FHLB Advances, Other Borrowings and Junior Subordinated Notes Subordinated notes payable and junior subordinated notes payable (Details) (USD $)
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0 Months Ended |
12 Months Ended |
0 Months Ended |
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Jan. 17, 2014
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2008
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Dec. 31, 2014
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Aug. 26, 2014
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Dec. 31, 2011
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Subordinated Borrowing [Line Items] |
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Borrowed funds |
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$ 44,309,000us-gaap_DebtAndCapitalLeaseObligations |
$ 22,251,000us-gaap_DebtAndCapitalLeaseObligations |
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44,309,000us-gaap_DebtAndCapitalLeaseObligations |
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Repayment of subordinated notes payable |
4,000,000us-gaap_EarlyRepaymentOfSubordinatedDebt |
4,000,000us-gaap_EarlyRepaymentOfSubordinatedDebt |
0us-gaap_EarlyRepaymentOfSubordinatedDebt |
33,289,000us-gaap_EarlyRepaymentOfSubordinatedDebt |
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Junior subordinated notes |
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10,315,000us-gaap_JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust |
10,315,000us-gaap_JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust |
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10,315,000us-gaap_JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust |
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Debt issuance cost |
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428,000us-gaap_DebtIssuanceCosts |
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Debt issuance costs, unamortized |
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339,000us-gaap_UnamortizedDebtIssuanceExpense |
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339,000us-gaap_UnamortizedDebtIssuanceExpense |
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Subordinated Debt |
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Subordinated Borrowing [Line Items] |
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Fixed rate |
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6.50%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = us-gaap_SubordinatedDebtMember |
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Long-term Debt, Description, Interest Rate Changes |
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From and including September 1, 2019 to the maturity date, the interest rate shall reset quarterly to an interest rate per annum equal to the then-current three-month LIBOR rate plus 470 basis points, payable quarterly in arrears. |
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Long-term Debt, Description, Call Features |
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The Corporation may, at its option, beginning with the interest payment date of September 1, 2019 and on any interest payment date thereafter, redeem the Notes, in whole or in part at a redemption price equal to 100% of the principal amount of the Notes to be redeemed plus accrued and unpaid interest to the date of redemption. Any partial redemption will be made pro rata among all of the holders. The notes are not subject to repayment at the option of the holders. |
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Subordinated Debt Proceeds Used to Pay for Cash Portion of Merger |
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13,500,000fbiz_SubordinatedDebtProceedsUsedtoPayforCashPortionofMerger / us-gaap_LongtermDebtTypeAxis = us-gaap_SubordinatedDebtMember |
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Subordinated debt - third party financial institution |
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Subordinated Borrowing [Line Items] |
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Subordinated notes payable |
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1,700,000us-gaap_SubordinatedDebt / us-gaap_LongtermDebtTypeAxis = fbiz_SubordinatedDebtThirdPartyFinancialInstitutionMember |
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1,700,000us-gaap_SubordinatedDebt / us-gaap_LongtermDebtTypeAxis = fbiz_SubordinatedDebtThirdPartyFinancialInstitutionMember |
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39,000,000us-gaap_SubordinatedDebt / us-gaap_LongtermDebtTypeAxis = fbiz_SubordinatedDebtThirdPartyFinancialInstitutionMember |
Subordinated debt - private placement |
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Subordinated Borrowing [Line Items] |
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Subordinated notes payable |
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6,200,000us-gaap_SubordinatedDebt / us-gaap_LongtermDebtTypeAxis = fbiz_SubordinatedDebtPrivatePlacementMember |
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6,200,000us-gaap_SubordinatedDebt / us-gaap_LongtermDebtTypeAxis = fbiz_SubordinatedDebtPrivatePlacementMember |
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Junior subordinated notes |
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Subordinated Borrowing [Line Items] |
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Junior subordinated notes |
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10,315,000us-gaap_JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust / us-gaap_LongtermDebtTypeAxis = us-gaap_JuniorSubordinatedDebtMember |
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10,315,000us-gaap_JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust / us-gaap_LongtermDebtTypeAxis = us-gaap_JuniorSubordinatedDebtMember |
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Fixed rate |
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10.50%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = us-gaap_JuniorSubordinatedDebtMember |
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10.50%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = us-gaap_JuniorSubordinatedDebtMember |
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Subordinated debt - private placement |
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Subordinated Borrowing [Line Items] |
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Subordinated debt, fixed interest rate |
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7.50%us-gaap_SubordinatedBorrowingInterestRate / us-gaap_SubordinatedBorrowingAxis = fbiz_SubordinatedDebtPrivatePlacementMember |
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Subordinated Debt |
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Subordinated Borrowing [Line Items] |
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Borrowed funds |
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22,926,000us-gaap_DebtAndCapitalLeaseObligations / us-gaap_DebtInstrumentAxis = us-gaap_SubordinatedDebtMember |
11,926,000us-gaap_DebtAndCapitalLeaseObligations / us-gaap_DebtInstrumentAxis = us-gaap_SubordinatedDebtMember |
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22,926,000us-gaap_DebtAndCapitalLeaseObligations / us-gaap_DebtInstrumentAxis = us-gaap_SubordinatedDebtMember |
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London Interbank Offered Rate (LIBOR) | Subordinated debt - third party financial institution |
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Subordinated Borrowing [Line Items] |
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Debt instrument, basis spread on variable rate |
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4.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_SubordinatedBorrowingAxis = fbiz_SubordinatedDebtThirdPartyFinancialInstitutionMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |
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Interest rate floor debt | Subordinated debt - third party financial institution |
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Subordinated Borrowing [Line Items] |
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Interest rate floor |
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6.00%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum / us-gaap_SubordinatedBorrowingAxis = fbiz_SubordinatedDebtThirdPartyFinancialInstitutionMember / us-gaap_VariableRateAxis = fbiz_InterestRateFloorDebtMember |
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Aslin Group, Inc. | Subordinated Debt - Issued to fund mergers |
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Subordinated Borrowing [Line Items] |
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Subordinated notes payable |
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$ 15,000,000us-gaap_SubordinatedDebt / us-gaap_BusinessAcquisitionAxis = fbiz_AslinGroupInc.Member / us-gaap_LongtermDebtTypeAxis = fbiz_SubordinatedDebtIssuedtofundmergersMember |
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