XML 42 R32.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Deposits (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2018
Deposits [Abstract] |
Deposits | The composition of deposits is shown below. Average balances represent year-to-date averages.
|  | September 30, 2018 |  | December 31, 2017
|  | Balance |  | Average Balance |  | Average Rate |  | Balance |  | Average Balance |  | Average Rate
|  | (Dollars in Thousands)
Non-interest-bearing transaction accounts |  | $ | 233,915 |  |  | $ | 236,208 |  |  | — | % |  | $ | 277,445 |  |  | $ | 230,907 |  |  | — | %
Interest-bearing transaction accounts |  | 256,303 |  |  | 278,042 |  |  | 0.87 |  |  | 217,625 |  |  | 226,540 |  |  | 0.59 |
Money market accounts |  | 475,322 |  |  | 487,395 |  |  | 0.91 |  |  | 515,077 |  |  | 583,241 |  |  | 0.47 |
Certificates of deposit |  | 111,311 |  |  | 80,630 |  |  | 1.42 |  |  | 76,199 |  |  | 56,667 |  |  | 1.00 |
Wholesale deposits |  | 332,052 |  |  | 302,262 |  |  | 1.88 |  |  | 307,985 |  |  | 361,712 |  |  | 1.70 |
Total deposits |  | $ | 1,408,903 |  |  | $ | 1,384,537 |  |  | 0.99 |  |  | $ | 1,394,331 |  |  | $ | 1,459,067 |  |  | 0.74 |

X
- Definition Deposits [Table Text Block] + References No definition available. + Details
Name: | fbiz_DepositsTableTextBlock
Namespace Prefix: | fbiz_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DepositsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration