XML 55 R85.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Share-based Compensation (Details) - USD ($) | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2019 | Feb. 05, 2020 | May 22, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Feb. 03, 2015
Share-based Compensation |  |  |  |  |  |
Period from effective date after which no awards may be granted | 10 years |  |  |  |  |
Number of shares held in treasury | 1,121,961 |  |  | 310,745 |  |
Shares authorized for repurchase under stock repurchase plan |  | 2,000,000 | 1,000,000 |  |  | 666,667
Number of shares that may yet be purchased | 389,938 |  |  |  |  |
Restricted stock unit |  |  |  |  |  |
Share-based Compensation |  |  |  |  |  |
Number of shares of common stock per award | 1 |  |  |  |  |
Minimum | Restricted stock unit |  |  |  |  |  |
Share-based Compensation |  |  |  |  |  |
Requisite service periods | 1 year |  |  |  |  |
Minimum | Deferred stock units |  |  |  |  |  |
Share-based Compensation |  |  |  |  |  |
Vesting period | 12 months |  |  |  |  |
Maximum | Restricted stock unit |  |  |  |  |  |
Share-based Compensation |  |  |  |  |  |
Requisite service periods | 5 years |  |  |  |  |
Directors | Deferred stock units |  |  |  |  |  |
Share-based Compensation |  |  |  |  |  |
Number of shares of common stock per award | 1 |  |  |  |  |
Settlement period | 30 days |  |  |  |  |
2010 Equity Incentive Plan |  |  |  |  |  |
Share-based Compensation |  |  |  |  |  |
Maximum number of shares that may be delivered to participants | 1,333,333 |  |  |  |  |
2010 Equity Incentive Plan | Maximum | Options and SARs |  |  |  |  |  |
Share-based Compensation |  |  |  |  |  |
Shares available for grant during any calendar year | 133,333 |  |  |  |  |
2010 Equity Incentive Plan | Maximum | Stock awards |  |  |  |  |  |
Share-based Compensation |  |  |  |  |  |
Shares available for grant during any calendar year | 66,667 |  |  |  |  |
2010 Equity Incentive Plan | Maximum | Cash incentive awards and cash-settled stock awards |  |  |  |  |  |
Share-based Compensation |  |  |  |  |  |
Amount of award payable with respect to any calendar year | $ 1,000,000 |  |  |  |  |
First Community 2016 Equity Incentive Plan |  |  |  |  |  |
Share-based Compensation |  |  |  |  |  |
Maximum number of shares that may be delivered to participants |  |  |  |  | 443,619 |

X
- Definition Represents the amount of award payable in a calendar year to any one participant under a performance-based equity compensation plan. + References No definition available. + Details
Name: | buse_ShareBasedCompensationArrangementByShareBasedPaymentAwardAmountOfAwardPayableInCalendarYear
Namespace Prefix: | buse_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents the settlement period of awards, following the earlier of separation from the Board or a change in control of the entity. + References No definition available. + Details
Name: | buse_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardSettlementPeriod
Namespace Prefix: | buse_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of shares available for grant to any one participant in a calendar year under a performance-based equity compensation plan. + References No definition available. + Details
Name: | buse_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrantInCalendarYear
Namespace Prefix: | buse_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of shares of common stock per award under the equity-based compensation plan. + References No definition available. + Details
Name: | buse_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesOfCommonStockPerAward
Namespace Prefix: | buse_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the period from the effective date after which no awards will be granted under the equity-based compensation plan. + References No definition available. + Details
Name: | buse_ShareBasedCompensationArrangementByShareBasedPaymentAwardPeriodFromEffectiveDateAfterWhichAwardsWillNotBeGranted
Namespace Prefix: | buse_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares authorized for issuance under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29,30) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
Name: | us-gaap_TreasuryStockShares
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=buse_DeferredStockUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_TitleOfIndividualAxis=srt_DirectorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=buse_The2010EquityIncentivePlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=buse_StockOptionsAndStockAppreciationRightsSARSMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=buse_StockAwardsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=buse_CashIncentiveAndCashSettledStockAwardsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=buse_FirstCommunity2016EquityIncentivePlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |