XML 115 R49.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Nature of Operations and Summary of Significant Accounting Policies Direct Financing Leases (Details) | 12 Months Ended
--- | ---
Dec. 31, 2013
Minimum |
Unguaranteed Residual Percentage Of Cost [Line Items] |
Unguaranteed residual percent of cost | 3.00%
Maximum |
Unguaranteed Residual Percentage Of Cost [Line Items] |
Unguaranteed residual percent of cost | 20.00%

X
- Details
Name: | fbiz_UnguaranteedResidualPercentageOfCostLineItems
Namespace Prefix: | fbiz_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Unguaranteed Residual Percent Of Cost + References No definition available. + Details
Name: | fbiz_UnguaranteedResidualPercentOfCost
Namespace Prefix: | fbiz_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration