Greene County Bancorp (GCBC) 10-K 26 Sep 14 2014 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
	Jun. 30, 2014	Sep. 12, 2014	Dec. 31, 2013
Document and Entity Information [Abstract]	'	'	'
Entity Registrant Name	'GREENE COUNTY BANCORP INC	'	'
Entity Central Index Key	'0001070524	'	'
Current Fiscal Year End Date	'--06-30	'	'
Entity Well-known Seasoned Issuer	'No	'	'
Entity Voluntary Filers	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Filer Category	'Smaller Reporting Company	'	'
Entity Public Float	'	'	$36,743,000
Entity Common Stock, Shares Outstanding	'	4,214,757	'
Document Fiscal Year Focus	'2014	'	'
Document Fiscal Period Focus	'FY	'	'
Document Type	'10-K	'	'
Amendment Flag	'false	'	'
Document Period End Date	30-Jun-14	'	'

Consolidated_Statements_of_Fin

Consolidated Statements of Financial Condition (USD $)	Jun. 30, 2014	Jun. 30, 2013
In Thousands, unless otherwise specified
ASSETS	'	'
Cash and cash equivalents	$13,809	$6,222
Long term certificate of deposit	250	250
Securities available for sale, at fair value	56,151	69,644
Securities held to maturity, at amortized cost (fair value $181,932 at June 30, 2014; $177,660 at June 30, 2013)	181,946	176,519
Federal Home Loan Bank stock, at cost	1,561	1,388
Loans	405,841	365,839
Allowance for loan losses	-7,419	-7,040
Unearned origination fees and costs, net	887	627
Net loans receivable	399,309	359,426
Premises and equipment	14,307	14,349
Accrued interest receivable	2,710	2,663
Foreclosed real estate	473	296
Prepaid expenses and other assets	3,645	2,848
Total assets	674,161	633,605
LIABILITIES AND SHAREHOLDERS' EQUITY	'	'
Noninterest bearing deposits	67,446	57,926
Interest bearing deposits	522,128	500,513
Total deposits	589,574	558,439
Borrowings from FHLB, short-term	3,150	10,600
Borrowings from FHLB, long-term	14,500	4,000
Accrued expenses and other liabilities	5,737	4,458
Total liabilities	612,961	577,497
SHAREHOLDERS' EQUITY	'	'
Preferred stock, Authorized - 1,000,000 shares; Issued - None	0	0
Common stock, par value $0.10 per share; Authorized - 12,000,000 shares; Issued - 4,305,670 shares Outstanding 4,213,757 shares at June 30, 2014, and 4,192,654 shares at June 30, 2013	431	431
Additional paid-in capital	11,208	11,168
Retained earnings	51,305	46,112
Accumulated other comprehensive loss	-1,050	-750
Treasury stock, at cost 91,913 shares at June 30, 2014, and 113,016 shares at June 30, 2013	-694	-853
Total shareholders' equity	61,200	56,108
Total liabilities and shareholders' equity	$674,161	$633,605

Consolidates_Statements_of_Fin

Consolidates Statements of Financial Condition (Parenthetical) (USD $)	Jun. 30, 2014	Jun. 30, 2013
In Thousands, except Share data, unless otherwise specified
ASSETS	'	'
Held-to-maturity Securities, fair value	$181,932	$177,660
SHAREHOLDERS' EQUITY	'	'
Preferred Stock, Shares Authorized (in shares)	1,000,000	1,000,000
Preferred Stock, Shares Issued (in shares)	0	0
Common Stock, Par or Stated Value Per Share (in dollars per share)	$0.10	$0.10
Common Stock, Shares Authorized (in shares)	12,000,000	12,000,000
Common Stock, Shares, Issued (in shares)	4,305,670	4,305,670
Common Stock, Shares, Outstanding (in shares)	4,213,757	4,192,654
Treasury Stock, Shares (in shares)	91,913	113,016

Consolidated_Statements_of_Inc

Consolidated Statements of Income (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Interest income:	'	'
Loans	$18,521	$18,169
Investment securities - taxable	646	726
Mortgage-backed securities	2,544	3,434
Investment securities - tax exempt	2,037	1,689
Interest bearing deposits and federal funds sold	40	42
Total interest income	23,788	24,060
Interest expense:	'	'
Interest on deposits	2,222	2,618
Interest on borrowings	165	199
Total interest expense	2,387	2,817
Net interest income	21,401	21,243
Provision for loan losses	1,500	1,746
Net interest income after provision for loan losses	19,901	19,497
Noninterest income:	'	'
Service charges on deposit accounts	2,558	2,599
Debit card fees	1,565	1,369
Investment services	424	308
E-commerce fees	96	101
Net gain on sale of available-for-sale securities	0	10
Other operating income	637	608
Total noninterest income	5,280	4,995
Noninterest expense:	'	'
Salaries and employee benefits	9,281	8,617
Occupancy expense	1,322	1,249
Equipment and furniture expense	436	591
Service and data processing fees	1,452	1,580
Computer software, supplies and support	400	356
Advertising and promotion	278	369
FDIC insurance premiums	371	332
Legal and professional fees	822	663
Other	1,754	1,692
Total noninterest expense	16,116	15,449
Income before provision for income taxes	9,065	9,043
Provision for income taxes	2,537	2,672
Net income	$6,528	$6,371
Basic earnings per share (in dollars per share)	$1.55	$1.52
Basic average shares outstanding (in shares)	4,205,945	4,187,340
Diluted earnings per share (in dollars per share)	$1.54	$1.51
Diluted average shares outstanding (in shares)	4,241,256	4,223,499
Dividends per share (in dollars per share)	$0.70	$0.70

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014		Jun. 30, 2013
Consolidated Statements of Comprehensive Income [Abstract]	'		'
Net Income	$6,528		$6,371
Other comprehensive (loss) income:	'		'
Unrealized holding losses on available for sale securities, net of income taxes of ($327) and ($526), respectively	-518		-833
Reclassification adjustment for gain on sale of securities realized in net income net of income taxes of $- and ($4) respectively	0	[1]	-6	[1]
Accretion of unrealized loss on securities transferred to held to maturity, net of income taxes of $175 and $13, respectively	277	[2]	20	[2]
Pension actuarial loss, net of income taxes of ($37) and ($65)	-59	[3]	-104	[3]
Total other comprehensive loss, net of taxes	-300		-923
Comprehensive income	$6,228		$5,448
[1]	Amounts are included in net gain on sale of available for sale securities on the Consolidated Statements of Income in total non-interest income.
[2]	The accretion of the unrealized holding losses in accumulated other comprehensive income (loss) at the date of transfer partially offsets the amortization of the difference between the par value and fair value of the investment securities at the date of transfer, and is an adjustment of interest income.
[3]	These accumulated other comprehensive income components are included in the computation of net periodic benefit cost and are included in salaries and employee benefit expense within noninterest expense (see Note 9 for additional details).

Consolidated_Statements_of_Com1

Consolidated Statements of Comprehensive Income (Parenthetical) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Consolidated Statements of Comprehensive Income [Abstract]	'	'
Income taxes, unrealized holding gain (losses) on available for sale securities	($327)	($526)
Income taxes, reclassification adjustment for gain on securities realized in net income	0	-4
Income taxes, accretion of unrealized loss on securities transferred to held-to-maturity	175	13
Income taxes, pension actuarial gain	($37)	($65)

Consolidated_Statements_of_Cha

Consolidated Statements of Changes in Shareholders' Equity (USD $)		Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Total
In Thousands
Balance at Jun. 30, 2012		$431	$11,119	$41,869	$173	($928)	$52,664
Options exercised		'	49	'	'	75	124
Tax benefit of stock based compensation		'	27	'	'	'	27
Dividends declared	[1]	'	'	-2,128	'	'	-2,128
Net Income		'	'	6,371	'	'	6,371
Other comprehensive loss, net of taxes		'	'	'	-923	'	-923
Balance at Jun. 30, 2013		431	11,168	46,112	-750	-853	56,108
Options exercised		'	13	'	'	159	172
Dividends declared	[1]	'	'	-1,335	'	'	-1,335
Net Income		'	'	6,528	'	'	6,528
Other comprehensive loss, net of taxes		'	'	'	-300	'	-300
Balance at Jun. 30, 2014		$431	$11,208	$51,305	($1,050)	($694)	$61,200
[1]	Dividends declared were $0.70 per share for the years ended June 30, 2014 and 2013. This is based on total number of shares outstanding. However, Greene County Bancorp, MHC, , the owner of 54.7% of the Company's shares outstanding waived its right to receive dividends during the year ended June 30, 2014 and the six months ended June 30, 2013, but did not waive its right to receive dividends declared during the six months ended December 31, 2012. The MHC's ability to waive the receipt of dividends is dependent upon annual approval of its members as well as receiving the non-objection of the Federal Reserve Board. The MHC may waive dividends for the 12 months subsequent to its latest approval which was obtained on February 19, 2014.

Consolidated_Statements_of_Cha1

Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) (USD $)	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Dividends per share (in dollars per share)	$0.70	$0.70
Ownership Percentage (in hundredths)	54.70%	54.70%

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities:	'	'
Net Income	$6,528	$6,371
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation	617	737
Deferred income tax expense	18	324
Net amortization of premiums and discounts	1,815	1,569
Net amortization of deferred loan costs and fees	340	282
Provision for loan losses	1,500	1,746
Net gain on sale of available-for-sale securities	0	-10
Loss (gain) on sale of foreclosed real estate	57	-7
Excess tax benefit from share-based payment arrangements	-27	0
Net decrease in accrued income taxes	-682	-1,306
Net (increase) decrease in accrued interest receivable	-47	25
Net (increase) decrease in prepaids and other assets	-88	1,096
Net increase (decrease) in other liabilities	1,354	-492
Net cash provided by operating activities	11,385	10,335
Securities available for sale:	'	'
Proceeds from maturities	2,515	8,740
Proceeds from sale of securities	0	10
Purchases of securities	-7,341	-10,387
Principal payments on securities	5,862	17,415
Securities held to maturity:	'	'
Proceeds from maturities	29,069	23,755
Purchases of securities	-31,610	-73,902
Principal payments on securities	7,363	19,229
Net (purchase) redemption of Federal Home Loan Bank Stock	-173	356
Purchase of long term certificate of deposit	0	-250
Net increase in loans receivable	-42,388	-35,178
Proceeds from sale of foreclosed real estate	431	446
Purchases of premises and equipment	-575	-187
Net cash used by investing activities	-36,847	-49,953
Cash flows from financing activities	'	'
Net decrease in short-term FHLB advances	-7,450	-3,400
Proceeds from long-term FHLB advances	10,500	4,000
Repayment of long-term FHLB advances	0	-7,000
Payment of cash dividends	-1,335	-2,128
Proceeds from issuance of stock options	172	124
Excess tax benefit from share-based payment arrangements	27	0
Net increase in deposits	31,135	46,502
Net cash provided by financing activities	33,049	38,098
Net increase (decrease) in cash and cash equivalents	7,587	-1,520
Cash and cash equivalents at beginning of period	6,222	7,742
Cash and cash equivalents at end of period	13,809	6,222
Non-cash investing activities:	'	'
Foreclosed loans transferred to foreclosed real estate	665	475
Securities transferred from available for sale to held to maturity	11,735	0
Cash paid during the period:	'	'
Interest	2,376	2,845
Income taxes	$3,201	$3,654

Summary_of_significant_account

Summary of significant accounting policies	12 Months Ended
	Jun. 30, 2014
Summary of significant accounting policies [Abstract]	'
Summary of significant accounting policies	'
	Note 1. Summary of significant accounting policies
	Basis of Presentation
	The consolidated financial statements include the accounts of Greene County Bancorp, Inc. (the “Company”) and its subsidiary, The Bank of Greene County (the “Bank”) and the Bank’s subsidiaries Greene County Commercial Bank and Greene Property Holdings, Ltd.  All material inter-company accounts and transactions have been eliminated.  Amounts in the prior year’s consolidated financial statements have been reclassified whenever necessary to conform to the current year’s presentation. These reclassifications had no effect on net income or shareholders’ equity as previously reported.  The accompanying consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”).  These consolidated financial statements consider events that occurred through the date the consolidated financial statements were issued.
	Nature of Operations
	Greene County Bancorp, Inc.’s primary business is the ownership and operation of its subsidiaries.  The Bank of Greene County has twelve full-service offices and an operations center located in its market area consisting of the Hudson Valley of New York.    The Bank of Greene County is primarily engaged in the business of attracting deposits from the general public in The Bank of Greene County’s market area, and investing such deposits, together with other sources of funds, in loans and investment securities.  Greene County Commercial Bank’s primary business is to attract deposits from, and provide banking services to, local municipalities.  Greene Property Holdings, Ltd. was formed as a New York corporation that has elected under the Internal Revenue Code to be a real estate investment trust.  Currently, certain mortgages and notes held by The Bank of Greene County are transferred and beneficially owned by Greene Property Holdings, Ltd.  The Bank of Greene County continues to service these loans.
	Charter
	Greene County Bancorp, Inc. and its parent mutual holding company (the “MHC”) are federally chartered and, effective July 2011, regulated and examined by the Federal Reserve Board.  The Bank of Greene County, the subsidiary of Greene County Bancorp, Inc., is also federally chartered and regulated and examined by the Office of the Comptroller of the Currency (the “OCC”).
	Greene County Commercial Bank is a New York State-chartered financial institution, regulated and examined by the New York State Banking Department.  Greene Property Holdings, Ltd. is a New York corporation.
	As a federally chartered savings bank, The Bank of Greene County must maintain at least 65% of its “portfolio assets” (total assets minus goodwill and other intangible assets, office property and specified liquid investments up to 20% of total assets) in certain “qualified thrift investments” (primarily loans to purchase, refinance, construct, improve or repair domestic residential housing, home equity loans, securities backed by or representing an interest in mortgages on domestic residential housing, and Federal Home Loan Bank stock) in at least 9 months out of every 12 month period.  A savings institution that fails the qualified thrift lender test is subject to certain operating restrictions and may be required to convert to a bank charter.  At June 30, 2014 and 2013 and for the years then ended, The Bank of Greene County satisfied the requirement of the qualified thrift lender test.
	Use of Estimates
	The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period.  Actual results could materially differ from those estimates.  Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the allowance for loan losses and the assessment of other-than-temporary security impairment.
	While management uses available information to recognize losses on loans, future additions to the allowance for loan losses (the “Allowance”) may be necessary, based on changes in economic conditions, asset quality or other factors.  In addition, various regulatory authorities, as an integral part of their examination process, periodically review the Allowance.  Such authorities may require the Company to recognize additions to the Allowance based on their judgments of information available to them at the time of their examination.
	Greene County Bancorp, Inc. makes an assessment to determine whether there have been any events or economic circumstances to indicate that a security on which there is an unrealized loss is impaired on an other-than-temporary basis.  The Company considers many factors including the severity and duration of the impairment; the intent and ability of the Company to hold the security for a period of time sufficient for a recovery in value; recent events specific to the issuer or industry; and for debt securities, intent to sell the security, whether it is more likely than not we will be required to sell the security before recovery, whether loss is expected, external credit ratings and recent downgrades.  Securities on which there is an unrealized loss that is deemed to be other-than-temporary are written down to fair value through earnings.
	Cash and Cash Equivalents
	Cash and cash equivalents include cash on hand, amounts due from banks, interest-bearing deposits at other financial institutions, investments (with original maturity of three months or less), and overnight federal funds sold.  The amounts of interest-bearing deposits included as cash equivalents at June 30, 2014 and 2013 were $4.8 million and $809,000, respectively.
	Securities
	Greene County Bancorp, Inc. has classified its investments in debt and equity securities as either available-for-sale or held-to-maturity.  Available-for-sale securities are reported at fair value, with net unrealized gains and losses reflected in the accumulated other comprehensive income component of shareholders’ equity, net of applicable income taxes.  Held-to-maturity securities are those debt securities which management has the intent and the Company has the ability to hold to maturity and are reported at amortized cost.  The Company does not have trading securities in its portfolio.
	Realized gains or losses on security transactions are reported in earnings and computed using the specific identification cost basis.  Fair values of securities are based on quoted market prices, where available.  Valuation of securities is further described in Note 16.  Amortization of bond premiums and accretion of bond discounts are amortized over the expected life of the securities using the interest method.
	When the fair value of a held to maturity or available for sale security is less than its amortized cost basis, an assessment is made as to whether other-than-temporary impairment (“OTTI”) is present.  The Company considers numerous factors when determining whether a potential OTTI exists and the period over which the debt security is expected to recover.  The principal factors considered are (1) the length of time and the extent to which the fair value has been less than the amortized cost basis, (2) the financial condition of the issuer (and guarantor, if any) and adverse conditions specifically related to the security, industry or geographic area, (3) failure of the issuer of the security to make scheduled interest or principal payments, (4) any changes to the rating of the security by a rating agency, and (5) the presence of credit enhancements, if any, including the guarantee of the federal government or any of its agencies.
	For debt securities, OTTI is considered to have occurred if (1) the Company intends to sell the security before recovery of its amortized cost basis, (2) it is more likely than not the Company will be required to sell the security before recovery of its amortized cost basis, or (3) if the present value of expected cash flows is not sufficient to recover the entire amortized cost basis.  In determining the present value of expected cash flows, the Company discounts the expected cash flows at the effective interest rate implicit in the security at the date of acquisition.  In estimating cash flows expected to be collected, the Company uses available information with respect to security prepayment speeds, default rates and severity.  In determining whether OTTI has occurred for equity securities, the Company considers the applicable factors described above and the intent and ability of the Company to retain its investment in the issuer for a period of time sufficient to allow for any anticipated recovery in fair value.
	For debt securities, credit-related OTTI is recognized in earnings while noncredit related OTTI on securities not expected to be sold is recognized in other comprehensive income/loss (“OCI”).  Credit-related OTTI is measured as the difference between the present value of an impaired security’s expected cash flows and its amortized cost basis.  Noncredit-related OTTI is measured as the difference between the fair value of the security and its amortized cost less any credit-related losses recognized.  For securities classified as held to maturity, the amount of OTTI recognized in OCI is accreted to the credit-adjusted expected cash flow amounts of the securities over future periods.  For equity securities, the entire amount of OTTI is recognized in earnings.
	Loans
	Loans are stated at unpaid principal balances, less the allowance for loan losses and net deferred loan origination fees and costs.  Interest on loans is accrued and credited to income based upon the principal amount outstanding.  Unearned discount on installment loans is recognized as income over the term of the loan, principally using a method that approximates the effective yield method.  Nonrefundable loan fees and related direct costs are deferred and amortized over the life of the loan as an adjustment to loan yield using the effective interest method.
	Allowance for Loan Losses
	The allowance for loan losses is maintained by a provision for loan losses charged to expense, reduced by net charge-offs and increased by recoveries of loans previously charged off.  The level of the allowance is based on management’s evaluation of the collectability of the loan portfolio, including the nature of the portfolio, credit concentrations, trends in historical loss experience, specific impaired loans, payment status of the loan and economic conditions.  The Bank of Greene County considers smaller balance residential mortgages, home equity loans, nonresidential, business loans and installment loans to customers as small, homogeneous loans, which are evaluated for impairment collectively based on historical loss experience.  Larger balance residential, nonresidential mortgage and business loans are reviewed individually and considered impaired if it is probable that The Bank of Greene County will not be able to collect scheduled payments of principal and interest when due, according to the contractual terms of the loan agreements.  The measurement of impaired loans is generally based on the fair value of the underlying collateral, less estimated costs to sell.  The majority of The Bank of Greene County loans, including most nonaccrual loans, are small homogenous loan types adequately supported by collateral.  As a result, the level of impaired loans may only be a portion of nonaccrual loans.  Loans that are delinquent or slow paying may not be impaired.  Management considers the payment status of loans in the process of evaluating the adequacy of the allowance for loan losses among other factors.  Loans that are either delinquent a minimum of 60 days or are on nonaccrual status, and are not individually considered impaired, are either designated as Special Mention or Substandard, and the allocation of the allowance for loan loss is based upon the risk associated with such designation.
	Income Recognition on Impaired and Nonaccrual loans
	The Bank of Greene County generally places a loan, including impaired loans, on nonaccrual status when it is specifically determined to be impaired or when principal and interest is delinquent for 90 days or more.  Any unpaid interest previously accrued on these loans is reversed from income.  When a loan is specifically determined to be impaired, collection of interest and principal are generally applied as a reduction to principal outstanding until the collection of the remaining balance is reasonably assured.  Interest income on all nonaccrual loans is recognized on a cash basis.
	Foreclosed Real Estate (FRE)
	FRE consists of properties acquired through mortgage loan foreclosure proceedings or in full or partial satisfaction of loans.  FRE is initially recorded at fair value (less estimated costs to sell) at the date the collateral is acquired establishing a new cost basis and any shortfall is charged to the allowance for loan losses at this time.  Subsequently, management reviews the value of FRE and write-downs, if any, are charged to expense.  All expenses and income related to FRE are included in consolidated results of operations as part of noninterest expense.
	Premises and Equipment
	Premises and equipment are stated at cost less accumulated depreciation.  Depreciation is computed using principally the straight-line method over the estimated useful lives of the related assets (39 years for building and improvements, 3-8 years for furniture and equipment).  Maintenance and repairs are typically charged to expense when incurred.  Gains and losses from sales or other dispositions of premises and equipment are included in consolidated results of operations.  Leasehold improvements are amortized over the lesser of the related terms of the leases or their useful life.
	Treasury Stock
	Common stock repurchases are recorded at cost and then held as treasury stock.  From time to time, Greene County Bancorp, Inc. may repurchase shares of common stock under an approved plan if, in its judgment, such shares are an attractive investment, in view of the current price at which the common stock is trading relative to Greene County Bancorp, Inc.’s earnings per share, book value per share and general market and economic factors.  On August 22, 2007, the Board of Directors authorized a stock repurchase program pursuant of up to 5% of its outstanding shares (excluding shares held by Greene County Bancorp, MHC, the Company's mutual holding company), or up to 92,346 shares.  As of June 30, 2014, the Company had repurchased 62,478 shares in accordance with the stock repurchase program.  There were no shares repurchased during fiscal 2014 or 2013.  The Company does not intend to repurchase any additional shares under this stock repurchase program.  Common stock may also be acquired in order to have shares available for issuance under the Stock Option Plans.  See Note 10 to the consolidated financial statements, Stock-Based Compensation, for more information regarding these plans.  No repurchases of stock were made during the year ended June 30, 2014 or 2013.
	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 years ended June 30, 2014 or 2013.
	Advertising
	Greene County Bancorp, Inc. follows a policy of charging the costs of advertising to expense as incurred.  Advertising costs included in other operating expenses were $278,000 and $369,000 for the years ended June 30, 2014 and 2013, respectively.
	Transfers of Financial Assets
	Transfers of financial assets are accounted for as sales when control over the assets has been surrendered.  Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Company, (2) the transferee obtains the right (free of conditions that constrain it from taking advantage of the right) to pledge or exchange the transferred assets, and (3) the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity.
	Off-Balance Sheet Credit Related Financial Instruments
	In the ordinary course of business, the Company has entered into commitments to extend credit, including commitments under lines of credit.  Such financial instruments are recorded when they are funded.
	Income Taxes
	Provisions for income taxes are based on taxes currently payable or refundable and deferred income taxes on temporary differences between the tax basis of assets and liabilities and their reported amounts in the consolidated financial statements.  Deferred tax assets and liabilities are reported at currently enacted income tax rates applicable to the period in which the deferred tax assets and liabilities are expected to be realized or settled.
	Earnings Per Share (EPS)
	Basic EPS is computed by dividing net income by the weighted average number of common shares outstanding during the period.  Diluted earnings per share is computed in a manner similar to that of basic earnings per share except that the weighted-average number of common shares outstanding is increased to include the number of incremental common shares that would have been outstanding under the treasury stock method if all potentially dilutive common shares (such as stock options) issued became vested during the period.  Unallocated common shares held by the ESOP are not included in the weighted-average number of common shares outstanding for either the basic or diluted earnings per share calculations.
	Impact of Recent Accounting Pronouncements
	In January 2014, the Financial Accounting Standards Board (“FASB”) issued an amendment (ASU 2014-04) to its guidance on “Receivables – Troubled Debt Restructurings by Creditors (Subtopic 310-40): Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure”.  This Update has been issued to clarify when an in substance repossession or foreclosure occurs, that is, when a creditor should be considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan such that the loan receivable should be derecognized and the real estate property recognized. An entity can elect to adopt the amendments in this Update using either a modified retrospective transition method or a prospective transition method. The amendments in this Update are effective for public business entities for annual periods, and interim periods within those annual periods, beginning after December 15, 2014. Early adoption is permitted.  The adoption of these amendments is not expected to have an effect on our consolidated results of operations or financial position.
	In May 2014, the FASB issued and amendment (ASU 2014-09) to is guidance on “Revenue from Contracts with Customers (Topic 606).  The objective of the ASU is to align the recognition of revenue with the transfer of promised goods or services provided to customers in an amount that reflects the consideration which the entity expects to be entitled in exchange for those goods or services.  This ASU will replace most existing revenue recognition guidance under GAAP when it becomes effective.  The amendments in this ASU are effective for public business entities for annual periods, beginning after December 15, 2016.  The Company has not yet determined the effect of the standard on its ongoing financial reporting.

Balances_at_other_banks

Balances at other banks	12 Months Ended
	Jun. 30, 2014
Balances at other banks [Abstract]	'
Balances at other banks	'
	Note 2.  Balances at other banks
	The Bank of Greene County is required to maintain certain reserves of vault cash and/or deposits with the Federal Reserve Bank.  The amount of this reserve requirement, included in cash and due from banks, was $1.2 million and $1.1 million at June 30, 2014 and 2013, respectively.

Securities

Securities	12 Months Ended
	Jun. 30, 2014
Securities [Abstract]	'
Securities	'
	Note 3.  Securities
	Greene County Bancorp, Inc.’s current policies generally limit securities investments to U.S. Government and securities of government sponsored enterprises, federal funds sold, municipal bonds, corporate debt obligations and certain mutual funds.  In addition, the Company’s policies permit investments in mortgage-backed securities, including securities issued and guaranteed by Fannie Mae, Freddie Mac, and GNMA, and collateralized mortgage obligations issued by these entities.  As of June 30, 2014, all mortgage-backed securities including collateralized mortgage obligations were securities of government sponsored enterprises, no private-label mortgage-backed securities or collateralized mortgage obligations were held in the securities portfolio.  The Company’s investments in state and political subdivisions securities generally are municipal obligations that are general obligations supported by the general taxing authority of the issuer, and in some cases are insured.  The obligations issued by school districts are supported by state aid.  Primarily, these investments are issued by municipalities within New York State.
	The Company’s current securities investment strategy utilizes a risk management approach of diversified investing among three categories: short-, intermediate- and long-term. The emphasis of this approach is to increase overall investment securities yields while managing interest rate risk.  The Company will only invest in high quality securities as determined by management’s analysis at the time of purchase.  The Company does not engage in any derivative or hedging transactions, such as interest rate swaps or caps.
	Securities at June 30, 2014 consisted of the following:
	(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
	Securities available for sale:
	U.S. government sponsored enterprises	$	10,648	$	250	$	-	$	10,898
	State and political subdivisions		1,324		23		-		1,347
	Mortgage-backed securities-residential		9,345		213		13		9,545
	Mortgage-backed securities-multi-family		29,268		89		339		29,018
	Asset-backed securities		15		-		2		13
	Corporate debt securities		4,811		375		16		5,170
	Total debt securities		55,411		950		370		55,991
	Equity securities		62		98		-		160
	Total securities available for sale		55,473		1,048		370		56,151
	Securities held to maturity:
	U.S. government sponsored enterprises		2,000		-		102		1,898
	State and political subdivisions		91,634		787		204		92,217
	Mortgage-backed securities-residential		22,785		1,150		-		23,935
	Mortgage-backed securities-multi-family		64,605		759		2,381		62,983
	Other securities		922		1		24		899
	Total securities held to maturity		181,946		2,697		2,711		181,932
	Total securities	$	237,419	$	3,745	$	3,081	$	238,083
	Securities at June 30, 2013 consisted of the following:
				Gross		Gross		Estimated
		Amortized		Unrealized		Unrealized		Fair
	(In thousands)	Cost		Gains		Losses		Value
	Securities available for sale:
	U.S. government sponsored enterprises	$	12,729	$	260	$	-	$	12,989
	State and political subdivisions		1,849		29		20		1,858
	Mortgage-backed securities-residential		7,340		193		-		7,533
	Mortgage-backed securities-multi-family		42,096		289		466		41,919
	Asset-backed securities		17		-		1		16
	Corporate debt securities		4,827		380		31		5,176
	Total debt securities		68,858		1,151		518		69,491
	Equity securities		68		85		-		153
	Total securities available for sale		68,926		1,236		518		69,644
	Securities held to maturity:
	U.S. treasury securities		5,500		17		-		5,517
	U.S. government sponsored enterprises		2,999		16		113		2,902
	State and political subdivisions		82,801		362		755		82,408
	Mortgage-backed securities-residential		29,077		1,515		9		30,583
	Mortgage-backed securities-multi-family		55,086		1,236		1,093		55,229
	Other securities		1,056		-		35		1,021
	Total securities held to maturity		176,519		3,146		2,005		177,660
	Total securities	$	245,445	$	4,382	$	2,523	$	247,304
	The following table shows fair value and gross unrealized losses, aggregated by security category and length of time that individual securities have been in a continuous unrealized loss position, at June 30, 2014.
		Less Than 12 Months				More Than 12 Months				Total
	(In thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
	Securities available for sale:
	Mortgage-backed securities-residential	$	4,302	$	13	$	-	$	-	$	4,302	$	13
	Mortgage-backed securities-multi-family		4,448		5		19,404		334		23,852		339
	Asset-backed securities		-		-		13		2		13		2
	Corporate debt securities		767		16		-		-		767		16
	Total securities available for sale		9,517		34		19,417		336		28,934		370
	Securities held to maturity:
	U.S. government sponsored enterprises		1,898		102		-		-		1,898		102
	State and political subdivisions		6,693		175		1,815		29		8,508		204
	Mortgage-backed securities-multi-family		26,522		1,617		15,440		764		41,962		2,381
	Other securities		130		2		401		22		531		24
	Total securities held to maturity		35,243		1,896		17,656		815		52,899		2,711
	Total securities	$	44,760	$	1,930	$	37,073	$	1,151	$	81,833	$	3,081
	The following table shows fair value and gross unrealized losses, aggregated by security category and length of time that individual securities have been in a continuous unrealized loss position, at June 30, 2013.
	Less Than 12 Months				More Than 12 Months				Total
(In thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Securities available for sale:
State and political subdivisions	$	791	$	20	$	-	$	-	$	791	$	20
Mortgage-backed securities-multi-family		33,298		466		-		-		33,298		466
Asset-backed securities		-		-		16		1		16		1
Corporate debt securities		758		31		-		-		758		31
Total securities available for sale		34,847		517		16		1		34,863		518
Securities held to maturity:
U.S. government sponsored enterprises		1,887		113		-		-		1,887		113
State and political subdivisions		28,597		745		1,597		10		30,194		755
Mortgage-backed securities-residential		1,228		9		-		-		1,228		9
Mortgage-backed securities-multi-family		33,044		1,093		-		-		33,044		1,093
Other securities		753		35		-		-		753		35
Total securities held to maturity		65,509		1,995		1,597		10		67,106		2,005
Total securities	$	100,356	$	2,512	$	1,613	$	11	$	101,969	$	2,523
At June 30, 2014, there were 51 securities which have been in a continuous unrealized loss position for less than 12 months, consisting of 15 mortgage-backed securities, 33 state and political subdivisions, one corporate debt security, one U.S. government sponsored enterprise, and one other security. Also at June 30, 2014, there were 27 securities with a continuous unrealized loss position of more than 12 months, consisting of 13 mortgage-backed securities, 11 state and political subdivisions, one asset-backed security, and two other securities.  Management evaluated these securities considering the factors as outlined in Note 1 of these consolidated financial statements, and based on this evaluation, the Company does not consider these investments to be other-than-temporarily impaired at June 30, 2014.  Management believes that the reasons for the decline in fair value are due to interest rates, widening credit spreads and market illiquidity at the reporting date.
During the year ended June 30, 2014, $11.7 million of securities available-for-sale were transferred to held-to-maturity and included primarily mortgage-backed securities.  These securities were transferred at fair value which reflected a net unrealized loss of $805,000.  This unrealized loss is being accreted to other comprehensive income over the remaining average lives of these securities.
The following table presents realized gains and losses on securities for the years ended June 30, 2014 and 2013:
(In thousands)	2014		2013
Gross realized gains on sale of available-for-sale securities	$	-	$	10
Other-than-temporary impairment losses		-		-
Net realized gains (losses)	$	-	$	10
The estimated fair values of debt securities at June 30, 2014, by contractual maturity are shown below.  Expected maturities may differ from contractual maturities, because issuers may have the right to call or prepay obligations with or without call or prepayment penalties.
(In thousands)
Available for sale debt securities	Amortized Cost		Fair Value
Within one year	$	3,265	$	3,280
After one year through five years		8,891		9,312
After five years through ten years		4,627		4,823
After ten years		-		-
Total available for sale debt securities		16,783		17,415
Mortgage-backed and asset-backed securities		38,628		38,576
Equity securities		62		160
Total available for sale securities		55,473		56,151
Held to maturity debt securities
Within one year		29,835		29,879
After one year through five years		38,047		38,564
After five years through ten years		19,286		19,254
After ten years		7,388		7,317
Total held to maturity debt securities		94,556		95,014
Mortgage-backed		87,390		86,918
Total held to maturity securities		181,946		181,932
Total securities	$	237,419	$	238,083
As of June 30, 2014 and 2013, respectively, securities with an aggregate fair value of $210.0 million and $200.9 million were pledged as collateral for deposits in excess of FDIC insurance limits for various municipalities placing deposits with Greene County Commercial Bank.  As of June 30, 2014 and 2013, securities with an aggregate fair value of $5.2 million were pledged as collateral for potential borrowings at the Federal Reserve Bank discount window.  Greene County Bancorp, Inc. did not participate in any securities lending programs during the years ended June 30, 2014 or 2013.

Loans

Loans	12 Months Ended
	Jun. 30, 2014
Loans [Abstract]	'
Loans	'
	Note 4.  Loans
	Loan segments and classes at June 30, 2014 and 2013 are summarized as follows:
		At June 30,
	(In thousands)	2014			2013
	Real estate mortgages:
	Residential	$	227,373		$	212,526
	Nonresidential		114,066			91,482
	Construction and land		4,563			6,214
	Multifamily		4,059			5,511
	Total real estate mortgages		350,061			315,733
	Home equity loans		20,578			20,371
	Consumer installment		4,208			4,078
	Commercial loans		30,994			25,657
	Total gross loans		405,841			365,839
	Allowance for loan losses		(7,419	)		(7,040	)
	Deferred fees and costs		887			627
	Total net loans	$	399,309		$	359,426
	At June 30, 2014 and 2013, loans to officers and directors were immaterial as a percentage of our loan portfolio.
	Credit Quality Indicators
	Management closely monitors the quality of the loan portfolio and has established a loan review process designed to help grade the quality and profitability of the Company’s loan portfolio.  The credit quality grade helps management make a consistent assessment of each loan relationship’s credit risk. Consistent with regulatory guidelines, The Bank of Greene County provides for the classification of loans considered being of lesser quality.  Such ratings coincide with the “Substandard,” “Doubtful” and “Loss” classifications used by federal regulators in their examination of financial institutions. Generally, an asset is considered Substandard if it is inadequately protected by the current net worth and paying capacity of the obligors and/or the collateral pledged. Substandard assets include those characterized by the distinct possibility that the insured financial institution will sustain some loss if the deficiencies are not corrected. Assets classified as Doubtful have all the weaknesses inherent in assets classified Substandard with the added characteristic that the weaknesses present make collection or liquidation in full, on the basis of currently existing facts, highly questionable and improbable. Assets classified as Loss are those considered uncollectible and of such little value that their continuance as assets without the establishment of a full loss reserve and/or charge-off is not warranted. Assets that do not currently expose the Company to sufficient risk to warrant classification in one of the aforementioned categories but otherwise possess weaknesses are designated “Special Mention.”   Management also maintains a listing of loans designated “Watch.” These loans represent borrowers with declining earnings, strained cash flow, increasing leverage and/or weakening market fundamentals that indicate above average risk.
	When The Bank of Greene County classifies problem assets as either Substandard or Doubtful, it generally establishes a specific valuation allowance or “loss reserve” in an amount deemed prudent by management.  General allowances represent loss allowances that have been established to recognize the inherent risk associated with lending activities, but which, unlike specific allowances, have not been allocated to particular loans.  When The Bank of Greene County identifies problem loans as being impaired, it is required to evaluate whether the Bank will be able to collect all amounts due either through repayments or the liquidation of the underlying collateral.  If it is determined that impairment exists, the Bank is required either to establish a specific allowance for losses equal to the amount of impairment of the assets, or to charge-off such amount.  The Bank of Greene County’s determination as to the classification of its loans and the amount of its valuation allowance is subject to review by its regulatory agencies, which can order the establishment of additional general or specific loss allowances.  The Bank of Greene County reviews its portfolio monthly to determine whether any assets require classification in accordance with applicable regulations.
	The Bank primarily has four segments within its loan portfolio that it considers when measuring credit quality: real estate loans, home equity, consumer installment and commercial loans.  The real estate portfolio consists of residential, nonresidential, and construction loan classes. The inherent risk within the loan portfolio varies depending upon each of these loan types.
	The Bank of Greene County’s primary lending activity is the origination of residential mortgage loans, including home equity loans, which are collateralized by residences.   Generally, residential mortgage loans are made in amounts up to 89.9% of the appraised value of the property.  However, The Bank of Greene County will originate residential mortgage loans with loan-to-value ratios of up to 95.0%, with private mortgage insurance.  In the event of default by the borrower, The Bank of Greene County will acquire and liquidate the underlying collateral. By originating the loan at a loan-to-value ratio of 89.9% or less or obtaining private mortgage insurance, The Bank of Greene County limits its risk of loss in the event of default.  However, the market values of the collateral may be adversely impacted by declines in the economy.  Home equity loans may have an additional inherent risk if The Bank of Greene County does not hold the first mortgage.  The Bank of Greene County may stand in a secondary position in the event of collateral liquidation resulting in a greater chance of insufficiency to meet all obligations.
	Construction lending generally involves a greater degree of risk than other residential mortgage lending.  The repayment of the construction loan is, to a great degree, dependent upon the successful and timely completion of the construction of the subject property within specified cost limits.  The Bank of Greene County completes inspections during the construction phase prior to any disbursements.  The Bank of Greene County limits its risk during the construction as disbursements are not made until the required work for each advance has been completed.  Construction delays may further impair the borrower’s ability to repay the loan.
	Loans collateralized by nonresidential mortgage loans, and multi-family loans, such as apartment buildings generally are larger than residential loans and involve a greater degree of risk. Commercial mortgage loans often involve large loan balances to single borrowers or groups of related borrowers. Payments on these loans depend to a large degree on the results of operations and management of the properties or underlying businesses, and may be affected to a greater extent by adverse conditions in the real estate market or the economy in general. Accordingly, the nature of nonresidential mortgage loans makes them more difficult for management to monitor and evaluate.
	Consumer loans generally have shorter terms and higher interest rates than residential mortgage loans. In addition, consumer loans expand the products and services offered by The Bank of Greene County to better meet the financial services needs of its customers.  Consumer loans generally involve greater credit risk than residential mortgage loans because of the difference in the nature of the underlying collateral.  Repossessed collateral for a defaulted consumer loan may not provide an adequate source of repayment of the outstanding loan balance because of the greater likelihood of damage, loss or depreciation in the underlying collateral. The remaining deficiency often does not warrant further substantial collection efforts against the borrower beyond obtaining a deficiency judgment. In addition, consumer loan collections depend on the borrower’s personal financial stability.  Furthermore, the application of various federal and state laws, including federal and state bankruptcy and insolvency laws, may limit the amount that can be recovered on such loans.
	Commercial lending generally involves greater risk than residential mortgage lending and involves risks that are different from those associated with residential and nonresidential mortgage lending. Real estate lending is generally considered to be collateral-based, with loan amounts based on fixed loan-to-collateral values, and liquidation of the underlying real estate collateral is viewed as the primary source of repayment in the event of borrower default. Although commercial loans may be collateralized by equipment or other business assets, the liquidation of collateral in the event of a borrower default is often an insufficient source of repayment because equipment and other business assets may be obsolete or of limited use, among other things. Accordingly, the repayment of a commercial loan depends primarily on the creditworthiness of the borrower (and any guarantors), while liquidation of collateral is a secondary and often insufficient source of repayment.
	Loan balances by internal credit quality indicator as of June 30, 2014 are shown below.
	(In thousands)	Performing			Watch			Special Mention		Substandard			Total
	Residential mortgage	$	223,772		$	221		$	99	$	3,281		$	227,373
	Nonresidential mortgage		109,281			-			1,789		2,996			114,066
	Residential construction and land		3,005			-			-		-			3,005
	Commercial construction		1,558			-			-		-			1,558
	Multi-family		3,946			-			-		113			4,059
	Home equity		20,239			-			-		339			20,578
	Consumer installment		4,208			-			-		-			4,208
	Commercial loans		29,686			-			385		923			30,994
	Total gross loans	$	395,695		$	221		$	2,273	$	7,652		$	405,841
	Loan balances by internal credit quality indicator as of June 30, 2013 are shown below.
	(In thousands)	Performing			Watch			Special Mention		Substandard			Total
	Residential mortgage	$	207,606		$	294		$	302	$	4,324		$	212,526
	Nonresidential mortgage		87,509			-			2,197		1,776			91,482
	Residential construction and land		2,691			-			-		-			2,691
	Commercial construction		2,466			-			-		1,057			3,523
	Multi-family		4,785			-			-		726			5,511
	Home equity		20,099			221			23		28			20,371
	Consumer installment		4,073			5			-		-			4,078
	Commercial loans		24,454			-			516		687			25,657
	Total gross loans	$	353,683		$	520		$	3,038	$	8,598		$	365,839
	The Company had no loans classified Doubtful or Loss at June 30, 2014 or 2013.
	Nonaccrual Loans
	Management places loans on nonaccrual status once the loans have become 90 days or more delinquent.  A nonaccrual loan is defined as a loan in which collectability is questionable and therefore interest on the loan will no longer be recognized on an accrual basis.  A loan is not placed back on accrual status until the borrower has demonstrated the ability and willingness to make timely payments on the loan.    A loan does not have to be 90 days delinquent in order to be classified as nonaccrual.   Nonaccrual loans consisted primarily of loans secured by real estate at June 30, 2014 and 2013.  While the Bank makes every reasonable effort to work with the borrowers to collect amounts due, the number of loans in process of foreclosure has remained historically high over the past several years.  These high levels have been the result of adverse changes within the economy and increases in local unemployment.   These levels are also due in part to the extended length of time required to meet all of the legal requirements mandated by New York state law prior to a foreclosure sale, which may be in excess of two years. Loans on nonaccrual status totaled $5.9 million at June 30, 2014 of which $3.0 million were in the process of foreclosure.  Included in nonaccrual loans were $922,000 of loans which were less than 90 days past due at June 30, 2014, but have a recent history of delinquency greater than 90 days past due. These loans will be returned to accrual status once they have demonstrated a history of timely payments.  Included in total loans past due were $925,000 of loans which were making payments pursuant to forbearance agreements.  Under the forbearance agreements, the customers have made arrangements with the Bank to bring the loans current over a specified period of time (resulting in an insignificant delay in repayment).  During this term of the forbearance agreement, the Bank has agreed not to continue foreclosure proceedings.  Loans on nonaccrual status totaled $6.3 million at June 30, 2013 of which $4.9 million were in the process of foreclosure.  Included in nonaccrual loans, $781,000 were less than 90 days past due at June 30, 2013, but have a recent history of delinquency greater than 90 days past due.
	The following table sets forth information regarding delinquent and/or nonaccrual loans as of June 30, 2014:
	(In thousands)	30-59 days past due			60-89 days past due			90 days or more past due		Total past due			Current		Total Loans		Loans on Non-accrual
	Residential mortgage	$	1,047		$	290		$	1,938	$	3,275		$	224,098	$	227,373	$	2,473
	Nonresidential mortgage		-			504			2,688		3,192			110,874		114,066		2,775
	Residential construction and land		-			-			-		-			3,005		3,005		-
	Commercial construction		-			-			-		-			1,558		1,558		-
	Multi-family		-			-			-		-			4,059		4,059		-
	Home equity		260			-			339		599			19,979		20,578		339
	Consumer installment		51			-			-		51			4,157		4,208		-
	Commercial loans		509			123			278		910			30,084		30,994		312
	Total gross loans	$	1,867		$	917		$	5,243	$	8,027		$	397,814	$	405,841	$	5,899
The following table sets forth information regarding delinquent and/or nonaccrual loans as of June 30, 2013:
(In thousands)	30-59 days past due			60-89 days past due			90 days or more past due		Total past due			Current		Total Loans		Loans on Non-accrual
Residential mortgage	$	1,255		$	165		$	3,875	$	5,295		$	207,231	$	212,526	$	3,599
Nonresidential mortgage		215			978			1,655		2,848			88,634		91,482		2,018
Residential construction and land		38			-			-		38			2,653		2,691		-
Commercial construction		-			-			-		-			3,523		3,523		-
Multi-family		144			-			463		607			4,904		5,511		463
Home equity		269			221			28		518			19,853		20,371		51
Consumer installment		34			5			-		39			4,039		4,078		-
Commercial loans		530			78			82		690			24,967		25,657		195
Total gross loans	$	2,485		$	1,447		$	6,103	$	10,035		$	355,804	$	365,839	$	6,326
The Bank of Greene County had accruing loans delinquent 90 days or more as of June 30, 2014 totaling $266,000 and had accruing loans delinquent more than 90 days as of June 30, 2013 totaling $559,000.  The loans delinquent more than 90 days and accruing consist of loans that are well collateralized and the borrowers have demonstrated the ability and willingness to pay.  The borrowers have made arrangements with the Bank to bring the loan current within a specified time period and have made a series of payments as agreed.
The table below details additional information related to nonaccrual loans:
	For the years ended June 30,
(In thousands)	2014			2013
Interest income that would have been recorded if loans had been performing in accordance with original terms	$	352		$	433
Interest income that was recorded on nonaccrual loans		128			158
Impaired Loan Analysis
The Company identifies impaired loans and measures the impairment in accordance with FASB ASC subtopic “Receivables – Loan Impairment.”  Management may consider a loan impaired once it is classified as nonaccrual and when it is probable that the borrower will be unable to repay the loan according to the original contractual terms of the loan agreement or the loan is restructured in a troubled debt restructuring.  It should be noted that management does not evaluate all loans individually for impairment.  Generally, The Bank of Greene County considers residential mortgages, home equity loans and installment loans as small, homogeneous loans, which are evaluated for impairment collectively based on historical loan experience and other factors.  In contrast, large commercial mortgage, construction, multi-family, business loans and select larger balance residential mortgage loans are reviewed individually and considered impaired if it is probable that The Bank of Greene County will not be able to collect scheduled payments of principal and interest when due, according to the contractual terms of the loan agreement.   The measurement of impaired loans is generally based on the fair value of the underlying collateral.  The majority of The Bank of Greene County loans, including most nonaccrual loans, are small homogenous loan types adequately supported by collateral.  Management considers the payment status of loans in the process of evaluating the adequacy of the allowance for loan losses among other factors.  Loans that are either delinquent a minimum of 60 days or are on nonaccrual status, and are not individually evaluated for impairment, are either designated as Special Mention or Substandard, and the allocation of the allowance for loan loss is based upon the risk associated with such designation.
The tables below detail additional information on impaired loans at the date or periods indicated:
	As of June 30, 2014								For the year ended June 30, 2014
(In thousands)	Recorded Investment			Unpaid Principal			Related Allowance		Average Recorded Investment			Interest Income Recognized
With no related allowance recorded:
Residential mortgage	$	206		$	206		$	-	$	330		$	14
Nonresidential mortgage		461			461			-		518			29
Home equity		96			96			-		24			3
		763			763			-		872			46
With an allowance recorded:
Residential mortgage		2,700			2,790			441		2,978			64
Nonresidential mortgage		2,572			2,959			338		2,346			63
Commercial construction		-			-			-		350			17
Multi-family		-			-			-		193			-
Home equity		200			200			87		150			-
Commercial loans		603			603			3		606			39
		6,075			6,552			869		6,623			183
Residential mortgage		2,906			2,996			441		3,308			78
Nonresidential mortgage		3,033			3,420			338		2,864			92
Commercial construction		-			-			-		350			17
Multi-family		-			-			-		193			-
Home equity		296			296			87		174			3
Commercial loans		603			603			3		606			39
	$	6,838		$	7,315		$	869	$	7,495		$	229
	As of June 30, 2013								For the year ended June 30, 2013
(In thousands)	Recorded Investment			Unpaid Principal			Related Allowance		Average Recorded Investment			Interest Income Recognized
With no related allowance recorded:
Residential mortgage	$	852		$	852		$	-	$	272		$	14
Nonresidential mortgage		783			783			-		1,146			66
Commercial loans		-			-			-		81			17
		1,635			1,635			-		1,499			97
With an allowance recorded:
Residential mortgage		2,582			2,632			520		2,604			77
Nonresidential mortgage		1,339			1,339			305		1,182			33
Commercial construction		1,057			1,057			331		1,066			50
Multi-family		463			463			16		850			26
Home equity		-			-			-		193			4
Commercial loans		610			610			7		575			37
		6,051			6,101			1,179		6,470			227
Residential mortgage		3,434			3,484			520		2,876			91
Nonresidential mortgage		2,122			2,122			305		2,328			99
Commercial construction		1,057			1,057			331		1,066			50
Multi-family		463			463			16		850			26
Home equity		-			-			-		193			4
Commercial loans		610			610			7		656			54
	$	7,686		$	7,736		$	1,179	$	7,969		$	324
The table below details loans that have been modified as a troubled debt restructuring during the year ended June 30, 2014.
(Dollars in thousands)	Number of Contracts			Pre-Modification Outstanding Recorded Investment			Post-Modification Outstanding Recorded Investment		Current Outstanding Recorded Investment
Residential mortgage		3		$	575		$	575	$	566
Nonresidential mortgage		5			1,789			1,848		1,589
These loans have been classified as troubled debt restructurings due to concessions granted to the debtors that The Bank of Greene County would not otherwise consider as a result of financial difficulties of the borrowers.  For these loans, concessions consisted of any combination of the following: additional funds were advanced, the interest rate was reduced and/or the term extended.   At June 30, 2014, two of the eight loans were returned to accrual status but the remaining loans modified during the period as a troubled debt restructuring are currently included in non-accrual loans.  If the borrower performs under the terms of the modification, and the ultimate collectability of all amounts contractually due under the modified terms is not in doubt, these loans will be returned to accrual status.   These loans identified as a troubled debt restructuring have been evaluated for impairment and the impact to the allowance for loan loss was immaterial.
The table below details loans that have been modified as a troubled debt restructuring during the year ended June 30, 2013.
(Dollars in thousands)	Number of Contracts			Pre-Modification Outstanding Recorded Investment			Post-Modification Outstanding Recorded Investment		Current Outstanding Recorded Investment
Residential mortgage		4		$	836		$	742	$	739
Nonresidential mortgage		2			625			657		657
The table below details loans that have been modified as troubled debt restructurings during the previous twelve months which have subsequently defaulted during the year ended June 30, 2014:
(Dollars in thousands)	Number of Contracts			Recorded Investment			Allowance for Loan Loss
Residential mortgage		2		$	284		$	65
Nonresidential mortgage		2			894			192
The Company had no loans that had been modified as troubled debt restructurings during the twelve months prior to June 30, 2013 which had subsequently defaulted during the year ended June 30, 2013.
Allowance for Loan Losses
The allowance for loan losses is established through a provision for loan losses based on management’s evaluation of the risk inherent in the loan portfolio, the composition of the loan portfolio, specific impaired loans and current economic conditions.  Such evaluation, which includes a review of certain identified loans on which full collectability may not be reasonably assured, considers among other matters, the estimated net realizable value or the fair value of the underlying collateral, economic conditions, payment status of the loan, historical loan loss experience and other factors that warrant recognition in providing for the loan loss allowance.  In addition, various regulatory agencies, as an integral part of their examination process, periodically review The Bank of Greene County’s allowance for loan losses.  Such agencies may require The Bank of Greene County to recognize additions to the allowance based on their judgment about information available to them at the time of their examination. The Bank of Greene County considers smaller balance residential mortgages, home equity loans, commercial loans and installment loans to customers as small, homogeneous loans, which are evaluated for impairment collectively based on historical loss experience.  Larger balance residential, commercial mortgage and business loans are viewed individually and considered impaired if it is probable that The Bank of Greene County will not be able to collect scheduled payments of principal and interest when due, according to the contractual terms of the loan agreements.  The measurement of impaired loans is generally based on the fair value of the underlying collateral.  The Bank of Greene County charges loans off against the allowance for credit losses when it becomes evident that a loan cannot be collected within a reasonable amount of time or that it will cost the Bank more than it will receive, and all possible avenues of repayment have been analyzed, including the potential of future cash flow, the value of the underlying collateral, and strength of any guarantors or co-borrowers.  Generally, consumer loans and smaller business loans (not secured by real estate) in excess of 90 days are charged-off against the allowance for loan losses, unless equitable arrangements are made.   For loans secured by real estate, a charge-off is recorded when it is determined that the collection of all or a portion of a loan may not be collected and the amount of that loss can be reasonably estimated.
The following tables set forth the activity and allocation of the allowance for loan losses by loan category during and at the periods indicated.  The allowance is allocated to each loan category based on historical loss experience, current economic conditions, and other considerations.
Activity for the year ended June 30, 2014
(In thousands)	Balance June 30, 2013			Charge-offs			Recoveries		Provision			Balance June 30, 2014
Residential mortgage	$	2,627		$	420		$	10	$	514		$	2,731
Nonresidential mortgage		2,476			309			-		769			2,936
Residential construction and land		37			-			-		5			42
Commercial construction		392			-			-		(354	)		38
Multi-family		139			24			7		(63	)		59
Home equity		275			44			-		130			361
Consumer installment		222			215			75		158			240
Commercial loans		809			205			4		203			811
Unallocated		63			-			-		138			201
Total	$	7,040		$	1,217		$	96	$	1,500		$	7,419
	Allowance for Loan Losses						Loans Receivable
	Ending Balance June 30, 2014						Ending Balance June 30, 2014 Impairment Analysis
	Impairment Analysis
(In thousands)	Individual Evaluated			Collectively Evaluated			Individual Evaluated		Collectively Evaluated
Residential mortgage	$	441		$	2,290		$	2,906	$	224,467
Nonresidential mortgage		338			2,598			3,033		111,033
Residential construction and land		-			42			-		3,005
Commercial construction		-			38			-		1,558
Multi-family		-			59			-		4,059
Home equity		87			274			296		20,282
Consumer installment		-			240			-		4,208
Commercial loans		3			808			603		30,391
Unallocated		-			201			-		-
Total	$	869		$	6,550		$	6,838	$	399,003
Activity for the year ended June 30, 2013
(In thousands)	Balance June 30, 2012			Charge-offs			Recoveries		Provision			Balance June 30, 2013
Residential mortgage	$	2,163		$	421		$	-	$	885		$	2,627
Nonresidential mortgage		2,076			233			-		633			2,476
Residential construction and land		19			-			-		18			37
Commercial construction		407			-			-		(15	)		392
Multi-family		337			-			-		(198	)		139
Home equity		187			-			-		88			275
Consumer installment		207			246			88		173			222
Commercial loans		645			71			-		235			809
Unallocated		136			-			-		(73	)		63
Total	$	6,177		$	971		$	88	$	1,746		$	7,040
	Allowance for Loan Loss						Loans Receivable
	Ending Balance June 30, 2013						Ending Balance June 30, 2013 Impairment Analysis
	Impairment Analysis
(In thousands)	Individually Evaluated			Collectively Evaluated			Individually Evaluated		Collectively Evaluated
Residential mortgage	$	520		$	2,107		$	3,434	$	209,092
Nonresidential mortgage		305			2,171			2,122		89,360
Residential construction & land		-			37			-		2,691
Commercial construction		331			61			1,057		2,466
Multi-family		16			123			463		5,048
Home equity		-			275			-		20,371
Consumer installment		-			222			-		4,078
Commercial loans		7			802			610		25,047
Unallocated		-			63			-		-
Total	$	1,179		$	5,861		$	7,686	$	358,153

Premises_and_Equipment

Premises and Equipment	12 Months Ended
	Jun. 30, 2014
Premises and Equipment [Abstract]	'
Premises and Equipment	'
	Note 5.  Premises and Equipment
	A summary of premises and equipment at June 30, 2014 and 2013, is as follows:
	(In thousands)	2014			2013
	Land	$	2,883		$	2,883
	Building and improvements		15,411			14,888
	Furniture and equipment		3,572			6,741
	Less: accumulated depreciation		(7,559	)		(10,163	)
	Total premises and equipment	$	14,307		$	14,349

Deposits

Deposits	12 Months Ended
	Jun. 30, 2014
Deposits [Abstract]	'
Deposits	'
	Note 6.  Deposits
	Major classifications of deposits at June 30, 2014 and 2013 are summarized as follows:
	(In thousands)	2014		2013
	Noninterest bearing deposits	$	67,446	$	57,926
	Certificates of deposit		48,900		56,181
	Savings deposits		165,227		160,004
	Money market deposits		87,363		85,685
	NOW deposits		220,638		198,643
	Total deposits	$	589,574	$	558,439
	Advance payments by borrowers for taxes and insurance totaling $5,495,000 and $5,048,000 at June 30, 2014 and 2013, respectively, are included in savings deposits.
	Related party deposits are not material.
	The following indicates the amount of certificates of deposit by time remaining to maturity as of June 30, 2014.
	(In thousands)	3 months		3 to 6		7 to 12		Over 12
		or less		Months		Months		Months		Total
	Certificates of deposit less than $100,000	$	10,363	$	7,288	$	5,908	$	8,972	$	32,531
	Certificates of deposit $100,000 or more		5,429		1,831		4,025		5,084		16,369
	Total certificates of deposit	$	15,792	$	9,119	$	9,933	$	14,056	$	48,900
	Scheduled maturities of certificates of deposit at June 30, 2014 were as follows:
	(In thousands)
	The year ended June 30, year end
	2015	$	34,844
	2016		6,136
	2017		3,222
	2018		553
	2019		4,145
		$	48,900

Borrowings

Borrowings	12 Months Ended
	Jun. 30, 2014
Borrowings [Abstract]	'
Borrowings	'
	Note 7.  Borrowings
	During the year ended June 30, 2014, the Company entered into an Irrevocable Letter of Credit Reimbursement Agreement with the Federal Home Loan Bank (“FHLB”), whereby upon The Bank of Greene County’s request, on behalf of Greene County Commercial Bank, an irrevocable letter of credit is issued to secure municipal transactional deposit accounts.   At June 30, 2014, The Bank of Greene County had pledged approximately $206.1 million of its residential mortgage portfolio as collateral for borrowing and stand-by letters of credit at the FHLB.   The maximum amount of funding available from the FHLB was $165.9 million at June 30, 2014, of which $17.7 million in borrowings and $200,000 in stand-by letters of credit were outstanding at June 30, 2014.  There were $3.2 million in short term borrowings outstanding at June 30, 2014.   Interest rates on short term borrowings are determined at the time of borrowing.  The remaining $14.5 million consisted of long-term fixed rate, fixed term advances with a weighted average rate of 1.45% and a weighted average maturity of 48 months.  The Bank has recently increased its level of long-term borrowing to strengthen its overall interest rate risk position, to help mitigate the potential negative impact of rising interest rates.
	The Bank of Greene County also pledges securities as collateral at the Federal Reserve Bank discount window for overnight borrowings.  At June 30, 2014, approximately $5.2 million of collateral was available to be pledged against potential borrowings at the Federal Reserve Bank discount window. There were no balances outstanding with the Federal Reserve Bank at June 30, 2014 or 2013.
	The Bank of Greene County has established unsecured lines of credit with Atlantic Central Bankers Bank and another financial institution for $6.0 million and $5.0 million, respectively.  The lines of credit provide for overnight borrowing and the interest rate is determined at the time of the borrowing.  At June 30, 2014 and 2013 there were no balances outstanding on either of these lines of credit, and there was no activity during the years ended June 30, 2014 and 2013.
	Scheduled maturities of long-term borrowings at June 30, 2014 were as follows:
	(In thousands)
	The year ended June 30,
	2015	$	-
	2016		-
	2017		2,500
	2018		4,500
	2019		5,500
	Due after 2019		2,000
		$	14,500

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive (Loss) Income	12 Months Ended
	Jun. 30, 2014
Accumulated Other Comprehensive (Loss) Income [Abstract]	'
Accumulated Other Comprehensive (Loss) Income	'
	Note 8.  Accumulated Other Comprehensive (Loss) Income
	The components of accumulated other comprehensive loss as of June 30, 2014 and 2013, respectively, are presented in the following table:
	(In thousands)	30-Jun-14			30-Jun-13
	Unrealized gains on available for sale securities, net of tax	$	416		$	441
	Unrealized loss on securities transferred to held to maturity, net of tax		(231	)		(15	)
	Net losses and past service liability for defined benefit plan, net of tax		(1,235	)		(1,176	)
	Accumulated other comprehensive loss	$	(1,050	)	$	(750	)

Employee_Benefit_Plans

Employee Benefit Plans	12 Months Ended
	Jun. 30, 2014
Employee Benefit Plans [Abstract]	'
Employee Benefit Plans	'
	Note 9.  Employee Benefit Plans
	Defined Benefit Plan
	The Bank of Greene County maintains a single-employer defined benefit pension plan (the “Pension Plan”).   Effective January 1, 2006, the Board of Directors of the Bank resolved to exclude from membership in the Pension Plan employees hired on or after January 1, 2006 and elected to cease additional benefit accruals to existing Pension Plan participants effective July 1, 2006.  Substantially all Bank employees who were hired before January 1, 2006 and attained the age of 21 are covered by the Pension Plan.  Under the Pension Plan, retirement benefits are primarily a function of both years of service and level of compensation, at July 1, 2006.   This defined benefit pension plan is accounted for in accordance with FASB ASC Topic 715 guidance on “Compensation – Retirement Benefits, Defined Benefit Plans – Pension”, which requires the Company to recognize in its consolidated financial statements an asset for a plan’s overfunded status or a liability for a plan’s underfunded status. Changes in the funded status of the single-employer defined benefit pension plan are reported as a component of other comprehensive income, net of applicable taxes, in the year in which changes occur.
	Information regarding the single-employer defined benefit pension plan at June 30, 2014 and 2013 is as follows:
	(In thousands)
	Change in projected benefit obligation:	2014			2013
	Benefit obligation at beginning of period	$	4,971		$	4,597
	Interest cost		223			176
	Actuarial loss		297			304
	Benefits paid		(180	)		(106	)
	Benefit obligation at June 30		5,311			4,971
	Change in fair value of plan assets:
	Fair value of plan assets at beginning of period		4,637			2,983
	Actual return on plan assets		430			260
	Employer contributions		-			1,500
	Benefits paid		(180	)		(106	)
	Fair value of plan assets at June 30	$	4,887		$	4,637
	Underfunded status at June 30 included in other liabilities	$	424		$	334
	The Company does not anticipate that it will make any contributions during the year ended June 30, 2015.
	The components of net periodic pension costs related to the defined benefit pension plan for the years ended June 30, 2014 and 2013 were as follows:
	(In thousands)	2014			2013
	Interest cost	$	223		$	176
	Expected return on plan assets		(318	)		(201	)
	Amortization of net loss		89			76
	Net periodic pension (income) cost	$	(6	)	$	51
	The accumulated benefit obligation for the pension plan was $5.3 million and $5.0 million at June 30, 2014 and 2013, respectively.
	Changes in plan assets and benefit obligations recognized in other comprehensive loss during the years ended June 30, 2014 and 2013 consisted of the following:
	(In thousands)	2014			2013
	Actuarial loss on plan assets and benefit obligations	$	96		$	169
	Deferred tax benefit		37			65
	Net change in plan assets and benefit obligations recognized in other comprehensive income	$	59		$	104
	Amounts recognized in our consolidated statements of financial condition related to our pension plan for the years ended June 30, 2014 and 2013 are as follows:
	(In thousands)
	Other liabilities:	2014			2013
	Projected benefit obligation in excess of fair value of pension plan	$	424		$	334
	Accumulated other comprehensive income, net of taxes:
	Net losses and past service liability	$	(1,235	)	$	(1,176	)
	The principal actuarial assumptions used were as follows:
	Projected benefit obligation:	2014			2013
	Discount rate		4.22	%		4.57	%
	Net periodic pension expense:
	Amortization period, in years		15			16
	Discount rate		4.57	%		3.93	%
	Expected long-term rate of return on plan assets		7	%		7	%
	The discount rate used in the measurement of the Company’s pension obligation is based on the Citigroup Pension Liability Index based on expected benefit payments of the plan. The discount rates are evaluated at each measurement date to give effect to changes in the general interest rates. The expected long-term rate of return on plan assets reflects the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the projected benefit obligation.  The selected rate considers the historical and expected future investment trends of the present and expected assets in the plan.  Since this is a frozen plan, the compensation rate is zero percent.
	The weighted average asset allocation and fair value of our funded pension plan at June 30, 2014 and 2013 was as follows:
	(Dollars in thousands)	2014						2013
		Fair Value						Fair Value
	Money market accounts	$	15			0.3	%	$	15	0.3	%
	Mutual funds		4,872			99.7	%		4,622	99.7	%
	Total plan assets	$	4,887			100	%	$	4,637	100	%
	The fair value of assets within the pension plan was determined utilizing a quoted price in active markets at the measurement date. As such, these assets are classified as Level 1 within the “Fair Value Measurement” hierarchy.
	The target allocation for investment in mutual funds is 80% consisting of short-term and intermediate-term fixed income bond funds and 20% large cap value funds.  This allocation is consistent with our goal of preserving capital while achieving investment results that will contribute to the proper funding of pension obligations and cash flow requirements.  Asset rebalancing is performed on a quarterly basis, with adjustments made when the investment mix varies by more than 5% from the target.
	The amortization of accumulated other comprehensive income associated with the single employer defined benefit pension plan for the year ended June 30, 2015 is expected to be nominal.
	Expected benefit payments under the pension plan over the next ten years at June 30, 2014 are as follows:
	(In thousands)
	2015	$	189
	2016		188
	2017		220
	2018		219
	2019		234
	2020-2024		1,233
	Defined Contribution Plan
The Bank of Greene County also participates in a defined contribution plan (the “Contribution Plan”) covering substantially all employees who have completed three months of service.  The plan includes Section 401(k) and thrift provisions as defined under the Internal Revenue Code.  The provisions permit employees to contribute up to 50% of their total compensation on a pre-tax basis.    The Bank of Greene County matches employee contributions dollar for dollar for the first 3% and then 50% of the employee contributions up to the next 3%.  Company contributions associated with the contribution plan amounted to $215,000 and $210,000 in the years ended June 30, 2014 and 2013, respectively.
ESOP
All Bank employees meeting certain age and service requirements are eligible to participate in the ESOP.  Participant’s benefits become fully vested after three years of service.  During the years ended June 30, 2014 and 2013, the Board of Directors authorized the payment of $84,000 and $84,000 respectively, to the ESOP trustee for the purposes of purchasing additional shares of stock to be allocated to employees as of December 2014 and 2013, respectively.   ESOP expense was $84,000 for the years ended June 30, 2014 and 2013.  There were no unearned shares at June 30, 2014 or 2013.
SERP
On June 21, 2010, the Board of Directors of The Bank of Greene County adopted The Bank of Greene County Supplemental Executive Retirement Plan (the “SERP Plan”), effective as of July 1, 2010. The SERP Plan benefits certain key senior executives of the Bank who are selected by the Board to participate.
The SERP Plan is intended to provide a benefit from the Bank upon retirement, death or disability or voluntary or involuntary termination of service (other than “for cause”). Accordingly, the SERP Plan obligates the Bank to make an allocation to each executive’s account on the first business day of each July and permits each executive to defer up to 50% of his or her base salary and 100% of his or her annual bonus to the SERP Plan, subject to the requirements of Section 409A of the Internal Revenue Code (“Code”). In addition, the Bank may, but is not required to, make additional discretionary contributions to the executives’ accounts from time to time. An executive becomes vested in the Bank’s contributions after 10 calendar years of service following the effective date of the SERP Plan, and is fully vested immediately for all deferral of salary and bonus. However, the Executive will vest in the present value of his or her account in the event of death, disability or a change in control of the Bank or the Company. In the event the executive is terminated involuntarily or resigns for good reason following a change in control, the present value of all remaining Bank contributions is accelerated and paid to the executive’s account, subject to potential reduction to avoid an excess parachute payment under Code Section 280G. In the event of the executive’s death, disability or termination within two years after a change in control, executive’s account will be paid in a lump sum to the executive or his beneficiary, as applicable. In the event the executive is entitled to a benefit from the SERP Plan due to retirement or other termination of employment, the benefit will be paid in 10 annual installments.
The net periodic pension costs related to the SERP for the years ended June 30, 2014 and 2013 were $167,000, and $98,000, respectively, consisting primarily of service and interest costs.  The total liability for the SERP was $899,000 and $595,200 as of June 30, 2014 and June 30, 2013, respectively.

StockBased_Compensation

Stock-Based Compensation	12 Months Ended
	Jun. 30, 2014
Stock-Based Compensation [Abstract]	'
Stock-Based Compensation	'
	Note 10.  Stock-Based Compensation
	Stock Option Plan
	On July 29, 2008, shareholders approved the Greene County Bancorp, Inc. 2008 stock-based compensation plan (the “2008 Option Plan”) which allows the Company to issue up to 180,000 options and stock appreciation rights.  On August 19, 2008, the Board of Directors granted 164,500 options and stock appreciation rights (in tandem) to buy stock under the 2008 Option Plan at an exercise price of $12.50, the fair value of the stock on that date.  These options have a 10-year term and vested over a three year period upon meeting specific earnings performance goals.
	A summary of the Company’s stock option activity and related information for its option plans for the years ended June 30, 2014 and 2013 is as follows:
			2014								2013
							Weighted Average								Weighted Average
							Exercise								Exercise
							Price								Price
			Options				Per Share				Options				Per Share
	Outstanding at beginning of year			87,400			$	12.5				103,700			$	12.5
	Exercised			(27,965	)		$	12.5				(16,300	)		$	12.5
	Outstanding at period end			59,435			$	12.5				87,400			$	12.5
	Exercisable at period end			59,435			$	12.5				87,400			$	12.5
	The following table presents stock options outstanding and exercisable at June 30, 2014:
	Options Outstanding and Exercisable
	Range of Exercise Prices				Number Outstanding				Weighted Average Remaining Contractual Life				Weighted Average Exercise Price
	$	12.5				59,435				4.25			$	12.5
	The Company recognized $19,000 in compensation costs and related income tax benefit of $6,000 related to the 2008 Option Plan for the year ended June 30, 2013.  At June 30, 2014 and 2013, all outstanding shares were fully vested, with no remaining compensation cost to be recognized. There were no stock options granted during the years ended June 30, 2014 or 2013.  The total intrinsic value of the options exercised during the year ended June 30, 2014 was approximately $378,000.  The total intrinsic value of the options exercised during the year ended June 30, 2013 was approximately $126,000
	Phantom Stock Option Plan and Long-term Incentive Plan
	Greene County Bancorp, Inc. (the “Company”) entered into the Greene County Bancorp, Inc. 2011 Phantom Stock Option and Long-Term Incentive Plan (the “Plan”), to promote the long-term financial success of the Company and its subsidiaries by providing a means to attract, retain and reward individuals who contribute to such success and to further align their interests with those of the Company’s shareholders.  The Plan is intended to provide benefits to employees and directors of the Company or any subsidiary as designated by the Compensation Committee of the Board of Directors of the Company (“Committee”).   A total of 900,000 phantom stock options are available for awards under the Plan.  A phantom stock option represents the right to receive a cash payment on the date the award vests in the participant equal to the positive difference between the strike price on the grant date and the book value of a share of the Company stock on the determination date, which is the last day of the plan year that is the end of the third plan year after the grant date of the award, unless otherwise specified by the Committee.  The strike price will be the price established by the Committee, which will not be less than 100% of the book value of a share on a specified date, as determined under generally accepted accounting principles (GAAP) as of the last day of the quarter ending on or immediately preceding the valuation date with adjustments made, in the sole discretion of the Committee, to exclude accumulated other comprehensive income (loss).  During the years ended June 30, 2014 and 2013, phantom stock options totaling 236,308 and 243,473, respectively, were awarded under the Plan.  During the year ended June 30, 2014, 6,840 options were forfeited, and 26,506 options vested early and were paid in cash due to the death of the grantee.  At June 30, 2014, 216,540 options, with a value of $714,500 fully vested and will be paid in cash during the first quarter of the year ended June 30, 2015.  The Company recognized $786,800 and $147,300 in compensation costs related to the Plan during the years ended June 30, 2014 and 2013, respectively.  The total liability for the long-term incentive plan was $1.2 million and $396,000 at June 30, 2014 and 2013, respectively.

Earnings_Per_Share

Earnings Per Share	12 Months Ended
	Jun. 30, 2014
Earnings Per Share [Abstract]	'
Earnings Per Share	'
	Note 11.  Earnings Per Share
	Basic earnings per share is computed by dividing net income by the weighted average number of common shares outstanding during the period.  Diluted earnings per share is computed in a manner similar to that of basic earnings per share except that the weighted-average number of common shares outstanding is increased to include the number of incremental common shares that would have been outstanding under the treasury stock method if all potentially dilutive common shares (such as stock options) issued became vested during the period.  There were no anti-dilutive securities or contracts outstanding during the years ended June 30, 2014 and 2013.
		Net Income		Weighted Average Number Of Shares Outstanding		Earnings per Share
	Year ended June 30, 2014	$	6,528,000
	Basic				4,205,945	$	1.55
	Effect of dilutive stock options				35,311		(0.01	)
	Diluted				4,241,256	$	1.54
	Year ended June 30, 2013	$	6,371,000
	Basic				4,187,340	$	1.52
	Effect of dilutive stock options				36,159		(0.01	)
	Diluted				4,223,499	$	1.51

Income_Taxes

Income Taxes	12 Months Ended
	Jun. 30, 2014
Income Taxes [Abstract]	'
Income Taxes	'
	Note 12.  Income Taxes
	The provision for income taxes consists of the following for the years ended June 30, 2014 and 2013:
	(In thousands)	2014			2013
	Current expense:
	Federal	$	2,246		$	2,070
	State		273			278
	Total current expense		2,519			2,348
	Deferred expense		18			324
	Total provision for income taxes	$	2,537		$	2,672
	The effective tax rate differs from the federal statutory rate as follows for the years ended June 30, 2014 and 2013:
		2014			2013
	Tax based on federal statutory rate		34	%		34	%
	State income taxes, net of federal benefit		1.02			1.04
	Tax-exempt income		(7.97	)		(6.65	)
	Other, net		0.94			1.16
	Total income tax expense		27.99	%		29.55	%
	The components of the deferred tax assets and liabilities at June 30 were as follows:
	(In thousands)	2014			2013
	Deferred tax assets:
	Allowance for loan losses	$	2,870		$	2,724
	Pension benefits		164			129
	Other		653			553
	Total deferred tax assets		3,687			3,406
	Deferred tax liabilities:
	Depreciation		1,405			1,470
	Loan costs		634			514
	Real estate investment trust income		1,614			1,406
	Unrealized gains on securities		116			269
	Total deferred tax liabilities		3,769			3,659
	Net deferred tax liability included in other liabilities	$	(82	)	$	(253	)
	Income tax accounting guidance results in two components of income tax expense: current and deferred.  Current income tax expense reflects taxes to be paid or refunded for the current period by applying the provisions of the enacted tax law to the taxable income or excess of deductions over revenues.  The Company determines deferred income taxes using the liability (or balance sheet) method.  Under this method, the net deferred tax asset or liability is based on the tax effects of the differences between the book and tax bases of assets and liabilities and enacted changes in tax rates and laws are recognized in the period in which they occur.
	Deferred income tax expense results from changes in deferred tax assets and liabilities between periods.  Deferred tax assets are reduced by a valuation allowance if, based on the weight of the evidence available, it is more likely than not that some portion or all of a deferred tax asset will not be realized.
	The Company accounts for uncertain tax positions if it is more likely than not, based on technical merits, that the tax position will be realized or sustained upon examination.  The term more likely than not means a likelihood of more than 50 percent; the terms examined and upon examination also include resolution of the related appeals or litigation processes, if any.  A tax position that meets the more-likely-than-not recognition threshold is initially and subsequently measured as the largest amount of tax benefit that has a greater than 50 percent likelihood of being realized upon settlement with a taxing authority that has full knowledge of all relevant information.  The determination of whether or not a tax position has met the more-likely-than-not recognition threshold considers the facts, circumstances, and information available at the reporting date and is subject to management’s judgments.
	The Company recognizes interest and penalties on income taxes, if any, as a component of the provision for income taxes.
	As of June 30, 2014 and 2013, the Company did not have any uncertain tax positions.  The Company does not expect to have any changes in unrecognized tax benefits as a result of settlements with taxing authorities during the next twelve months.  As of June 30, 2014, tax years ended June 30, 2011 through June 30, 2013, remain open and are subject to Federal and State taxing authority examination.

Commitments_and_Contingent_Lia

Commitments and Contingent Liabilities	12 Months Ended
	Jun. 30, 2014
Commitments and Contingent Liabilities [Abstract]	'
Commitments and Contingent Liabilities	'
	Note 13.  Commitments and Contingent Liabilities
	In the normal course of business there are various commitments and contingent liabilities outstanding pertaining to the granting of loans and the lines of credit, which are not reflected in the accompanying consolidated financial statements.
	The Bank of Greene County’s unfunded loan commitments are as follows at June 30, 2014 and 2013:
	(In thousands)	2014		2013
	Nonresidential mortgage loan commitments	$	8,757	$	5,396
	Residential mortgage loan commitments		2,380		6,171
	Construction and land loan commitments		3,138		2,230
	Unused portion of overdraft lines of credit		706		719
	Unused portion of home equity lines of credit		8,159		7,703
	Unused portion of commercial lines of credit		14,419		10,815
	Commercial loan commitments		226		298
	Total commitments	$	37,785	$	33,332
	Commitments to extend credit in the form of loan commitments and lines of credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract.  Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee.  Since many of the commitments are expected to expire without being fully drawn upon, the total commitment amounts do not necessarily represent future cash requirements.  The Bank of Greene County evaluates each customer’s credit worthiness on a case-by-case basis.
	The amount of collateral, if any, required by The Bank of Greene County upon credit extension is based on management’s evaluation of customer credit.  Commitments to extend mortgage credit are primarily collateralized by first liens on real estate.  Collateral on extensions of commercial lines of credit vary but may include accounts receivable, inventory, property, plant and equipment, and income producing commercial property.

Operating_Leases

Operating Leases	12 Months Ended
	Jun. 30, 2014
Operating Leases [Abstract]	'
Operating Leases	'
	Note 14. Operating Leases
	The Bank of Greene County has non-cancelable lease commitments for three branch locations.  These leases include obligations for real estate taxes, insurance and maintenance expenses.  Total lease expense was $69,000 for the years ended June 30, 2014 and 2013, respectively.   Minimum non-cancelable lease commitments for future years ending June 30 are as follows:
	The year ended June 30, (In thousands)	Annual Lease Payments
	2015	$	70
	2016		64
	2017		26
	Thereafter		-
	Total payments	$	160

Concentrations_of_Credit_Risk

Concentrations of Credit Risk	12 Months Ended
	Jun. 30, 2014
Concentrations of Credit Risk [Abstract]	'
Concentrations of Credit Risk	'
	Note 15.  Concentrations of Credit Risk
	The Bank of Greene County grants residential, consumer and commercial loans to customers primarily located in Greene County, New York.  Over the last several years the Company has emphasized expansion into new markets in southern Albany and Columbia counties.  Although The Bank of Greene County has a diversified loan portfolio, a substantial portion of its debtors’ ability to honor their contracts is dependent upon employment and other economic factors throughout Greene and its contiguous counties.

Fair_Value_Measurements_and_Fa

Fair Value Measurements and Fair Value of Financial Instruments	12 Months Ended
	Jun. 30, 2014
Fair Value Measurements and Fair Value of Financial Instruments [Abstract]	'
Fair Value Measurements and Fair Value of Financial Instruments	'
	Note 16.  Fair Value Measurements and Fair Value of Financial Instruments
	Management uses its best judgment in estimating the fair value of the Company’s financial instruments; however, there are inherent weaknesses in any estimation technique.  Therefore, for substantially all financial instruments, the fair value estimates herein are not necessarily indicative of the amounts the Company could have realized in a sale transaction on the dates indicated.  The estimated fair value amounts have been measured as of June 30, 2014 and 2013 and have not been re-evaluated or updated for purposes of these consolidated financial statements subsequent to those respective dates.  As such, the estimated fair values of these financial instruments subsequent to the respective reporting dates may be different than the amounts reported at each period-end.
	The following information should not be interpreted as an estimate of the fair value of the entire Company since a fair value calculation is only provided for a limited portion of the Company’s assets and liabilities.  Due to a wide range of valuation techniques and the degree of subjectivity used in making the estimates, comparisons between the Company’s disclosures and those of other companies may not be meaningful.
	The FASB ASC Topic on “Fair Value Measurement” established a fair value hierarchy that prioritized the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are as follows:
	Level 1: Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities.
	Level 2: Quoted prices in markets that are not active, or inputs that are observable either directly or indirectly, for substantially the full term of the asset or liability.
	Level 3: Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (i.e., supported with little or no market activity).
	An asset’s or liability’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement.
	For assets measured at fair value on a recurring basis, the fair value measurements by level within the fair value hierarchy used are as follows:
						Fair Value Measurements Using
						Quoted Prices In Active Markets For Identical Assets				Significant Other Observable Inputs				Significant Unobservable Inputs
	(In thousands)		30-Jun-14			(Level 1)				(Level 2)				(Level 3)
	Assets:
	U.S. Government sponsored enterprises		$	10,898		$	-			$	10,898			$	-
	State and political subdivisions			1,347			-				1,347				-
	Mortgage-backed securities-residential			9,545			-				9,545				-
	Mortgage-backed securities-multi-family			29,018			-				29,018				-
	Asset-backed securities			13			13				-				-
	Corporate debt securities			5,170			5,170				-				-
	Equity securities			160			160				-				-
	Securities available for sale		$	56,151		$	5,343			$	50,808			$	-
						Fair Value Measurements Using
						Quoted Prices In Active Markets For Identical Assets				Significant Other Observable Inputs				Significant Unobservable Inputs
	(In thousands)		30-Jun-13			(Level 1)				(Level 2)				(Level 3)
	Assets:
	U.S. Government sponsored enterprises		$	12,989		$	-			$	12,989			$	-
	State and political subdivisions			1,858			-				1,858				-
	Mortgage-backed securities-residential			7,533			-				7,533				-
	Mortgage-backed securities-multi-family			41,919			-				41,919				-
	Asset-backed securities			16			16				-				-
	Corporate debt securities			5,176			5,176				-				-
	Equity securities			153			153				-				-
	Securities available for sale		$	69,644		$	5,345			$	64,299			$	-
	Certain investments that are actively traded and have quoted market prices have been classified as Level 1 valuations.  Other available for sale investment securities have been valued by reference to prices for similar securities or through model-based techniques in which all significant inputs are observable and, therefore, such valuations have been classified as Level 2.
	In addition to disclosures of the fair value of assets on a recurring basis, FASB ASC Topic on “Fair Value Measurement” requires disclosures for assets and liabilities measured at fair value on a nonrecurring basis, such as impaired assets, in the period in which a re-measurement at fair value is performed.  Loans are generally not recorded at fair value on a recurring basis. Periodically, the Company records nonrecurring adjustments to the carrying value of loans based on fair value measurements for partial charge-offs of the uncollectible portions of those loans. Nonrecurring adjustments also include certain impairment amounts for collateral-dependent loans calculated as required by the “Receivables –Loan Impairment” subtopic of the FASB ASC when establishing the allowance for credit losses.  Impaired loans are those loans for which the Company has re-measured impairment generally based on the fair value of the underlying collateral supporting the loan and, as a result, the carrying value of the loan less the calculated valuation amount may not necessarily represent the actual fair value of the loan. Real estate collateral is typically valued using independent appraisals or other indications of value based on recent comparable sales of similar properties or assumptions generally observable in the marketplace and the related nonrecurring fair value measurement adjustments have generally been classified as Level 3. Estimates of fair value used for other collateral supporting commercial loans generally are based on assumptions not observable in the marketplace and therefore such valuations have been classified as Level 3.
						Fair Value Measurements Using
	(In thousands)		Fair Value			(Level 1)				(Level 2)				(Level 3)
	30-Jun-14
	Impaired loans		$	3,527		$	-			$	-			$	3,527
	Foreclosed real estate			382			-				-				382
	30-Jun-13
	Impaired loans		$	5,460		$	-			$	-			$	5,460
	The following table presents additional quantitative information about assets measured at fair value on a nonrecurring basis and for which Level 3 inputs were utilized to determine fair value:
	(Dollars in thousands)		Fair Value		Valuation Technique	Unobservable Input		Range				Weighted Average
	30-Jun-14
	Impaired loans		$	3,527	Appraisal of collateral (1)	Appraisal adjustments (2)			0.00%-38.8	%%			15.26	%
						Liquidation expenses (3)			0.00%-9.2	%%			3.82	%
	Foreclosed real estate			382	Appraisal of collateral (1)	Appraisal adjustments (2)			9.30%-19.0	%%			12.18	%
						Liquidation expenses (3)			6.00%-10.8	%%			7.95	%
	30-Jun-13
	Impaired loans		$	5,460	Appraisal of collateral (1)	Appraisal adjustments (2)			4.00%-41.7	%%			23.98	%
						Liquidation expenses (3)			3.49%-9.5	%%			5.86	%
		-1	Fair value is generally determined through independent third-party appraisals of the underlying collateral, which generally includes various Level 3 inputs which are not observable.
		-2	Appraisals may be adjusted downwards by management for qualitative factors such as economic conditions.  Higher downward adjustments are caused by negative changes to the collateral or conditions in the real estate market, actual offers or sales contracts received or age of the appraisal.
		-3	Appraisals may be adjusted downwards by management for qualitative factors such as the estimated costs to liquidate the collateral.
	At June 30, 2014, loans subject to nonrecurring fair value measurement had a recorded investment of $4.2 million with related allowances of $721,000, and consisted of fourteen residential mortgage loans, six nonresidential mortgage loans, one multifamily loans, two home equity and two commercial loans.  At June 30, 2013, loans subject to nonrecurring fair value measurement had a recorded investment of $6.6 million with related allowances of $1.2 million, and consisted of thirteen residential mortgage loans, six nonresidential mortgage loans, two multifamily loans, two commercial construction and two commercial loans. Foreclosed real estate subject to nonrecurring fair value measurement consisted of four residential properties. No other financial assets or liabilities were re-measured during the year on a nonrecurring basis.
	The carrying amounts reported in the statements of financial condition for cash and cash equivalents, long term certificate of deposits, accrued interest receivable and accrued interest payable approximate their fair values.  Fair values of securities are based on quoted market prices (Level 1), where available, or matrix pricing (Level 2), which is a mathematical technique, used widely in the industry to value debt securities without relying exclusively on quoted market prices for the specific securities but rather by relying on the securities’ relationship to other benchmark quoted prices.  The carrying amount of Federal Home Loan Bank stock approximates fair value due to its restricted nature.  Fair values for variable rate loans that reprice frequently, with no significant credit risk, are based on carrying value.  Fair value for fixed rate loans are estimated using discounted cash flows and interest rates currently being offered for loans with similar terms to borrowers of similar credit quality.  Fair values disclosed for demand and savings deposits are equal to carrying amounts at the reporting date.  The carrying amounts for variable rate money market deposits approximate fair values at the reporting date.  Fair values for fixed rate certificates of deposit are estimated using discounted cash flows and interest rates currently being offered in the market on similar certificates.  Fair value for Federal Home Loan Bank long term borrowings are estimated using discounted cash flows and interest rates currently being offered on similar borrowings.  The carrying value of short-term Federal Home Loan Bank borrowings approximates its fair value.
	The fair value of commitments to extend credit is estimated based on an analysis of the interest rates and fees currently charged to enter into similar transactions, considering the remaining terms of the commitments and the credit-worthiness of the potential borrowers.  At June 30, 2014 and 2013, the estimated fair values of these off-balance sheet financial instruments were immaterial, and are therefore excluded from the table below.
	The carrying amounts and estimated fair value of financial instruments are as follows:
	(In thousands)		30-Jun-14							Fair Value Measurements Using
			Carrying Amount			Fair Value				(Level 1)				(Level 2)		(Level 3)
	Cash and cash equivalents		$	13,809		$	13,809			$	13,809			$	-	$	-
	Long term certificate of deposit			250			250				250				-		-
Securities available for sale			56,151			56,151				5,343				50,808		-
Securities held to maturity			181,946			181,932				-				181,932		-
Federal Home Loan Bank stock			1,561			1,561				-				1,561		-
Net loans			399,309			406,718				-				-		406,718
Accrued interest receivable			2,710			2,710				-				2,710		-
Deposits			589,574			589,681				-				589,681		-
Federal Home Loan Bank borrowings			17,650			17,465				-				17,465		-
Accrued interest payable			66			66				-				66		-
(In thousands)		30-Jun-13							Fair Value Measurements Using
		Carrying Amount			Fair Value				(Level 1)				(Level 2)		(Level 3)
Cash and cash equivalents		$	6,222		$	6,222			$	6,222			$	-	$	-
Long term certificate of deposit			250			250				250				-		-
Securities available for sale			69,644			69,644				5,345				64,299		-
Securities held to maturity			176,519			177,660				-				177,660		-
Federal Home Loan Bank stock			1,388			1,388				-				1,388		-
Net loans			359,426			367,377				-				-		367,377
Accrued interest receivable			2,663			2,663				-				2,663		-
Deposits			558,439			558,517				-				558,517		-
Federal Home Loan Bank borrowings			14,600			14,378				-				14,378		-
Accrued interest payable			55			55				-				55		-

Regulatory_Matters

Regulatory Matters	12 Months Ended
	Jun. 30, 2014
Regulatory Matters [Abstract]	'
Regulatory Matters	'
	Note 17.  Regulatory Matters
	The Bank of Greene County and its wholly-owned subsidiary, Greene County Commercial Bank, are subject to various regulatory capital requirements administered by federal banking agencies.  Failure to meet minimum capital requirements can result in certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material impact on the Company’s consolidated financial statements.  Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Bank and the Commercial Bank must meet specific guidelines that involve quantitative measures of assets, liabilities, and certain off-balance-sheet items as calculated under regulatory accounting practices.  Capital amounts and classifications are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors.  As of June 30, 2014, the most recent notification from regulators categorized the banks as “well capitalized” under the regulatory framework for prompt corrective action.  There are no conditions or events since that notification that management believes have changed the Bank’s category.
	Quantitative measures established by regulation to ensure capital adequacy require The Bank of Greene County and Greene County Commercial Bank to maintain minimum amounts and ratios (set forth in the table below) of Total and Tier 1 capital to risk-weighted assets (as defined by regulations), of Tier 1 capital to assets (as defined), and of tangible capital to tangible assets (as defined).  Management believes, as of June 30, 2014, that The Bank of Greene County and Greene County Commercial Bank meet all capital adequacy requirements to which they are subject.
												To Be Well
												Capitalized Under
							For Capital					Prompt Corrective
	(Dollars in thousands)	Actual					Adequacy Purposes					Action Provisions
	The Bank of Greene County	Amount		Ratio			Amount		Ratio			Amount		Ratio
	As of June 30, 2014:
	Total risk-based capital	$	63,918		18.5	%	$	27,600		8	%	$	34,499		10	%
	Tier 1 risk-based capital		59,523		17.3			13,800		4			20,700		6
	Tier 1 leverage ratio		59,523		8.8			20,257		3			33,761		5
	As of June 30, 2013:
	Total risk-based capital	$	58,892		18.5	%	$	25,424		8	%	$	31,780		10	%
	Tier 1 risk-based capital		54,843		17.3			12,712		4			19,068		6
	Tier 1 leverage ratio		54,843		8.6			19,050		3			31,751		5
	Greene County Commercial Bank
	As of June 30, 2014:
	Total risk-based capital	$	17,211		40.6	%	$	3,388		8	%	$	4,236		10	%
	Tier 1 risk-based capital		17,211		40.6			1,694		4			2,541		6
	Tier 1 leverage ratio		17,211		8.2			8,369		4			10,461		5
	As of June 30, 2013:
	Total risk-based capital	$	15,256		39.5	%	$	3,091		8	%	$	3,864		10	%
	Tier 1 risk-based capital		15,256		39.5			1,546		4			2,318		6
	Tier 1 leverage ratio		15,256		7.7			7,912		4			9,890		5

Condensed_Financial_Statements

Condensed Financial Statements of Greene County Bancorp, Inc.	12 Months Ended
	Jun. 30, 2014
Condensed Financial Statements of Greene County Bancorp, Inc. [Abstract]	'
Condensed Financial Statements of Greene County Bancorp, Inc.	'
	Note 18.  Condensed Financial Statements of Greene County Bancorp, Inc.
	The following condensed financial statements summarize the financial position and the results of operations and cash flows of Greene County Bancorp, Inc. as of and for the years ended June 30, 2014 and 2013.
	Greene County Bancorp, Inc.
	Condensed Statements of Financial Condition
	As of June 30, 2014 and 2013
	(In thousands)
	ASSETS		2014			2013
	Cash and cash equivalents		$	2,817		$	2,114
	Investment in subsidiaries			58,419			54,038
	Prepaid expenses and other assets			16			16
	Total assets		$	61,252		$	56,168
	LIABILITIES AND SHAREHOLDERS’ EQUITY
	Total liabilities		$	52		$	60
	Total shareholders’ equity			61,200			56,108
	Total liabilities and shareholders’ equity		$	61,252		$	56,168
	Greene County Bancorp, Inc.
	Condensed Statements of Income
	For the Years Ended June 30, 2014 and 2013
	(In thousands)
			2014			2013
	INCOME:
	Equity in undistributed net income of subsidiaries		$	4,682		$	6,501
	Dividend distributed by subsidiary			2,004			4
	Interest earning deposits			7			12
	Total income		$	6,693		$	6,517
	OPERATING EXPENSES:
	Legal fees			62			46
	Other			103			100
	Total operating expenses			165			146
	Net income		$	6,528		$	6,371
	Greene County Bancorp, Inc.
	Condensed Statements of Comprehensive Income
	For the Years Ended June 30, 2014 and 2013
	(In thousands)
			2014			2013
	Net Income		$	6,528		$	6,371
	Other comprehensive (loss) income:
	Unrealized holding (losses) gains on available for sale securities,
	net of income taxes of ($327) and ($526), respectively			(518	)		(833	)
	Reclassification adjustment for gain on sale of securities realized in net income
	net of income taxes of $- and ($4) respectively(1)			-			(6	)
	Accretion of unrealized loss on securities transferred to held to maturity,
	net of income taxes of $175 and $13, respectively(2)			277			20
	Pension actuarial loss, net of income taxes of ($37) and ($65)(3)			(59	)		(104	)
	Total other comprehensive loss, net of taxes			(300	)		(923	)
	Comprehensive income		$	6,228		$	5,448
		-1	Amounts are included in net gain on sale of available for sale securities on the Consolidated Statements of Income in total non-interest income.
		-2	The accretion of the unrealized holding losses in accumulated other comprehensive income at the date of transfer partially offsets the amortization of the difference between the par value and fair value of the investment securities at the date of transfer, and is an adjustment of interest income.
		-3	These accumulated other comprehensive income components are included in the computation of net periodic benefit cost and are included in salaries and employee benefit expense within noninterest expense (see Note 9 for additional details).
	Greene County Bancorp, Inc.
	Condensed Statements of Cash Flows
	For the Years Ended June 30, 2014 and 2013
	(In thousands)
	Cash flow from operating activities:		2014			2013
	Net Income		$	6,528		$	6,371
	Adjustments to reconcile net income to cash provided by (used by) operating activities:
	Undistributed earnings of subsidiaries			(4,682	)		(6,501	)
	Tax benefit of stock based compensation			(28	)		-
	Net increase in prepaid expenses and other assets			-			(2	)
	Net increase in total liabilities			20			3
	Net cash provided by (used by) operating activities			1,838			(129	)
	Cash flows from financing activities:
	Payment of cash dividends			(1,335	)		(2,128	)
Proceeds from exercise of stock options			172			124
Excess tax benefit from share-based payment arrangements			28			-
Net cash used in financing activities			(1,135	)		(2,004	)
Net (decrease) increase in cash and cash equivalents			703			(2,133	)
Cash and cash equivalents at beginning of year			2,114			4,247
Cash and cash equivalents at end of year		$	2,817		$	2,114

Subsequent_events

Subsequent events	12 Months Ended
	Jun. 30, 2014
Subsequent events [Abstract]	'
Subsequent events	'
	Note 19.  Subsequent events
	On July 15, 2014, the Board of Directors declared a cash dividend for the quarter ended June 30, 2014 of $0.18 per share on Greene County Bancorp, Inc.’s common stock.  The dividend reflects an annual cash dividend rate of $0.72 per share, compared to an annual cash dividend rate of $0.70 declared during the previous quarter.  The dividend was payable to stockholders of record as of August 15, 2014, and was paid on August 29, 2014.  The MHC has waived its right to receive dividends declared on its shares of the Company’s common stock for the quarter ended June 30, 2014.

Summary_of_significant_account1

Summary of significant accounting policies (Policies)	12 Months Ended
	Jun. 30, 2014
Summary of significant accounting policies [Abstract]	'
Basis of Presentation	'
	Basis of Presentation
	The consolidated financial statements include the accounts of Greene County Bancorp, Inc. (the “Company”) and its subsidiary, The Bank of Greene County (the “Bank”) and the Bank’s subsidiaries Greene County Commercial Bank and Greene Property Holdings, Ltd.  All material inter-company accounts and transactions have been eliminated.  Amounts in the prior year’s consolidated financial statements have been reclassified whenever necessary to conform to the current year’s presentation. These reclassifications had no effect on net income or shareholders’ equity as previously reported.  The accompanying consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”).  These consolidated financial statements consider events that occurred through the date the consolidated financial statements were issued.
Nature of Operations	'
	Nature of Operations
	Greene County Bancorp, Inc.’s primary business is the ownership and operation of its subsidiaries.  The Bank of Greene County has twelve full-service offices and an operations center located in its market area consisting of the Hudson Valley of New York.    The Bank of Greene County is primarily engaged in the business of attracting deposits from the general public in The Bank of Greene County’s market area, and investing such deposits, together with other sources of funds, in loans and investment securities.  Greene County Commercial Bank’s primary business is to attract deposits from, and provide banking services to, local municipalities.  Greene Property Holdings, Ltd. was formed as a New York corporation that has elected under the Internal Revenue Code to be a real estate investment trust.  Currently, certain mortgages and notes held by The Bank of Greene County are transferred and beneficially owned by Greene Property Holdings, Ltd.  The Bank of Greene County continues to service these loans.
Charter	'
	Charter
	Greene County Bancorp, Inc. and its parent mutual holding company (the “MHC”) are federally chartered and, effective July 2011, regulated and examined by the Federal Reserve Board.  The Bank of Greene County, the subsidiary of Greene County Bancorp, Inc., is also federally chartered and regulated and examined by the Office of the Comptroller of the Currency (the “OCC”).
	Greene County Commercial Bank is a New York State-chartered financial institution, regulated and examined by the New York State Banking Department.  Greene Property Holdings, Ltd. is a New York corporation.
	As a federally chartered savings bank, The Bank of Greene County must maintain at least 65% of its “portfolio assets” (total assets minus goodwill and other intangible assets, office property and specified liquid investments up to 20% of total assets) in certain “qualified thrift investments” (primarily loans to purchase, refinance, construct, improve or repair domestic residential housing, home equity loans, securities backed by or representing an interest in mortgages on domestic residential housing, and Federal Home Loan Bank stock) in at least 9 months out of every 12 month period.  A savings institution that fails the qualified thrift lender test is subject to certain operating restrictions and may be required to convert to a bank charter.  At June 30, 2014 and 2013 and for the years then ended, The Bank of Greene County satisfied the requirement of the qualified thrift lender test.
Use of Estimates	'
	Use of Estimates
	The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period.  Actual results could materially differ from those estimates.  Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the allowance for loan losses and the assessment of other-than-temporary security impairment.
	While management uses available information to recognize losses on loans, future additions to the allowance for loan losses (the “Allowance”) may be necessary, based on changes in economic conditions, asset quality or other factors.  In addition, various regulatory authorities, as an integral part of their examination process, periodically review the Allowance.  Such authorities may require the Company to recognize additions to the Allowance based on their judgments of information available to them at the time of their examination.
	Greene County Bancorp, Inc. makes an assessment to determine whether there have been any events or economic circumstances to indicate that a security on which there is an unrealized loss is impaired on an other-than-temporary basis.  The Company considers many factors including the severity and duration of the impairment; the intent and ability of the Company to hold the security for a period of time sufficient for a recovery in value; recent events specific to the issuer or industry; and for debt securities, intent to sell the security, whether it is more likely than not we will be required to sell the security before recovery, whether loss is expected, external credit ratings and recent downgrades.  Securities on which there is an unrealized loss that is deemed to be other-than-temporary are written down to fair value through earnings.
Cash and Cash Equivalents	'
	Cash and Cash Equivalents
	Cash and cash equivalents include cash on hand, amounts due from banks, interest-bearing deposits at other financial institutions, investments (with original maturity of three months or less), and overnight federal funds sold.  The amounts of interest-bearing deposits included as cash equivalents at June 30, 2014 and 2013 were $4.8 million and $809,000, respectively.
Securities	'
	Securities
	Greene County Bancorp, Inc. has classified its investments in debt and equity securities as either available-for-sale or held-to-maturity.  Available-for-sale securities are reported at fair value, with net unrealized gains and losses reflected in the accumulated other comprehensive income component of shareholders’ equity, net of applicable income taxes.  Held-to-maturity securities are those debt securities which management has the intent and the Company has the ability to hold to maturity and are reported at amortized cost.  The Company does not have trading securities in its portfolio.
	Realized gains or losses on security transactions are reported in earnings and computed using the specific identification cost basis.  Fair values of securities are based on quoted market prices, where available.  Valuation of securities is further described in Note 16.  Amortization of bond premiums and accretion of bond discounts are amortized over the expected life of the securities using the interest method.
	When the fair value of a held to maturity or available for sale security is less than its amortized cost basis, an assessment is made as to whether other-than-temporary impairment (“OTTI”) is present.  The Company considers numerous factors when determining whether a potential OTTI exists and the period over which the debt security is expected to recover.  The principal factors considered are (1) the length of time and the extent to which the fair value has been less than the amortized cost basis, (2) the financial condition of the issuer (and guarantor, if any) and adverse conditions specifically related to the security, industry or geographic area, (3) failure of the issuer of the security to make scheduled interest or principal payments, (4) any changes to the rating of the security by a rating agency, and (5) the presence of credit enhancements, if any, including the guarantee of the federal government or any of its agencies.
	For debt securities, OTTI is considered to have occurred if (1) the Company intends to sell the security before recovery of its amortized cost basis, (2) it is more likely than not the Company will be required to sell the security before recovery of its amortized cost basis, or (3) if the present value of expected cash flows is not sufficient to recover the entire amortized cost basis.  In determining the present value of expected cash flows, the Company discounts the expected cash flows at the effective interest rate implicit in the security at the date of acquisition.  In estimating cash flows expected to be collected, the Company uses available information with respect to security prepayment speeds, default rates and severity.  In determining whether OTTI has occurred for equity securities, the Company considers the applicable factors described above and the intent and ability of the Company to retain its investment in the issuer for a period of time sufficient to allow for any anticipated recovery in fair value.
	For debt securities, credit-related OTTI is recognized in earnings while noncredit related OTTI on securities not expected to be sold is recognized in other comprehensive income/loss (“OCI”).  Credit-related OTTI is measured as the difference between the present value of an impaired security’s expected cash flows and its amortized cost basis.  Noncredit-related OTTI is measured as the difference between the fair value of the security and its amortized cost less any credit-related losses recognized.  For securities classified as held to maturity, the amount of OTTI recognized in OCI is accreted to the credit-adjusted expected cash flow amounts of the securities over future periods.  For equity securities, the entire amount of OTTI is recognized in earnings.
Loans	'
	Loans
	Loans are stated at unpaid principal balances, less the allowance for loan losses and net deferred loan origination fees and costs.  Interest on loans is accrued and credited to income based upon the principal amount outstanding.  Unearned discount on installment loans is recognized as income over the term of the loan, principally using a method that approximates the effective yield method.  Nonrefundable loan fees and related direct costs are deferred and amortized over the life of the loan as an adjustment to loan yield using the effective interest method.
Allowance for Loan Losses	'
	Allowance for Loan Losses
	The allowance for loan losses is maintained by a provision for loan losses charged to expense, reduced by net charge-offs and increased by recoveries of loans previously charged off.  The level of the allowance is based on management’s evaluation of the collectability of the loan portfolio, including the nature of the portfolio, credit concentrations, trends in historical loss experience, specific impaired loans, payment status of the loan and economic conditions.  The Bank of Greene County considers smaller balance residential mortgages, home equity loans, nonresidential, business loans and installment loans to customers as small, homogeneous loans, which are evaluated for impairment collectively based on historical loss experience.  Larger balance residential, nonresidential mortgage and business loans are reviewed individually and considered impaired if it is probable that The Bank of Greene County will not be able to collect scheduled payments of principal and interest when due, according to the contractual terms of the loan agreements.  The measurement of impaired loans is generally based on the fair value of the underlying collateral, less estimated costs to sell.  The majority of The Bank of Greene County loans, including most nonaccrual loans, are small homogenous loan types adequately supported by collateral.  As a result, the level of impaired loans may only be a portion of nonaccrual loans.  Loans that are delinquent or slow paying may not be impaired.  Management considers the payment status of loans in the process of evaluating the adequacy of the allowance for loan losses among other factors.  Loans that are either delinquent a minimum of 60 days or are on nonaccrual status, and are not individually considered impaired, are either designated as Special Mention or Substandard, and the allocation of the allowance for loan loss is based upon the risk associated with such designation.
Income Recognition on Impaired and Nonaccrual loans	'
	Income Recognition on Impaired and Nonaccrual loans
	The Bank of Greene County generally places a loan, including impaired loans, on nonaccrual status when it is specifically determined to be impaired or when principal and interest is delinquent for 90 days or more.  Any unpaid interest previously accrued on these loans is reversed from income.  When a loan is specifically determined to be impaired, collection of interest and principal are generally applied as a reduction to principal outstanding until the collection of the remaining balance is reasonably assured.  Interest income on all nonaccrual loans is recognized on a cash basis.
Foreclosed Real Estate (FRE)	'
	Foreclosed Real Estate (FRE)
	FRE consists of properties acquired through mortgage loan foreclosure proceedings or in full or partial satisfaction of loans.  FRE is initially recorded at fair value (less estimated costs to sell) at the date the collateral is acquired establishing a new cost basis and any shortfall is charged to the allowance for loan losses at this time.  Subsequently, management reviews the value of FRE and write-downs, if any, are charged to expense.  All expenses and income related to FRE are included in consolidated results of operations as part of noninterest expense.
Premises and Equipment	'
	Premises and Equipment
	Premises and equipment are stated at cost less accumulated depreciation.  Depreciation is computed using principally the straight-line method over the estimated useful lives of the related assets (39 years for building and improvements, 3-8 years for furniture and equipment).  Maintenance and repairs are typically charged to expense when incurred.  Gains and losses from sales or other dispositions of premises and equipment are included in consolidated results of operations.  Leasehold improvements are amortized over the lesser of the related terms of the leases or their useful life.
Treasury Stock	'
	Treasury Stock
	Common stock repurchases are recorded at cost and then held as treasury stock.  From time to time, Greene County Bancorp, Inc. may repurchase shares of common stock under an approved plan if, in its judgment, such shares are an attractive investment, in view of the current price at which the common stock is trading relative to Greene County Bancorp, Inc.’s earnings per share, book value per share and general market and economic factors.  On August 22, 2007, the Board of Directors authorized a stock repurchase program pursuant of up to 5% of its outstanding shares (excluding shares held by Greene County Bancorp, MHC, the Company's mutual holding company), or up to 92,346 shares.  As of June 30, 2014, the Company had repurchased 62,478 shares in accordance with the stock repurchase program.  There were no shares repurchased during fiscal 2014 or 2013.  The Company does not intend to repurchase any additional shares under this stock repurchase program.  Common stock may also be acquired in order to have shares available for issuance under the Stock Option Plans.  See Note 10 to the consolidated financial statements, Stock-Based Compensation, for more information regarding these plans.  No repurchases of stock were made during the year ended June 30, 2014 or 2013.
Federal Home Loan Bank Stock	'
	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 years ended June 30, 2014 or 2013.
Advertising	'
	Advertising
	Greene County Bancorp, Inc. follows a policy of charging the costs of advertising to expense as incurred.  Advertising costs included in other operating expenses were $278,000 and $369,000 for the years ended June 30, 2014 and 2013, respectively.
Transfers of Financial Assets	'
	Transfers of Financial Assets
	Transfers of financial assets are accounted for as sales when control over the assets has been surrendered.  Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Company, (2) the transferee obtains the right (free of conditions that constrain it from taking advantage of the right) to pledge or exchange the transferred assets, and (3) the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity.
Off-Balance Sheet Credit Related Financial Instruments	'
	Off-Balance Sheet Credit Related Financial Instruments
	In the ordinary course of business, the Company has entered into commitments to extend credit, including commitments under lines of credit.  Such financial instruments are recorded when they are funded.
Income Taxes	'
	Income Taxes
	Provisions for income taxes are based on taxes currently payable or refundable and deferred income taxes on temporary differences between the tax basis of assets and liabilities and their reported amounts in the consolidated financial statements.  Deferred tax assets and liabilities are reported at currently enacted income tax rates applicable to the period in which the deferred tax assets and liabilities are expected to be realized or settled.
Earnings Per Share (EPS)	'
	Earnings Per Share (EPS)
	Basic EPS is computed by dividing net income by the weighted average number of common shares outstanding during the period.  Diluted earnings per share is computed in a manner similar to that of basic earnings per share except that the weighted-average number of common shares outstanding is increased to include the number of incremental common shares that would have been outstanding under the treasury stock method if all potentially dilutive common shares (such as stock options) issued became vested during the period.  Unallocated common shares held by the ESOP are not included in the weighted-average number of common shares outstanding for either the basic or diluted earnings per share calculations.
Impact of Recent Accounting Pronouncements	'
	Impact of Recent Accounting Pronouncements
	In January 2014, the Financial Accounting Standards Board (“FASB”) issued an amendment (ASU 2014-04) to its guidance on “Receivables – Troubled Debt Restructurings by Creditors (Subtopic 310-40): Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure”.  This Update has been issued to clarify when an in substance repossession or foreclosure occurs, that is, when a creditor should be considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan such that the loan receivable should be derecognized and the real estate property recognized. An entity can elect to adopt the amendments in this Update using either a modified retrospective transition method or a prospective transition method. The amendments in this Update are effective for public business entities for annual periods, and interim periods within those annual periods, beginning after December 15, 2014. Early adoption is permitted.  The adoption of these amendments is not expected to have an effect on our consolidated results of operations or financial position.
	In May 2014, the FASB issued and amendment (ASU 2014-09) to is guidance on “Revenue from Contracts with Customers (Topic 606).  The objective of the ASU is to align the recognition of revenue with the transfer of promised goods or services provided to customers in an amount that reflects the consideration which the entity expects to be entitled in exchange for those goods or services.  This ASU will replace most existing revenue recognition guidance under GAAP when it becomes effective.  The amendments in this ASU are effective for public business entities for annual periods, beginning after December 15, 2016.  The Company has not yet determined the effect of the standard on its ongoing financial reporting.

Securities_Tables

Securities (Tables)	12 Months Ended
	Jun. 30, 2014
Securities [Abstract]	'
Unrealized Gain (Loss) on Investments	'
	Securities at June 30, 2014 consisted of the following:
	(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
	Securities available for sale:
	U.S. government sponsored enterprises	$	10,648	$	250	$	-	$	10,898
	State and political subdivisions		1,324		23		-		1,347
	Mortgage-backed securities-residential		9,345		213		13		9,545
	Mortgage-backed securities-multi-family		29,268		89		339		29,018
	Asset-backed securities		15		-		2		13
	Corporate debt securities		4,811		375		16		5,170
	Total debt securities		55,411		950		370		55,991
	Equity securities		62		98		-		160
	Total securities available for sale		55,473		1,048		370		56,151
	Securities held to maturity:
	U.S. government sponsored enterprises		2,000		-		102		1,898
	State and political subdivisions		91,634		787		204		92,217
	Mortgage-backed securities-residential		22,785		1,150		-		23,935
	Mortgage-backed securities-multi-family		64,605		759		2,381		62,983
	Other securities		922		1		24		899
	Total securities held to maturity		181,946		2,697		2,711		181,932
	Total securities	$	237,419	$	3,745	$	3,081	$	238,083
	Securities at June 30, 2013 consisted of the following:
				Gross		Gross		Estimated
		Amortized		Unrealized		Unrealized		Fair
	(In thousands)	Cost		Gains		Losses		Value
	Securities available for sale:
	U.S. government sponsored enterprises	$	12,729	$	260	$	-	$	12,989
	State and political subdivisions		1,849		29		20		1,858
	Mortgage-backed securities-residential		7,340		193		-		7,533
	Mortgage-backed securities-multi-family		42,096		289		466		41,919
	Asset-backed securities		17		-		1		16
	Corporate debt securities		4,827		380		31		5,176
	Total debt securities		68,858		1,151		518		69,491
	Equity securities		68		85		-		153
	Total securities available for sale		68,926		1,236		518		69,644
	Securities held to maturity:
	U.S. treasury securities		5,500		17		-		5,517
	U.S. government sponsored enterprises		2,999		16		113		2,902
	State and political subdivisions		82,801		362		755		82,408
	Mortgage-backed securities-residential		29,077		1,515		9		30,583
	Mortgage-backed securities-multi-family		55,086		1,236		1,093		55,229
	Other securities		1,056		-		35		1,021
	Total securities held to maturity		176,519		3,146		2,005		177,660
	Total securities	$	245,445	$	4,382	$	2,523	$	247,304
Continuous Unrealized Loss Position, Fair Value	'
	The following table shows fair value and gross unrealized losses, aggregated by security category and length of time that individual securities have been in a continuous unrealized loss position, at June 30, 2014.
		Less Than 12 Months				More Than 12 Months				Total
	(In thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
	Securities available for sale:
	Mortgage-backed securities-residential	$	4,302	$	13	$	-	$	-	$	4,302	$	13
	Mortgage-backed securities-multi-family		4,448		5		19,404		334		23,852		339
	Asset-backed securities		-		-		13		2		13		2
	Corporate debt securities		767		16		-		-		767		16
	Total securities available for sale		9,517		34		19,417		336		28,934		370
	Securities held to maturity:
	U.S. government sponsored enterprises		1,898		102		-		-		1,898		102
	State and political subdivisions		6,693		175		1,815		29		8,508		204
	Mortgage-backed securities-multi-family		26,522		1,617		15,440		764		41,962		2,381
	Other securities		130		2		401		22		531		24
	Total securities held to maturity		35,243		1,896		17,656		815		52,899		2,711
	Total securities	$	44,760	$	1,930	$	37,073	$	1,151	$	81,833	$	3,081
	The following table shows fair value and gross unrealized losses, aggregated by security category and length of time that individual securities have been in a continuous unrealized loss position, at June 30, 2013.
		Less Than 12 Months				More Than 12 Months				Total
	(In thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
	Securities available for sale:
	State and political subdivisions	$	791	$	20	$	-	$	-	$	791	$	20
	Mortgage-backed securities-multi-family		33,298		466		-		-		33,298		466
	Asset-backed securities		-		-		16		1		16		1
	Corporate debt securities		758		31		-		-		758		31
	Total securities available for sale		34,847		517		16		1		34,863		518
	Securities held to maturity:
	U.S. government sponsored enterprises		1,887		113		-		-		1,887		113
	State and political subdivisions		28,597		745		1,597		10		30,194		755
	Mortgage-backed securities-residential		1,228		9		-		-		1,228		9
	Mortgage-backed securities-multi-family		33,044		1,093		-		-		33,044		1,093
	Other securities		753		35		-		-		753		35
	Total securities held to maturity		65,509		1,995		1,597		10		67,106		2,005
	Total securities	$	100,356	$	2,512	$	1,613	$	11	$	101,969	$	2,523
Schedule of Realized Gain (Loss)	'
	The following table presents realized gains and losses on securities for the years ended June 30, 2014 and 2013:
	(In thousands)	2014		2013
	Gross realized gains on sale of available-for-sale securities	$	-	$	10
	Other-than-temporary impairment losses		-		-
	Net realized gains (losses)	$	-	$	10
Investments Classified by Contractual Maturity Date	'
	The estimated fair values of debt securities at June 30, 2014, by contractual maturity are shown below.  Expected maturities may differ from contractual maturities, because issuers may have the right to call or prepay obligations with or without call or prepayment penalties.
	(In thousands)
	Available for sale debt securities	Amortized Cost		Fair Value
	Within one year	$	3,265	$	3,280
	After one year through five years		8,891		9,312
	After five years through ten years		4,627		4,823
	After ten years		-		-
	Total available for sale debt securities		16,783		17,415
	Mortgage-backed and asset-backed securities		38,628		38,576
	Equity securities		62		160
	Total available for sale securities		55,473		56,151
	Held to maturity debt securities
	Within one year		29,835		29,879
	After one year through five years		38,047		38,564
	After five years through ten years		19,286		19,254
	After ten years		7,388		7,317
	Total held to maturity debt securities		94,556		95,014
	Mortgage-backed		87,390		86,918
	Total held to maturity securities		181,946		181,932
	Total securities	$	237,419	$	238,083

Loans_Tables

Loans (Tables)	12 Months Ended
	Jun. 30, 2014
Loans [Abstract]	'
Major Loan Segments and Classes	'
	Loan segments and classes at June 30, 2014 and 2013 are summarized as follows:
		At June 30,
	(In thousands)	2014			2013
	Real estate mortgages:
	Residential	$	227,373		$	212,526
	Nonresidential		114,066			91,482
	Construction and land		4,563			6,214
	Multifamily		4,059			5,511
	Total real estate mortgages		350,061			315,733
	Home equity loans		20,578			20,371
	Consumer installment		4,208			4,078
	Commercial loans		30,994			25,657
	Total gross loans		405,841			365,839
	Allowance for loan losses		(7,419	)		(7,040	)
	Deferred fees and costs		887			627
	Total net loans	$	399,309		$	359,426
Loan Balances by Internal Credit Quality Indicator	'
	Loan balances by internal credit quality indicator as of June 30, 2014 are shown below.
	(In thousands)	Performing			Watch			Special Mention		Substandard			Total
	Residential mortgage	$	223,772		$	221		$	99	$	3,281		$	227,373
	Nonresidential mortgage		109,281			-			1,789		2,996			114,066
	Residential construction and land		3,005			-			-		-			3,005
	Commercial construction		1,558			-			-		-			1,558
	Multi-family		3,946			-			-		113			4,059
	Home equity		20,239			-			-		339			20,578
	Consumer installment		4,208			-			-		-			4,208
	Commercial loans		29,686			-			385		923			30,994
	Total gross loans	$	395,695		$	221		$	2,273	$	7,652		$	405,841
	Loan balances by internal credit quality indicator as of June 30, 2013 are shown below.
	(In thousands)	Performing			Watch			Special Mention		Substandard			Total
	Residential mortgage	$	207,606		$	294		$	302	$	4,324		$	212,526
	Nonresidential mortgage		87,509			-			2,197		1,776			91,482
	Residential construction and land		2,691			-			-		-			2,691
	Commercial construction		2,466			-			-		1,057			3,523
	Multi-family		4,785			-			-		726			5,511
	Home equity		20,099			221			23		28			20,371
	Consumer installment		4,073			5			-		-			4,078
	Commercial loans		24,454			-			516		687			25,657
	Total gross loans	$	353,683		$	520		$	3,038	$	8,598		$	365,839
Delinquent and Nonaccrual Loans By Past Due Status	'
	The following table sets forth information regarding delinquent and/or nonaccrual loans as of June 30, 2014:
	(In thousands)	30-59 days past due			60-89 days past due			90 days or more past due		Total past due			Current		Total Loans		Loans on Non-accrual
	Residential mortgage	$	1,047		$	290		$	1,938	$	3,275		$	224,098	$	227,373	$	2,473
	Nonresidential mortgage		-			504			2,688		3,192			110,874		114,066		2,775
	Residential construction and land		-			-			-		-			3,005		3,005		-
	Commercial construction		-			-			-		-			1,558		1,558		-
	Multi-family		-			-			-		-			4,059		4,059		-
	Home equity		260			-			339		599			19,979		20,578		339
	Consumer installment		51			-			-		51			4,157		4,208		-
	Commercial loans		509			123			278		910			30,084		30,994		312
	Total gross loans	$	1,867		$	917		$	5,243	$	8,027		$	397,814	$	405,841	$	5,899
	The following table sets forth information regarding delinquent and/or nonaccrual loans as of June 30, 2013:
	(In thousands)	30-59 days past due			60-89 days past due			90 days or more past due		Total past due			Current		Total Loans		Loans on Non-accrual
	Residential mortgage	$	1,255		$	165		$	3,875	$	5,295		$	207,231	$	212,526	$	3,599
	Nonresidential mortgage		215			978			1,655		2,848			88,634		91,482		2,018
	Residential construction and land		38			-			-		38			2,653		2,691		-
	Commercial construction		-			-			-		-			3,523		3,523		-
	Multi-family		144			-			463		607			4,904		5,511		463
	Home equity		269			221			28		518			19,853		20,371		51
	Consumer installment		34			5			-		39			4,039		4,078		-
	Commercial loans		530			78			82		690			24,967		25,657		195
	Total gross loans	$	2,485		$	1,447		$	6,103	$	10,035		$	355,804	$	365,839	$	6,326
Nonaccrual Loans, Interest Income Data	'
	The table below details additional information related to nonaccrual loans:
		For the years ended June 30,
	(In thousands)	2014			2013
	Interest income that would have been recorded if loans had been performing in accordance with original terms	$	352		$	433
	Interest income that was recorded on nonaccrual loans		128			158
Impaired Loans By Loan Portfolio Class	'
	The tables below detail additional information on impaired loans at the date or periods indicated:
		As of June 30, 2014								For the year ended June 30, 2014
	(In thousands)	Recorded Investment			Unpaid Principal			Related Allowance		Average Recorded Investment			Interest Income Recognized
	With no related allowance recorded:
	Residential mortgage	$	206		$	206		$	-	$	330		$	14
	Nonresidential mortgage		461			461			-		518			29
	Home equity		96			96			-		24			3
			763			763			-		872			46
	With an allowance recorded:
	Residential mortgage		2,700			2,790			441		2,978			64
	Nonresidential mortgage		2,572			2,959			338		2,346			63
	Commercial construction		-			-			-		350			17
	Multi-family		-			-			-		193			-
	Home equity		200			200			87		150			-
	Commercial loans		603			603			3		606			39
			6,075			6,552			869		6,623			183
	Residential mortgage		2,906			2,996			441		3,308			78
	Nonresidential mortgage		3,033			3,420			338		2,864			92
	Commercial construction		-			-			-		350			17
	Multi-family		-			-			-		193			-
	Home equity		296			296			87		174			3
	Commercial loans		603			603			3		606			39
		$	6,838		$	7,315		$	869	$	7,495		$	229
		As of June 30, 2013								For the year ended June 30, 2013
	(In thousands)	Recorded Investment			Unpaid Principal			Related Allowance		Average Recorded Investment			Interest Income Recognized
	With no related allowance recorded:
	Residential mortgage	$	852		$	852		$	-	$	272		$	14
	Nonresidential mortgage		783			783			-		1,146			66
	Commercial loans		-			-			-		81			17
			1,635			1,635			-		1,499			97
	With an allowance recorded:
	Residential mortgage		2,582			2,632			520		2,604			77
	Nonresidential mortgage		1,339			1,339			305		1,182			33
	Commercial construction		1,057			1,057			331		1,066			50
	Multi-family		463			463			16		850			26
	Home equity		-			-			-		193			4
	Commercial loans		610			610			7		575			37
			6,051			6,101			1,179		6,470			227
	Residential mortgage		3,434			3,484			520		2,876			91
	Nonresidential mortgage		2,122			2,122			305		2,328			99
	Commercial construction		1,057			1,057			331		1,066			50
	Multi-family		463			463			16		850			26
	Home equity		-			-			-		193			4
	Commercial loans		610			610			7		656			54
		$	7,686		$	7,736		$	1,179	$	7,969		$	324
Troubled Debt Restructurings on Financing Receivables	'
	The table below details loans that have been modified as a troubled debt restructuring during the year ended June 30, 2014.
	(Dollars in thousands)	Number of Contracts			Pre-Modification Outstanding Recorded Investment			Post-Modification Outstanding Recorded Investment		Current Outstanding Recorded Investment
	Residential mortgage		3		$	575		$	575	$	566
	Nonresidential mortgage		5			1,789			1,848		1,589
	The table below details loans that have been modified as a troubled debt restructuring during the year ended June 30, 2013.
	(Dollars in thousands)	Number of Contracts			Pre-Modification Outstanding Recorded Investment			Post-Modification Outstanding Recorded Investment		Current Outstanding Recorded Investment
	Residential mortgage		4		$	836		$	742	$	739
	Nonresidential mortgage		2			625			657		657
Troubled Debt Restructurings, Subsequently Defaulted	'
	The table below details loans that have been modified as troubled debt restructurings during the previous twelve months which have subsequently defaulted during the year ended June 30, 2014:
	(Dollars in thousands)	Number of Contracts			Recorded Investment			Allowance for Loan Loss
	Residential mortgage		2		$	284		$	65
	Nonresidential mortgage		2			894			192
Activity and Allocation of Allowance For Loan Losses	'
	The allowance is allocated to each loan category based on historical loss experience, current economic conditions, and other considerations.
	Activity for the year ended June 30, 2014
	(In thousands)	Balance June 30, 2013			Charge-offs			Recoveries		Provision			Balance June 30, 2014
	Residential mortgage	$	2,627		$	420		$	10	$	514		$	2,731
	Nonresidential mortgage		2,476			309			-		769			2,936
	Residential construction and land		37			-			-		5			42
	Commercial construction		392			-			-		(354	)		38
	Multi-family		139			24			7		(63	)		59
	Home equity		275			44			-		130			361
	Consumer installment		222			215			75		158			240
	Commercial loans		809			205			4		203			811
	Unallocated		63			-			-		138			201
	Total	$	7,040		$	1,217		$	96	$	1,500		$	7,419
		Allowance for Loan Losses						Loans Receivable
		Ending Balance June 30, 2014						Ending Balance June 30, 2014 Impairment Analysis
		Impairment Analysis
	(In thousands)	Individual Evaluated			Collectively Evaluated			Individual Evaluated		Collectively Evaluated
	Residential mortgage	$	441		$	2,290		$	2,906	$	224,467
	Nonresidential mortgage		338			2,598			3,033		111,033
	Residential construction and land		-			42			-		3,005
	Commercial construction		-			38			-		1,558
	Multi-family		-			59			-		4,059
	Home equity		87			274			296		20,282
	Consumer installment		-			240			-		4,208
	Commercial loans		3			808			603		30,391
	Unallocated		-			201			-		-
	Total	$	869		$	6,550		$	6,838	$	399,003
	Activity for the year ended June 30, 2013
	(In thousands)	Balance June 30, 2012			Charge-offs			Recoveries		Provision			Balance June 30, 2013
	Residential mortgage	$	2,163		$	421		$	-	$	885		$	2,627
	Nonresidential mortgage		2,076			233			-		633			2,476
	Residential construction and land		19			-			-		18			37
	Commercial construction		407			-			-		(15	)		392
	Multi-family		337			-			-		(198	)		139
	Home equity		187			-			-		88			275
	Consumer installment		207			246			88		173			222
	Commercial loans		645			71			-		235			809
	Unallocated		136			-			-		(73	)		63
	Total	$	6,177		$	971		$	88	$	1,746		$	7,040
		Allowance for Loan Loss						Loans Receivable
		Ending Balance June 30, 2013						Ending Balance June 30, 2013 Impairment Analysis
		Impairment Analysis
	(In thousands)	Individually Evaluated			Collectively Evaluated			Individually Evaluated		Collectively Evaluated
	Residential mortgage	$	520		$	2,107		$	3,434	$	209,092
	Nonresidential mortgage		305			2,171			2,122		89,360
	Residential construction & land		-			37			-		2,691
	Commercial construction		331			61			1,057		2,466
	Multi-family		16			123			463		5,048
	Home equity		-			275			-		20,371
	Consumer installment		-			222			-		4,078
	Commercial loans		7			802			610		25,047
	Unallocated		-			63			-		-
	Total	$	1,179		$	5,861		$	7,686	$	358,153

Premises_and_Equipment_Tables

Premises and Equipment (Tables)	12 Months Ended
	Jun. 30, 2014
Premises and Equipment [Abstract]	'
Summary of Premises and Equipment	'
	A summary of premises and equipment at June 30, 2014 and 2013, is as follows:
	(In thousands)	2014			2013
	Land	$	2,883		$	2,883
	Building and improvements		15,411			14,888
	Furniture and equipment		3,572			6,741
	Less: accumulated depreciation		(7,559	)		(10,163	)
	Total premises and equipment	$	14,307		$	14,349

Deposits_Tables

Deposits (Tables)	12 Months Ended
	Jun. 30, 2014
Deposits [Abstract]	'
Schedule of Deposits	'
	Major classifications of deposits at June 30, 2014 and 2013 are summarized as follows:
	(In thousands)	2014		2013
	Noninterest bearing deposits	$	67,446	$	57,926
	Certificates of deposit		48,900		56,181
	Savings deposits		165,227		160,004
	Money market deposits		87,363		85,685
	NOW deposits		220,638		198,643
	Total deposits	$	589,574	$	558,439
Schedule of Deposits by Time Remaining on Maturity	'
	The following indicates the amount of certificates of deposit by time remaining to maturity as of June 30, 2014.
	(In thousands)	3 months		3 to 6		7 to 12		Over 12
		or less		Months		Months		Months		Total
	Certificates of deposit less than $100,000	$	10,363	$	7,288	$	5,908	$	8,972	$	32,531
	Certificates of deposit $100,000 or more		5,429		1,831		4,025		5,084		16,369
	Total certificates of deposit	$	15,792	$	9,119	$	9,933	$	14,056	$	48,900
Schedule of Certificates of Deposits by Year of Maturity	'
	Scheduled maturities of certificates of deposit at June 30, 2014 were as follows:
	(In thousands)
	The year ended June 30, year end
	2015	$	34,844
	2016		6,136
	2017		3,222
	2018		553
	2019		4,145
		$	48,900

Borrowings_Tables

Borrowings (Tables)	12 Months Ended
	Jun. 30, 2014
Borrowings [Abstract]	'
Scheduled Maturities of Term Borrowings	'
	Scheduled maturities of long-term borrowings at June 30, 2014 were as follows:
	(In thousands)
	The year ended June 30,
	2015	$	-
	2016		-
	2017		2,500
	2018		4,500
	2019		5,500
	Due after 2019		2,000
		$	14,500

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive (Loss) Income (Tables)	12 Months Ended
	Jun. 30, 2014
Accumulated Other Comprehensive (Loss) Income [Abstract]	'
Components of Accumulated Other Comprehensive Income	'
	The components of accumulated other comprehensive loss as of June 30, 2014 and 2013, respectively, are presented in the following table:
	(In thousands)	30-Jun-14			30-Jun-13
	Unrealized gains on available for sale securities, net of tax	$	416		$	441
	Unrealized loss on securities transferred to held to maturity, net of tax		(231	)		(15	)
	Net losses and past service liability for defined benefit plan, net of tax		(1,235	)		(1,176	)
	Accumulated other comprehensive loss	$	(1,050	)	$	(750	)

Employee_Benefit_Plans_Tables

Employee Benefit Plans (Tables)	12 Months Ended
	Jun. 30, 2014
Employee Benefit Plans [Abstract]	'
Change in Fair Value of Plan Assets	'
	Information regarding the single-employer defined benefit pension plan at June 30, 2014 and 2013 is as follows:
	(In thousands)
	Change in projected benefit obligation:	2014			2013
	Benefit obligation at beginning of period	$	4,971		$	4,597
	Interest cost		223			176
	Actuarial loss		297			304
	Benefits paid		(180	)		(106	)
	Benefit obligation at June 30		5,311			4,971
	Change in fair value of plan assets:
	Fair value of plan assets at beginning of period		4,637			2,983
	Actual return on plan assets		430			260
	Employer contributions		-			1,500
	Benefits paid		(180	)		(106	)
	Fair value of plan assets at June 30	$	4,887		$	4,637
	Underfunded status at June 30 included in other liabilities	$	424		$	334
Schedule Of Net Periodic Pension Costs	'
	The components of net periodic pension costs related to the defined benefit pension plan for the years ended June 30, 2014 and 2013 were as follows:
	(In thousands)	2014			2013
	Interest cost	$	223		$	176
	Expected return on plan assets		(318	)		(201	)
	Amortization of net loss		89			76
	Net periodic pension (income) cost	$	(6	)	$	51
Schedule of Amounts Recognized in Other Comprehensive Income (Loss)	'
	Changes in plan assets and benefit obligations recognized in other comprehensive loss during the years ended June 30, 2014 and 2013 consisted of the following:
	(In thousands)	2014			2013
	Actuarial loss on plan assets and benefit obligations	$	96		$	169
	Deferred tax benefit		37			65
	Net change in plan assets and benefit obligations recognized in other comprehensive income	$	59		$	104
Schedule of Amounts Recognized in Financial Condition	'
	Amounts recognized in our consolidated statements of financial condition related to our pension plan for the years ended June 30, 2014 and 2013 are as follows:
	(In thousands)
	Other liabilities:	2014			2013
	Projected benefit obligation in excess of fair value of pension plan	$	424		$	334
	Accumulated other comprehensive income, net of taxes:
	Net losses and past service liability	$	(1,235	)	$	(1,176	)
Schedule of Assumptions Used	'
	The principal actuarial assumptions used were as follows:
	Projected benefit obligation:	2014			2013
	Discount rate		4.22	%		4.57	%
	Net periodic pension expense:
	Amortization period, in years		15			16
	Discount rate		4.57	%		3.93	%
	Expected long-term rate of return on plan assets		7	%		7	%
Schedule of Allocation of Plan Assets	'
	The weighted average asset allocation and fair value of our funded pension plan at June 30, 2014 and 2013 was as follows:
	(Dollars in thousands)	2014						2013
		Fair Value						Fair Value
	Money market accounts	$	15			0.3	%	$	15	0.3	%
	Mutual funds		4,872			99.7	%		4,622	99.7	%
	Total plan assets	$	4,887			100	%	$	4,637	100	%
Schedule of Expected Benefit Payments	'
	Expected benefit payments under the pension plan over the next ten years at June 30, 2014 are as follows:
	(In thousands)
	2015	$	189
	2016		188
	2017		220
	2018		219
	2019		234
	2020-2024		1,233

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	12 Months Ended
	Jun. 30, 2014
Stock-Based Compensation [Abstract]	'
Summary of Stock Option Activity	'
	A summary of the Company’s stock option activity and related information for its option plans for the years ended June 30, 2014 and 2013 is as follows:
			2014								2013
							Weighted Average								Weighted Average
							Exercise								Exercise
							Price								Price
			Options				Per Share				Options				Per Share
	Outstanding at beginning of year			87,400			$	12.5				103,700			$	12.5
	Exercised			(27,965	)		$	12.5				(16,300	)		$	12.5
	Outstanding at period end			59,435			$	12.5				87,400			$	12.5
	Exercisable at period end			59,435			$	12.5				87,400			$	12.5
Options Outstanding and Exercisable	'
	The following table presents stock options outstanding and exercisable at June 30, 2014:
	Options Outstanding and Exercisable
	Range of Exercise Prices				Number Outstanding				Weighted Average Remaining Contractual Life				Weighted Average Exercise Price
	$	12.5				59,435				4.25			$	12.5

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	12 Months Ended
	Jun. 30, 2014
Earnings Per Share [Abstract]	'
Schedule of Earnings Per Share, Basic and Diluted	'
	There were no anti-dilutive securities or contracts outstanding during the years ended June 30, 2014 and 2013.
		Net Income		Weighted Average Number Of Shares Outstanding		Earnings per Share
	Year ended June 30, 2014	$	6,528,000
	Basic				4,205,945	$	1.55
	Effect of dilutive stock options				35,311		(0.01	)
	Diluted				4,241,256	$	1.54
	Year ended June 30, 2013	$	6,371,000
	Basic				4,187,340	$	1.52
	Effect of dilutive stock options				36,159		(0.01	)
	Diluted				4,223,499	$	1.51

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Jun. 30, 2014
Income Taxes [Abstract]	'
Provision for Income Taxes	'
	The provision for income taxes consists of the following for the years ended June 30, 2014 and 2013:
	(In thousands)	2014			2013
	Current expense:
	Federal	$	2,246		$	2,070
	State		273			278
	Total current expense		2,519			2,348
	Deferred expense		18			324
	Total provision for income taxes	$	2,537		$	2,672
Effective Tax Rate Reconciliation	'
	The effective tax rate differs from the federal statutory rate as follows for the years ended June 30, 2014 and 2013:
		2014			2013
	Tax based on federal statutory rate		34	%		34	%
	State income taxes, net of federal benefit		1.02			1.04
	Tax-exempt income		(7.97	)		(6.65	)
	Other, net		0.94			1.16
	Total income tax expense		27.99	%		29.55	%
Deferred Tax Assets and Liabilities	'
	The components of the deferred tax assets and liabilities at June 30 were as follows:
	(In thousands)	2014			2013
	Deferred tax assets:
	Allowance for loan losses	$	2,870		$	2,724
	Pension benefits		164			129
	Other		653			553
	Total deferred tax assets		3,687			3,406
	Deferred tax liabilities:
	Depreciation		1,405			1,470
	Loan costs		634			514
	Real estate investment trust income		1,614			1,406
	Unrealized gains on securities		116			269
	Total deferred tax liabilities		3,769			3,659
	Net deferred tax liability included in other liabilities	$	(82	)	$	(253	)

Commitments_and_Contingent_Lia1

Commitments and Contingent Liabilities (Tables)	12 Months Ended
	Jun. 30, 2014
Commitments and Contingent Liabilities [Abstract]	'
Unfunded Loan Commitments	'
	The Bank of Greene County’s unfunded loan commitments are as follows at June 30, 2014 and 2013:
	(In thousands)	2014		2013
	Nonresidential mortgage loan commitments	$	8,757	$	5,396
	Residential mortgage loan commitments		2,380		6,171
	Construction and land loan commitments		3,138		2,230
	Unused portion of overdraft lines of credit		706		719
	Unused portion of home equity lines of credit		8,159		7,703
	Unused portion of commercial lines of credit		14,419		10,815
	Commercial loan commitments		226		298
	Total commitments	$	37,785	$	33,332

Operating_Leases_Tables

Operating Leases (Tables)	12 Months Ended
	Jun. 30, 2014
Operating Leases [Abstract]	'
Schedule of Non-Cancelable Lease Commitments	'
	Minimum non-cancelable lease commitments for future years ending June 30 are as follows:
	The year ended June 30, (In thousands)	Annual Lease Payments
	2015	$	70
	2016		64
	2017		26
	Thereafter		-
	Total payments	$	160

Fair_Value_Measurements_and_Fa1

Fair Value Measurements and Fair Value of Financial Instruments (Tables)	12 Months Ended
	Jun. 30, 2014
Fair Value Measurements and Fair Value of Financial Instruments [Abstract]	'
Fair Value, Assets Measured on Recurring Basis	'
	For assets measured at fair value on a recurring basis, the fair value measurements by level within the fair value hierarchy used are as follows:
						Fair Value Measurements Using
						Quoted Prices In Active Markets For Identical Assets				Significant Other Observable Inputs				Significant Unobservable Inputs
	(In thousands)		30-Jun-14			(Level 1)				(Level 2)				(Level 3)
	Assets:
	U.S. Government sponsored enterprises		$	10,898		$	-			$	10,898			$	-
	State and political subdivisions			1,347			-				1,347				-
	Mortgage-backed securities-residential			9,545			-				9,545				-
	Mortgage-backed securities-multi-family			29,018			-				29,018				-
	Asset-backed securities			13			13				-				-
	Corporate debt securities			5,170			5,170				-				-
	Equity securities			160			160				-				-
	Securities available for sale		$	56,151		$	5,343			$	50,808			$	-
						Fair Value Measurements Using
						Quoted Prices In Active Markets For Identical Assets				Significant Other Observable Inputs				Significant Unobservable Inputs
	(In thousands)		30-Jun-13			(Level 1)				(Level 2)				(Level 3)
	Assets:
	U.S. Government sponsored enterprises		$	12,989		$	-			$	12,989			$	-
	State and political subdivisions			1,858			-				1,858				-
	Mortgage-backed securities-residential			7,533			-				7,533				-
	Mortgage-backed securities-multi-family			41,919			-				41,919				-
	Asset-backed securities			16			16				-				-
	Corporate debt securities			5,176			5,176				-				-
	Equity securities			153			153				-				-
	Securities available for sale		$	69,644		$	5,345			$	64,299			$	-
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques	'
	Estimates of fair value used for other collateral supporting commercial loans generally are based on assumptions not observable in the marketplace and therefore such valuations have been classified as Level 3.
						Fair Value Measurements Using
	(In thousands)		Fair Value			(Level 1)				(Level 2)				(Level 3)
	30-Jun-14
	Impaired loans		$	3,527		$	-			$	-			$	3,527
	Foreclosed real estate			382			-				-				382
	30-Jun-13
	Impaired loans		$	5,460		$	-			$	-			$	5,460
Fair Value Inputs, Assets, Quantitative Information	'
	The following table presents additional quantitative information about assets measured at fair value on a nonrecurring basis and for which Level 3 inputs were utilized to determine fair value:
	(Dollars in thousands)		Fair Value		Valuation Technique	Unobservable Input		Range				Weighted Average
	30-Jun-14
	Impaired loans		$	3,527	Appraisal of collateral (1)	Appraisal adjustments (2)			0.00%-38.8	%%			15.26	%
						Liquidation expenses (3)			0.00%-9.2	%%			3.82	%
	Foreclosed real estate			382	Appraisal of collateral (1)	Appraisal adjustments (2)			9.30%-19.0	%%			12.18	%
						Liquidation expenses (3)			6.00%-10.8	%%			7.95	%
	30-Jun-13
	Impaired loans		$	5,460	Appraisal of collateral (1)	Appraisal adjustments (2)			4.00%-41.7	%%			23.98	%
						Liquidation expenses (3)			3.49%-9.5	%%			5.86	%
		-1	Fair value is generally determined through independent third-party appraisals of the underlying collateral, which generally includes various Level 3 inputs which are not observable.
		-2	Appraisals may be adjusted downwards by management for qualitative factors such as economic conditions.  Higher downward adjustments are caused by negative changes to the collateral or conditions in the real estate market, actual offers or sales contracts received or age of the appraisal.
		-3	Appraisals may be adjusted downwards by management for qualitative factors such as the estimated costs to liquidate the collateral.
Carrying Amounts and Estimated Fair Value	'
	The carrying amounts and estimated fair value of financial instruments are as follows:
	(In thousands)		30-Jun-14							Fair Value Measurements Using
			Carrying Amount			Fair Value				(Level 1)				(Level 2)		(Level 3)
	Cash and cash equivalents		$	13,809		$	13,809			$	13,809			$	-	$	-
	Long term certificate of deposit			250			250				250				-		-
	Securities available for sale			56,151			56,151				5,343				50,808		-
	Securities held to maturity			181,946			181,932				-				181,932		-
	Federal Home Loan Bank stock			1,561			1,561				-				1,561		-
	Net loans			399,309			406,718				-				-		406,718
	Accrued interest receivable			2,710			2,710				-				2,710		-
	Deposits			589,574			589,681				-				589,681		-
	Federal Home Loan Bank borrowings			17,650			17,465				-				17,465		-
	Accrued interest payable			66			66				-				66		-
	(In thousands)		30-Jun-13							Fair Value Measurements Using
			Carrying Amount			Fair Value				(Level 1)				(Level 2)		(Level 3)
	Cash and cash equivalents		$	6,222		$	6,222			$	6,222			$	-	$	-
	Long term certificate of deposit			250			250				250				-		-
	Securities available for sale			69,644			69,644				5,345				64,299		-
	Securities held to maturity			176,519			177,660				-				177,660		-
	Federal Home Loan Bank stock			1,388			1,388				-				1,388		-
	Net loans			359,426			367,377				-				-		367,377
	Accrued interest receivable			2,663			2,663				-				2,663		-
	Deposits			558,439			558,517				-				558,517		-
	Federal Home Loan Bank borrowings			14,600			14,378				-				14,378		-
	Accrued interest payable			55			55				-				55		-

Regulatory_Matters_Tables

Regulatory Matters (Tables)	12 Months Ended
	Jun. 30, 2014
Regulatory Matters [Abstract]	'
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations	'
	Management believes, as of June 30, 2014, that The Bank of Greene County and Greene County Commercial Bank meet all capital adequacy requirements to which they are subject.
												To Be Well
												Capitalized Under
							For Capital					Prompt Corrective
	(Dollars in thousands)	Actual					Adequacy Purposes					Action Provisions
	The Bank of Greene County	Amount		Ratio			Amount		Ratio			Amount		Ratio
	As of June 30, 2014:
	Total risk-based capital	$	63,918		18.5	%	$	27,600		8	%	$	34,499		10	%
	Tier 1 risk-based capital		59,523		17.3			13,800		4			20,700		6
	Tier 1 leverage ratio		59,523		8.8			20,257		3			33,761		5
	As of June 30, 2013:
	Total risk-based capital	$	58,892		18.5	%	$	25,424		8	%	$	31,780		10	%
	Tier 1 risk-based capital		54,843		17.3			12,712		4			19,068		6
	Tier 1 leverage ratio		54,843		8.6			19,050		3			31,751		5
	Greene County Commercial Bank
	As of June 30, 2014:
	Total risk-based capital	$	17,211		40.6	%	$	3,388		8	%	$	4,236		10	%
	Tier 1 risk-based capital		17,211		40.6			1,694		4			2,541		6
	Tier 1 leverage ratio		17,211		8.2			8,369		4			10,461		5
	As of June 30, 2013:
	Total risk-based capital	$	15,256		39.5	%	$	3,091		8	%	$	3,864		10	%
	Tier 1 risk-based capital		15,256		39.5			1,546		4			2,318		6
	Tier 1 leverage ratio		15,256		7.7			7,912		4			9,890		5

Condensed_Financial_Statements1

Condensed Financial Statements of Greene County Bancorp, Inc. (Tables)	12 Months Ended
	Jun. 30, 2014
Condensed Financial Statements of Greene County Bancorp, Inc. [Abstract]	'
Condensed Balance Sheet	'
	Greene County Bancorp, Inc.
	Condensed Statements of Financial Condition
	As of June 30, 2014 and 2013
	(In thousands)
	ASSETS		2014			2013
	Cash and cash equivalents		$	2,817		$	2,114
	Investment in subsidiaries			58,419			54,038
	Prepaid expenses and other assets			16			16
	Total assets		$	61,252		$	56,168
	LIABILITIES AND SHAREHOLDERS’ EQUITY
	Total liabilities		$	52		$	60
	Total shareholders’ equity			61,200			56,108
	Total liabilities and shareholders’ equity		$	61,252		$	56,168
Condensed Income Statement	'
	Greene County Bancorp, Inc.
	Condensed Statements of Income
	For the Years Ended June 30, 2014 and 2013
	(In thousands)
			2014			2013
	INCOME:
	Equity in undistributed net income of subsidiaries		$	4,682		$	6,501
	Dividend distributed by subsidiary			2,004			4
	Interest earning deposits			7			12
	Total income		$	6,693		$	6,517
	OPERATING EXPENSES:
	Legal fees			62			46
	Other			103			100
	Total operating expenses			165			146
	Net income		$	6,528		$	6,371
Condensed Comprehensive Income Statement	'
	Greene County Bancorp, Inc.
	Condensed Statements of Comprehensive Income
	For the Years Ended June 30, 2014 and 2013
	(In thousands)
			2014			2013
	Net Income		$	6,528		$	6,371
	Other comprehensive (loss) income:
	Unrealized holding (losses) gains on available for sale securities,
	net of income taxes of ($327) and ($526), respectively			(518	)		(833	)
	Reclassification adjustment for gain on sale of securities realized in net income
	net of income taxes of $- and ($4) respectively(1)			-			(6	)
	Accretion of unrealized loss on securities transferred to held to maturity,
	net of income taxes of $175 and $13, respectively(2)			277			20
	Pension actuarial loss, net of income taxes of ($37) and ($65)(3)			(59	)		(104	)
	Total other comprehensive loss, net of taxes			(300	)		(923	)
	Comprehensive income		$	6,228		$	5,448
		-1	Amounts are included in net gain on sale of available for sale securities on the Consolidated Statements of Income in total non-interest income.
		-2	The accretion of the unrealized holding losses in accumulated other comprehensive income at the date of transfer partially offsets the amortization of the difference between the par value and fair value of the investment securities at the date of transfer, and is an adjustment of interest income.
		-3	These accumulated other comprehensive income components are included in the computation of net periodic benefit cost and are included in salaries and employee benefit expense within noninterest expense (see Note 9 for additional details).
Condensed Cash Flow Statement	'
	Greene County Bancorp, Inc.
	Condensed Statements of Cash Flows
	For the Years Ended June 30, 2014 and 2013
	(In thousands)
	Cash flow from operating activities:		2014			2013
	Net Income		$	6,528		$	6,371
	Adjustments to reconcile net income to cash provided by (used by) operating activities:
	Undistributed earnings of subsidiaries			(4,682	)		(6,501	)
	Tax benefit of stock based compensation			(28	)		-
	Net increase in prepaid expenses and other assets			-			(2	)
	Net increase in total liabilities			20			3
	Net cash provided by (used by) operating activities			1,838			(129	)
	Cash flows from financing activities:
	Payment of cash dividends			(1,335	)		(2,128	)
	Proceeds from exercise of stock options			172			124
	Excess tax benefit from share-based payment arrangements			28			-
	Net cash used in financing activities			(1,135	)		(2,004	)
	Net (decrease) increase in cash and cash equivalents			703			(2,133	)
	Cash and cash equivalents at beginning of year			2,114			4,247
	Cash and cash equivalents at end of year		$	2,817		$	2,114

Summary_of_significant_account2

Summary of significant accounting policies (Details) (USD $)	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
	Office
Summary of significant accounting policies [Abstract]	'	'
Number of Offices	12	'
Interest-bearing Deposits in Banks and Other Financial Institutions	$4,800,000	$809,000
Percentantage of stock authorized for repurchase (in hundredths)	5.00%	'
Maximum shares authorized for repurchase (in shares)	92,346	'
Total number of shares repurchased under the plan (in shares)	62,478	'
Number of shares repurchased during the period (in shares)	0	0
Advertising Expense	$278,000	$369,000
Building and improvements [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, Plant and Equipment, Useful Life	'39 years	'
Furniture and equipment [Member] | Minimum [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, Plant and Equipment, Useful Life	'3 years	'
Furniture and equipment [Member] | Maximum [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, Plant and Equipment, Useful Life	'8 years	'

Balances_at_other_banks_Detail

Balances at other banks (Details) (USD $)	Jun. 30, 2014	Jun. 30, 2013
In Millions, unless otherwise specified
Balances at other banks [Abstract]	'	'
Restricted Cash and Cash Equivalents	$1.20	$1.10

Securities_Narrative_Details

Securities - Narrative (Details) (USD $)	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
	Security
Schedule of Investments [Line Items]	'	'
Securities in Unrealized Loss Positions For Twelve Months Or More, Qualitative Disclosure, Number of Positions	27	'
Securities in Unrealized Loss Positions For Less Than Twelve Months, Qualitative Disclosure, Number of Positions	51	'
Securities Pledged as Collateral for Deposits in Excess of FDIC Insurance Limits, Fair Value	$210,000,000	$200,900,000
Securities Pledged as Collateral for Potential Borrowings at the Federal Reserve Bank Discount Window	5,200,000	5,200,000
Available for sale securities transferred at fair value to held to maturity	11,735,000	0
Unrealized losses on transfer of securities	$805,000	'
Mortgage-backed securities [Member]	'	'
Schedule of Investments [Line Items]	'	'
Securities in Unrealized Loss Positions For Twelve Months Or More, Qualitative Disclosure, Number of Positions	13	'
Securities in Unrealized Loss Positions For Less Than Twelve Months, Qualitative Disclosure, Number of Positions	15	'
State and political subdivisions [Member]	'	'
Schedule of Investments [Line Items]	'	'
Securities in Unrealized Loss Positions For Twelve Months Or More, Qualitative Disclosure, Number of Positions	11	'
Securities in Unrealized Loss Positions For Less Than Twelve Months, Qualitative Disclosure, Number of Positions	33	'
Corporate debt securities [Member]	'	'
Schedule of Investments [Line Items]	'	'
Securities in Unrealized Loss Positions For Less Than Twelve Months, Qualitative Disclosure, Number of Positions	1	'
Asset-backed securities [Member]	'	'
Schedule of Investments [Line Items]	'	'
Securities in Unrealized Loss Positions For Twelve Months Or More, Qualitative Disclosure, Number of Positions	1	'
U.S. Government sponsored enterprises [Member]	'	'
Schedule of Investments [Line Items]	'	'
Securities in Unrealized Loss Positions For Less Than Twelve Months, Qualitative Disclosure, Number of Positions	1	'
Other securities [Member]	'	'
Schedule of Investments [Line Items]	'	'
Securities in Unrealized Loss Positions For Twelve Months Or More, Qualitative Disclosure, Number of Positions	2	'
Securities in Unrealized Loss Positions For Less Than Twelve Months, Qualitative Disclosure, Number of Positions	1	'

Securities_Unrealized_Gain_Los

Securities - Unrealized Gain (Loss) on Investments (Details) (USD $)	Jun. 30, 2014	Jun. 30, 2013
In Thousands, unless otherwise specified
Securities available for sale [Abstract]	'	'
Available-for-sale Securities, Amortized Cost Basis	$55,473	$68,926
Gross Unrealized Gains	1,048	1,236
Gross Unrealized Losses	370	518
Securities available for sale, at fair value	56,151	69,644
Securities held to maturity [Abstract]	'	'
Total held-to-maturity securities	181,946	176,519
Gross Unrealized Gains	2,697	3,146
Gross Unrealized Losses	2,711	2,005
Estimated Fair Value	181,932	177,660
Total securities [Abstract]	'	'
Total Securities, Amortized Cost	237,419	245,445
Total Securities, Gross Unrealized Gains	3,745	4,382
Total Securities, Gross Unrealized Losses	3,081	2,523
Total Securities, Estimated Fair Value	238,083	247,304
US Treasury securities [Member]	'	'
Securities held to maturity [Abstract]	'	'
Total held-to-maturity securities	'	5,500
Gross Unrealized Gains	'	17
Gross Unrealized Losses	'	0
Estimated Fair Value	'	5,517
U.S. Government sponsored enterprises [Member]	'	'
Securities available for sale [Abstract]	'	'
Available-for-sale Securities, Amortized Cost Basis	10,648	12,729
Gross Unrealized Gains	250	260
Gross Unrealized Losses	0	0
Securities available for sale, at fair value	10,898	12,989
Securities held to maturity [Abstract]	'	'
Total held-to-maturity securities	2,000	2,999
Gross Unrealized Gains	0	16
Gross Unrealized Losses	102	113
Estimated Fair Value	1,898	2,902
State and political subdivisions [Member]	'	'
Securities available for sale [Abstract]	'	'
Available-for-sale Securities, Amortized Cost Basis	1,324	1,849
Gross Unrealized Gains	23	29
Gross Unrealized Losses	0	20
Securities available for sale, at fair value	1,347	1,858
Securities held to maturity [Abstract]	'	'
Total held-to-maturity securities	91,634	82,801
Gross Unrealized Gains	787	362
Gross Unrealized Losses	204	755
Estimated Fair Value	92,217	82,408
Mortgage-backed securities-residential [Member]	'	'
Securities available for sale [Abstract]	'	'
Available-for-sale Securities, Amortized Cost Basis	9,345	7,340
Gross Unrealized Gains	213	193
Gross Unrealized Losses	13	0
Securities available for sale, at fair value	9,545	7,533
Securities held to maturity [Abstract]	'	'
Total held-to-maturity securities	22,785	29,077
Gross Unrealized Gains	1,150	1,515
Gross Unrealized Losses	0	9
Estimated Fair Value	23,935	30,583
Mortgage-backed securities-multi-family [Member]	'	'
Securities available for sale [Abstract]	'	'
Available-for-sale Securities, Amortized Cost Basis	29,268	42,096
Gross Unrealized Gains	89	289
Gross Unrealized Losses	339	466
Securities available for sale, at fair value	29,018	41,919
Securities held to maturity [Abstract]	'	'
Total held-to-maturity securities	64,605	55,086
Gross Unrealized Gains	759	1,236
Gross Unrealized Losses	2,381	1,093
Estimated Fair Value	62,983	55,229
Other securities [Member]	'	'
Securities held to maturity [Abstract]	'	'
Total held-to-maturity securities	922	1,056
Gross Unrealized Gains	1	0
Gross Unrealized Losses	24	35
Estimated Fair Value	899	1,021
Asset-backed securities [Member]	'	'
Securities available for sale [Abstract]	'	'
Available-for-sale Securities, Amortized Cost Basis	15	17
Gross Unrealized Gains	0	0
Gross Unrealized Losses	2	1
Securities available for sale, at fair value	13	16
Corporate debt securities [Member]	'	'
Securities available for sale [Abstract]	'	'
Available-for-sale Securities, Amortized Cost Basis	4,811	4,827
Gross Unrealized Gains	375	380
Gross Unrealized Losses	16	31
Securities available for sale, at fair value	5,170	5,176
Debt securities [Member]	'	'
Securities available for sale [Abstract]	'	'
Available-for-sale Securities, Amortized Cost Basis	55,411	68,858
Gross Unrealized Gains	950	1,151
Gross Unrealized Losses	370	518
Securities available for sale, at fair value	55,991	69,491
Equity securities [Member]	'	'
Securities available for sale [Abstract]	'	'
Available-for-sale Securities, Amortized Cost Basis	62	68
Gross Unrealized Gains	98	85
Gross Unrealized Losses	0	0
Securities available for sale, at fair value	$160	$153

Securities_Continuous_Unrealiz

Securities - Continuous Unrealized Loss Position, Fair Value (Details) (USD $)	Jun. 30, 2014	Jun. 30, 2013
In Thousands, unless otherwise specified
Securities available for sale [Abstract]	'	'
Less than 12 Months: Available-for-Sale, Fair Value	$9,517	$34,847
12 Months or More: Available-for-Sale, Fair Value	19,417	16
Total: Available-for-Sale, Fair Value	28,934	34,863
Less than 12 Months: Available-for-Sale, Unrealized Losses	34	517
12 Months or More: Available-for-Sale, Unrealized Losses	336	1
Total: Available-for-Sale, Unrealized Losses	370	518
Securities held to maturity [Abstract]	'	'
Less than 12 Months: Held-to-Maturity, Fair Value	35,243	65,509
12 Months or More: Held-to-Maturity, Fair Value	17,656	1,597
Total: Held-to-Maturity, Fair Value	52,899	67,106
Less than 12 Months: Held-to-Maturity, Unrealized Losses	1,896	1,995
12 Months or More: Held-to-Maturity, Unrealized Losses	815	10
Total: Held-to-Maturity, Unrealized Losses	2,711	2,005
Total securities [Abstract]	'	'
Less than 12 Months: Total Fair Value	44,760	100,356
Less Than 12 Months: Total Unrealized Losses	1,930	2,512
12 Months or More: Total Fair Value	37,073	1,613
12 Months or More: Total Unrealized Losses	1,151	11
Total Fair Value	81,833	101,969
Total Unrealized Losses	3,081	2,523
U.S. Government sponsored enterprises [Member]	'	'
Securities held to maturity [Abstract]	'	'
Less than 12 Months: Held-to-Maturity, Fair Value	1,898	1,887
12 Months or More: Held-to-Maturity, Fair Value	0	0
Total: Held-to-Maturity, Fair Value	1,898	1,887
Less than 12 Months: Held-to-Maturity, Unrealized Losses	102	113
12 Months or More: Held-to-Maturity, Unrealized Losses	0	0
Total: Held-to-Maturity, Unrealized Losses	102	113
State and political subdivisions [Member]	'	'
Securities available for sale [Abstract]	'	'
Less than 12 Months: Available-for-Sale, Fair Value	4,302	791
12 Months or More: Available-for-Sale, Fair Value	0	0
Total: Available-for-Sale, Fair Value	4,302	791
Less than 12 Months: Available-for-Sale, Unrealized Losses	13	20
12 Months or More: Available-for-Sale, Unrealized Losses	0	0
Total: Available-for-Sale, Unrealized Losses	13	20
Securities held to maturity [Abstract]	'	'
Less than 12 Months: Held-to-Maturity, Fair Value	6,693	28,597
12 Months or More: Held-to-Maturity, Fair Value	1,815	1,597
Total: Held-to-Maturity, Fair Value	8,508	30,194
Less than 12 Months: Held-to-Maturity, Unrealized Losses	175	745
12 Months or More: Held-to-Maturity, Unrealized Losses	29	10
Total: Held-to-Maturity, Unrealized Losses	204	755
Mortgage-backed securities-residential [Member]	'	'
Securities held to maturity [Abstract]	'	'
Less than 12 Months: Held-to-Maturity, Fair Value	'	1,228
12 Months or More: Held-to-Maturity, Fair Value	'	0
Total: Held-to-Maturity, Fair Value	'	1,228
Less than 12 Months: Held-to-Maturity, Unrealized Losses	'	9
12 Months or More: Held-to-Maturity, Unrealized Losses	'	0
Total: Held-to-Maturity, Unrealized Losses	0	9
Mortgage-backed securities-multi-family [Member]	'	'
Securities available for sale [Abstract]	'	'
Less than 12 Months: Available-for-Sale, Fair Value	4,448	33,298
12 Months or More: Available-for-Sale, Fair Value	19,404	0
Total: Available-for-Sale, Fair Value	23,852	33,298
Less than 12 Months: Available-for-Sale, Unrealized Losses	5	466
12 Months or More: Available-for-Sale, Unrealized Losses	334	0
Total: Available-for-Sale, Unrealized Losses	339	466
Securities held to maturity [Abstract]	'	'
Less than 12 Months: Held-to-Maturity, Fair Value	26,522	33,044
12 Months or More: Held-to-Maturity, Fair Value	15,440	0
Total: Held-to-Maturity, Fair Value	41,962	33,044
Less than 12 Months: Held-to-Maturity, Unrealized Losses	1,617	1,093
12 Months or More: Held-to-Maturity, Unrealized Losses	764	0
Total: Held-to-Maturity, Unrealized Losses	2,381	1,093
Asset-backed securities [Member]	'	'
Securities available for sale [Abstract]	'	'
Less than 12 Months: Available-for-Sale, Fair Value	0	0
12 Months or More: Available-for-Sale, Fair Value	13	16
Total: Available-for-Sale, Fair Value	13	16
Less than 12 Months: Available-for-Sale, Unrealized Losses	0	0
12 Months or More: Available-for-Sale, Unrealized Losses	2	1
Total: Available-for-Sale, Unrealized Losses	2	1
Other securities [Member]	'	'
Securities held to maturity [Abstract]	'	'
Less than 12 Months: Held-to-Maturity, Fair Value	130	753
12 Months or More: Held-to-Maturity, Fair Value	401	0
Total: Held-to-Maturity, Fair Value	531	753
Less than 12 Months: Held-to-Maturity, Unrealized Losses	2	35
12 Months or More: Held-to-Maturity, Unrealized Losses	22	0
Total: Held-to-Maturity, Unrealized Losses	24	35
Corporate debt securities [Member]	'	'
Securities available for sale [Abstract]	'	'
Less than 12 Months: Available-for-Sale, Fair Value	767	758
12 Months or More: Available-for-Sale, Fair Value	0	0
Total: Available-for-Sale, Fair Value	767	758
Less than 12 Months: Available-for-Sale, Unrealized Losses	16	31
12 Months or More: Available-for-Sale, Unrealized Losses	0	0
Total: Available-for-Sale, Unrealized Losses	$16	$31

Securities_Schedule_of_Realize

Securities - Schedule of Realized Gain (Loss) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Securities [Abstract]	'	'
Gross realized gains on sale of available-for-sale securities	$0	$10
Other-than-temporary impairment losses	0	0
Net realized gains (losses)	$0	$10

Securities_Investments_Classif

Securities - Investments Classified by Contractual Maturity Date (Details) (USD $)	Jun. 30, 2014	Jun. 30, 2013
In Thousands, unless otherwise specified
Available for sale debt securities, Amortized Cost [Abstract]	'	'
Within one year	$3,265	'
After one year through five years	8,891	'
After five years through ten years	4,627	'
After ten years	0	'
Total available-for-sale debt securities	16,783	'
Mortgage-backed and asset-backed securities	38,628	'
Equity securities	62	'
Available-for-sale Securities, Amortized Cost Basis	55,473	68,926
Held to maturity debt securities, Amortized Cost [Abstract]	'	'
Within one year	29,835	'
After one year through five years	38,047	'
After five years through ten years	19,286	'
After ten years	7,388	'
Total held-to-maturity debt securities	94,556	'
Mortgage-backed	87,390	'
Total held-to-maturity securities	181,946	176,519
Total securities, Amortized Cost	237,419	245,445
Available for sale debt securities, Fair Value [Abstract]	'	'
Within one year	3,280	'
After one through five years	9,312	'
After five through ten years	4,823	'
After ten years	0	'
Total available-for-sale debt securities	17,415	'
Mortgage-backed and asset-backed securities	38,576	'
Equity securities	160	'
Estimated Fair Value	56,151	69,644
Held to maturity debt securities, Fair Value [Abstract]	'	'
Within one year	29,879	'
After one year through five years	38,564	'
After five years through ten years	19,254	'
After ten years	7,317	'
Total held-to-maturity debt securities	95,014	'
Mortgage-backed securities	86,918	'
Estimated Fair Value	181,932	177,660
Total securities	238,083	'
Equity securities [Member]	'	'
Available for sale debt securities, Amortized Cost [Abstract]	'	'
Available-for-sale Securities, Amortized Cost Basis	62	68
Available for sale debt securities, Fair Value [Abstract]	'	'
Estimated Fair Value	$160	$153

Loans_Major_Loan_Segments_and_

Loans - Major Loan Segments and Classes (Details) (USD $)	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
In Thousands, unless otherwise specified
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total gross loans	$405,841	$365,839	'
Allowance for loan losses	-7,419	-7,040	-6,177
Deferred loan fees and costs	887	627	'
Net loans receivable	399,309	359,426	'
Residential [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total gross loans	227,373	212,526	'
Allowance for loan losses	-2,731	-2,627	-2,163
Nonresidential [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total gross loans	114,066	91,482	'
Allowance for loan losses	-2,936	-2,476	-2,076
Construction and land [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total gross loans	4,563	6,214	'
Multifamily [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total gross loans	4,059	5,511	'
Allowance for loan losses	-59	-139	-337
Total real estate mortages [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total gross loans	350,061	315,733	'
Home equity loans [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total gross loans	20,578	20,371	'
Allowance for loan losses	-361	-275	-187
Consumer installment [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total gross loans	4,208	4,078	'
Allowance for loan losses	-240	-222	-207
Commercial loans [Member]	'	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Total gross loans	30,994	25,657	'
Allowance for loan losses	($811)	($809)	($645)

Loans_Loan_Balances_by_Interna

Loans - Loan Balances by Internal Credit Quality Indicator (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
	Segment
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	$405,841	$365,839
Bank segments	4	'
Residential mortgage [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	227,373	212,526
Maximum loan-to-value ratio (in hundredths)	89.90%	'
Residential Mortgage With Private Mortgage Insurance [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Maximum loan-to-value ratio (in hundredths)	95.00%	'
Nonresidential mortgage [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	114,066	91,482
Residential construction & land [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	3,005	2,691
Commercial construction [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	1,558	3,523
Multi-family [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	4,059	5,511
Home equity [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	20,578	20,371
Consumer installment [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	4,208	4,078
Commercial loans [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	30,994	25,657
Performing [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	395,695	353,683
Performing [Member] | Residential mortgage [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	223,772	207,606
Performing [Member] | Nonresidential mortgage [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	109,281	87,509
Performing [Member] | Residential construction & land [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	3,005	2,691
Performing [Member] | Commercial construction [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	1,558	2,466
Performing [Member] | Multi-family [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	3,946	4,785
Performing [Member] | Home equity [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	20,239	20,099
Performing [Member] | Consumer installment [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	4,208	4,073
Performing [Member] | Commercial loans [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	29,686	24,454
Watch [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	221	520
Watch [Member] | Residential mortgage [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	221	294
Watch [Member] | Nonresidential mortgage [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Watch [Member] | Residential construction & land [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Watch [Member] | Commercial construction [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Watch [Member] | Multi-family [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Watch [Member] | Home equity [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	221
Watch [Member] | Consumer installment [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	5
Watch [Member] | Commercial loans [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Special Mention [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	2,273	3,038
Special Mention [Member] | Residential mortgage [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	99	302
Special Mention [Member] | Nonresidential mortgage [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	1,789	2,197
Special Mention [Member] | Residential construction & land [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Special Mention [Member] | Commercial construction [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Special Mention [Member] | Multi-family [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Special Mention [Member] | Home equity [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	23
Special Mention [Member] | Consumer installment [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Special Mention [Member] | Commercial loans [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	385	516
Substandard [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	7,652	8,598
Substandard [Member] | Residential mortgage [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	3,281	4,324
Substandard [Member] | Nonresidential mortgage [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	2,996	1,776
Substandard [Member] | Residential construction & land [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Substandard [Member] | Commercial construction [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	1,057
Substandard [Member] | Multi-family [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	113	726
Substandard [Member] | Home equity [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	339	28
Substandard [Member] | Consumer installment [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	0	0
Substandard [Member] | Commercial loans [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans and Leases Receivable, Gross, Carrying Amount	$923	$687

Loans_Delinquent_and_Nonaccrua

Loans - Delinquent and Nonaccrual Loans by Past Due Status (Details) (USD $)	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
	Contract	Contract
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 days past due	$1,867,000	$2,485,000
60-89 days past due	917,000	1,447,000
90 days or more past due	5,243,000	6,103,000
Total past due	8,027,000	10,035,000
Current	397,814,000	355,804,000
Total Loans	405,841,000	365,839,000
Loans on Non-accrual	5,899,000	6,326,000
Foreclosure period	'2 years	'
Loans in the process of foreclosure	3,000,000	4,900,000
Nonaccrual loans with recent history of delinquency greater than 90 days	922,000	781,000
Nonaccrual loans making payments pursuant to forbearance agreements	925,000	'
Financing receivable, recorded investment, 90 days past due and still accruing	266,000	559,000
Number of TDR contracts returned to accrual status	2	'
Total number of TDR contracts that were modified	8	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	'	0
Residential mortgage [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 days past due	1,047,000	1,255,000
60-89 days past due	290,000	165,000
90 days or more past due	1,938,000	3,875,000
Total past due	3,275,000	5,295,000
Current	224,098,000	207,231,000
Total Loans	227,373,000	212,526,000
Loans on Non-accrual	2,473,000	3,599,000
Total number of TDR contracts that were modified	3	4
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	2	'
Nonresidential mortgage [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 days past due	0	215,000
60-89 days past due	504,000	978,000
90 days or more past due	2,688,000	1,655,000
Total past due	3,192,000	2,848,000
Current	110,874,000	88,634,000
Total Loans	114,066,000	91,482,000
Loans on Non-accrual	2,775,000	2,018,000
Total number of TDR contracts that were modified	5	2
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	2	'
Residential construction & land [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 days past due	0	38,000
60-89 days past due	0	0
90 days or more past due	0	0
Total past due	0	38,000
Current	3,005,000	2,653,000
Total Loans	3,005,000	2,691,000
Loans on Non-accrual	0	0
Commercial construction [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 days past due	0	0
60-89 days past due	0	0
90 days or more past due	0	0
Total past due	0	0
Current	1,558,000	3,523,000
Total Loans	1,558,000	3,523,000
Loans on Non-accrual	0	0
Multi-family [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 days past due	0	144,000
60-89 days past due	0	0
90 days or more past due	0	463,000
Total past due	0	607,000
Current	4,059,000	4,904,000
Total Loans	4,059,000	5,511,000
Loans on Non-accrual	0	463,000
Home equity [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 days past due	260,000	269,000
60-89 days past due	0	221,000
90 days or more past due	339,000	28,000
Total past due	599,000	518,000
Current	19,979,000	19,853,000
Total Loans	20,578,000	20,371,000
Loans on Non-accrual	339,000	51,000
Consumer installment [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 days past due	51,000	34,000
60-89 days past due	0	5,000
90 days or more past due	0	0
Total past due	51,000	39,000
Current	4,157,000	4,039,000
Total Loans	4,208,000	4,078,000
Loans on Non-accrual	0	0
Commercial loans [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 days past due	509,000	530,000
60-89 days past due	123,000	78,000
90 days or more past due	278,000	82,000
Total past due	910,000	690,000
Current	30,084,000	24,967,000
Total Loans	30,994,000	25,657,000
Loans on Non-accrual	$312,000	$195,000

Loans_Nonaccrual_Loans_Interes

Loans - Nonaccrual Loans, Interest Income Data (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Loans [Abstract]	'	'
Interest income that would have been recorded if loans had been performing in accordance with original terms	$352	$433
Interest income that was recorded on nonaccrual loans	$128	$158

Loans_Impaired_Loans_By_Loan_P

Loans - Impaired Loans By Loan Portfolio Class (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
With no related allowance recorded [Abstract]	'	'
Impaired Loans with No Allowance: Recorded Investment	$763	$1,635
Impaired Loans with No Allowance: Unpaid Principal Balance	763	1,635
Impaired Loans with No Allowance: Related Allowance	0	0
Impaired Loans with No Allowance: Average Recorded Investment	872	1,499
Impaired Loans with No Allowance: Interest Income	46	97
With an allowance recorded [Abstract]	'	'
Impaired Loans with Allowance: Recorded Investment	6,075	6,051
Impaired Loans with Allowance: Unpaid Principal Balance	6,552	6,101
Impaired Loans with Allowance: Related Allowance	869	1,179
Impaired Loans with Allowance: Average Recorded Investment	6,623	6,470
Impaired Loans with Allowance: Interest Income	183	227
Total impaired [Abstract]	'	'
Total Impaired Loans: Recorded Investment	6,838	7,686
Total Impaired Loans: Unpaid Principal Balance	7,315	7,736
Impaired Financing Receivable, Related Allowance	869	1,179
Total Impaired Loans, Average Recorded Investment	7,495	7,969
Total Impaired Loans, Interest Income Recognized	229	324
Residential mortgage [Member]	'	'
With no related allowance recorded [Abstract]	'	'
Impaired Loans with No Allowance: Recorded Investment	206	852
Impaired Loans with No Allowance: Unpaid Principal Balance	206	852
Impaired Loans with No Allowance: Related Allowance	0	0
Impaired Loans with No Allowance: Average Recorded Investment	330	272
Impaired Loans with No Allowance: Interest Income	14	14
With an allowance recorded [Abstract]	'	'
Impaired Loans with Allowance: Recorded Investment	2,700	2,582
Impaired Loans with Allowance: Unpaid Principal Balance	2,790	2,632
Impaired Loans with Allowance: Related Allowance	441	520
Impaired Loans with Allowance: Average Recorded Investment	2,978	2,604
Impaired Loans with Allowance: Interest Income	64	77
Total impaired [Abstract]	'	'
Total Impaired Loans: Recorded Investment	2,906	3,434
Total Impaired Loans: Unpaid Principal Balance	2,996	3,484
Impaired Financing Receivable, Related Allowance	441	520
Total Impaired Loans, Average Recorded Investment	3,308	2,876
Total Impaired Loans, Interest Income Recognized	78	91
Nonresidential mortgage [Member]	'	'
With no related allowance recorded [Abstract]	'	'
Impaired Loans with No Allowance: Recorded Investment	461	783
Impaired Loans with No Allowance: Unpaid Principal Balance	461	783
Impaired Loans with No Allowance: Related Allowance	0	0
Impaired Loans with No Allowance: Average Recorded Investment	518	1,146
Impaired Loans with No Allowance: Interest Income	29	66
With an allowance recorded [Abstract]	'	'
Impaired Loans with Allowance: Recorded Investment	2,572	1,339
Impaired Loans with Allowance: Unpaid Principal Balance	2,959	1,339
Impaired Loans with Allowance: Related Allowance	338	305
Impaired Loans with Allowance: Average Recorded Investment	2,346	1,182
Impaired Loans with Allowance: Interest Income	63	33
Total impaired [Abstract]	'	'
Total Impaired Loans: Recorded Investment	3,033	2,122
Total Impaired Loans: Unpaid Principal Balance	3,420	2,122
Impaired Financing Receivable, Related Allowance	338	305
Total Impaired Loans, Average Recorded Investment	2,864	2,328
Total Impaired Loans, Interest Income Recognized	92	99
Commercial construction [Member]	'	'
With an allowance recorded [Abstract]	'	'
Impaired Loans with Allowance: Recorded Investment	0	1,057
Impaired Loans with Allowance: Unpaid Principal Balance	0	1,057
Impaired Loans with Allowance: Related Allowance	0	331
Impaired Loans with Allowance: Average Recorded Investment	350	1,066
Impaired Loans with Allowance: Interest Income	17	50
Total impaired [Abstract]	'	'
Total Impaired Loans: Recorded Investment	0	1,057
Total Impaired Loans: Unpaid Principal Balance	0	1,057
Impaired Financing Receivable, Related Allowance	0	331
Total Impaired Loans, Average Recorded Investment	350	1,066
Total Impaired Loans, Interest Income Recognized	17	50
Multi-family [Member]	'	'
With an allowance recorded [Abstract]	'	'
Impaired Loans with Allowance: Recorded Investment	0	463
Impaired Loans with Allowance: Unpaid Principal Balance	0	463
Impaired Loans with Allowance: Related Allowance	0	16
Impaired Loans with Allowance: Average Recorded Investment	193	850
Impaired Loans with Allowance: Interest Income	0	26
Total impaired [Abstract]	'	'
Total Impaired Loans: Recorded Investment	0	463
Total Impaired Loans: Unpaid Principal Balance	0	463
Impaired Financing Receivable, Related Allowance	0	16
Total Impaired Loans, Average Recorded Investment	193	850
Total Impaired Loans, Interest Income Recognized	0	26
Home equity [Member]	'	'
With no related allowance recorded [Abstract]	'	'
Impaired Loans with No Allowance: Recorded Investment	96	'
Impaired Loans with No Allowance: Unpaid Principal Balance	96	'
Impaired Loans with No Allowance: Related Allowance	0	'
Impaired Loans with No Allowance: Average Recorded Investment	24	'
Impaired Loans with No Allowance: Interest Income	3	'
With an allowance recorded [Abstract]	'	'
Impaired Loans with Allowance: Recorded Investment	200	0
Impaired Loans with Allowance: Unpaid Principal Balance	200	0
Impaired Loans with Allowance: Related Allowance	87	0
Impaired Loans with Allowance: Average Recorded Investment	150	193
Impaired Loans with Allowance: Interest Income	0	4
Total impaired [Abstract]	'	'
Total Impaired Loans: Recorded Investment	296	0
Total Impaired Loans: Unpaid Principal Balance	296	0
Impaired Financing Receivable, Related Allowance	87	0
Total Impaired Loans, Average Recorded Investment	174	193
Total Impaired Loans, Interest Income Recognized	3	4
Commercial loans [Member]	'	'
With no related allowance recorded [Abstract]	'	'
Impaired Loans with No Allowance: Recorded Investment	'	0
Impaired Loans with No Allowance: Unpaid Principal Balance	'	0
Impaired Loans with No Allowance: Related Allowance	'	0
Impaired Loans with No Allowance: Average Recorded Investment	'	81
Impaired Loans with No Allowance: Interest Income	'	17
With an allowance recorded [Abstract]	'	'
Impaired Loans with Allowance: Recorded Investment	603	610
Impaired Loans with Allowance: Unpaid Principal Balance	603	610
Impaired Loans with Allowance: Related Allowance	3	7
Impaired Loans with Allowance: Average Recorded Investment	606	575
Impaired Loans with Allowance: Interest Income	39	37
Total impaired [Abstract]	'	'
Total Impaired Loans: Recorded Investment	603	610
Total Impaired Loans: Unpaid Principal Balance	603	610
Impaired Financing Receivable, Related Allowance	3	7
Total Impaired Loans, Average Recorded Investment	606	656
Total Impaired Loans, Interest Income Recognized	$39	$54

Loans_Troubled_Debt_Restructur

Loans - Troubled Debt Restructurings on Financing Receivables (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
	Contract	Contract
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Financing Receivable, Modifications, Number of Contracts	8	'
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	'	0
Residential mortgage [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Financing Receivable, Modifications, Number of Contracts	3	4
Financing Receivable, Modifications, Pre-Modification Outstanding Recorded Investment	575	836
Financing Receivable, Modifications, Post-Modification Outstanding Recorded Investment	575	742
Financing Receivable, Modifications, Current Outstanding Recorded Investment	566	739
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	2	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	284	'
Financing Receivable, Modifications, Subsequent Default, Allowance for Loan loss	65	'
Nonresidential mortgage [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Financing Receivable, Modifications, Number of Contracts	5	2
Financing Receivable, Modifications, Pre-Modification Outstanding Recorded Investment	1,789	625
Financing Receivable, Modifications, Post-Modification Outstanding Recorded Investment	1,848	657
Financing Receivable, Modifications, Current Outstanding Recorded Investment	1,589	657
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	2	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	894	'
Financing Receivable, Modifications, Subsequent Default, Allowance for Loan loss	192	'

Loans_Activity_and_Allocation_

Loans - Activity and Allocation of Allowance for Loan Losses (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for Loan Losses, Beginning Balance	$7,040	$6,177
Charge-offs	1,217	971
Recoveries	96	88
Provision	1,500	1,746
Allowance for Loan Losses, Ending Balance	7,419	7,040
Allowance for loan losses: Ending balance: individually evaluated for impairment	869	1,179
Allowance for loan losses: Ending balance: collectively evaluated for impairment	6,550	5,861
Loans receivables: Ending balance: individually evaluated for impairment	6,838	7,686
Loans Receivable: Ending balance: collectively evaluated for impairment	399,003	358,153
Residential mortgage [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for Loan Losses, Beginning Balance	2,627	2,163
Charge-offs	420	421
Recoveries	10	0
Provision	514	885
Allowance for Loan Losses, Ending Balance	2,731	2,627
Allowance for loan losses: Ending balance: individually evaluated for impairment	441	520
Allowance for loan losses: Ending balance: collectively evaluated for impairment	2,290	2,107
Loans receivables: Ending balance: individually evaluated for impairment	2,906	3,434
Loans Receivable: Ending balance: collectively evaluated for impairment	224,467	209,092
Nonresidential mortgage [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for Loan Losses, Beginning Balance	2,476	2,076
Charge-offs	309	233
Recoveries	0	0
Provision	769	633
Allowance for Loan Losses, Ending Balance	2,936	2,476
Allowance for loan losses: Ending balance: individually evaluated for impairment	338	305
Allowance for loan losses: Ending balance: collectively evaluated for impairment	2,598	2,171
Loans receivables: Ending balance: individually evaluated for impairment	3,033	2,122
Loans Receivable: Ending balance: collectively evaluated for impairment	111,033	89,360
Residential construction & land [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for Loan Losses, Beginning Balance	37	19
Charge-offs	0	0
Recoveries	0	0
Provision	5	18
Allowance for Loan Losses, Ending Balance	42	37
Allowance for loan losses: Ending balance: individually evaluated for impairment	0	0
Allowance for loan losses: Ending balance: collectively evaluated for impairment	42	37
Loans receivables: Ending balance: individually evaluated for impairment	0	0
Loans Receivable: Ending balance: collectively evaluated for impairment	3,005	2,691
Commercial construction [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for Loan Losses, Beginning Balance	392	407
Charge-offs	0	0
Recoveries	0	0
Provision	-354	-15
Allowance for Loan Losses, Ending Balance	38	392
Allowance for loan losses: Ending balance: individually evaluated for impairment	0	331
Allowance for loan losses: Ending balance: collectively evaluated for impairment	38	61
Loans receivables: Ending balance: individually evaluated for impairment	0	1,057
Loans Receivable: Ending balance: collectively evaluated for impairment	1,558	2,466
Multi-family [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for Loan Losses, Beginning Balance	139	337
Charge-offs	24	0
Recoveries	7	0
Provision	-63	-198
Allowance for Loan Losses, Ending Balance	59	139
Allowance for loan losses: Ending balance: individually evaluated for impairment	0	16
Allowance for loan losses: Ending balance: collectively evaluated for impairment	59	123
Loans receivables: Ending balance: individually evaluated for impairment	0	463
Loans Receivable: Ending balance: collectively evaluated for impairment	4,059	5,048
Home equity [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for Loan Losses, Beginning Balance	275	187
Charge-offs	44	0
Recoveries	0	0
Provision	130	88
Allowance for Loan Losses, Ending Balance	361	275
Allowance for loan losses: Ending balance: individually evaluated for impairment	87	0
Allowance for loan losses: Ending balance: collectively evaluated for impairment	274	275
Loans receivables: Ending balance: individually evaluated for impairment	296	0
Loans Receivable: Ending balance: collectively evaluated for impairment	20,282	20,371
Consumer installment [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for Loan Losses, Beginning Balance	222	207
Charge-offs	215	246
Recoveries	75	88
Provision	158	173
Allowance for Loan Losses, Ending Balance	240	222
Allowance for loan losses: Ending balance: individually evaluated for impairment	0	0
Allowance for loan losses: Ending balance: collectively evaluated for impairment	240	222
Loans receivables: Ending balance: individually evaluated for impairment	0	0
Loans Receivable: Ending balance: collectively evaluated for impairment	4,208	4,078
Commercial loans [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for Loan Losses, Beginning Balance	809	645
Charge-offs	205	71
Recoveries	4	0
Provision	203	235
Allowance for Loan Losses, Ending Balance	811	809
Allowance for loan losses: Ending balance: individually evaluated for impairment	3	7
Allowance for loan losses: Ending balance: collectively evaluated for impairment	808	802
Loans receivables: Ending balance: individually evaluated for impairment	603	610
Loans Receivable: Ending balance: collectively evaluated for impairment	30,391	25,047
Unallocated [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Allowance for Loan Losses, Beginning Balance	63	136
Charge-offs	0	0
Recoveries	0	0
Provision	138	-73
Allowance for Loan Losses, Ending Balance	201	63
Allowance for loan losses: Ending balance: individually evaluated for impairment	0	0
Allowance for loan losses: Ending balance: collectively evaluated for impairment	201	63
Loans receivables: Ending balance: individually evaluated for impairment	0	0
Loans Receivable: Ending balance: collectively evaluated for impairment	$0	$0

Premises_and_Equipment_Summary

Premises and Equipment - Summary of Premises and Equipment (Details) (USD $)	Jun. 30, 2014	Jun. 30, 2013
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]	'	'
Less: accumulated depreciation	($7,559)	($10,163)
Total premises and equipment	14,307	14,349
Land [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, plant and equipment, gross	2,883	2,883
Building and improvements [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, plant and equipment, gross	15,411	14,888
Furniture and equipment [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, plant and equipment, gross	$3,572	$6,741

Deposits_Narrative_Details

Deposits - Narrative (Details) (USD $)	Jun. 30, 2014	Jun. 30, 2013
Deposits [Abstract]	'	'
Advance Payments by Borrowers for Taxes and Insurance	$5,495,000	$5,048,000

Deposits_Schedule_of_Deposits_

Deposits - Schedule of Deposits (Details) (USD $)	Jun. 30, 2014	Jun. 30, 2013
In Thousands, unless otherwise specified
Deposits [Abstract]	'	'
Noninterest bearing deposits	$67,446	$57,926
Certificates of deposit	48,900	56,181
Savings deposits	165,227	160,004
Money market deposits	87,363	85,685
NOW deposits	220,638	198,643
Total deposits	$589,574	$558,439

Deposits_Schedule_of_Deposits_1

Deposits - Schedule of Deposits by Time Remaining on Maturity (Details) (USD $)	Jun. 30, 2014	Jun. 30, 2013
In Thousands, unless otherwise specified
Deposits [Line Items]	'	'
Certificates of deposit less than $100,000	$32,531	'
Certificates of deposit $100,000 or more	16,369	'
Total certificates of deposit	48,900	56,181
3 Months or Less [Member]	'	'
Deposits [Line Items]	'	'
Certificates of deposit less than $100,000	10,363	'
Certificates of deposit $100,000 or more	5,429	'
Total certificates of deposit	15,792	'
3 to 6 Months [Member]	'	'
Deposits [Line Items]	'	'
Certificates of deposit less than $100,000	7,288	'
Certificates of deposit $100,000 or more	1,831	'
Total certificates of deposit	9,119	'
7 to 12 Months [Member]	'	'
Deposits [Line Items]	'	'
Certificates of deposit less than $100,000	5,908	'
Certificates of deposit $100,000 or more	4,025	'
Total certificates of deposit	9,933	'
Over 12 Months [Member]	'	'
Deposits [Line Items]	'	'
Certificates of deposit less than $100,000	8,972	'
Certificates of deposit $100,000 or more	5,084	'
Total certificates of deposit	$14,056	'

Deposits_Schedule_of_Certifica

Deposits - Schedule of Certificates of Deposits by Year of Maturity (Details) (USD $)	Jun. 30, 2014	Jun. 30, 2013
In Thousands, unless otherwise specified
Deposits [Abstract]	'	'
2015	$34,844	'
2016	6,136	'
2017	3,222	'
2018	553	'
2019	4,145	'
Total certificates of deposit	$48,900	$56,181

Borrowings_Narrative_Details

Borrowings - Narrative (Details) (USD $)	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2014
			Federal Home Loan Bank of New York [Member]	Atlantic Central Bankers' Bank [Member]	Other Financial Institution [Member]	Fixed Rate Term Borrowing [Member]	Maturity Overnight [Member]	Maturity Overnight [Member]	Standby Letters of Credit [Member]
						Federal Home Loan Bank of New York [Member]	Federal Home Loan Bank of New York [Member]	Federal Reserve Bank [Member]	Federal Home Loan Bank of New York [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]	'	'	'	'	'	'	'	'	'
Loans pledged as collateral	'	'	$206,100,000	'	'	'	'	'	'
Maximum amount of funding available	'	'	165,900,000	6,000,000	5,000,000	'	'	'	'
Amount outstanding	'	'	17,650,000	'	'	14,500,000	3,150,000	'	200,000
Weighted average interest rate (in hundredths)	'	'	'	'	'	1.45%	'	'	'
Remaining term	'	'	'	'	'	'48 months	'	'	'
Available-for-sale securities pledged as collateral	$5,200,000	$5,200,000	'	'	'	'	'	$5,200,000	'

Borrowings_Scheduled_Maturitie

Borrowings - Scheduled Maturities of Term Borrowings (Details) (USD $)	Jun. 30, 2014	Jun. 30, 2013
In Thousands, unless otherwise specified
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]	'	'
2015	$3,150	$10,600
Federal Home Loan Bank, Advances, Total	17,650	14,600
Fixed Rate Term Borrowing [Member]	'	'
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]	'	'
2015	0	'
2016	0	'
2017	2,500	'
2018	4,500	'
2019	5,500	'
Due after 2019	2,000	'
Federal Home Loan Bank, Advances, Total	$14,500	'

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive (Loss) Income (Details) (USD $)	Jun. 30, 2014	Jun. 30, 2013
In Thousands, unless otherwise specified
Accumulated Other Comprehensive (Loss) Income [Abstract]	'	'
Unrealized gains on available for sale securities, net of tax	$416	$441
Unrealized loss on securities transferred to held to maturity, net of tax	-231	-15
Net losses and past service liability for defined benefit plan, net of tax	-1,235	-1,176
Accumulated other comprehensive loss	($1,050)	($750)

Employee_Benefit_Plans_Change_

Employee Benefit Plans - Change in Benefit Obligation (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Employee Benefit Plans [Abstract]	'	'
Required age to participate in defined Benefit Plan	'21 years	'
Benefit obligation at beginning of period	$4,971	$4,597
Interest cost	223	176
Actuarial loss	297	304
Benefits paid	-180	-106
Benefit obligation at June 30	$5,311	$4,971

Employee_Benefit_Plans_Schedul

Employee Benefit Plans - Schedule of Net Periodic Income (Expense) (Details) (USD $)	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'	'
Interest cost	$223,000	$176,000
Accumulated benefit obligation for the pension plan	5,300	5,000
Defined Benefit Plan [Member]	'	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'	'
Interest cost	223,000	176,000
Expected return on plan assets	-318,000	-201,000
Amortization of net loss	89,000	76,000
Net periodic pension (income) expense	($6,000)	$51,000

Employee_Benefit_Plans_Change_1

Employee Benefit Plans - Change in Fair Value of Plan Assets (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Employee Benefit Plans [Abstract]	'	'
Fair value of plan assets at beginning of period	$4,637	$2,983
Actual return on plan assets	430	260
Employer contributions	0	1,500
Benefits paid	-180	-106
Fair value of plan assets at June 30	4,887	4,637
Underfunded status at June 30 included in other liabilities	$424	$334

Employee_Benefit_Plans_Schedul1

Employee Benefit Plans - Schedule of Amounts Recognized in Other Comprehensive Income (Loss) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014		Jun. 30, 2013
Employee Benefit Plans [Abstract]	'		'
Actuarial loss on plan assets and benefit obligations	$96		$169
Deferred tax benefit	37		65
Net change in plan assets and benefit obligations recognized in other comprehensive income	$59	[1]	$104	[1]
[1]	These accumulated other comprehensive income components are included in the computation of net periodic benefit cost and are included in salaries and employee benefit expense within noninterest expense (see Note 9 for additional details).

Employee_Benefit_Plans_Schedul2

Employee Benefit Plans - Schedule of Amounts Recognized in Financial Condition (Details) (USD $)	Jun. 30, 2014	Jun. 30, 2013
In Thousands, unless otherwise specified
Other Liabilities [Abstract]	'	'
Projected benefit obligation in excess of fair value of pension plan	$424	$334
Accumulated other comprehensive income, net of taxes [Abstract]	'	'
Net losses and past service liability	($1,235)	($1,176)

Employee_Benefit_Plans_Schedul3

Employee Benefit Plans - Schedule of Assumptions Used (Details)	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Employee Benefit Plans [Abstract]	'	'
Projected benefit obligation: Discount rate (in hundredths)	4.22%	4.57%
Net periodic pension income: Amortization period, in years	'15 years	'16 years
Net periodic pension income: Discount rate (in hundredths)	4.57%	3.93%
Net periodic pension income: Expected long-term rate of return on plan assets (in hundredths)	7.00%	7.00%
Compensation rate for frozen plan (in hundredths)	0.00%	'

Employee_Benefit_Plans_Schedul4

Employee Benefit Plans - Schedule of Allocation of Plan Assets (Details) (USD $)	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014
In Thousands, unless otherwise specified				Money Market Funds [Member]	Money Market Funds [Member]	Large Cap Value Funds [Member]	Mutual Funds [Member]	Mutual Funds [Member]	Short-term and intermediate-term securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'	'	'	'	'	'	'	'	'
Total plan assets	$4,887	$4,637	$2,983	$15	$15	'	$4,872	$4,622	'
Weighted-average plan asset allocation (in hundredths)	100.00%	100.00%	'	0.30%	0.30%	'	99.70%	99.70%	'
Target allocation for investment in mutual funds (in hundredths)	'	'	'	'	'	20.00%	'	'	80.00%
Maximum allowable variation (in hundredths)	'	'	'	'	'	'	5.00%	'	'

Employee_Benefit_Plans_Schedul5

Employee Benefit Plans - Schedule of Expected Benefit Payments (Details) (USD $)	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]	'	'
2015	$189,000	'
2016	188,000	'
2017	220,000	'
2018	219,000	'
2019	234,000	'
2020-2014	1,233,000	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'	'
Required service period to participate in Defined contribution Plan	'3 months	'
Maximum contribution allowed by employees on pre-tax basis (in hundredths)	50.00%	'
Equal matching of employer contribution dollar for dollar (in hundredths)	3.00%	'
Percentage of employer contribution for next 3% (in hundredths)	50.00%	'
Company contributions associated with the contribution plan	215,000	210,000
Payment authorized for purchase of additional shares for ESOP	84,000	84,000
ESOP Expense	84,000	84,000
Employee Stock Option [Member]	'	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'	'
Award vesting period	'3 years	'
Supplemental Executive Retirement Plan [Member]	'	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'	'
Maximum annual contribution per employee	'up to 50% of his or her base salary and 100% of his or her annual bonus	'
Company contributions associated with the contribution plan	167,000	98,000
Vesting period	'10 years	'
Period in which lump sum benefit will be paid in the event of death, disability or termination	'2 years	'
Number of Annual installments, benefit will be paid	10	'
Postemployment benefits liability	$899,000	$595,200

StockBased_Compensation_Narrat

Stock-Based Compensation - Narrative (Details) (USD $)	12 Months Ended		0 Months Ended	12 Months Ended			12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Aug. 19, 2008	Jun. 30, 2013	Jun. 30, 2014	Jul. 29, 2008	Jun. 30, 2014	Jun. 30, 2013	Sep. 30, 2014
			2008 Stock Option Plan [Member]	2008 Stock Option Plan [Member]	2008 Stock Option Plan [Member]	2008 Stock Option Plan [Member]	2011 Phantom Stock Option and Long-term Incentive Plan [Member]	2011 Phantom Stock Option and Long-term Incentive Plan [Member]	2011 Phantom Stock Option and Long-term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)	'	'	'	'	'	180,000	900,000	'	'
Share-based compensation arrangement strike price of phantom stock options as percent of book value (in hundredths)	'	'	'	'	'	'	100.00%	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Exercise Price (in dollars per share)	$12.50	'	$12.50	'	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term	'	'	'10 years	'	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	'	'	'3 years	'	'	'	'	'	'
Allocated Share-based Compensation Expense	'	'	'	$19,000	'	'	$786,800	$147,300	'
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	'	'	'	6,000	'	'	'	'	'
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	'	'	'	0	0	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value	378,000	126,000	'	'	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)	0	0	164,500	'	'	'	236,308	243,473	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period (in shares)	'	'	'	'	'	'	6,840	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number (in shares)	'	'	'	'	'	'	26,506	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number (in shares)	'	'	'	'	'	'	216,540	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value	'	'	'	'	'	'	'	'	714,500
Total liability for the long-term incentive plan	'	'	'	'	'	'	$1,200,000	$396,000	'

Stockbased_Compensation_Summar

Stock-based Compensation - Summary of Stock Option Activity (Details) (USD $)	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Stock-Based Compensation [Abstract]	'	'
Outstanding at beginning of year (in shares)	87,400	103,700
Exercised (in shares)	-27,965	-16,300
Outstanding at end of year (in shares)	59,435	87,400
Exercisable at end of year (in shares)	59,435	87,400
Outstanding at beginning of year, Weighted Average Exercise Price Per Share (in dollars per share)	$12.50	$12.50
Exercised, Weighted Average Exercise Price Per Share (in dollars per share)	$12.50	$12.50
Outstanding at end of year, Weighted Average Exercise Price Per Share (in dollars per share)	$12.50	$12.50
Exercisable at end of year, Weighted Average Exercise Price Per Share (in dollars per share)	$12.50	$12.50

Stockbased_Compensation_Option

Stock-based Compensation - Options Outstanding and Exercisable (Details) (USD $)	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Stock-Based Compensation [Abstract]	'	'	'
Exercise Prices (in dollars per share)	$12.50	'	'
Number Outstanding (in shares)	59,435	87,400	103,700
Weighted Average Remaining Contractual Life	'4 years 3 months	'	'
Weighted Average Exercise Price (in dollars per share)	$12.50	$12.50	$12.50

Earnings_Per_Share_Schedule_of

Earnings Per Share - Schedule of Earnings Per Share Reconciliation (Details) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Earnings Per Share [Abstract]	'	'
Net Income	$6,528	$6,371
Weighted Average Number of Shares Outstanding, Basic (in shares)	4,205,945	4,187,340
Weighted Average Number of Shares Outstanding Effect of dilutive stock options (in shares)	35,311	36,159
Weighted Average Number of Shares Outstanding, Diluted (in shares)	4,241,256	4,223,499
Earnings per share, Basic (in dollars per share)	$1.55	$1.52
Earnings Per Share, Effect of Dilutive Stock Options (in dollars per share)	($0.01)	($0.01)
Earnings Per Share, Diluted (in dollars per share)	$1.54	$1.51

Income_Taxes_Narrative_Details

Income Taxes - Narrative (Details) (USD $)	Jun. 30, 2014	Jun. 30, 2013
Income Taxes [Abstract]	'	'
Liability for Uncertain Tax Positions, Current	$0	$0

Income_Taxes_Provision_for_Inc

Income Taxes - Provision for Income Taxes (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Income Taxes [Abstract]	'	'
Current: Federal	$2,246	$2,070
Current: State	273	278
Total current expense	2,519	2,348
Deferred expense	18	324
Total provision for income taxes	$2,537	$2,672

Income_Taxes_Effective_Tax_Rat

Income Taxes - Effective Tax Rate Reconciliation (Details)	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Income Taxes [Abstract]	'	'
Tax based on federal statutory rate (in hundredth)	34.00%	34.00%
State income taxes, net of federal benefit (in hundredth)	1.02%	1.04%
Tax-exempt income (in hundredth)	-7.97%	-6.65%
Other, net (in hundredth)	0.94%	1.16%
Total income tax expense (in hundredth)	27.99%	29.55%

Income_Taxes_Deferred_Tax_Asse

Income Taxes - Deferred Tax Assets and Liabilities (Details) (USD $)	Jun. 30, 2014	Jun. 30, 2013
In Thousands, unless otherwise specified
Income Taxes [Abstract]	'	'
Deferred tax assets: Allowance for loan losses	$2,870	$2,724
Deferred tax assets: Pension benefits	164	129
Deferred tax assets: Other	653	553
Total deferred tax assets	3,687	3,406
Deferred tax liabilities: Depreciation	1,405	1,470
Deferred tax liabilities: Loan costs	634	514
Deferred tax liabilities: Real estate investment trust income	1,614	1,406
Deferred tax liabilities: Unrealized gains on securities	116	269
Total deferred tax liabilities	3,769	3,659
Net deferred tax liability included in other liabilities	($82)	($253)

Commitments_and_Contingent_Lia2

Commitments and Contingent Liabilities - Unfunded Loan Commitments (Details) (USD $)	Jun. 30, 2014	Jun. 30, 2013
In Thousands, unless otherwise specified
Commitments [Line Items]	'	'
Outstanding Commitments to Originate Loans	$37,785	$33,332
Nonresidential mortgage [Member]	'	'
Commitments [Line Items]	'	'
Outstanding Commitments to Originate Loans	8,757	5,396
Residential mortgage [Member]	'	'
Commitments [Line Items]	'	'
Outstanding Commitments to Originate Loans	2,380	6,171
Commercial construction [Member]	'	'
Commitments [Line Items]	'	'
Outstanding Commitments to Originate Loans	3,138	2,230
Unused portion of overdraft lines of credit [Member]	'	'
Commitments [Line Items]	'	'
Outstanding Commitments to Originate Loans	706	719
Unused portion of home equity lines of credit [Member]	'	'
Commitments [Line Items]	'	'
Outstanding Commitments to Originate Loans	8,159	7,703
Unused portion of commercial lines of credit [Member]	'	'
Commitments [Line Items]	'	'
Outstanding Commitments to Originate Loans	14,419	10,815
Commercial loan commitments [Member]	'	'
Commitments [Line Items]	'	'
Outstanding Commitments to Originate Loans	$226	$298

Operating_Leases_Narrative_Det

Operating Leases - Narrative (Details) (USD $)	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Operating Leases [Abstract]	'	'
Lease Expense	$69,000	$69,000

Operating_Leases_Schedule_of_N

Operating Leases - Schedule of Non-Cancelable Lease Commitments (Details) (USD $)	Jun. 30, 2014
In Thousands, unless otherwise specified
Operating Leases [Abstract]	'
2015	$70
2016	64
2017	26
Thereafter	0
Total payments	$160

Fair_Value_Measurements_and_Fa2

Fair Value Measurements and Fair Value of Financial Instruments - Narrative (Details) (USD $)	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
	Portfolio	Portfolio
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans Receivable, Fair Value Disclosure	406,718,000	367,377,000
Significant Unobservable Inputs (Level 3) [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans Receivable, Fair Value Disclosure	406,718,000	367,377,000
Fair Value, Measurements, Nonrecurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Loans Receivable, Fair Value Disclosure	4,200,000	6,600,000
Allowance for loan losses	721,000	1,200,000
Residential mortgage portfolio [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Number of Loans in Portfolio	14	13
Nonresidential mortgage [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Number of Loans in Portfolio	6	6
Multi-family [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Number of Loans in Portfolio	1	2
Home Equity [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Number of Loans in Portfolio	2	'
Residential Properties [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Number of Loans in Portfolio	'	4
Commercial construction [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Number of Loans in Portfolio	'	2
Commercial loans [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair Value, Number of Loans in Portfolio	2	2

Fair_Value_Measurements_and_Fa3

Fair Value Measurements and Fair Value of Financial Instruments - Fair Value, Assets Measured on Recurring Basis (Details) (USD $)	Jun. 30, 2014	Jun. 30, 2013
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale, at fair value	$56,151	$69,644
Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale, at fair value	5,343	5,345
Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale, at fair value	50,808	64,299
Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale, at fair value	0	0
U.S. Government sponsored enterprises [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale, at fair value	10,898	12,989
U.S. Government sponsored enterprises [Member] | Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale, at fair value	0	0
U.S. Government sponsored enterprises [Member] | Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale, at fair value	10,898	12,989
U.S. Government sponsored enterprises [Member] | Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale, at fair value	0	0
State and political subdivisions [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale, at fair value	1,347	1,858
State and political subdivisions [Member] | Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale, at fair value	0	0
State and political subdivisions [Member] | Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale, at fair value	1,347	1,858
State and political subdivisions [Member] | Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale, at fair value	0	0
Mortgage-backed securities-residential [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale, at fair value	9,545	7,533
Mortgage-backed securities-residential [Member] | Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale, at fair value	0	0
Mortgage-backed securities-residential [Member] | Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale, at fair value	9,545	7,533
Mortgage-backed securities-residential [Member] | Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale, at fair value	0	0
Mortgage-backed securities-multi-family [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale, at fair value	29,018	41,919
Mortgage-backed securities-multi-family [Member] | Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale, at fair value	0	0
Mortgage-backed securities-multi-family [Member] | Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale, at fair value	29,018	41,919
Mortgage-backed securities-multi-family [Member] | Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale, at fair value	0	0
Asset-backed securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale, at fair value	13	16
Asset-backed securities [Member] | Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale, at fair value	13	16
Asset-backed securities [Member] | Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale, at fair value	0	0
Asset-backed securities [Member] | Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale, at fair value	0	0
Corporate debt securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale, at fair value	5,170	5,176
Corporate debt securities [Member] | Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale, at fair value	5,170	5,176
Corporate debt securities [Member] | Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale, at fair value	0	0
Corporate debt securities [Member] | Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale, at fair value	0	0
Equity securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale, at fair value	160	153
Equity securities [Member] | Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale, at fair value	160	153
Equity securities [Member] | Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale, at fair value	0	0
Equity securities [Member] | Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Securities available for sale, at fair value	$0	$0

Fair_Value_Measurements_and_Fa4

Fair Value Measurements and Fair Value of Financial Instruments - Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques (Details) (USD $)	Jun. 30, 2014	Jun. 30, 2013
In Thousands, unless otherwise specified
Impaired loans [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value	$3,527	$5,460
Foreclosed real estate [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value	382	'
Level 1 [Member] | Impaired loans [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value	0	0
Level 2 [Member] | Impaired loans [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value	0	0
Level 3 [Member] | Impaired loans [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value	3,527	5,460
Level 3 [Member] | Foreclosed real estate [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value	$382	'

Fair_Value_Measurements_and_Fa5

Fair Value Measurements and Fair Value of Financial Instruments - Fair Value Inputs, Assets, Quantitative Information (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014		Jun. 30, 2013
Impaired loans [Member]	'		'
Fair value inputs assets, quantitative information [Line Items]	'		'
Fair value	3,527		5,460
Impaired loans [Member] | Nonrecurring [Member] | Appraisal of Collateral [Member]	'		'
Fair value inputs assets, quantitative information [Line Items]	'		'
Fair value	3,527	[1]	5,460	[1]
Impaired loans [Member] | Nonrecurring [Member] | Appraisal of Collateral [Member] | Minimum [Member]	'		'
Fair value inputs [Abstract]	'		'
Appraisal adjustments (in hundredths)	0.00%	[1],[2]	4.00%	[1],[2]
Liquidation expenses (in hundredths)	0.00%	[1],[3]	3.49%	[1],[3]
Impaired loans [Member] | Nonrecurring [Member] | Appraisal of Collateral [Member] | Maximum [Member]	'		'
Fair value inputs [Abstract]	'		'
Appraisal adjustments (in hundredths)	38.85%	[1],[2]	41.74%	[1],[2]
Liquidation expenses (in hundredths)	9.22%	[1],[3]	9.52%	[1],[3]
Impaired loans [Member] | Nonrecurring [Member] | Appraisal of Collateral [Member] | Weighted Average [Member]	'		'
Fair value inputs [Abstract]	'		'
Appraisal adjustments (in hundredths)	15.26%	[1],[2]	23.98%	[1],[2]
Liquidation expenses (in hundredths)	3.82%	[1],[3]	5.86%	[1],[3]
Foreclosed real estate [Member]	'		'
Fair value inputs assets, quantitative information [Line Items]	'		'
Fair value	382		'
Foreclosed real estate [Member] | Nonrecurring [Member] | Appraisal of Collateral [Member]	'		'
Fair value inputs assets, quantitative information [Line Items]	'		'
Fair value	382	[1]	'
Foreclosed real estate [Member] | Nonrecurring [Member] | Appraisal of Collateral [Member] | Minimum [Member]	'		'
Fair value inputs [Abstract]	'		'
Appraisal adjustments (in hundredths)	9.30%	[1],[2]	'
Liquidation expenses (in hundredths)	6.00%	[1],[3]	'
Foreclosed real estate [Member] | Nonrecurring [Member] | Appraisal of Collateral [Member] | Maximum [Member]	'		'
Fair value inputs [Abstract]	'		'
Appraisal adjustments (in hundredths)	19.00%	[1],[2]	'
Liquidation expenses (in hundredths)	10.86%	[1],[3]	'
Foreclosed real estate [Member] | Nonrecurring [Member] | Appraisal of Collateral [Member] | Weighted Average [Member]	'		'
Fair value inputs [Abstract]	'		'
Appraisal adjustments (in hundredths)	12.18%	[1],[2]	'
Liquidation expenses (in hundredths)	7.95%	[1],[3]	'
[1]	Fair value is generally determined through independent third-party appraisals of the underlying collateral, which generally includes various Level 3 inputs which are not observable.
[2]	Appraisals may be adjusted downwards by management for qualitative factors such as economic conditions. Higher downward adjustments are caused by negative changes to the collateral or conditions in the real estate market, actual offers or sales contracts received or age of the appraisal.
[3]	Appraisals may be adjusted downwards by management for qualitative factors such as the estimated costs to liquidate the collateral.

Fair_Value_Measurements_and_Fa6

Fair Value Measurements and Fair Value of Financial Instruments - Carrying Amount and Estimated Fair Value (Details) (USD $)	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Cash and cash equivalents, Carrying Amount	$13,809	$6,222	$7,742
Long term certificate of deposit, Carrying Amount	250	250	'
Securities available for sale, Carrying Amount	56,151	69,644	'
Securities held to maturity, at amortized cost (fair value $181,932 at June 30, 2014; $177,660 at June 30, 2013)	181,946	176,519	'
Federal Home Loan Bank stock, Carrying Amount	1,561	1,388	'
Net loans, Carrying Amount	399,309	359,426	'
Accrued interest receivable, Carrying Amount	2,710	2,663	'
Deposits, Carrying Amount	589,574	558,439	'
Federal Home Loan Bank borrowings, Carrying Amount	17,650	14,600	'
Accrued Interest Payable, Carrying Amount	66	55	'
Cash and cash equivalents	13,809	6,222	'
Long term certificate of deposit	250	250	'
Securities available for sale, at fair value	56,151	69,644	'
Securities held to maturity, fair value	181,932	177,660	'
Federal Home Loan Bank stock	1,561	1,388	'
Net loans	406,718	367,377	'
Accrued interest receivable	2,710	2,663	'
Deposits	589,681	558,517	'
Federal Home Loan Bank borrowings	17,465	14,378	'
Accrued interest payable	66	55	'
Level 1 [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Securities available for sale, Carrying Amount	5,343	5,345	'
Cash and cash equivalents	13,809	6,222	'
Long term certificate of deposit	250	250	'
Securities available for sale, at fair value	5,343	5,345	'
Securities held to maturity, fair value	0	0	'
Federal Home Loan Bank stock	0	0	'
Net loans	0	0	'
Accrued interest receivable	0	0	'
Deposits	0	0	'
Federal Home Loan Bank borrowings	0	0	'
Accrued interest payable	0	0	'
Level 2 [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Securities available for sale, Carrying Amount	50,808	64,299	'
Cash and cash equivalents	0	0	'
Long term certificate of deposit	0	0	'
Securities available for sale, at fair value	50,808	64,299	'
Securities held to maturity, fair value	181,932	177,660	'
Federal Home Loan Bank stock	1,561	1,388	'
Net loans	0	0	'
Accrued interest receivable	2,710	2,663	'
Deposits	589,681	558,517	'
Federal Home Loan Bank borrowings	17,465	14,378	'
Accrued interest payable	66	55	'
Level 3 [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Securities available for sale, Carrying Amount	0	0	'
Cash and cash equivalents	0	0	'
Long term certificate of deposit	0	0	'
Securities available for sale, at fair value	0	0	'
Securities held to maturity, fair value	0	0	'
Federal Home Loan Bank stock	0	0	'
Net loans	406,718	367,377	'
Accrued interest receivable	0	0	'
Deposits	0	0	'
Federal Home Loan Bank borrowings	0	0	'
Accrued interest payable	$0	$0	'

Regulatory_Matters_Schedule_of

Regulatory Matters - Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations (Details) (USD $)	Jun. 30, 2014	Jun. 30, 2013
In Thousands, unless otherwise specified
The Bank of Greene County [Member]	'	'
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]	'	'
Total capital (to risk weighted assets), Amount	$63,918	$58,892
Total capital (to risk weighted assets) For Capital Adequacy Purposes, Amount	27,600	25,424
Total capital (to risk weighted assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	34,499	31,780
Total capital (to risk weighted assets), Ratio (in hundredths)	18.50%	18.50%
Total capital (to risk weighted assets) For Capital Adequacy Purposes, Ratio (in hundredths)	8.00%	8.00%
Total capital (to risk weighted assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio (in hundredths)	10.00%	10.00%
Tier 1 capital (to risk weighted assets), Amount	59,523	54,843
Tier 1 capital (to risk weighted assets) For Capital Adequacy Purposes, Amount	13,800	12,712
Tier 1 capital (to risk weighted assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	20,700	19,068
Tier 1 capital (to risk weighted assets), Ratio (in hundredths)	17.30%	17.30%
Tier 1 capital (to risk weighted assets) For Capital Adequacy Purposes, Ratio (in hundredths)	4.00%	4.00%
Tier 1 capital (to risk weighted assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio (in hundredths)	6.00%	6.00%
Tier 1 capital (to average assets), Amount	59,523	54,843
Tier 1 capital (to average assets) For Capital Adequacy Purposes, Amount	20,257	19,050
Tier 1 capital (to average assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	33,761	31,751
Tier 1 capital (to average assets), Ratio (in hundredths)	8.80%	8.60%
Tier 1 capital (to average assets) For Capital Adequacy Purposes, Ratio (in hundredths)	3.00%	3.00%
Tier 1 capital (to average assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio (in hundredths)	5.00%	5.00%
Greene County Commercial Bank [Member]	'	'
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]	'	'
Total capital (to risk weighted assets), Amount	17,211	15,256
Total capital (to risk weighted assets) For Capital Adequacy Purposes, Amount	3,388	3,091
Total capital (to risk weighted assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	4,236	3,864
Total capital (to risk weighted assets), Ratio (in hundredths)	40.60%	39.50%
Total capital (to risk weighted assets) For Capital Adequacy Purposes, Ratio (in hundredths)	8.00%	8.00%
Total capital (to risk weighted assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio (in hundredths)	10.00%	10.00%
Tier 1 capital (to risk weighted assets), Amount	17,211	15,256
Tier 1 capital (to risk weighted assets) For Capital Adequacy Purposes, Amount	1,694	1,546
Tier 1 capital (to risk weighted assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	2,541	2,318
Tier 1 capital (to risk weighted assets), Ratio (in hundredths)	40.60%	39.50%
Tier 1 capital (to risk weighted assets) For Capital Adequacy Purposes, Ratio (in hundredths)	4.00%	4.00%
Tier 1 capital (to risk weighted assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio (in hundredths)	6.00%	6.00%
Tier 1 capital (to average assets), Amount	17,211	15,256
Tier 1 capital (to average assets) For Capital Adequacy Purposes, Amount	8,369	7,912
Tier 1 capital (to average assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$10,461	$9,890
Tier 1 capital (to average assets), Ratio (in hundredths)	8.20%	7.70%
Tier 1 capital (to average assets) For Capital Adequacy Purposes, Ratio (in hundredths)	4.00%	4.00%
Tier 1 capital (to average assets) To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio (in hundredths)	5.00%	5.00%

Condensed_Financial_Statements2

Condensed Financial Statements of Greene County Bancorp, Inc. - Condensed Statements of Financial Condition (Details) (USD $)	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
In Thousands, unless otherwise specified
ASSETS	'	'	'
Total assets	$674,161	$633,605	'
LIABILITIES AND SHAREHOLDERS' EQUITY [Abstract]	'	'	'
Total liabilities	612,961	577,497	'
Total shareholders' equity	61,200	56,108	52,664
Total liabilities and shareholders' equity	674,161	633,605	'
Parent Company [Member]	'	'	'
ASSETS	'	'	'
Cash and cash equivalents	2,817	2,114	4,247
Investment in subsidiaries	58,419	54,038	'
Prepaid expenses and other assets	16	16	'
Total assets	61,252	56,168	'
LIABILITIES AND SHAREHOLDERS' EQUITY [Abstract]	'	'	'
Total liabilities	52	60	'
Total shareholders' equity	61,200	56,108	'
Total liabilities and shareholders' equity	$61,252	$56,168	'

Condensed_Financial_Statements3

Condensed Financial Statements of Greene County Bancorp, Inc. - Condensed Statements of Income (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
OPERATING EXPENSES [Abstract]	'	'
Other	$1,754	$1,692
Net income	6,528	6,371
Parent Company [Member]	'	'
INCOME [Abstract]	'	'
Equity in undistributed net income of subsidiaries	4,682	6,501
Dividend from subsidiary	2,004	4
Interest earning deposits	7	12
Total income	6,693	6,517
OPERATING EXPENSES [Abstract]	'	'
Legal Fees	62	46
Other	103	100
Total operating expenses	165	146
Net income	$6,528	$6,371

Condensed_Financial_Statements4

Condensed Financial Statements of Greene County Bancorp, Inc. - Condensed Statements of Comprehensive Income (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014		Jun. 30, 2013
Condensed Financial Statements, Captions [Line Items]	'		'
Net Income	$6,528		$6,371
Other comprehensive (loss) income [Abstract]	'		'
Unrealized holding (losses) gains on available for sale securities, net of income taxes of ($327) and ($526), respectively	-518		-833
Reclassification adjustment for gain on sale of securities realized in net income net of income taxes of $- and ($4) respectively	0	[1]	-6	[1]
Accretion of unrealized loss on securities transferred to held to maturity,net of income taxes of $175 and $13, respectively	277	[2]	20	[2]
Pension actuarial loss, net of income taxes of ($37) and ($65)	-59	[3]	-104	[3]
Total other comprehensive loss, net of taxes	-300		-923
Comprehensive income	6,228		5,448
Income taxes, unrealized holding gain (losses) on available for sale securities	-327		-526
Income taxes, reclassification adjustment for gain on securities realized in net income	0		-4
Income taxes, accretion of unrealized loss on securities transferred to held-to-maturity	175		13
Income taxes, pension actuarial gain	-37		-65
Parent Company [Member]	'		'
Condensed Financial Statements, Captions [Line Items]	'		'
Net Income	6,528		6,371
Other comprehensive (loss) income [Abstract]	'		'
Unrealized holding (losses) gains on available for sale securities, net of income taxes of ($327) and ($526), respectively	-518		-833
Reclassification adjustment for gain on sale of securities realized in net income net of income taxes of $- and ($4) respectively	0	[1]	-6	[1]
Accretion of unrealized loss on securities transferred to held to maturity,net of income taxes of $175 and $13, respectively	277	[4]	20	[4]
Pension actuarial loss, net of income taxes of ($37) and ($65)	-59	[3]	-104	[3]
Total other comprehensive loss, net of taxes	-300		-923
Comprehensive income	6,228		5,448
Income taxes, unrealized holding gain (losses) on available for sale securities	-327		-526
Income taxes, reclassification adjustment for gain on securities realized in net income	0		-4
Income taxes, accretion of unrealized loss on securities transferred to held-to-maturity	175		13
Income taxes, pension actuarial gain	($37)		($65)
[1]	Amounts are included in net gain on sale of available for sale securities on the Consolidated Statements of Income in total non-interest income.
[2]	The accretion of the unrealized holding losses in accumulated other comprehensive income (loss) at the date of transfer partially offsets the amortization of the difference between the par value and fair value of the investment securities at the date of transfer, and is an adjustment of interest income.
[3]	These accumulated other comprehensive income components are included in the computation of net periodic benefit cost and are included in salaries and employee benefit expense within noninterest expense (see Note 9 for additional details).
[4]	The accretion of the unrealized holding losses in accumulated other comprehensive income at the date of transfer partially offsets the amortization of the difference between the par value and fair value of the investment securities at the date of transfer, and is an adjustment of interest income.

Condensed_Financial_Statements5

Condensed Financial Statements of Greene County Bancorp, Inc. - Condensed Statements of Cash Flows (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities:	'	'
Net Income	$6,528	$6,371
Adjustments to reconcile net income to cash provided by (used by) operating activities:	'	'
Tax benefit of stock based compensation	-27	0
Net increase in prepaid expenses and other assets	88	-1,096
Net cash provided by operating activities	11,385	10,335
Cash flows from financing activities	'	'
Payment of cash dividends	-1,335	-2,128
Excess tax benefit from share-based payment arrangements	27	0
Net cash provided by financing activities	33,049	38,098
Net increase (decrease) in cash and cash equivalents	7,587	-1,520
Parent Company [Member]	'	'
Cash flows from operating activities:	'	'
Net Income	6,528	6,371
Adjustments to reconcile net income to cash provided by (used by) operating activities:	'	'
Undistributed earnings of subsidiaries	-4,682	-6,501
Tax benefit of stock based compensation	-28	0
Net increase in prepaid expenses and other assets	0	-2
Net increase in total liabilities	20	3
Net cash provided by operating activities	1,838	-129
Cash flows from financing activities	'	'
Payment of cash dividends	-1,335	-2,128
Proceeds from exercise of stock options	172	124
Excess tax benefit from share-based payment arrangements	28	0
Net cash provided by financing activities	-1,135	-2,004
Net increase (decrease) in cash and cash equivalents	703	-2,133
Cash and cash equivalents at beginning of period	2,114	4,247
Cash and cash equivalents at end of period	$2,817	$2,114

Subsequent_events_Narrative_De

Subsequent events - Narrative (Details) (USD $)	12 Months Ended		0 Months Ended	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jul. 15, 2014	Jun. 30, 2014
			Subsequent Event [Member]	Subsequent Event [Member]
Subsequent Event [Line Items]	'	'	'	'
Dividends payable, date declared	'	'	'	15-Jul-14
Common stock, dividends declared (in dollars per share)	$0.70	$0.70	$0.18	$0.70
Annual dividend rate per share (in dollars per share)	'	'	$0.72	'
Dividends payable, date of record	'	'	'	15-Aug-14
Dividends payable, date to be paid	'	'	'	29-Aug-14