545	207,499
Total loans				262,894	211,839
Residential real estate \| Acquired with deteriorated credit quality
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	23
Ending allowance for loan losses	23		23
Allowance for loan losses and Balance of loans
Ending Allowance for loan losses	23		23	23	23
Total loans				2,969	2,954
Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	2	1	1
Provision (benefit) for loan losses	29	6
Gross chargeoffs	(31)	(6)
Recoveries	2	2
Net (chargeoffs) recoveries	(29)		(4)
Ending allowance for loan losses	2	3	2
Allowance for loan losses and Balance of loans
Allowance for loan losses, individually evaluated for impairment				0	0
Allowance for loan losses, Collectively evaluated for impairment				2	2
Ending Allowance for loan losses	2	$ 3	2	2	2
Balance of loans, individually evaluated for impairment				0	0
Balance of loans, collectively evaluated for impairment				5,376	896
Total loans				5,376	896
Consumer \| Acquired with deteriorated credit quality
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	0
Ending allowance for loan losses	0		0
Allowance for loan losses and Balance of loans
Ending Allowance for loan losses	$ 0		$ 0	0	0
Total loans				$ 0	$ 0