Goodwill and Other Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Goodwill and other intangibles assets
Goodwill impairment	$ 0us-gaap_GoodwillImpairmentLoss	$ 0us-gaap_GoodwillImpairmentLoss
Changes in the carrying amount of goodwill	0us-gaap_GoodwillPeriodIncreaseDecrease	0us-gaap_GoodwillPeriodIncreaseDecrease
Total Goodwill	20,686us-gaap_Goodwill	20,686us-gaap_Goodwill
FirsTech
Goodwill and other intangibles assets
Total Goodwill	8,992	8,992
Busey Wealth Management
Goodwill and other intangibles assets
Total Goodwill	$ 11,694	$ 11,694

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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