XML 23 R68.htm IDEA: XBRL DOCUMENT v3.20.1

Loans and Allowance for Loan Losses - Allowance for Loan Losses (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018
Beginning balance		$ 5,055
Provision		2,714	$ 2,622
Ending balance		5,762	5,055
Loans		556,053	525,870
Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Loans		30,094	41,340
Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Loans		104,537	110,756
Real Estate [Member] | Secured By Multi family Residential Properties [Member]
Loans		50,910	23,009
Real Estate [Member] | Secured By Non-farm Non residential Properties [Member]
Loans		162,981	156,162
Real Estate [Member] | Other Real Estate Loans [Member]
Loans		726	1,308
Commercial and Industrial Loans [Member]
Loans	[1]	90,957	85,779
Consumer Portfolio Segment [Member] | Consumer Loans [Member]
Loans		38,040	38,583
Consumer Portfolio Segment [Member] | Branch Retail [Member]
Loans		32,305	28,324
Consumer Portfolio Segment [Member] | Indirect Sales [Member]
Loans		45,503	40,609
FUSB [Member]
Beginning balance		2,735	2,447
Charge-offs		(98)	(16)
Recoveries		58	89
Provision		788	215
Ending balance		3,483	2,735
Individually evaluated for impairment		227	166
Collectively evaluated for impairment		3,256	2,569
Individually evaluated for impairment		2,813	831
Collectively evaluated for impairment		439,467	416,168
Loans		442,455	417,496
FUSB [Member] | Financial Asset Acquired With Credit Deterioration [Member]
Loans		175	497
FUSB [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Beginning balance		240	203
Provision		(44)	37
Ending balance		196	240
Individually evaluated for impairment			28
Collectively evaluated for impairment		196	212
Individually evaluated for impairment			153
Collectively evaluated for impairment		30,094	41,114
Loans		30,094	41,340
FUSB [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] | Financial Asset Acquired With Credit Deterioration [Member]
Loans			73
FUSB [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Beginning balance		322	238
Charge-offs		(63)	(9)
Recoveries		22	51
Provision		170	42
Ending balance		451	322
Individually evaluated for impairment		14	50
Collectively evaluated for impairment		437	272
Individually evaluated for impairment		701	57
Collectively evaluated for impairment		98,095	102,490
Loans		98,971	102,971
FUSB [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | Financial Asset Acquired With Credit Deterioration [Member]
Loans		175	424
FUSB [Member] | Real Estate [Member] | Secured By Multi family Residential Properties [Member]
Beginning balance		128	116
Provision		294	12
Ending balance		422	128
Collectively evaluated for impairment		422	128
Collectively evaluated for impairment		50,910	23,009
Loans		50,910	23,009
FUSB [Member] | Real Estate [Member] | Secured By Non-farm Non residential Properties [Member]
Beginning balance		831	777
Recoveries			4
Provision		133	50
Ending balance		964	831
Individually evaluated for impairment			1
Collectively evaluated for impairment		964	830
Individually evaluated for impairment		1,877	511
Collectively evaluated for impairment		161,104	155,651
Loans		162,981	156,162
FUSB [Member] | Real Estate [Member] | Other Real Estate Loans [Member]
Beginning balance		1	2
Provision			(1)
Ending balance		1	1
Collectively evaluated for impairment		1	1
Collectively evaluated for impairment		726	1,308
Loans		726	1,308
FUSB [Member] | Commercial and Industrial Loans [Member]
Beginning balance		1,138	1,049
Charge-offs			(3)
Recoveries		3	11
Provision		236	81
Ending balance		1,377	1,138
Individually evaluated for impairment		206	67
Collectively evaluated for impairment		1,171	1,071
Individually evaluated for impairment		206	67
Collectively evaluated for impairment		90,751	85,712
Loans	[1]	90,957	85,779
FUSB [Member] | Consumer Portfolio Segment [Member]
Loans		7,816	6,927
FUSB [Member] | Consumer Portfolio Segment [Member] | Consumer Loans [Member]
Beginning balance		75	62
Charge-offs		(35)	(4)
Recoveries		33	23
Provision		(1)	(6)
Ending balance		72	75
Individually evaluated for impairment		7	20
Collectively evaluated for impairment		65	55
Individually evaluated for impairment		29	43
Collectively evaluated for impairment		7,787	6,884
Loans		7,816	6,927
ALC [Member]
Beginning balance		2,320	2,327
Charge-offs		(2,729)	(3,101)
Recoveries		762	687
Provision		1,926	2,407
Ending balance		2,279	2,320
Collectively evaluated for impairment		2,279	2,320
Individually evaluated for impairment		129	211
Collectively evaluated for impairment		113,469	108,163
Loans		113,598	108,374
ALC [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Beginning balance		24	52
Charge-offs		(38)	(92)
Recoveries		25	23
Provision		4	41
Ending balance		15	24
Collectively evaluated for impairment		15	24
Individually evaluated for impairment		129	211
Collectively evaluated for impairment		5,437	7,574
Loans		5,566	7,785
ALC [Member] | Consumer Portfolio Segment [Member] | Consumer Loans [Member]
Beginning balance		1,724	1,653
Charge-offs		(1,965)	(2,478)
Recoveries		615	545
Provision		1,179	2,004
Ending balance		1,553	1,724
Collectively evaluated for impairment		1,553	1,724
Collectively evaluated for impairment		30,224	31,656
Loans		30,224	31,656
ALC [Member] | Consumer Portfolio Segment [Member] | Branch Retail [Member]
Beginning balance		427	393
Charge-offs		(425)	(415)
Recoveries		116	113
Provision		277	336
Ending balance		395	427
Collectively evaluated for impairment		395	427
Collectively evaluated for impairment		32,305	28,324
Loans		32,305	28,324
ALC [Member] | Consumer Portfolio Segment [Member] | Indirect Sales [Member]
Beginning balance		145	229
Charge-offs		(301)	(116)
Recoveries		6	6
Provision		466	26
Ending balance		316	145
Collectively evaluated for impairment		316	145
Collectively evaluated for impairment		45,503	40,609
Loans		45,503	40,609
FUSB and ALC [Member]
Beginning balance		5,055	4,774
Charge-offs		(2,827)	(3,117)
Recoveries		820	776
Provision		2,714	2,622
Ending balance		5,762	5,055
Individually evaluated for impairment		227
Collectively evaluated for impairment		5,535	4,889
Individually evaluated for impairment		2,942	1,042
Collectively evaluated for impairment		552,936	524,331
Loans		556,053	525,870
FUSB and ALC [Member] | Financial Asset Acquired With Credit Deterioration [Member]
Loans		175	497
FUSB and ALC [Member] | FUSB [Member]
Individually evaluated for impairment			166
FUSB and ALC [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member]
Beginning balance		240	203
Provision		(44)	37
Ending balance		196	240
Collectively evaluated for impairment		196	212
Individually evaluated for impairment			153
Collectively evaluated for impairment		30,094	41,114
Loans		30,094	41,340
FUSB and ALC [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] | Financial Asset Acquired With Credit Deterioration [Member]
Loans			73
FUSB and ALC [Member] | Real Estate [Member] | Construction, Land Development and Other Land Loans [Member] | FUSB [Member]
Individually evaluated for impairment			28
FUSB and ALC [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Beginning balance		346	290
Charge-offs		(101)	(101)
Recoveries		47	74
Provision		174	83
Ending balance		466	346
Individually evaluated for impairment		14
Collectively evaluated for impairment		452	296
Individually evaluated for impairment		830	268
Collectively evaluated for impairment		103,532	110,064
Loans		104,537	110,756
FUSB and ALC [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | Financial Asset Acquired With Credit Deterioration [Member]
Loans		175	424
FUSB and ALC [Member] | Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | FUSB [Member]
Individually evaluated for impairment			50
FUSB and ALC [Member] | Real Estate [Member] | Secured By Multi family Residential Properties [Member]
Beginning balance		128	116
Provision		294	12
Ending balance		422	128
Collectively evaluated for impairment		422	128
Collectively evaluated for impairment		50,910	23,009
Loans		50,910	23,009
FUSB and ALC [Member] | Real Estate [Member] | Secured By Non-farm Non residential Properties [Member]
Beginning balance		831	777
Recoveries			4
Provision		133	50
Ending balance		964	831
Collectively evaluated for impairment		964	830
Individually evaluated for impairment		1,877	511
Collectively evaluated for impairment		161,104	155,651
Loans		162,981	156,162
FUSB and ALC [Member] | Real Estate [Member] | Secured By Non-farm Non residential Properties [Member] | FUSB [Member]
Individually evaluated for impairment			1
FUSB and ALC [Member] | Real Estate [Member] | Other Real Estate Loans [Member]
Beginning balance		1	2
Provision			(1)
Ending balance		1	1
Collectively evaluated for impairment		1	1
Collectively evaluated for impairment		726	1,308
Loans		726	1,308
FUSB and ALC [Member] | Commercial and Industrial Loans [Member]
Beginning balance		1,138	1,049
Charge-offs			(3)
Recoveries		3	11
Provision		236	81
Ending balance		1,377	1,138
Individually evaluated for impairment		206
Collectively evaluated for impairment		1,171	1,071
Individually evaluated for impairment		206	67
Collectively evaluated for impairment		90,751	85,712
Loans		90,957	85,779
FUSB and ALC [Member] | Commercial and Industrial Loans [Member] | FUSB [Member]
Individually evaluated for impairment			67
FUSB and ALC [Member] | Consumer Portfolio Segment [Member] | Consumer Loans [Member]
Beginning balance		1,799	1,715
Charge-offs		(2,000)	(2,482)
Recoveries		648	568
Provision		1,178	1,998
Ending balance		1,625	1,799
Individually evaluated for impairment		7
Collectively evaluated for impairment		1,618	1,779
Individually evaluated for impairment		29	43
Collectively evaluated for impairment		38,011	38,540
Loans		38,040	38,583
FUSB and ALC [Member] | Consumer Portfolio Segment [Member] | Consumer Loans [Member] | FUSB [Member]
Individually evaluated for impairment			20
FUSB and ALC [Member] | Consumer Portfolio Segment [Member] | Branch Retail [Member]
Beginning balance		427	393
Charge-offs		(425)	(415)
Recoveries		116	113
Provision		277	336
Ending balance		395	427
Collectively evaluated for impairment		395	427
Collectively evaluated for impairment		32,305	28,324
Loans		32,305	28,324
FUSB and ALC [Member] | Consumer Portfolio Segment [Member] | Indirect Sales [Member]
Beginning balance		145	229
Charge-offs		(301)	(116)
Recoveries		6	6
Provision		466	26
Ending balance		316	145
Collectively evaluated for impairment		316	145
Collectively evaluated for impairment		45,503	40,609
Loans		$ 45,503	$ 40,609
[1] Includes equipment financing leases.

X

- Definition

Provision reduction in reserve for loan losses.

+ References

No definition available.

+ Details

Name:	fusb_ProvisionReductionInReserveForLoanLosses
Namespace Prefix:	fusb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of direct write-downs of accounts receivable charged against the allowance.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447

+ Details

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

X

- Definition

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

+ 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)(4)
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524

+ Details

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

X

- Definition

The valuation allowance for financing receivables that are expected to be uncollectible 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 (g)
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524

+ Details

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

X

- Definition

Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually 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 (g)
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524

+ Details

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

X

- 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=118936363&loc=SL6953423-111524

+ Details

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

X

- Definition

The balance of financing receivables that were individually 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=118936363&loc=SL6953423-111524

+ Details

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

X

- 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

X

- 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

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=fusb_RealEstate1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=fusb_ConstructionLandDevelopmentAndOtherLandLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=fusb_SecuredBy1To4FamilyResidentialPropertiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=fusb_SecuredByMultifamilyResidentialPropertiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=fusb_SecuredByNonfarmNonresidentialPropertiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=fusb_OtherRealEstateLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

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

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=fusb_ConsumerLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=fusb_BranchRetailMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=fusb_IndirectSalesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=fusb_FirstUnitedSecurityBankMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=fusb_AcceptanceLoanCompanyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=fusb_FirstUnitedSecurityBankAndAcceptanceLoanCompanyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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