XML 82 R70.htm IDEA: XBRL DOCUMENT v3.22.2.2

FHLB Advances, Other Borrowings and Junior Subordinated Notes Payable (Composition of Borrowed Funds) (Details) - USD ($)	3 Months Ended	9 Months Ended
	Mar. 31, 2022	Sep. 30, 2022	Dec. 31, 2021
Composition of Borrowed Funds
Borrowed funds		$ 420,297,000	$ 413,527,000
Borrowed funds, average balance	$ 418,783,000	$ 470,542,000
Borrowed funds, interest rate during period	1.86%	2.01%
Federal funds purchased
Composition of Borrowed Funds
Borrowed funds		$ 0	0
Borrowed funds, average balance	$ 0	$ 15,000
Borrowed funds, interest rate during period	0.00%	2.02%
FHLB advances
Composition of Borrowed Funds
Borrowed funds		$ 377,800,000	368,800,000
Borrowed funds, average balance	$ 376,781,000	$ 422,576,000
Borrowed funds, interest rate during period	1.30%	1.54%
Line of Credit
Composition of Borrowed Funds
Borrowed funds		$ 0	500,000
Borrowed funds, average balance	$ 78,000	$ 114,000
Borrowed funds, interest rate during period	2.90%	2.77%
Other borrowings
Composition of Borrowed Funds
Borrowed funds		$ 8,190,000	10,363,000
Borrowed funds, average balance	$ 8,090,000	$ 9,234,000
Borrowed funds, interest rate during period	4.11%	4.68%
Subordinated notes payable
Composition of Borrowed Funds
Borrowed funds		$ 34,307,000	23,788,000
Borrowed funds, average balance	$ 23,766,000	$ 35,356,000
Borrowed funds, interest rate during period	5.94%	5.13%
Junior subordinated notes(1)
Composition of Borrowed Funds
Borrowed funds		$ 0	$ 10,076,000
Borrowed funds, average balance	$ 10,068,000	$ 3,247,000
Borrowed funds, interest rate during period	11.05%	20.69%

X

- Definition

Borrowed Funds, Average Balance

+ References

No definition available.

+ Details

Name:	fbiz_BorrowedFundsAverageBalance
Namespace Prefix:	fbiz_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

[Line Items] for Composition of Borrowed Funds [Table]

+ References

No definition available.

+ Details

Name:	fbiz_CompositionofBorrowedFundsLineItems
Namespace Prefix:	fbiz_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of short-term and long-term debt and lease obligation.

+ 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 210.9-03.13,16)
-URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.16)
-URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910

+ Details

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

X

- Definition

The average effective interest rate during the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=124435984&loc=d3e28551-108399

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1F
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495355-112611

Reference 3: 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))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateDuringPeriod
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_DebtInstrumentAxis=us-gaap_FederalFundsPurchasedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=fbiz_FHLBadvancesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=fbiz_OtherBorrowingsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=us-gaap_SubordinatedDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=us-gaap_JuniorSubordinatedDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: