Securities (Policy)

6 Months Ended

Dec. 31, 2012

Securities [Abstract]

Federal Home Loan Bank Stock [Policy Text Block]

Federal Home Loan Bank Stock

Federal law requires a member institution of the Federal Home Loan Bank ("FHLB") system to hold stock of its district FHLB according to a predetermined formula.  This stock is restricted in that it can only be sold to the FHLB or to another member institution, and all sales of FHLB stock must be at par.  As a result of these restrictions, FHLB stock is carried at cost.  FHLB stock is held as a long-term investment and its value is determined based on the ultimate recoverability of the par value.  Impairment of this investment is evaluated quarterly and is a matter of judgment that reflects management's view of the FHLB's long-term performance, which includes factors such as the following:   its operating performance; the severity and duration of declines in the fair value of its net assets related to its capital stock amount; its commitment to make payments required by law or regulation and the level of such payments in relation to its operating performance; the impact of legislative and regulatory changes on the FHLB, and accordingly, on the members of the FHLB; and its liquidity and funding position.  After evaluating these considerations, Greene County Bancorp, Inc. concluded that the par value of its investment in FHLB stock will be recovered and, therefore, no other-than-temporary impairment charge was recorded during the periods ended December 31, 2012 or 2011.