XML 66 R56.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Deposits (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2016 | Dec. 31, 2015
Deposits [Line Items] |  |
Deposits | $ 1,607,944 | $ 1,577,231
Average balance, deposits | $ 1,606,464 | $ 1,496,982
Deposits, weighted average interest rate during the period | 0.76% | 0.73%
Non-interest-bearing transaction accounts |  |
Deposits [Line Items] |  |
Deposits | $ 243,370 | $ 231,199
Average balance, deposits | $ 237,449 | $ 211,945
Deposits, weighted average interest rate during the period | 0.00% | 0.00%
Interest-bearing transaction accounts |  |
Deposits [Line Items] |  |
Deposits | $ 151,865 | $ 165,921
Average balance, deposits | $ 154,944 | $ 125,558
Deposits, weighted average interest rate during the period | 0.21% | 0.24%
Money market accounts |  |
Deposits [Line Items] |  |
Deposits | $ 671,420 | $ 612,642
Average balance, deposits | $ 660,189 | $ 602,842
Deposits, weighted average interest rate during the period | 0.51% | 0.55%
Certificates of deposit |  |
Deposits [Line Items] |  |
Deposits | $ 64,235 | $ 79,986
Average balance, deposits | $ 69,391 | $ 106,177
Deposits, weighted average interest rate during the period | 0.83% | 0.78%
Wholesale deposits |  |
Deposits [Line Items] |  |
Deposits | $ 477,054 | $ 487,483
Average balance, deposits | $ 484,491 | $ 450,460
Deposits, weighted average interest rate during the period | 1.63% | 1.43%

X
- Definition Average Balance, Deposits + References No definition available. + Details
Name: | fbiz_AverageBalanceDeposits
Namespace Prefix: | fbiz_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition [Line Items] for Deposit [Table] + References No definition available. + Details
Name: | fbiz_DepositLineItems
Namespace Prefix: | fbiz_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Deposits, Weighted Average Interest Rate During the Period + References No definition available. + Details
Name: | fbiz_DepositsWeightedAverageInterestRateDuringthePeriod
Namespace Prefix: | fbiz_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.12) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
Name: | us-gaap_Deposits
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | fbiz_DepositTypeAxis=fbiz_NoninterestbearingTransactionAccountsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fbiz_DepositTypeAxis=fbiz_InterestbearingTransactionAccountsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fbiz_DepositTypeAxis=fbiz_MoneyMarketAccountsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fbiz_DepositTypeAxis=fbiz_NonbrokeredCertificatesofDepositMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fbiz_DepositTypeAxis=fbiz_BrokeredCertificatesofDepositMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |