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Junior Subordinated Debentures - Payments and other disclosures (Details) (USD $) | 0 Months Ended | 3 Months Ended |  |  | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 21, 2014 | Jun. 30, 2014 | Sep. 30, 2014 | Dec. 31, 2013 | Sep. 30, 2014 Junior subordinated debentures | Sep. 30, 2014 Junior subordinated debentures item | Aug. 31, 2010 Junior subordinated debentures | Sep. 30, 2014 Junior subordinated debentures Old Second Capital Trust I | Sep. 30, 2014 Junior subordinated debentures Old Second Capital Trust II
Junior subordinated debentures |  |  |  |  |  |  |  |  |
Junior subordinated debentures |  |  | $ 58,378,000 | $ 58,378,000 |  |  | $ 58,400,000 | $ 32,600,000 | $ 25,800,000
Period of interest payments that may be deferred (in quarters) |  |  |  |  |  | 20 |  |  |
Payments to indentured trustees | $ 19,700,000 | $ 19,700,000 |  |  | $ 1,100,000 |  |  |  |

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- Definition The period up to which the interest payments may be deferred. + References No definition available. + Details
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- Definition The cash outflow for accrued and unpaid interest on outstanding Trust Preferred Securities. + References No definition available. + Details
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- Details
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- Definition Including the current and noncurrent portions, the carrying value of junior subordinated long-term debt owed to unconsolidated subsidiary trusts as of the balance sheet date. Such debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets and was initially scheduled to be repaid after one year or beyond the normal operating cycle if longer. + 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 210.9-03.16) -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 16 -Article 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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