2.4.0.8121 - Disclosure - Summary of Significant Accounting Policies (Details)truefalsefalse1false falsefalseP04_01_2013To06_30_2013http://www.sec.gov/CIK0001025877duration2013-04-01T00:00:002013-06-30T00:00:00sharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli02false falsefalseP04_01_2012To06_30_2012http://www.sec.gov/CIK0001025877duration2012-04-01T00:00:002012-06-30T00:00:00sharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli03false falsefalseP01_01_2013To06_30_2013http://www.sec.gov/CIK0001025877duration2013-01-01T00:00:002013-06-30T00:00:00sharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli04false falsefalseP01_01_2012To06_30_2012http://www.sec.gov/CIK0001025877duration2012-01-01T00:00:002012-06-30T00:00:00sharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli01true 4us-gaap_WeightedAverageNumberOfSharesOutstandingAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Weighted-average shares for basic and diluted earnings per share2false 5us-gaap_WeightedAverageNumberOfSharesOutstandingBasicus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse71923507192350falsefalsefalse2truefalsefalse37173853717385falsefalsefalse3truefalsefalse71923507192350falsefalsefalse4truefalsefalse37173853717385falsefalsefalsexbrli:sharesItemTypesharesNumber of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1448-109256 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Weighted-Average Number of Common Shares Outstanding -URI http://asc.fasb.org/extlink&oid=6528421 false1Weighted-average common shares outstanding (basic)3false 5us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse3555135551falsefalsefalse2truefalsefalse2296422964falsefalsefalse3truefalsefalse3322333223falsefalsefalse4truefalsefalse1574515745falsefalsefalsexbrli:sharesItemTypesharesThe sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 false1Dilutive effect of assumed exercise of stock options4false 5us-gaap_WeightedAverageNumberOfDilutedSharesOutstandingus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalsetotalLabel1truefalsefalse72279017227901falsefalsefalse2truefalsefalse37403493740349falsefalsefalse3truefalsefalse72255737225573falsefalsefalse4truefalsefalse37331303733130falsefalsefalsexbrli:sharesItemTypesharesThe average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1505-109256 true1Weighted-average common shares outstanding (diluted)falseSummary of Significant Accounting Policies (Details)UnKnownNoRoundingUnKnownUnKnowntruefalsefalseSheethttp://www.dcbfinancialcorp.com/role/SummaryOfSignificantAccountingPoliciesDetails44