2.4.0.81020 - Disclosure - Corporate Structuretruefalsefalse1false falsefalseD2013Q2YTDhttp://www.sec.gov/CIK0001542299duration2013-01-01T00:00:002013-06-30T00:00:001true 1gtwn_ReorganizationAbstractgtwn_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Corporate Structure2false 2us-gaap_RestructuringAndRelatedActivitiesDisclosureTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00<div style="font-size:10.0pt;font-family:Times New Roman;"> (2)           Corporate Structure   In conjunction with its reorganization into the mutual holding company structure, on January 5, 2005, the Bank (i) converted to a stock savings bank as the successor to the Bank in its mutual form; (ii) organized Georgetown Bancorp, Inc., (“Georgetown Federal”) as a federally-chartered corporation that owns 100% of the common stock of the Bank (in stock form); and (iii) organized Georgetown Bancorp, MHC as a federally-chartered mutual holding company that owned 56.7% of the Common Stock of Georgetown Federal as of June 30, 2012. On November 28, 2011, the Boards of Directors of Georgetown Federal, Georgetown Bancorp, MHC and the Bank each unanimously adopted a Plan of Conversion or Reorganization of the Mutual Holding Company pursuant to which Georgetown Bancorp, MHC  undertook a “second-step” conversion and now ceases to exist. Georgetown Bancorp, MHC reorganized from a two-tier mutual holding company structure to a fully public stock holding company structure effective July 11, 2012, and, as a result, the Bank is now the wholly-owned subsidiary of the Company.   As a result of the second-step conversion, all shares and per share amounts in the consolidated statements of comprehensive income and notes to consolidated financial statements have been restated giving retroactive recognition to the second-step exchange ratio of 0.72014-to-one. Options presented under the Company’s 2009 Equity Incentive Plan, common shares held by the Bank’s Employee Stock Ownership Plan (“ESOP”) and shares of restricted stock before the second-step conversion were also exchanged using the exchange ratio of 0.72014-to-one. Additionally, all treasury shares were retired as part of the second-step conversion. </div>falsefalsefalsenonnum:textBlockItemTypenaThe entire disclosure for restructuring and related activities. Description of restructuring activities such as exit and disposal activities, include facts and circumstances leading to the plan, the expected plan completion date, the major types of costs associated with the plan activities, total expected costs, the accrual balance at the end of the period, and the periods over which the remaining accrual will be settled.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 146 -Paragraph 20 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4) -URI http://asc.fasb.org/extlink&oid=6394695&loc=d3e140904-122747 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=6394695&loc=d3e140864-122747 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 false0Corporate StructurefalseCorporate StructureUnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.georgetownsb.com/role/DisclosureCorporateStructure12