XML 69 R54.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Nature of Operations and Summary of Significant Accounting Policies Other Investments (Details) | 12 Months Ended
--- | ---
Dec. 31, 2015
Investment In Limited Partnerships Accounting Treatment [Line Items] |
Maximum ownership percentage that is not consolidated | 50.00%
Investment in corporations minimum ownership percentage for accounting for using the equity method | 20.00%
Investment in corporations maximum ownership percentage for accounting for at cost | 20.00%
Investment in limited partnerships maximum ownership percentage for accounting for at cost | 3.00%
Minimum |
Investment In Limited Partnerships Accounting Treatment [Line Items] |
Investment in limited partnerships ownership percentage for accounting for using the equity method | 3.00%
Maximum |
Investment In Limited Partnerships Accounting Treatment [Line Items] |
Investment in limited partnerships ownership percentage for accounting for using the equity method | 50.00%

X
- Definition Investment In Corporations Maximum Ownership Percentage For Accounting For At Cost + References No definition available. + Details
Name: | fbiz_InvestmentInCorporationsMaximumOwnershipPercentageForAccountingForAtCost
Namespace Prefix: | fbiz_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Investment In Corporations Minimum Ownership Percentage For Accounting For Using The Equity Method + References No definition available. + Details
Name: | fbiz_InvestmentInCorporationsMinimumOwnershipPercentageForAccountingForUsingEquityMethod
Namespace Prefix: | fbiz_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition [Line Items] for Investment In Limited Partnerships Accounting Treatment [Table] + References No definition available. + Details
Name: | fbiz_InvestmentInLimitedPartnershipsAccountingTreatmentLineItems
Namespace Prefix: | fbiz_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Investment In Limited Partnerships Maximum Ownership Percentage For Accounting For At Cost + References No definition available. + Details
Name: | fbiz_InvestmentInLimitedPartnershipsMaximumOwnershipPercentageForAccountingForAtCost
Namespace Prefix: | fbiz_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Investment In Limited Partnerships Ownership Percentage For Accounting For Using The Equity Method + References No definition available. + Details
Name: | fbiz_InvestmentInLimitedPartnershipsOwnershipPercentageForAccountingForUsingEquityMethod
Namespace Prefix: | fbiz_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum Ownership Percentage That Is Not Consolidated + References No definition available. + Details
Name: | fbiz_MaximumOwnershipPercentageThatIsNotConsolidated
Namespace Prefix: | fbiz_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |