XML 40 R53.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Deposits (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2014 | Dec. 31, 2013
Deposits [Line Items] |  |
Deposits | $ 1,136,700 | $ 1,129,855
Deposits, weighted average balance | 1,123,283 | 1,106,058
Deposits, weighted average interest rate during the period | 0.77% | 0.88%
Non-interest-bearing transaction accounts |  |
Deposits [Line Items] |  |
Deposits | 146,507 | 151,275
Deposits, weighted average balance | 143,953 | 138,920
Deposits, weighted average interest rate during the period | 0.00% | 0.00%
Interest-bearing transaction accounts |  |
Deposits [Line Items] |  |
Deposits | 80,458 | 77,004
Deposits, weighted average balance | 78,591 | 62,578
Deposits, weighted average interest rate during the period | 0.23% | 0.20%
Money market accounts |  |
Deposits [Line Items] |  |
Deposits | 454,405 | 456,065
Deposits, weighted average balance | 462,574 | 450,558
Deposits, weighted average interest rate during the period | 0.51% | 0.53%
Certificates of deposit |  |
Deposits [Line Items] |  |
Deposits | 49,794 | 51,979
Deposits, weighted average balance | 50,925 | 60,276
Deposits, weighted average interest rate during the period | 0.94% | 1.01%
Brokered certificates of deposit |  |
Deposits [Line Items] |  |
Deposits | 405,536 | 393,532
Deposits, weighted average balance | $ 387,240 | $ 393,726
Deposits, weighted average interest rate during the period | 1.46% | 1.68%

X
- 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 Weighted Average Balance, Deposits + References No definition available. + Details
Name: | fbiz_WeightedAverageBalanceDeposits
Namespace Prefix: | fbiz_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 9 + Details
Name: | us-gaap_Deposits
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant