Westbury Bancorp (WBBW) 10-Q 31 Jul 15 2015 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Jun. 30, 2015	Jul. 30, 2015
Document and Entity Information
Entity Registrant Name	Westbury Bancorp, Inc.
Entity Central Index Key	1,553,326
Document Type	10-Q
Document Period End Date	Jun. 30, 2015
Amendment Flag	false
Current Fiscal Year End Date	--09-30
Entity Current Reporting Status	Yes
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		4,411,480
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q3

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2015	Sep. 30, 2014
Assets
Cash and due from banks	$ 10,404	$ 9,369
Interest-earning deposits	5,560	8,239
Cash and cash equivalents	15,964	17,608
Securities available-for-sale	79,450	90,346
Securities held to maturity, at amortized cost ($2,479 fair value at June 30, 2015)	2,459	0
Loans held for sale, at lower of cost or fair value	1,504	326
Loans, net of allowance for loan losses of $4,536 and $4,072 at June 30 and September 30, respectively	486,497	416,874
Federal Home Loan Bank stock, at cost	3,350	2,670
Foreclosed real estate	1,411	2,355
Real estate held for investment	3,683	3,763
Office properties and equipment, net	11,374	11,181
Cash surrender value of bank-owned life insurance	13,069	12,742
Mortgage servicing rights	1,359	1,624
Deferred tax asset	5,290	5,702
Other assets	3,970	3,504
Total assets	629,380	568,695
Liabilities
Deposits	522,031	454,928
Advances from Federal Home Loan Bank	22,000	17,000
Advance payments by borrowers for property taxes and insurance	3,734	5,869
Other liabilities	4,614	4,411
Total liabilities	552,379	482,208
Stockholders’ Equity
Preferred stock $0.01 par value, 50,000,000 shares authorized; none issued or outstanding	0	0
Common stock $0.01 par value, 100,000,000 shares authorized; 5,346,206 shares issued at June 30, 2015 and September 30, 2014	53	53
Additional paid-in capital	49,899	49,164
Retained earnings	46,231	45,190
Unearned Employee Stock Ownership Plan (ESOP) shares	(3,599)	(3,754)
Accumulated other comprehensive loss	(84)	(46)
Less common stock repurchased, 933,026 shares at cost, at June 30, 2015 and 271,296 at September 30, 2014	(15,499)	(4,120)
Total stockholders’ equity	77,001	86,487
Total liabilities and stockholders’ equity	$ 629,380	$ 568,695

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2015	Sep. 30, 2014
Statement of Financial Position [Abstract]
Securities held to maturity, fair value	$ 2,479
Allowance for loan losses	$ 4,536	$ 4,072
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	50,000,000	50,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	5,346,206	5,346,206
Treasury stock, shares	933,026	271,296

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Interest and dividend income:
Loans	$ 4,855	$ 3,988	$ 13,999	$ 11,915
Investments - nontaxable	15	21	47	59
Investments - taxable	398	463	1,194	1,430
Interest bearing deposits	17	30	45	96
Total interest and dividend income	5,285	4,502	15,285	13,500
Interest expense:
Deposits	509	393	1,380	1,215
Advances from the Federal Home Loan Bank	9	1	27	2
Total interest expense	518	394	1,407	1,217
Net interest income before provision for loan losses	4,767	4,108	13,878	12,283
Provision for loan losses	150	0	800	350
Net interest income after provision for loan losses	4,617	4,108	13,078	11,933
Noninterest income:
Service fees on deposit accounts	1,081	1,069	3,236	3,100
Gain on sales of loans, net	79	103	322	167
Servicing fee income, net of amortization and impairment	69	34	112	352
Insurance and securities sales commissions	78	65	234	259
Gain on sales of securities	17	18	90	42
Gain (loss) on sales of branches and other assets	1	(2)	7	(70)
Increase in cash surrender value of life insurance	97	99	327	287
Rental income from real estate operations	146	154	422	471
Other income	38	(28)	141	89
Total noninterest income	1,606	1,512	4,891	4,697
Noninterest expenses:
Salaries and employee benefits	2,427	2,187	7,247	6,913
Commissions	49	71	175	170
Occupancy	326	400	1,024	1,324
Furniture and equipment	124	109	352	368
Data processing	831	820	2,404	2,534
Advertising	45	82	149	174
Real estate held for investment	103	111	326	422
Profit (Loss) from Operations and Sale of Foreclosed Real Estate	(316)	(131)	(495)	(581)
FDIC insurance premiums	104	167	316	509
Valuation loss on real estate held for sale	0	252	0	2,216
Branch realignment	250	46	250	619
Buyout of service contract	350	0	350	0
Other expenses	1,140	1,211	3,304	3,715
Total noninterest expenses	6,065	5,587	16,392	19,545
Income (loss) before income tax expense (benefit)	158	33	1,577	(2,915)
Income tax expense (benefit)	48	(36)	536	(1,253)
Net income (loss)	$ 110	$ 69	$ 1,041	$ (1,662)
Earnings per share:
Basic (in dollars per share)	$ 0.03	$ 0.01	$ 0.25	$ (0.35)
Diluted (in dollars per share)	$ 0.03	$ 0.01	$ 0.25	$ (0.35)

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 110	$ 69	$ 1,041	$ (1,662)
Other comprehensive income, before tax:
Unrealized gains (losses) on available-for-sale securities	(846)	884	29	1,496
Reclassification adjustment for realized gains included in net income	(17)	(18)	(90)	(42)
Other comprehensive income (loss), before tax	(863)	866	(61)	1,454
Income tax expense (benefit) related to items of other comprehensive income	338	(340)	23	(558)
Other comprehensive income (loss), net of tax	(525)	526	(38)	896
Comprehensive income (loss)	$ (415)	$ 595	$ 1,003	$ (766)

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Additional Paid In Capital	Retained Earnings	Unearned ESOP Shares	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Balance at Sep. 30, 2013	$ 90,602	$ 0	$ 51	$ 48,800	$ 46,625	$ (4,114)	$ (760)
Increase (Decrease) in Stockholders' Equity
Net income (loss)	(1,662)	0			(1,662)
Other comprehensive income (loss), net of tax	896						896
Stock Issued During Period, Value, Restricted Stock Award, Gross	0		2	(2)
Repurchase of 661,730 shares of common stock	1,587							$ 1,587
Stock based compensation expense	13			13
Allocation of 5,143 shares by ESOP	287			81		206
Commitment to be allocated of 10,285 ESOP shares	146			44		102
Balance at Jun. 30, 2014	88,695	0	53	48,936	44,963	(3,806)	136	(1,587)
Balance at Sep. 30, 2014	86,487	0	53	49,164	45,190	(3,754)	(46)	(4,120)
Increase (Decrease) in Stockholders' Equity
Net income (loss)	1,041	0			1,041
Other comprehensive income (loss), net of tax	(38)						(38)
Repurchase of 661,730 shares of common stock	(11,379)							(11,379)
Stock based compensation expense	602			602
Allocation of 5,143 shares by ESOP	112	0		61		51
Commitment to be allocated of 10,285 ESOP shares	176			72		104
Balance at Jun. 30, 2015	$ 77,001	$ 0	$ 53	$ 49,899	$ 46,231	$ (3,599)	$ (84)	$ (15,499)

Consolidated Statements of Cha7

Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - shares	9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Statement of Stockholders' Equity [Abstract]
Number of shares purchased by ESOP	0	0
Number of shares repurchased during period	661,730	105,035
Number of restricted shares issued during period	0	203,665
Number of shares allocated by ESOP	5,142	20,570
Number of shares committed to be allocated by ESOP	10,285	10,285

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash Flows From Operating Activities
Net income (loss)	$ 1,041	$ (1,662)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Provision for loan losses	800	350
Depreciation and amortization	486	552
Depreciation on real estate held for investment	99	122
Net amortization of securities premiums and discounts	379	478
Amortization and impairment of mortgage servicing rights	267	113
Capitalization of mortgage servicing rights	(2)	(1)
Gain on sales of available-for-sale securities	(90)	(42)
(Gain) loss on sales of branches and other assets	(7)	70
Write-down of real estate held-for-sale	0	2,216
Loss on sale of foreclosed real estate	18	150
Write-down of foreclosed real estate	321	260
Loans originated for sale	(20,366)	(9,409)
Proceeds from sale of loans	19,510	10,000
Gain on sale of loans, net	(322)	(167)
ESOP compensation expense	288	242
Stock based compensation expense	602	13
Deferred income taxes	435	(1,227)
Increase in cash surrender value of life insurance	(327)	(287)
Net change in:
Other assets	(459)	288
Other liabilities and advance payments by borrowers for property taxes and insurance	(1,882)	(2,973)
Net cash provided by (used in) operating activities	791	(914)
Cash Flows From Investing Activities
Purchases of securities available-for-sale	(21,395)	(17,699)
Proceeds from sales of securities available-for-sale	23,208	16,133
Proceeds from maturities, prepayments, and calls of securities available-for-sale	8,733	8,085
Purchases of securities held to maturity	(3,025)	0
Proceeds from maturities, prepayments, and calls of securities held to maturity	566	0
Purchases of real estate held for investment	(19)	0
Purchase of FHLB stock	(680)	0
Net increase in loans	(70,938)	(40,988)
Purchases of office properties and equipment	(729)	(1,229)
Proceeds from sales of foreclosed real estate	1,120	899
Net cash used in investing activities	(63,159)	(34,799)
Cash Flows From Financing Activities
Net increase in deposits	67,103	7,999
Increase in Federal Home Loan Bank borrowings	5,000	10,500
Repurchase of common stock	(11,379)	(1,587)
Net cash provided by financing activities	60,724	16,912
Net decrease in cash and cash equivalents	(1,644)	(18,801)
Cash and cash equivalents at beginning	17,608	47,665
Cash and cash equivalents at end	15,964	28,864
Supplemental Disclosures of Cash Flow Information
Interest paid (including amounts credited to deposits)	1,405	1,243
Supplemental Schedules of Non-cash Investing Activities
Loans receivable transferred to foreclosed real estate	515	2,623
Real estate held for investment transferred to real estate held for sale	0	2,255
Office properties and equipment transferred to real estate held for sale	$ 0	$ 2,451

Basis of Presentation

Basis of Presentation	9 Months Ended
	Jun. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited consolidated financial statements of Westbury Bancorp, Inc. and its wholly-owned subsidiary, Westbury Bank, (the "Bank", and collectively, the “Company”) have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Rule 8-03 of Regulation S-X. Accordingly, certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Estimates used in the preparation of the financial statements are based on various factors including the current interest rate environment and the general strength of the local economy. Changes in the overall interest rate environment can significantly affect the Company’s net interest income and the value of its recorded assets and liabilities. Actual results could differ from those estimates used in the preparation of the financial statements. Certain prior period amounts have been reclassified to conform to current period presentation. These reclassifications did not result in any changes to previously reported net income or stockholders’ equity. In the opinion of management, the accompanying unaudited financial statements contain all adjustments (consisting only of normal recurring accruals) necessary to present fairly the Company’s financial condition as of June 30, 2015 and September 30, 2014 and the results of operations and cash flows for the interim periods ended June 30, 2015 and 2014. All interim amounts are unaudited, and the results of operations for the interim periods herein are not necessarily indicative of the results of operations to be expected for the year. These financial statements should be read in conjunction with the Company’s audited financial statements and notes thereto for the year ended September 30, 2014 filed as part of Westbury Bancorp, Inc.’s Annual Report on Form 10-K for the year ended September 30, 2014. The Jumpstart Our Business Startups Act (the JOBS Act), which was signed into law on April 5, 2012, has made numerous changes to the federal securities laws to facilitate access to capital markets. Under the JOBS Act, a company with total annual gross revenues of less than $1.0 billion during its most recently completed fiscal year qualifies as an “emerging growth company.” The Company qualifies as an “emerging growth company” and believes that it will continue to qualify as an “emerging growth company” until five years from the completion of the Company's initial public stock offering in April 2013. As an “emerging growth company,” the Company has elected to use the extended transition period to delay adoption of new or revised accounting pronouncements applicable to public companies until such pronouncements are made applicable to private companies. Accordingly, the financial statements may not be comparable to the financial statements of companies that comply with such new or revised accounting standards.

Recent Accounting Developments

Recent Accounting Developments	9 Months Ended
	Jun. 30, 2015
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recent Accounting Developments	Recent Accounting Developments In January 2014, the FASB issued ASU 2014-04, Receivables (Topic 310) - Troubled Debt Restructurings by Creditors. ASU 2014-04 is intended to reduce diversity by clarifying when an in substance repossession or foreclosure occurs, that is, when a creditor should be considered to have received physical possession of residential real property collateralizing a consumer mortgage loan such that the loan receivable should be derecognized and the real estate property recognized. ASU 2014-04 is effective for annual periods and interim periods within those annual periods beginning after December 15, 2014. Adoption by the Company is not expected to have a material impact on the consolidated financial statements and related disclosures. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606). ASU 2014-09 is intended to clarify the principles for recognizing revenue and to develop a common revenue standard for U.S. GAAP. ASU 2014-09 is effective for annual reporting periods and interim periods within those annual periods beginning after December 15, 2017. Adoption by the Company is not expected to have a material impact on the consolidated financial statements and related disclosures. In June 2014, the FASB issued ASU 2014-11, Transfers and Servicing (Topic 860) - Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures. ASU 2014-11 is intended to clarify the accounting for and improve the disclosures related to repurchase-to-maturity transactions and repurchase financings. ASU 2014-11 is effective for the first interim or annual period beginning after December 15, 2015. Adoption by the Company is not expected to have a material impact on the consolidated financial statements and related disclosures. In June 2014, the FASB issued ASU 2014-12, Compensation - Stock Compensation (Topic 718) - Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved After the Requisite Service Period. ASU 2014-12 is intended to clarify the accounting for the timing of expense recognition related to employee share-based payments in which a performance target that effects vesting could be achieved after the requisite service period. ASU 2014-12 is effective for annual periods and interim periods within those annual periods beginning after December 15, 2015. Adoption by the Company is not expected to have a material impact on the consolidated financial statements and related disclosures. In August 2014, the FASB issued ASU 2014-14, Receivables - Troubled Debt Restructuring by Creditors (Topic 310) - Classification of Certain Government-Guaranteed Mortgage Loans Upon Foreclosure. ASU 2014-14 is intended to clarify the accounting for and improve the consistency of balance sheet classification of certain foreclosed mortgage loans that are either fully or partially guaranteed under government programs. Greater consistency in classification of such mortgage loans upon foreclosure is expected to provide more decision-useful information about a creditor's foreclosed mortgage loans that are expected to be recovered, at least in part, through government guarantees. ASU 2014-14 is effective for annual periods and interim periods within those annual periods beginning after December 15, 2015. Adoption by the Company is not expected to have a material impact on the consolidated financial statements and related disclosures.

Earnings Per Share

Earnings Per Share	9 Months Ended
	Jun. 30, 2015
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share Earnings per common share is computed using the two-class method. Basic earnings per common share is computed by dividing net income by the weighted-average number of common shares outstanding, adjusted for weighted average unallocated ESOP shares, during the applicable period, excluding outstanding participating securities. Participating securities include non-vested restricted stock awards to the extent holders of these securities receive non-forfeitable dividends or dividend equivalents at the same rate as holders of the Company's common stock. Diluted earnings per share is computed using the weighted-average number of shares determined for the basic earnings per common share computation plus the dilutive effect of stock compensation using the treasury stock method. The following table presents a reconciliation of the number of shares used in the calculation of basic and diluted earnings per common share (in thousands, except share and per share data). Three Months Ended June 30, Nine Months Ended June 30, 2015 2014 2015 2014 Net income (loss) $ 110 $ 69 $ 1,041 $ (1,662 ) Basic potential common shares: Weighted average shares outstanding 4,264,273 5,132,913 4,585,717 5,139,332 Weighted average unallocated ESOP shares (363,407 ) (383,120 ) (368,568 ) (388,605 ) Basic weighted average shares outstanding 3,900,866 4,749,793 4,217,149 4,750,727 Dilutive effect of equity awards 9,081 18 — 6 Diluted weighted average shares outstanding 3,909,947 4,749,811 4,217,149 4,750,733 Basic income (loss) per share $ 0.03 $ 0.01 $ 0.25 $ (0.35 ) Diluted income (loss) per share $ 0.03 $ 0.01 $ 0.25 $ (0.35 )

Investment Securitites

Investment Securitites	9 Months Ended
	Jun. 30, 2015
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities The amortized cost and fair value of investment securities are summarized as follows: June 30, 2015 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Available for Sale U.S. Government and agency securities $ 24 $ 1 $ — $ 25 U.S. Government agency residential mortgage-backed securities 40,619 327 (373 ) 40,573 U.S. Government agency collateralized mortgage obligations 2,184 18 (55 ) 2,147 U.S. Government agency commercial mortgage-backed securities 11,737 64 (40 ) 11,761 Municipal securities 25,023 121 (200 ) 24,944 Total Available for Sale 79,587 531 (668 ) 79,450 Held to Maturity Municipal securities 2,459 20 — 2,479 Total Investment Securities $ 82,046 $ 551 $ (668 ) $ 81,929 September 30, 2014 Amortized Gross Gross Fair Available for Sale U.S. Government and agency securities $ 5,250 $ — $ (71 ) $ 5,179 U.S. Government agency residential mortgage-backed securities 37,144 389 (337 ) 37,196 U.S. Government agency collateralized mortgage obligations 3,458 30 (56 ) 3,432 U.S. Government agency commercial mortgage-backed securities 10,835 11 (94 ) 10,752 Municipal securities 33,735 280 (228 ) 33,787 Total Available for Sale 90,422 710 (786 ) 90,346 Held to Maturity Municipal securities — — — — Total Investment Securities $ 90,422 $ 710 $ (786 ) $ 90,346 The amortized cost and fair value of investment securities, by contractual maturity at June 30, 2015 are shown in the following table. Actual maturities differ from contractual maturities for mortgage-backed securities because the mortgages underlying the securities may be called or repaid without penalty. Therefore, these securities are not presented in the maturity categories in the table below. June 30, 2015 Amortized Cost Fair Value Available for sale: Due in one year or less $ 5,620 $ 5,647 Due after one year through five years 8,940 9,001 Due after five years through ten years 8,884 8,778 Due after ten years 1,603 1,543 U.S. Government agency collateralized mortgage obligations 2,184 2,147 U.S. Government agency residential mortgage-backed securities 40,619 40,573 U.S. Government agency commercial mortgage-backed securities 11,737 11,761 79,587 79,450 Held to maturity: Due in one year or less 166 166 Due after one year through five years 690 691 Due after five years through ten years 954 964 Due after ten years 649 658 2,459 2,479 Total $ 82,046 $ 81,929 Proceeds from sales of investment securities during the three months ended June 30, 2015 and 2014, were $5,672 and $1,988 , respectively. Gross realized gains, during the three months ended June 30, 2015 and 2014, on these sales amount to $41 and $18 , respectively. Gross realized losses on these sales were $24 and $0 , during the three months ended June 30, 2015 and 2014 respectively. Proceeds from sales of investment securities during the nine months ended June 30, 2015 and 2014, were $23,208 and $16,133 , respectively. Gross realized gains, during the nine months ended June 30, 2015 and 2014, on these sales amounted to $166 and $188 , respectively. Gross realized losses on these sales were $76 and $146 , during the nine months ended June 30, 2015 and 2014, respectively. There were no securities that were pledged to secure treasury, tax, and loan deposits and other purposes required or permitted by law at June 30, 2015 and September 30, 2014. Information pertaining to securities with gross unrealized losses, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, are summarized as follows: June 30, 2015 Less than 12 Months 12 Months or Longer Total Fair Value Unrealized Loss Fair Unrealized Fair Unrealized U.S. Government and agency securities $ — $ — $ — $ — $ — $ — U.S. Government agency residential mortgage-backed securities 15,826 (177 ) 7,848 (196 ) 23,674 (373 ) U.S. Government agency collateralized mortgage obligations 3 — 668 (55 ) 671 (55 ) U.S Government agency commercial mortgage-backed securities 6,093 (40 ) — — 6,093 (40 ) Municipal securities 10,339 (162 ) 1,533 (38 ) 11,872 (200 ) $ 32,261 $ (379 ) $ 10,049 $ (289 ) $ 42,310 $ (668 ) September 30, 2014 Less than 12 Months 12 Months or Longer Total Fair Unrealized Fair Unrealized Fair Unrealized U.S. Government and agency securities $ — $ — $ 5,179 $ (71 ) $ 5,179 $ (71 ) U.S. Government agency residential mortgage-backed securities 9,617 (54 ) 13,075 (283 ) 22,692 (337 ) U.S. Government agency collateralized mortgage obligations — — 891 (56 ) 891 (56 ) U.S. Government agency commercial mortgage-backed securities 6,235 (73 ) 1,033 (21 ) 7,268 (94 ) Municipal securities 3,046 (8 ) 13,621 (220 ) 16,667 (228 ) $ 18,898 $ (135 ) $ 33,799 $ (651 ) $ 52,697 $ (786 ) At June 30, 2015, the investment portfolio included 19 securities available-for-sale which had been in an unrealized loss position for more than twelve months and 44 securities available-for-sale which had been in an unrealized loss position for less than twelve months. These securities are considered to be acceptable credit risks. Based upon an evaluation of the available evidence, including recent changes in market rates, credit rating information and information obtained from regulatory filings, management believes the decline in fair value for these securities is temporary. The Company does not have any current requirement to sell and does not intend to sell these securities prior to any anticipated recovery in fair value. At September 30, 2014, the investment portfolio included 63 securities available-for-sale which had been in an unrealized loss position for greater than twelve months and 25 securities available-for-sale which had been in an unrealized loss position for less than twelve months.

Loans

Loans	9 Months Ended
	Jun. 30, 2015
Loans and Leases Receivable Disclosure [Abstract]
Loans	Loans A summary of the balances of loans follows: June 30, 2015 September 30, 2014 Real estate: Single family $ 151,529 $ 135,337 Multifamily 98,950 76,396 Commercial real estate 158,861 135,121 Construction and land development 23,013 16,362 Total real estate 432,353 363,216 Commercial business 39,863 37,675 Consumer: Home equity lines of credit 14,447 14,990 Education 4,199 4,694 Other 517 606 Total consumer 19,163 20,290 Total loans 491,379 421,181 Less: Net deferred loan fees 346 235 Allowance for loan losses 4,536 4,072 Net loans $ 486,497 $ 416,874 The following tables present the contractual aging of the recorded investment in past due loans by class of loans as of June 30, 2015 and September 30, 2014: June 30, 2015 Current 30-59 Days Past Due 60-89 Days Past Due Loans Past or More Total Single family $ 150,521 $ 432 $ 283 $ 293 $ 151,529 Multifamily 98,795 — — 155 98,950 Commercial real estate 158,861 — — — 158,861 Construction and land development 23,013 — — — 23,013 Commercial business 39,863 — — — 39,863 Consumer and other: Home equity lines of credit 14,257 6 — 184 14,447 Education 3,939 106 3 151 4,199 Other 517 — — — 517 $ 489,766 $ 544 $ 286 $ 783 $ 491,379 September 30, 2014 Current 30-59 Days Past Due 60-89 Days Past Due Loans Past or More Total Single family $ 133,102 $ 1,623 $ 162 $ 450 $ 135,337 Multifamily 76,396 — — — 76,396 Commercial real estate 134,584 178 163 196 135,121 Construction and land development 16,362 — — — 16,362 Commercial business 37,653 — — 22 37,675 Consumer and other: Home equity lines of credit 14,633 228 — 129 14,990 Education 4,502 28 44 120 4,694 Other 604 — — 2 606 $ 417,836 $ 2,057 $ 369 $ 919 $ 421,181 There were no loans past due ninety days or more and still accruing interest as of June 30, 2015 and September 30, 2014. The following table presents the recorded investment in nonaccrual loans by class of loans as of June 30, 2015 and September 30, 2014: June 30, 2015 September 30, 2014 Single family $ 436 $ 791 Multifamily 155 — Commercial real estate — 350 Construction and land development — — Commercial business — 22 Consumer and other: Home equity lines of credit 197 145 Education 255 120 Other — 2 $ 1,043 $ 1,430 As part of the on-going monitoring of the credit quality of the Company’s loan portfolio, management categorizes loans into risk categories based on relevant information about the ability of the borrowers to service their debt and comply with various terms of their loan agreements. The Company considers current financial information, historical payment experience, credit documentation, public information and current economic trends. Generally, all sizeable credits receive a financial review no less than annually to monitor and adjust, if necessary, the credit’s risk profile. Credits classified as watch and special mention generally receive a review more frequently than annually. The Company categorizes loans into the following risk categories based on relevant information about the ability of borrowers to service their debt: Pass — A pass asset is well protected by the current worth and paying capacity of the obligor (or guarantors, if any) or by the fair value, less costs to acquire and sell in a timely manner, of any underlying collateral. Watch — A watch asset has potential weaknesses that deserve management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the asset or in the Company’s credit position at some future date. Watch assets are not adversely classified and do not expose the Company to sufficient risk to warrant adverse classification. Special Mention — A special mention asset has characteristics of deterioration in quality exhibited by any number of well-defined weaknesses requiring significant corrective action. The repayment ability of the borrower has not been validated, or has become marginal or weak and the loan may have exhibited some overdue payments or payment extensions and/or renewals. Substandard — A substandard asset is an asset with a well-defined weakness that jeopardizes repayment in whole or in part, of the debt. These credits are inadequately protected by the current sound worth and paying capacity of the obligor or of the collateral pledged. These assets are characterized by the distinct possibility that the Company will or has sustained some loss of principal and/or interest if the deficiencies are not corrected. Doubtful — A doubtful asset is an asset that has all the weaknesses inherent in the substandard classification with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable. These credits have a high probability for loss, yet because certain important and reasonably specific pending factors may work toward the strengthening of the asset, its classification of loss is deferred until its more exact status can be determined. Homogeneous loan types are assessed for credit quality based on the contractual aging status of the loan and payment activity. In certain cases, based upon payment performance, the loan being related with another commercial type loan or for other reasons, a loan may be categorized into one of the risk categories noted above, unless such loan carries private mortgage insurance (PMI). Such assessment is completed at the end of each reporting period. The following tables present the risk category of loans evaluated by internal asset classification based on the most recent analysis performed and the contractual aging as of June 30, 2015 and September 30, 2014: June 30, 2015 Pass Watch Special Mention Substandard Doubtful Total Single family $ 148,541 $ 1,143 $ — $ 1,845 $ — $ 151,529 Multifamily 95,700 3,095 — 155 — 98,950 Commercial real estate 152,221 5,427 412 801 — 158,861 Construction and land development 23,013 — — — — 23,013 Commercial business 38,210 1,530 — 123 — 39,863 Consumer and other: Home equity lines of credit 14,208 — — 239 — 14,447 Education 4,199 — — — — 4,199 Other 517 — — — — 517 Total $ 476,609 $ 11,195 $ 412 $ 3,163 $ — $ 491,379 September 30, 2014 Pass Watch Special Mention Substandard Doubtful Total Single family $ 132,067 $ 1,317 $ 118 $ 1,835 $ — $ 135,337 Multifamily 73,876 1,915 445 160 — 76,396 Commercial real estate 126,319 6,117 858 1,827 — 135,121 Construction and land development 16,357 — — 5 — 16,362 Commercial business 34,112 3,459 — 104 — 37,675 Consumer and other: Home equity lines of credit 14,803 — — 187 — 14,990 Education 4,694 — — — — 4,694 Other 604 — — 2 — 606 $ 402,832 $ 12,808 $ 1,421 $ 4,120 $ — $ 421,181 The following tables provide additional detail of the activity in the allowance for loan losses, by portfolio segment, for the three months ended June 30, 2015 and 2014: Three Months Ended June 30, 2015 Single Family Multifamily Commercial Real Estate Construction and Land Development Commercial Business Consumer and Other Total Allowance for loan losses: Beginning balance $ 1,064 $ 1,025 $ 1,507 $ 361 $ 415 $ 111 $ 4,483 Provision for loan losses 7 22 45 7 37 32 150 Loans charged-off (28 ) — (53 ) — — (24 ) (105 ) Recoveries 1 — 1 — 4 2 8 Ending balance $ 1,044 $ 1,047 $ 1,500 $ 368 $ 456 $ 121 $ 4,536 Period-ended amount allocated for: Individually evaluated for impairment $ 40 $ — $ — $ — $ — $ 56 $ 96 Collectively evaluated for impairment 1,004 1,047 1,500 368 456 65 4,440 Ending Balance $ 1,044 $ 1,047 $ 1,500 $ 368 $ 456 $ 121 $ 4,536 Loans: Individually evaluated for impairment $ 1,578 $ 1,853 $ — $ — $ — $ 226 $ 3,657 Collectively evaluated for impairment 149,951 97,097 158,861 23,013 39,863 18,937 487,722 Ending Balance $ 151,529 $ 98,950 $ 158,861 $ 23,013 $ 39,863 $ 19,163 $ 491,379 Three Months Ended Single Family Multifamily Commercial Construction and Commercial Consumer Total Allowance for loan losses: Beginning balance $ 1,413 $ 107 $ 1,747 $ 252 $ 279 $ 100 $ 3,898 Provision for loan losses 59 690 (451 ) 32 8 (338 ) — Loans charged-off (237 ) — — — — (6 ) (243 ) Recoveries 26 — 4 10 9 335 384 Ending balance $ 1,261 $ 797 $ 1,300 $ 294 $ 296 $ 91 $ 4,039 Period-ended amount allocated for: Individually evaluated for impairment $ 113 $ — $ — $ — $ — $ 59 $ 172 Collectively evaluated for impairment 1,148 797 1,300 294 296 32 3,867 Ending Balance $ 1,261 $ 797 $ 1,300 $ 294 $ 296 $ 91 $ 4,039 Loans: Individually evaluated for impairment $ 1,821 $ 2,572 $ 469 $ — $ — $ 127 $ 4,989 Collectively evaluated for impairment 131,635 69,179 118,960 16,035 24,703 19,551 380,063 Ending Balance $ 133,456 $ 71,751 $ 119,429 $ 16,035 $ 24,703 $ 19,678 $ 385,052 The following tables provide additional detail of the activity in the allowance for loan losses, by portfolio segment, for the nine months ended June 30, 2015 and 2014: Nine Months Ended June 30, 2015 Single Family Multifamily Commercial Real Estate Construction and Land Development Commercial Business Consumer and Other Total Allowance for loan losses: Beginning balance $ 1,072 $ 757 $ 1,412 $ 301 $ 454 $ 76 $ 4,072 Provision for loan losses 196 290 184 67 1 62 800 Loans charged-off (236 ) — (115 ) — (14 ) (26 ) (391 ) Recoveries 12 — 19 — 15 9 55 Ending balance $ 1,044 $ 1,047 $ 1,500 $ 368 $ 456 $ 121 $ 4,536 Period-ended amount allocated for: Individually evaluated for impairment $ 40 $ — $ — $ — $ — $ 56 $ 96 Collectively evaluated for impairment 1,004 1,047 1,500 368 456 65 4,440 Ending Balance $ 1,044 $ 1,047 $ 1,500 $ 368 $ 456 $ 121 $ 4,536 Loans: Individually evaluated for impairment $ 1,578 $ 1,853 $ — $ — $ — $ 226 $ 3,657 Collectively evaluated for impairment 149,951 97,097 158,861 23,013 39,863 18,937 487,722 Ending Balance $ 151,529 $ 98,950 $ 158,861 $ 23,013 $ 39,863 $ 19,163 $ 491,379 Nine Months Ended Single Family Multifamily Commercial Construction and Commercial Consumer Total Allowance for loan losses: Beginning balance $ 1,873 $ 165 $ 1,501 $ 374 $ 211 $ 142 $ 4,266 Provision for loan losses (58 ) 628 15 (90 ) 210 (355 ) 350 Loans charged-off (679 ) — (232 ) — (159 ) (34 ) (1,104 ) Recoveries 125 4 16 10 34 338 527 Ending balance $ 1,261 $ 797 $ 1,300 $ 294 $ 296 $ 91 $ 4,039 Period-ended amount allocated for: Individually evaluated for impairment $ 113 $ — $ — $ — $ — $ 59 $ 172 Collectively evaluated for impairment 1,148 797 1,300 294 296 32 3,867 Ending Balance $ 1,261 $ 797 $ 1,300 $ 294 $ 296 $ 91 $ 4,039 Loans: Individually evaluated for impairment $ 1,821 $ 2,572 $ 469 $ — $ — $ 127 $ 4,989 Collectively evaluated for impairment 131,635 69,179 118,960 16,035 24,703 19,551 380,063 Ending Balance $ 133,456 $ 71,751 $ 119,429 $ 16,035 $ 24,703 $ 19,678 $ 385,052 The following tables present additional detail of impaired loans, segregated by segment, as of and for the three and nine month periods ended June 30, 2015 and 2014. The unpaid principal balance represents the recorded balance prior to any partial charge-offs. The recorded investment represents customer balances net of any partial charge-offs recognized on the loans. The interest income recognized column represents all interest income reported on either a cash or accrual basis after the loan became impaired. Three months ended Nine months ended June 30, 2015 Unpaid Principal Balance Recorded Investment Allowance for Loan Losses Allocated Average Recorded Investment Interest Income Recognized Average Interest With no related allowance recorded: Single family $ 1,376 $ 1,263 $ — $ 1,315 $ 13 $ 1,298 $ 36 Multifamily 1,941 1,853 — 1,864 20 1,884 60 Commercial real estate — — — 543 — 527 — Construction and land development — — — — — — — Commercial business — — — — — — — Consumer and other 272 170 — 196 — 210 — With an allowance recorded: Single family 315 315 40 316 4 336 11 Multifamily — — — — — — — Commercial real estate — — — — — 41 — Construction and land development — — — — — — — Commercial business — — — — — — — Consumer and other 56 56 56 57 1 57 2 $ 3,960 $ 3,657 $ 96 $ 4,291 $ 38 $ 4,353 $ 109 Three months ended Nine months ended June 30, 2014 Unpaid Principal Balance Recorded Investment Allowance for Loan Losses Allocated Average Recorded Investment Interest Income Recognized Average Interest With no related allowance recorded: Single family $ 1,685 $ 1,136 $ — $ 1,735 $ 5 $ 1,867 $ 17 Multifamily 2,871 2,572 — 2,792 28 3,422 85 Commercial real estate 502 469 — 1,266 8 1,520 25 Construction and land development — — — — — — — Commercial business — — — — — — — Consumer and other 175 68 — 93 — 112 — With an allowance recorded: Single family 1,017 685 113 547 1 554 1 Multifamily — — — — — 85 — Commercial real estate — — — — — 95 — Construction and land development — — — — — 48 — Commercial business — — — — — — — Consumer and other 59 59 59 60 1 60 2 $ 6,309 $ 4,989 $ 172 $ 6,493 $ 43 $ 7,763 $ 130 The following is a summary of troubled debt restructured loans (TDRs) at June 30, 2015 and September 30, 2014: June 30, 2015 September 30, 2014 Troubled debt restructurings - accrual $ 2,880 $ 3,507 Troubled debt restructurings - nonaccrual — 195 $ 2,880 $ 3,702 Modifications of loan terms as a TDR are generally in the form of an extension of payment terms or lowering of the interest rate, although occasionally the Company has reduced the outstanding principal balance. There were no loans modified as a TDR during the three months ended June 30, 2015. During the three months ended June 30, 2014, single family loans totaling $320 were modified as a TDR. There were no loans modified as a TDR during the nine months ended June 30, 2015. During the nine months ended June 30, 2014, single family loans totaling $407 were modified as a TDR. There were no re-defaults of TDRs that occurred during the three months or nine months ended June 30, 2015 and 2014. Certain of the Bank’s officers, employees, directors, and their associates are loan customers of the Bank. As of June 30, 2015 and September 30, 2014, loans of approximately $5,682 and $4,653 , respectively, were outstanding to such parties. These loans were underwritten to the same standards as those used for comparable transactions with other persons and do not involve more than the normal risk of collectability. An analysis of such loans is as follows: Nine Months Ended June 30, 2015 Balance, beginning $ 4,653 New loans originated 1,629 Draws on lines of credit 166 Principal repayments (766 ) Balance, ending $ 5,682

Deposits

Deposits	9 Months Ended
	Jun. 30, 2015
Deposits [Abstract]
Deposits	Deposits The following table presents the composition of deposits as of: June 30, 2015 September 30, 2014 Amount Percent Amount Percent Checking Accounts: Noninterest bearing $ 89,862 17.21 % $ 77,790 17.10 % Interest bearing 133,673 25.61 % 132,925 29.22 % 223,535 42.82 % 210,715 46.32 % Passbook and Statement Savings 126,758 24.28 % 122,227 26.87 % Variable Rate Money Market Accounts 50,424 9.66 % 25,615 5.63 % Certificates of Deposit 121,314 23.24 % 96,371 21.18 % $ 522,031 100.00 % $ 454,928 100.00 % Certificates of deposit over one hundred thousand dollars totaled $63,257 and $34,853 as of June 30, 2015 and September 30, 2014, respectively.

Regulatory Capital

Regulatory Capital	9 Months Ended
	Jun. 30, 2015
Regulatory Capital Requirements [Abstract]
Regulatory Capital	Regulatory Capital The federal banking agencies have adopted regulations that substantially amend the capital regulations currently applicable to us. These regulations implement the Basel III regulatory capital reforms and changes required by the Dodd-Frank Act. Effective January 1, 2015 (with some changes transitioned into full effectiveness over two to four years), the Bank became subject to new capital requirements adopted by the OCC. These new requirements create a new required ratio for common equity Tier 1 ("CETI") capital, increase the leverage and Tier 1 capital ratios, change the risk weight of certain assets for purposes of the risk-based capital ratios, create an additional capital conservation buffer over the required capital ratios and change what qualifies as capital for purposes of meeting these various capital requirements. Beginning in 2016, failure to maintain the required capital conservation buffer will limit the ability of the Bank to pay dividends, repurchase shares or pay discretionary bonuses. The Company is exempt from consolidated capital requirements as those requirements do not apply to certain small savings and loan holding companies with assets under $1 billion. Under the new capital regulations, the minimum capital ratios are: (1) CETI capital ratio of 4.5% of risk-weighted assets; (2) a Tier 1 capital ratio of 6.0% of risk-weighted assets: (3) a total capital ratio of 8.0% of risk-weighted assets; and (4) a leverage ratio of 4.0%. CETI generally consists of common stock and retained earnings, subject to applicable regulatory adjustments and deductions. There are a number of changes in what constitutes regulatory capital, some of which are subject to transition periods. These changes include the phasing-out of certain instruments as qualifying capital. The Bank does not use any of these instruments. Under the new requirements for total capital, Tier 2 capital is no longer limited to the amount of Tier 1 capital included in total capital. Mortgage servicing rights, certain deferred tax assets and investments in unconsolidated subsidiaries over designated percentages of CETI will be deducted from capital. The Bank has elected to permanently opt-out of the inclusion of accumulated other comprehensive income in our capital calculations, as permitted by the regulations. This opt-out will reduce the impact of market volatility on our regulatory capital levels. The new requirements also include changes in the risk-weights of assets to better reflect credit risk and other risk exposures. These include a 150% risk weight (increased from 100%) for certain high volatility commercial real estate acquisition, development and construction loans and for non-residential mortgage loans that are 90 days past due or otherwise in non-accrual status; a 20% (increased from 0%) credit conversion factor for the unused portion of a commitment with an original maturity of one year or less that is not unconditionally cancellable; a 250% risk weight (increased from 100%) for mortgage servicing and deferred tax assets that are not deducted from capital; and increased risk weights (0% to 600%) for equity exposures. In addition to the minimum CETI, Tier 1 and total capital ratios, the Bank will have to maintain a capital conservation buffer consisting of additional CETI capital greater than 2.5% of risk-weighted assets above the required minimum levels in order to avoid limitations on paying dividends, engaging in share repurchases, and paying discretionary bonuses based on percentages of eligible retained income that could be utilized for such actions. This new capital conservation buffer requirement will be phased in beginning in January 2016 at 0.625% of risk-weighted assets and increasing each year until fully implemented in January 2019. The OCC's prompt corrective action standards changed effective January 1, 2015. Under the new standards, in order to be considered well-capitalized, the Bank must have a CETI ratio of 6.5% (new), a Tier 1 ratio of 8.0% (increased from 6.0%), a total risk-based capital ratio of 10.0% (unchanged) and a leverage ratio of 5.0% (unchanged). The Bank meets all these new requirements, including the full capital conservation buffer. The Bank’s actual capital amounts and ratios and those required by the regulatory standards in effect as of the dates presented are as follows: At June 30, 2015 Actual For Capital Adequacy Purposes To Be Well Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio CETI capital (to risk-weighted assets) - Westbury Bank $ 64,099 12.61 % $ 22,874 4.50 % $ 33,041 6.50 % Tier 1 capital (to risk-weighted assets) - Westbury Bank 64,099 12.61 % 30,499 6.00 % 40,666 8.00 % Total capital (to risk-weighted assets) - Westbury Bank 68,635 13.50 % 40,673 8.00 % 50,841 10.00 % Leverage (to adjusted total assets) - Westbury Bank 64,099 10.26 % 24,990 4.00 % 31,237 5.00 % At September 30, 2014 Actual For Capital Adequacy To Be Well Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio Total capital (to risk-weighted assets) - Westbury Bank $ 65,181 16.18 % $ 32,228 8.00 % $ 40,285 10.00 % Tier 1 capital (to risk-weighted assets) - Westbury Bank 61,109 15.17 % 16,113 4.00 % 24,170 6.00 % Tier 1 capital (to adjusted total assets) - Westbury Bank 61,109 11.13 % 21,962 4.00 % 27,452 5.00 % The following table reconciles the Bank’s stockholders’ equity to regulatory capital as of June 30, 2015 and September 30, 2014: June 30, 2015 September 30, 2014 Stockholder's equity of the Bank $ 69,093 $ 67,529 Less: Disallowed servicing assets — (162 ) Unrealized (gain) loss on securities 84 33 Disallowed investment in subsidiary (3,296 ) (3,296 ) Disallowed deferred tax assets (1,782 ) (2,995 ) Tier 1 capital and tangible capital 64,099 61,109 Plus: Allowable general valuation allowances 4,536 4,072 Risk-based capital $ 68,635 $ 65,181

Commitments

Commitments	9 Months Ended
	Jun. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments	Commitments The Company is a party to financial instruments with off-balance-sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit and involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the consolidated balance sheets. The contractual amounts of those instruments reflect the extent of involvement the Company has in particular classes of financial instruments. The Company’s exposure to credit loss in the event of nonperformance by the other party to the financial instruments for commitments to extend credit is represented by the contractual amount of those instruments. The Company uses the same credit policies in making commitments and conditional obligations as it does for on-balance-sheet instruments. The following instruments were outstanding whose contract amounts represent credit risk: June 30, 2015 September 30, 2014 Commitments to extend mortgage credit: Fixed rate $ 3,078 $ 960 Adjustable rate 1,488 3,339 Unused commercial loan and home equity lines of credit 87,762 61,325 Standby letters of credit 947 422 Commitment to sell loans 1,504 326 Commitments to extend credit are agreements to lend funds 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. As some such commitments expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Company evaluates each customer’s creditworthiness on a case-by-case basis. The Company generally extends credit only on a secured basis. Collateral obtained varies but consists primarily of single family residences. Unfunded commitments under lines of credit are commitments for possible future extensions of credit to existing customers. These lines of credit may be uncollateralized and ultimately may not be drawn upon to the total extent to which the Company is committed. Standby letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third party. Those letters of credit are primarily issued to support public and private borrowing arrangements, and, generally, have terms of one year or less. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. The Company holds collateral supporting those commitments if deemed necessary. In the event the customer does not perform in accordance with the terms of the agreement with the third party, the Company would be required to fund the commitment. The maximum potential amount of future payments the Company could be required to make is represented by the contractual amount shown in the summary above. If the commitment is funded, the Company would be entitled to seek recovery from the customer. At June 30, 2015 and September 30, 2014, no amounts have been recorded as liabilities for the Company’s potential obligations under these guarantees. Commitments to sell loans are commitments to sell single family mortgage loans to investors on the secondary market.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Jun. 30, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements ASC Topic 820, Fair Value Measurements and Disclosures , defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. ASC Topic 820 requires the use of valuation techniques that are consistent with the market approach, the income approach and/or the cost approach. Inputs to valuation techniques refer to the assumptions that market participants would use in pricing the asset or liability. Inputs may be observable, meaning those that reflect the assumptions market participants would use in pricing the asset or liability developed based on market data obtained from independent sources, or unobservable, meaning those that reflect the reporting entity’s own assumptions about the assumptions market participants would use in pricing the asset or liability developed based on the best information available in the circumstances. In that regard, ASC Topic 820 establishes a fair value hierarchy for valuation inputs that gives the highest priority to quoted prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs. The fair value hierarchy is as follows: Level 1: Quoted prices (unadjusted) for identical assets or liabilities in active markets that the entity has the ability to access as of the measurement date. Level 2: Significant other observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, or other inputs that are observable or can be corroborated by observable market data. Level 3: Significant unobservable inputs that reflect a reporting entity’s own assumptions about the assumptions that market participants would use in pricing an asset or liability. A description of the valuation methodologies used for instruments measured at fair value, as well as the general classification of such instruments pursuant to the valuation hierarchy, is set forth below. Securities available-for-sale : The fair value of the Company’s securities available-for-sale is determined using Level 2 inputs, which are derived from readily available pricing sources and third-party pricing services for comparable instruments. The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, treasury yield curves, trading levels, credit information and credit terms, among other factors. In certain cases where Level 1 or Level 2 are not available, securities are classified within Level 3 of the hierarchy. Derivatives : The fair values of the Company’s embedded derivatives related to certain certificates of deposit are determined using inputs that are observable or that can be corroborated by observable market data (such as the S&P 500 Index and the 10 - year U.S. Treasury rate) and, therefore, are classified within Level 2 of the valuation hierarchy. Assets and liabilities recorded at fair value on a recurring basis : The following table summarizes assets measured at fair value on a recurring basis, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value as of: Fair Value Measurements June 30, 2015 Total Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Other Unobservable Inputs (Level 3) Assets Securities available-for-sale U.S. Government and agency securities $ 25 $ — $ 25 $ — U.S. Government agency residential mortgage-backed securities 40,573 — 40,573 — U.S. Government agency collateralized mortgage obligations 2,147 — 2,147 — U.S. Government agency commercial mortgage-backed securities 11,761 — 11,761 — Municipal securities 24,944 — 24,944 — Total securities available-for-sale $ 79,450 $ — $ 79,450 $ — Derivatives $ 133 $ — $ 133 $ — Liabilities Derivatives $ 133 $ — $ 133 $ — Fair Value Measurements September 30, 2014 Total Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Other Assets Securities available-for-sale U.S. Government and agency securities $ 5,179 $ — $ 5,179 $ — U.S. Government agency residential mortgage-backed securities 37,196 — 37,196 — U.S. Government agency collateralized mortgage obligations 3,432 — 3,432 — U.S. Government agency commercial mortgage-backed securities 10,752 — 10,752 — Municipal securities 33,787 — 33,787 — Total securities available-for-sale $ 90,346 $ — $ 90,346 $ — Derivatives $ 87 $ — $ 87 $ — Liabilities Derivatives $ 87 $ — $ 87 $ — The Company did not have any transfers between Level 1, Level 2, and Level 3 of the fair value hierarchy during the nine months ended June 30, 2015. The Company’s policy for determining transfers between levels occurs at the end of the reporting period when circumstances in the underlying valuation criteria change and result in a transfer between levels. Assets recorded at fair value on a nonrecurring basis : The Company may be required, from time to time, to measure certain instruments at fair value on a nonrecurring basis in accordance with U.S. generally accepted accounting principles. Impaired loans : The Company does not record loans at fair value on a recurring basis. The specific reserves for collateral-dependent impaired loans are based on the fair value of the collateral less estimated costs to sell. The fair value of collateral is determined based on appraisals. In some cases, adjustments were made to the appraised values due to various factors including age of the appraisal, age of comparables included in the appraisal, and known changes in the market and in the collateral. When significant adjustments were based on unobservable inputs, the resulting fair value measurement has been categorized as a Level 3 measurement. Impaired loans with a carrying amount of $371 and $541 have a valuation allowance of $96 and $136 included in the allowance for loan losses to reflect their fair value as of June 30, 2015 and September 30, 2014, respectively. Foreclosed real estate : The Company does not record foreclosed real estate owned at a fair value on a recurring basis. The fair value of foreclosed real estate was determined using Level 3 inputs based on appraisals or broker pricing opinions. In some cases, adjustments were made to these values due to various factors including the age of the appraisal, age of comparables included in the appraisal, and known changes in the market and in collateral. Foreclosed real estate is measured at fair value less estimated costs to sell at the date of foreclosure. Subsequent to foreclosure, additional writedowns may be recorded based on changes to the fair value of the assets. Mortgage servicing rights : Mortgage servicing rights ("MSRs") do not trade in an active, open market with readily observable prices. While sales of MSRs do occur, the precise terms and conditions typically are not readily available. Accordingly, the Company estimates the fair value of MSRs using discounted cash flow models incorporating numerous assumptions from the perspective of market participants including servicing income, servicing costs, market discount rates, prepayments speeds, and default rates. Due to the nature of the valuation inputs, MSRs are classified within Level 3 of the valuation hierarchy. As of June 30, 2015, mortgage servicing rights with a carrying amount of $1,464 have a valuation allowance of $105 to reflect their fair value of $1,359 . As of September 30, 2014, mortgage servicing rights with a carrying amount of $1,784 have a valuation allowance of $160 to reflect their fair value of $1,624 . Fair Value Measurements June 30, 2015 Total Quoted Prices in Significant Other Significant Other Assets Impaired loans $ 275 $ — $ — $ 275 Foreclosed real estate 1,411 — — 1,411 Mortgage servicing rights 1,359 — — 1,359 Fair Value Measurements September 30, 2014 Total Quoted Prices in Significant Other Significant Other Assets Impaired loans $ 405 $ — $ — $ 405 Foreclosed real estate 2,355 — — 2,355 Mortgage servicing rights 1,624 — — 1,624 Disclosure of fair value information about financial instruments, for which it is practicable to estimate that value, is required whether or not recognized in the consolidated balance sheets. In cases where quoted market prices are not available, fair values are based on estimates using present value or other valuation techniques. Those techniques are significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. In that regard, the derived fair value estimates cannot be substantiated by comparison to independent markets and, in many cases, could not be realized in immediate settlement of the instruments. Certain financial instruments with a fair value that is not practicable to estimate and all non-financial instruments are excluded from the disclosure requirements. Accordingly, the aggregate fair value amounts presented do not necessarily represent the underlying value of the Company for assets and liabilities not previously described. The Company, in estimating its fair value disclosures for financial instruments not described above, used the following methods and assumptions: Cash and cash equivalents : The carrying amounts of cash and cash equivalents reported in the consolidated balance sheets approximate those assets’ fair values. Securities held to maturity: The fair values of securities held to maturity are based on quoted market prices for similar securities, adjusted for differences in security characteristics. Loans : For variable-rate mortgage loans that re-price frequently and with no significant change in credit risk, fair values are based on carrying values. The fair values for fixed rate residential mortgage loans are based on quoted market prices for similar loans sold in conjunction with sale transactions, adjusted for differences in loan characteristics. The fair values for commercial real estate loans, rental property mortgage loans, and consumer and other loans are estimated using discounted cash flow analyses and using interest rates currently being offered for loans with similar terms to borrowers of similar credit quality. Loans held for sale : Fair value of loans held for sale are based on commitments on hand from investors or prevailing market prices. Federal Home Loan Bank stock : The carrying amount of FHLB stock approximates its fair value based on the redemption provisions of the FHLB. Accrued interest receivable and payable : The carrying amounts of accrued interest receivable and payable approximate their fair values. Deposits : The fair value disclosed for interest-bearing and non-interest-bearing checking accounts, savings accounts, and money market accounts are equal to the amount payable on demand at the reporting date (i.e., their carrying amounts). The fair values of fixed rate certificates of deposit are estimated using a discounted cash flow calculation that applies interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities of the outstanding certificates of deposit. Advances from the Federal Home Loan Bank : The fair values of FHLB advances are estimated using discounted cash flow analyses, based on the Company’s current incremental borrowing rates for similar types of borrowing arrangements. Advance payments by borrowers for property taxes and insurance : The carrying amounts of the advance payments by borrowers for property taxes and insurance approximate their fair values. Mortgage banking derivatives : The fair value of commitments to originate mortgage loans held for sale is estimated by comparing the Company’s cost to acquire mortgages and the current price for similar mortgage loans, taking into account the terms of the commitments and the credit worthiness of the counterparties. The fair value of forward commitments to sell residential mortgage loans is the estimated amount that the Bank would receive or pay to terminate the forward delivery contract at the reporting date based on market prices for similar financial instruments. The fair value of these derivative financial instruments was not material at June 30, 2015 and September 30, 2014. The estimated fair values and related carrying amounts of the Company’s financial instruments are as follows: June 30, 2015 Carrying Amount Estimated Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Other Unobservable Inputs (Level 3) Financial assets: Cash and cash equivalents $ 15,964 $ 15,964 $ 15,964 $ — $ — Securities available for sale 79,450 79,450 — 79,450 — Securities held to maturity 2,459 2,479 — 2,479 — Loans, net 486,497 486,828 — — 486,828 Loans held for sale, net 1,504 1,504 — 1,504 — Federal Home Loan Bank stock 3,350 3,350 — — 3,350 Mortgage servicing rights 1,359 1,359 — — 1,359 Accrued interest receivable 1,897 1,897 1,897 — — Derivative asset 133 133 — 133 — Financial liabilities: Deposits 522,031 499,860 89,862 — 409,998 Advances from Federal Home Loan Bank 22,000 22,000 — 22,000 — Advance payments by borrowers for property taxes and insurance 3,734 3,734 3,734 — — Accrued interest payable 5 5 5 — — Derivative liability 133 133 — 133 — September 30, 2014 Carrying Estimated Fair Quoted Prices in Significant Other Significant Other Financial assets: Cash and cash equivalents $ 17,608 $ 17,608 $ 17,608 $ — $ — Securities available for sale 90,346 90,346 — 90,346 — Loans, net 416,874 415,857 — — 415,857 Loans held for sale, net 326 326 — 326 — Federal Home Loan Bank stock 2,670 2,670 — — 2,670 Mortgage servicing rights 1,624 1,624 — — 1,624 Accrued interest receivable 1,784 1,784 1,784 — — Derivative asset 87 87 — 87 — Financial liabilities: Deposits 454,928 442,342 77,790 — 364,552 Advances from Federal Home Loan Bank 17,000 17,000 — 17,000 — Advance payments by borrowers for property taxes and insurance 5,869 5,869 5,869 — — Accrued interest payable 3 3 3 — — Derivative liability 87 87 — 87 —

Employee Stock Ownership Plan

Employee Stock Ownership Plan	9 Months Ended
	Jun. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Employee Stock Ownership Plan	Employee Stock Ownership Plan The Bank maintains a leveraged employee stock ownership plan ("ESOP") that covers all employees meeting certain minimum age and service requirements. The ESOP was established in conjunction with the Company's stock offering completed in April 2013 and operates on a plan year ending December 31. The ESOP initially borrowed $4.1 million from the Company and used those funds to acquire 411,403 shares, or 8.0% of the total number of shares issued by the Company in its initial public offering. The shares were acquired at a price of $10.00 per share. The Bank makes annual contributions to the ESOP equal to the ESOP's debt service. The ESOP shares were pledged as collateral for its debt. As the debt is repaid, shares are released from collateral and allocated to active participants, based on the proportion of debt service paid in the year. The debt repayment and release of shares generally occurs at December 31, the plan year end date. The Company accounts for its ESOP in accordance with ASC 718-40. Accordingly, because the debt is intercompany, it is eliminated in consolidation for presentation in these statements. The shares pledged as collateral are reported as unearned ESOP shares in the balance sheet. Total ESOP shares may be reduced as a result of employees leaving the Company as shares that have previously been released to those exiting employees may be removed from the ESOP and transferred to that employee. As shares are committed to be released from collateral, the Company reports compensation expense equal to the current market price of the shares, and the shares become outstanding for EPS computations. During the three months ended June 30, 2015, 5,143 shares were committed to be released. The total ESOP compensation expense recorded for the three months ended June 30, 2015 and 2014 was $90 and $74 respectively. During the nine months ended June 30, 2015, 15,427 shares were committed to be released, 5,142 of which were released and available for allocation at December 31, 2014 concurrent with the payment of the annual debt service on the ESOP loan. The total ESOP compensation expense recorded for the nine months ended June 30, 2015 and 2014 was $288 and $242 respectively. The ESOP shares as of June 30, 2015 and September 30, 2014 were as follows (in thousands, except share data): June 30, 2015 September 30, 2014 Allocated shares to active participants 34,892 20,570 Shares committed to be released 10,285 15,428 Unallocated shares 359,978 375,405 Total ESOP shares 405,155 411,403 Fair value of unallocated shares $ 6,238 $ 5,650 Equity Compensation Plans ASC Topic 718 requires that the grant date fair value of equity awards to employees be recognized as compensation expense over the period during which an employee is required to provide service in exchange for such award. The following table summarizes the impact of the Company's share-based payment plans in the financial statements for the periods shown: Three Months Ended June 30, Nine Months Ended June 30, 2015 2014 2015 2014 Total cost of stock grant plan during the period $ 154 $ — $ 464 $ — Total cost of stock option plan during the period 46 — 138 — Total cost of share-based payment plans during the period $ 200 $ — $ 602 — Amount of related income tax benefit recognized in income $ 78 $ — $ 236 $ — The Company adopted the Westbury Bancorp Inc 2014 Equity Incentive Plan (the "Plan") in 2014. In June 2014, the Company's stockholders approved the Plan which authorized the issuance of up to 203,665 restricted stock awards and up to 509,162 stock options. As of June 30, 2015 there were no restricted stock awards and 99,513 options available for future grants. Annual equity-based incentive awards are typically granted to selected officers and employees mid-year. Options are granted with an exercise price equal to no less than the market price of the Company's shares at the date of grant: those option awards generally vest over five years of service and have 10 -year contractual terms. Restricted shares and units typically vest over a five year period. Equity awards may also be granted at other times throughout the year in connection with the recruitment and retention of officers and employees. The following table summarizes stock options outstanding for the three and nine months ended June 30, 2015: Number of Options Weighted Average Exercise Price Weighted Average Remaining Contractual Term (in years) Aggregate Intrinsic Value (in thousands) Options outstanding as of March 31, 2015 326,224 $ 15.20 Granted 83,425 17.35 Exercised — — Expired or canceled — — Forfeited — — Options outstanding as of June 30, 2015 409,649 $ 15.64 9.2 $ 695 Options exercisable as of June 30, 2015 65,244 $ 15.20 9.0 $ 139 Number of Options Weighted Average Exercise Price Weighted Average Remaining Contractual Term (in years) Aggregate Intrinsic Value (in thousands) Options outstanding as of September 30, 2014 326,224 $ 15.20 Granted 83,425 17.35 Exercised — — Expired or canceled — — Forfeited — — Options outstanding as of June 30, 2015 409,649 $ 15.64 9.2 $ 695 Options exercisable as of June 30, 2015 65,244 $ 15.20 9.0 $ 139 The fair value of each option award is estimated on the date of grant using the Black-Scholes option pricing model based on certain assumptions. Expected volatility is based on historical volatility and the expectations of future volatility of Company shares. The risk free interest rate for periods within the contractual term of the option is based on the U.S. Treasury yield curve in effect at the time of the grant. The expected life of options is estimated based on historical employee behavior and represents the period of time that options granted are expected to remain outstanding. The following assumptions were used for options granted during the years ended September 30: 2015 2014 Risk-free interest rate 2.10 % 2.10 % Expected volatility of Company's stock 7.44 % 9.49 % Expected dividend yield — % — % Expected life of options (years) 7.5 7.5 Weighted average fair value per option of options granted during the year $ 2.95 $ 2.82 The total intrinsic value of options exercised during the three and nine months ended June 30, 2015 was $703,000 . The following is a summary of changes in restricted shares for the three and nine months ended June 30, 2015: Number of Shares Weighted Average Grant Date Fair Value Shares Outstanding at March 31, 2015 203,665 $ 15.20 Granted — — Vested (40,529 ) 15.20 Forfeited (1,018 ) 15.20 Shares Outstanding at June 30, 2015 162,118 $ 15.20 Number of Shares Weighted Average Grant Date Fair Value Shares Outstanding at September 30, 2014 203,665 $ 15.20 Granted — — Vested (40,529 ) 15.20 Forfeited (1,018 ) 15.20 Shares Outstanding at June 30, 2015 162,118 $ 15.20 The total intrinsic value of restricted shares that vested during the nine months ended June 30, 2015 was $0 . As of June 30, 2015, there was $3.4 million of total unrecognized compensation cost related to nonvested share-based compensation arrangements (including share option and nonvested share awards) granted under the Plan. At June 30, 2015, the weighted-average period over which the unrecognized compensation expense is expected to be recognized was approximately 4.1 years.

Compensation Equity Plans (Note

Compensation Equity Plans (Notes)	9 Months Ended
	Jun. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Compensation Equity Plans	Employee Stock Ownership Plan The Bank maintains a leveraged employee stock ownership plan ("ESOP") that covers all employees meeting certain minimum age and service requirements. The ESOP was established in conjunction with the Company's stock offering completed in April 2013 and operates on a plan year ending December 31. The ESOP initially borrowed $4.1 million from the Company and used those funds to acquire 411,403 shares, or 8.0% of the total number of shares issued by the Company in its initial public offering. The shares were acquired at a price of $10.00 per share. The Bank makes annual contributions to the ESOP equal to the ESOP's debt service. The ESOP shares were pledged as collateral for its debt. As the debt is repaid, shares are released from collateral and allocated to active participants, based on the proportion of debt service paid in the year. The debt repayment and release of shares generally occurs at December 31, the plan year end date. The Company accounts for its ESOP in accordance with ASC 718-40. Accordingly, because the debt is intercompany, it is eliminated in consolidation for presentation in these statements. The shares pledged as collateral are reported as unearned ESOP shares in the balance sheet. Total ESOP shares may be reduced as a result of employees leaving the Company as shares that have previously been released to those exiting employees may be removed from the ESOP and transferred to that employee. As shares are committed to be released from collateral, the Company reports compensation expense equal to the current market price of the shares, and the shares become outstanding for EPS computations. During the three months ended June 30, 2015, 5,143 shares were committed to be released. The total ESOP compensation expense recorded for the three months ended June 30, 2015 and 2014 was $90 and $74 respectively. During the nine months ended June 30, 2015, 15,427 shares were committed to be released, 5,142 of which were released and available for allocation at December 31, 2014 concurrent with the payment of the annual debt service on the ESOP loan. The total ESOP compensation expense recorded for the nine months ended June 30, 2015 and 2014 was $288 and $242 respectively. The ESOP shares as of June 30, 2015 and September 30, 2014 were as follows (in thousands, except share data): June 30, 2015 September 30, 2014 Allocated shares to active participants 34,892 20,570 Shares committed to be released 10,285 15,428 Unallocated shares 359,978 375,405 Total ESOP shares 405,155 411,403 Fair value of unallocated shares $ 6,238 $ 5,650 Equity Compensation Plans ASC Topic 718 requires that the grant date fair value of equity awards to employees be recognized as compensation expense over the period during which an employee is required to provide service in exchange for such award. The following table summarizes the impact of the Company's share-based payment plans in the financial statements for the periods shown: Three Months Ended June 30, Nine Months Ended June 30, 2015 2014 2015 2014 Total cost of stock grant plan during the period $ 154 $ — $ 464 $ — Total cost of stock option plan during the period 46 — 138 — Total cost of share-based payment plans during the period $ 200 $ — $ 602 — Amount of related income tax benefit recognized in income $ 78 $ — $ 236 $ — The Company adopted the Westbury Bancorp Inc 2014 Equity Incentive Plan (the "Plan") in 2014. In June 2014, the Company's stockholders approved the Plan which authorized the issuance of up to 203,665 restricted stock awards and up to 509,162 stock options. As of June 30, 2015 there were no restricted stock awards and 99,513 options available for future grants. Annual equity-based incentive awards are typically granted to selected officers and employees mid-year. Options are granted with an exercise price equal to no less than the market price of the Company's shares at the date of grant: those option awards generally vest over five years of service and have 10 -year contractual terms. Restricted shares and units typically vest over a five year period. Equity awards may also be granted at other times throughout the year in connection with the recruitment and retention of officers and employees. The following table summarizes stock options outstanding for the three and nine months ended June 30, 2015: Number of Options Weighted Average Exercise Price Weighted Average Remaining Contractual Term (in years) Aggregate Intrinsic Value (in thousands) Options outstanding as of March 31, 2015 326,224 $ 15.20 Granted 83,425 17.35 Exercised — — Expired or canceled — — Forfeited — — Options outstanding as of June 30, 2015 409,649 $ 15.64 9.2 $ 695 Options exercisable as of June 30, 2015 65,244 $ 15.20 9.0 $ 139 Number of Options Weighted Average Exercise Price Weighted Average Remaining Contractual Term (in years) Aggregate Intrinsic Value (in thousands) Options outstanding as of September 30, 2014 326,224 $ 15.20 Granted 83,425 17.35 Exercised — — Expired or canceled — — Forfeited — — Options outstanding as of June 30, 2015 409,649 $ 15.64 9.2 $ 695 Options exercisable as of June 30, 2015 65,244 $ 15.20 9.0 $ 139 The fair value of each option award is estimated on the date of grant using the Black-Scholes option pricing model based on certain assumptions. Expected volatility is based on historical volatility and the expectations of future volatility of Company shares. The risk free interest rate for periods within the contractual term of the option is based on the U.S. Treasury yield curve in effect at the time of the grant. The expected life of options is estimated based on historical employee behavior and represents the period of time that options granted are expected to remain outstanding. The following assumptions were used for options granted during the years ended September 30: 2015 2014 Risk-free interest rate 2.10 % 2.10 % Expected volatility of Company's stock 7.44 % 9.49 % Expected dividend yield — % — % Expected life of options (years) 7.5 7.5 Weighted average fair value per option of options granted during the year $ 2.95 $ 2.82 The total intrinsic value of options exercised during the three and nine months ended June 30, 2015 was $703,000 . The following is a summary of changes in restricted shares for the three and nine months ended June 30, 2015: Number of Shares Weighted Average Grant Date Fair Value Shares Outstanding at March 31, 2015 203,665 $ 15.20 Granted — — Vested (40,529 ) 15.20 Forfeited (1,018 ) 15.20 Shares Outstanding at June 30, 2015 162,118 $ 15.20 Number of Shares Weighted Average Grant Date Fair Value Shares Outstanding at September 30, 2014 203,665 $ 15.20 Granted — — Vested (40,529 ) 15.20 Forfeited (1,018 ) 15.20 Shares Outstanding at June 30, 2015 162,118 $ 15.20 The total intrinsic value of restricted shares that vested during the nine months ended June 30, 2015 was $0 . As of June 30, 2015, there was $3.4 million of total unrecognized compensation cost related to nonvested share-based compensation arrangements (including share option and nonvested share awards) granted under the Plan. At June 30, 2015, the weighted-average period over which the unrecognized compensation expense is expected to be recognized was approximately 4.1 years.

Condensed Parent Company Financ

Condensed Parent Company Financial Information (Notes)	9 Months Ended
	Jun. 30, 2015
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Parent Company Financial Information	Condensed Parent Company Financial Information The condensed financial statements of Westbury Bancorp, Inc. (parent company only) are presented below: Balance Sheets June 30, September 30, 2015 2014 Assets Cash and interest bearing deposits $ 1,697 $ 6,878 Investments 439 6,590 Loan to ESOP 3,778 3,931 Investment in subsidiary 72,408 71,131 Other assets 2,338 1,674 Total assets $ 80,660 $ 90,204 Liabilities and Stockholders' Equity Total liabilities $ 344 $ 115 Stockholders' equity 80,316 90,089 Total liabilities and stockholders' equity $ 80,660 $ 90,204 Statements of Operations Three Months Ended June 30, Nine Months Ended June 30, 2015 2014 2015 2014 Interest and other income $ 35 $ 90 $ 161 $ 231 Interest and other expense 199 157 548 605 Loss before income tax benefit and equity in undistributed net income of subsidiary (164 ) (67 ) (387 ) (374 ) Income tax benefit (46 ) (22 ) (100 ) (115 ) Loss before equity in undistributed net income (loss) of subsidiary (118 ) (45 ) (287 ) (259 ) Equity in undistributed net income (loss) of subsidiary 228 114 1,328 (1,403 ) Net income (loss) $ 110 $ 69 $ 1,041 $ (1,662 ) Statements of Cash Flows For Nine Months Ended June 30, 2015 2014 Cash Flows From Operating Activities Net income (loss) $ 1,041 $ (1,662 ) Adjustments to reconcile net income (loss) to net cash used in operating activities: Equity in undistributed net income (loss) of subsidiary (1,328 ) 1,403 Net change in other liabilities 229 (12 ) Net change in other assets (48 ) (25 ) Net cash used in operating activities (106 ) (296 ) Cash Flows From Investing Activities Purchase of securities (728 ) (1,850 ) Sales and maturities of securities 6,879 3,110 Payments received on ESOP loan 153 183 Net cash provided by investing activities 6,304 1,443 Cash Flows From Financing Activities Repurchase of common stock (11,379 ) (1,587 ) Net cash used in financing activities (11,379 ) (1,587 ) Net decrease in cash (5,181 ) (440 ) Cash Beginning of period 6,878 9,271 End of period $ 1,697 $ 8,831

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Jun. 30, 2015
Earnings Per Share [Abstract]
Schedule of calculated earnings per share, basic and diluted	The following table presents a reconciliation of the number of shares used in the calculation of basic and diluted earnings per common share (in thousands, except share and per share data). Three Months Ended June 30, Nine Months Ended June 30, 2015 2014 2015 2014 Net income (loss) $ 110 $ 69 $ 1,041 $ (1,662 ) Basic potential common shares: Weighted average shares outstanding 4,264,273 5,132,913 4,585,717 5,139,332 Weighted average unallocated ESOP shares (363,407 ) (383,120 ) (368,568 ) (388,605 ) Basic weighted average shares outstanding 3,900,866 4,749,793 4,217,149 4,750,727 Dilutive effect of equity awards 9,081 18 — 6 Diluted weighted average shares outstanding 3,909,947 4,749,811 4,217,149 4,750,733 Basic income (loss) per share $ 0.03 $ 0.01 $ 0.25 $ (0.35 ) Diluted income (loss) per share $ 0.03 $ 0.01 $ 0.25 $ (0.35 )

Investment Securitites (Tables)

Investment Securitites (Tables)	9 Months Ended
	Jun. 30, 2015
Investments, Debt and Equity Securities [Abstract]
Schedule of amortized costs and fair values of securities available-for-sale	The amortized cost and fair value of investment securities are summarized as follows: June 30, 2015 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Available for Sale U.S. Government and agency securities $ 24 $ 1 $ — $ 25 U.S. Government agency residential mortgage-backed securities 40,619 327 (373 ) 40,573 U.S. Government agency collateralized mortgage obligations 2,184 18 (55 ) 2,147 U.S. Government agency commercial mortgage-backed securities 11,737 64 (40 ) 11,761 Municipal securities 25,023 121 (200 ) 24,944 Total Available for Sale 79,587 531 (668 ) 79,450 Held to Maturity Municipal securities 2,459 20 — 2,479 Total Investment Securities $ 82,046 $ 551 $ (668 ) $ 81,929 September 30, 2014 Amortized Gross Gross Fair Available for Sale U.S. Government and agency securities $ 5,250 $ — $ (71 ) $ 5,179 U.S. Government agency residential mortgage-backed securities 37,144 389 (337 ) 37,196 U.S. Government agency collateralized mortgage obligations 3,458 30 (56 ) 3,432 U.S. Government agency commercial mortgage-backed securities 10,835 11 (94 ) 10,752 Municipal securities 33,735 280 (228 ) 33,787 Total Available for Sale 90,422 710 (786 ) 90,346 Held to Maturity Municipal securities — — — — Total Investment Securities $ 90,422 $ 710 $ (786 ) $ 90,346
Schedule of amortized cost and estimated fair value of investment securities by contractual maturity	The amortized cost and fair value of investment securities, by contractual maturity at June 30, 2015 are shown in the following table. Actual maturities differ from contractual maturities for mortgage-backed securities because the mortgages underlying the securities may be called or repaid without penalty. Therefore, these securities are not presented in the maturity categories in the table below. June 30, 2015 Amortized Cost Fair Value Available for sale: Due in one year or less $ 5,620 $ 5,647 Due after one year through five years 8,940 9,001 Due after five years through ten years 8,884 8,778 Due after ten years 1,603 1,543 U.S. Government agency collateralized mortgage obligations 2,184 2,147 U.S. Government agency residential mortgage-backed securities 40,619 40,573 U.S. Government agency commercial mortgage-backed securities 11,737 11,761 79,587 79,450 Held to maturity: Due in one year or less 166 166 Due after one year through five years 690 691 Due after five years through ten years 954 964 Due after ten years 649 658 2,459 2,479 Total $ 82,046 $ 81,929
Schedule of investment securities in an unrealized loss position	Information pertaining to securities with gross unrealized losses, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, are summarized as follows: June 30, 2015 Less than 12 Months 12 Months or Longer Total Fair Value Unrealized Loss Fair Unrealized Fair Unrealized U.S. Government and agency securities $ — $ — $ — $ — $ — $ — U.S. Government agency residential mortgage-backed securities 15,826 (177 ) 7,848 (196 ) 23,674 (373 ) U.S. Government agency collateralized mortgage obligations 3 — 668 (55 ) 671 (55 ) U.S Government agency commercial mortgage-backed securities 6,093 (40 ) — — 6,093 (40 ) Municipal securities 10,339 (162 ) 1,533 (38 ) 11,872 (200 ) $ 32,261 $ (379 ) $ 10,049 $ (289 ) $ 42,310 $ (668 ) September 30, 2014 Less than 12 Months 12 Months or Longer Total Fair Unrealized Fair Unrealized Fair Unrealized U.S. Government and agency securities $ — $ — $ 5,179 $ (71 ) $ 5,179 $ (71 ) U.S. Government agency residential mortgage-backed securities 9,617 (54 ) 13,075 (283 ) 22,692 (337 ) U.S. Government agency collateralized mortgage obligations — — 891 (56 ) 891 (56 ) U.S. Government agency commercial mortgage-backed securities 6,235 (73 ) 1,033 (21 ) 7,268 (94 ) Municipal securities 3,046 (8 ) 13,621 (220 ) 16,667 (228 ) $ 18,898 $ (135 ) $ 33,799 $ (651 ) $ 52,697 $ (786 )

Loans (Tables)

Loans (Tables)	9 Months Ended
	Jun. 30, 2015
Loans
Summary of balances of loans	A summary of the balances of loans follows: June 30, 2015 September 30, 2014 Real estate: Single family $ 151,529 $ 135,337 Multifamily 98,950 76,396 Commercial real estate 158,861 135,121 Construction and land development 23,013 16,362 Total real estate 432,353 363,216 Commercial business 39,863 37,675 Consumer: Home equity lines of credit 14,447 14,990 Education 4,199 4,694 Other 517 606 Total consumer 19,163 20,290 Total loans 491,379 421,181 Less: Net deferred loan fees 346 235 Allowance for loan losses 4,536 4,072 Net loans $ 486,497 $ 416,874
Schedule of contractual aging of recorded investment in past due loans	The following tables present the contractual aging of the recorded investment in past due loans by class of loans as of June 30, 2015 and September 30, 2014: June 30, 2015 Current 30-59 Days Past Due 60-89 Days Past Due Loans Past or More Total Single family $ 150,521 $ 432 $ 283 $ 293 $ 151,529 Multifamily 98,795 — — 155 98,950 Commercial real estate 158,861 — — — 158,861 Construction and land development 23,013 — — — 23,013 Commercial business 39,863 — — — 39,863 Consumer and other: Home equity lines of credit 14,257 6 — 184 14,447 Education 3,939 106 3 151 4,199 Other 517 — — — 517 $ 489,766 $ 544 $ 286 $ 783 $ 491,379 September 30, 2014 Current 30-59 Days Past Due 60-89 Days Past Due Loans Past or More Total Single family $ 133,102 $ 1,623 $ 162 $ 450 $ 135,337 Multifamily 76,396 — — — 76,396 Commercial real estate 134,584 178 163 196 135,121 Construction and land development 16,362 — — — 16,362 Commercial business 37,653 — — 22 37,675 Consumer and other: Home equity lines of credit 14,633 228 — 129 14,990 Education 4,502 28 44 120 4,694 Other 604 — — 2 606 $ 417,836 $ 2,057 $ 369 $ 919 $ 421,181
Schedule of risk category of loans	The following tables present the risk category of loans evaluated by internal asset classification based on the most recent analysis performed and the contractual aging as of June 30, 2015 and September 30, 2014: June 30, 2015 Pass Watch Special Mention Substandard Doubtful Total Single family $ 148,541 $ 1,143 $ — $ 1,845 $ — $ 151,529 Multifamily 95,700 3,095 — 155 — 98,950 Commercial real estate 152,221 5,427 412 801 — 158,861 Construction and land development 23,013 — — — — 23,013 Commercial business 38,210 1,530 — 123 — 39,863 Consumer and other: Home equity lines of credit 14,208 — — 239 — 14,447 Education 4,199 — — — — 4,199 Other 517 — — — — 517 Total $ 476,609 $ 11,195 $ 412 $ 3,163 $ — $ 491,379 September 30, 2014 Pass Watch Special Mention Substandard Doubtful Total Single family $ 132,067 $ 1,317 $ 118 $ 1,835 $ — $ 135,337 Multifamily 73,876 1,915 445 160 — 76,396 Commercial real estate 126,319 6,117 858 1,827 — 135,121 Construction and land development 16,357 — — 5 — 16,362 Commercial business 34,112 3,459 — 104 — 37,675 Consumer and other: Home equity lines of credit 14,803 — — 187 — 14,990 Education 4,694 — — — — 4,694 Other 604 — — 2 — 606 $ 402,832 $ 12,808 $ 1,421 $ 4,120 $ — $ 421,181
Schedule of activity in the allowance for loan losses, by portfolio segment	The following tables provide additional detail of the activity in the allowance for loan losses, by portfolio segment, for the three months ended June 30, 2015 and 2014: Three Months Ended June 30, 2015 Single Family Multifamily Commercial Real Estate Construction and Land Development Commercial Business Consumer and Other Total Allowance for loan losses: Beginning balance $ 1,064 $ 1,025 $ 1,507 $ 361 $ 415 $ 111 $ 4,483 Provision for loan losses 7 22 45 7 37 32 150 Loans charged-off (28 ) — (53 ) — — (24 ) (105 ) Recoveries 1 — 1 — 4 2 8 Ending balance $ 1,044 $ 1,047 $ 1,500 $ 368 $ 456 $ 121 $ 4,536 Period-ended amount allocated for: Individually evaluated for impairment $ 40 $ — $ — $ — $ — $ 56 $ 96 Collectively evaluated for impairment 1,004 1,047 1,500 368 456 65 4,440 Ending Balance $ 1,044 $ 1,047 $ 1,500 $ 368 $ 456 $ 121 $ 4,536 Loans: Individually evaluated for impairment $ 1,578 $ 1,853 $ — $ — $ — $ 226 $ 3,657 Collectively evaluated for impairment 149,951 97,097 158,861 23,013 39,863 18,937 487,722 Ending Balance $ 151,529 $ 98,950 $ 158,861 $ 23,013 $ 39,863 $ 19,163 $ 491,379 Three Months Ended Single Family Multifamily Commercial Construction and Commercial Consumer Total Allowance for loan losses: Beginning balance $ 1,413 $ 107 $ 1,747 $ 252 $ 279 $ 100 $ 3,898 Provision for loan losses 59 690 (451 ) 32 8 (338 ) — Loans charged-off (237 ) — — — — (6 ) (243 ) Recoveries 26 — 4 10 9 335 384 Ending balance $ 1,261 $ 797 $ 1,300 $ 294 $ 296 $ 91 $ 4,039 Period-ended amount allocated for: Individually evaluated for impairment $ 113 $ — $ — $ — $ — $ 59 $ 172 Collectively evaluated for impairment 1,148 797 1,300 294 296 32 3,867 Ending Balance $ 1,261 $ 797 $ 1,300 $ 294 $ 296 $ 91 $ 4,039 Loans: Individually evaluated for impairment $ 1,821 $ 2,572 $ 469 $ — $ — $ 127 $ 4,989 Collectively evaluated for impairment 131,635 69,179 118,960 16,035 24,703 19,551 380,063 Ending Balance $ 133,456 $ 71,751 $ 119,429 $ 16,035 $ 24,703 $ 19,678 $ 385,052 The following tables provide additional detail of the activity in the allowance for loan losses, by portfolio segment, for the nine months ended June 30, 2015 and 2014: Nine Months Ended June 30, 2015 Single Family Multifamily Commercial Real Estate Construction and Land Development Commercial Business Consumer and Other Total Allowance for loan losses: Beginning balance $ 1,072 $ 757 $ 1,412 $ 301 $ 454 $ 76 $ 4,072 Provision for loan losses 196 290 184 67 1 62 800 Loans charged-off (236 ) — (115 ) — (14 ) (26 ) (391 ) Recoveries 12 — 19 — 15 9 55 Ending balance $ 1,044 $ 1,047 $ 1,500 $ 368 $ 456 $ 121 $ 4,536 Period-ended amount allocated for: Individually evaluated for impairment $ 40 $ — $ — $ — $ — $ 56 $ 96 Collectively evaluated for impairment 1,004 1,047 1,500 368 456 65 4,440 Ending Balance $ 1,044 $ 1,047 $ 1,500 $ 368 $ 456 $ 121 $ 4,536 Loans: Individually evaluated for impairment $ 1,578 $ 1,853 $ — $ — $ — $ 226 $ 3,657 Collectively evaluated for impairment 149,951 97,097 158,861 23,013 39,863 18,937 487,722 Ending Balance $ 151,529 $ 98,950 $ 158,861 $ 23,013 $ 39,863 $ 19,163 $ 491,379 Nine Months Ended Single Family Multifamily Commercial Construction and Commercial Consumer Total Allowance for loan losses: Beginning balance $ 1,873 $ 165 $ 1,501 $ 374 $ 211 $ 142 $ 4,266 Provision for loan losses (58 ) 628 15 (90 ) 210 (355 ) 350 Loans charged-off (679 ) — (232 ) — (159 ) (34 ) (1,104 ) Recoveries 125 4 16 10 34 338 527 Ending balance $ 1,261 $ 797 $ 1,300 $ 294 $ 296 $ 91 $ 4,039 Period-ended amount allocated for: Individually evaluated for impairment $ 113 $ — $ — $ — $ — $ 59 $ 172 Collectively evaluated for impairment 1,148 797 1,300 294 296 32 3,867 Ending Balance $ 1,261 $ 797 $ 1,300 $ 294 $ 296 $ 91 $ 4,039 Loans: Individually evaluated for impairment $ 1,821 $ 2,572 $ 469 $ — $ — $ 127 $ 4,989 Collectively evaluated for impairment 131,635 69,179 118,960 16,035 24,703 19,551 380,063 Ending Balance $ 133,456 $ 71,751 $ 119,429 $ 16,035 $ 24,703 $ 19,678 $ 385,052
Schedule of impaired loans	Three months ended Nine months ended June 30, 2015 Unpaid Principal Balance Recorded Investment Allowance for Loan Losses Allocated Average Recorded Investment Interest Income Recognized Average Interest With no related allowance recorded: Single family $ 1,376 $ 1,263 $ — $ 1,315 $ 13 $ 1,298 $ 36 Multifamily 1,941 1,853 — 1,864 20 1,884 60 Commercial real estate — — — 543 — 527 — Construction and land development — — — — — — — Commercial business — — — — — — — Consumer and other 272 170 — 196 — 210 — With an allowance recorded: Single family 315 315 40 316 4 336 11 Multifamily — — — — — — — Commercial real estate — — — — — 41 — Construction and land development — — — — — — — Commercial business — — — — — — — Consumer and other 56 56 56 57 1 57 2 $ 3,960 $ 3,657 $ 96 $ 4,291 $ 38 $ 4,353 $ 109 Three months ended Nine months ended June 30, 2014 Unpaid Principal Balance Recorded Investment Allowance for Loan Losses Allocated Average Recorded Investment Interest Income Recognized Average Interest With no related allowance recorded: Single family $ 1,685 $ 1,136 $ — $ 1,735 $ 5 $ 1,867 $ 17 Multifamily 2,871 2,572 — 2,792 28 3,422 85 Commercial real estate 502 469 — 1,266 8 1,520 25 Construction and land development — — — — — — — Commercial business — — — — — — — Consumer and other 175 68 — 93 — 112 — With an allowance recorded: Single family 1,017 685 113 547 1 554 1 Multifamily — — — — — 85 — Commercial real estate — — — — — 95 — Construction and land development — — — — — 48 — Commercial business — — — — — — — Consumer and other 59 59 59 60 1 60 2 $ 6,309 $ 4,989 $ 172 $ 6,493 $ 43 $ 7,763 $ 130
Schedule of loans modified in a TDR, by class
Schedule of Loans and Leases Receivable, Related Parties	An analysis of such loans is as follows: Nine Months Ended June 30, 2015 Balance, beginning $ 4,653 New loans originated 1,629 Draws on lines of credit 166 Principal repayments (766 ) Balance, ending $ 5,682
Past due loans
Loans
Schedule of recorded investment by accrual status	The following table presents the recorded investment in nonaccrual loans by class of loans as of June 30, 2015 and September 30, 2014: June 30, 2015 September 30, 2014 Single family $ 436 $ 791 Multifamily 155 — Commercial real estate — 350 Construction and land development — — Commercial business — 22 Consumer and other: Home equity lines of credit 197 145 Education 255 120 Other — 2 $ 1,043 $ 1,430
Troubled debt restructurings
Loans
Schedule of recorded investment by accrual status	The following is a summary of troubled debt restructured loans (TDRs) at June 30, 2015 and September 30, 2014: June 30, 2015 September 30, 2014 Troubled debt restructurings - accrual $ 2,880 $ 3,507 Troubled debt restructurings - nonaccrual — 195 $ 2,880 $ 3,702

Deposits (Tables)

Deposits (Tables)	9 Months Ended
	Jun. 30, 2015
Deposits [Abstract]
Schedule of composition of deposits	The following table presents the composition of deposits as of: June 30, 2015 September 30, 2014 Amount Percent Amount Percent Checking Accounts: Noninterest bearing $ 89,862 17.21 % $ 77,790 17.10 % Interest bearing 133,673 25.61 % 132,925 29.22 % 223,535 42.82 % 210,715 46.32 % Passbook and Statement Savings 126,758 24.28 % 122,227 26.87 % Variable Rate Money Market Accounts 50,424 9.66 % 25,615 5.63 % Certificates of Deposit 121,314 23.24 % 96,371 21.18 % $ 522,031 100.00 % $ 454,928 100.00 %

Regulatory Capital (Tables)

Regulatory Capital (Tables)	9 Months Ended
	Jun. 30, 2015
Regulatory Capital Requirements [Abstract]
Schedule of actual capital amounts and ratios and those required by the above regulatory standards	The Bank’s actual capital amounts and ratios and those required by the regulatory standards in effect as of the dates presented are as follows: At June 30, 2015 Actual For Capital Adequacy Purposes To Be Well Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio CETI capital (to risk-weighted assets) - Westbury Bank $ 64,099 12.61 % $ 22,874 4.50 % $ 33,041 6.50 % Tier 1 capital (to risk-weighted assets) - Westbury Bank 64,099 12.61 % 30,499 6.00 % 40,666 8.00 % Total capital (to risk-weighted assets) - Westbury Bank 68,635 13.50 % 40,673 8.00 % 50,841 10.00 % Leverage (to adjusted total assets) - Westbury Bank 64,099 10.26 % 24,990 4.00 % 31,237 5.00 % At September 30, 2014 Actual For Capital Adequacy To Be Well Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio Total capital (to risk-weighted assets) - Westbury Bank $ 65,181 16.18 % $ 32,228 8.00 % $ 40,285 10.00 % Tier 1 capital (to risk-weighted assets) - Westbury Bank 61,109 15.17 % 16,113 4.00 % 24,170 6.00 % Tier 1 capital (to adjusted total assets) - Westbury Bank 61,109 11.13 % 21,962 4.00 % 27,452 5.00 %
Schedule of reconciliation of the Bank's stockholders' equity to regulatory capital	The following table reconciles the Bank’s stockholders’ equity to regulatory capital as of June 30, 2015 and September 30, 2014: June 30, 2015 September 30, 2014 Stockholder's equity of the Bank $ 69,093 $ 67,529 Less: Disallowed servicing assets — (162 ) Unrealized (gain) loss on securities 84 33 Disallowed investment in subsidiary (3,296 ) (3,296 ) Disallowed deferred tax assets (1,782 ) (2,995 ) Tier 1 capital and tangible capital 64,099 61,109 Plus: Allowable general valuation allowances 4,536 4,072 Risk-based capital $ 68,635 $ 65,181

Commitments (Tables)

Commitments (Tables)	9 Months Ended
	Jun. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Schedule of financial instruments whose contract amounts represent credit risk	The following instruments were outstanding whose contract amounts represent credit risk: June 30, 2015 September 30, 2014 Commitments to extend mortgage credit: Fixed rate $ 3,078 $ 960 Adjustable rate 1,488 3,339 Unused commercial loan and home equity lines of credit 87,762 61,325 Standby letters of credit 947 422 Commitment to sell loans 1,504 326

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Jun. 30, 2015
Fair Value Disclosures [Abstract]
Schedule of assets and liabilities measured at fair value on a recurring basis	The following table summarizes assets measured at fair value on a recurring basis, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value as of: Fair Value Measurements June 30, 2015 Total Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Other Unobservable Inputs (Level 3) Assets Securities available-for-sale U.S. Government and agency securities $ 25 $ — $ 25 $ — U.S. Government agency residential mortgage-backed securities 40,573 — 40,573 — U.S. Government agency collateralized mortgage obligations 2,147 — 2,147 — U.S. Government agency commercial mortgage-backed securities 11,761 — 11,761 — Municipal securities 24,944 — 24,944 — Total securities available-for-sale $ 79,450 $ — $ 79,450 $ — Derivatives $ 133 $ — $ 133 $ — Liabilities Derivatives $ 133 $ — $ 133 $ — Fair Value Measurements September 30, 2014 Total Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Other Assets Securities available-for-sale U.S. Government and agency securities $ 5,179 $ — $ 5,179 $ — U.S. Government agency residential mortgage-backed securities 37,196 — 37,196 — U.S. Government agency collateralized mortgage obligations 3,432 — 3,432 — U.S. Government agency commercial mortgage-backed securities 10,752 — 10,752 — Municipal securities 33,787 — 33,787 — Total securities available-for-sale $ 90,346 $ — $ 90,346 $ — Derivatives $ 87 $ — $ 87 $ — Liabilities Derivatives $ 87 $ — $ 87 $ —
Schedule of assets measured at fair value on a nonrecurring basis	Fair Value Measurements June 30, 2015 Total Quoted Prices in Significant Other Significant Other Assets Impaired loans $ 275 $ — $ — $ 275 Foreclosed real estate 1,411 — — 1,411 Mortgage servicing rights 1,359 — — 1,359 Fair Value Measurements September 30, 2014 Total Quoted Prices in Significant Other Significant Other Assets Impaired loans $ 405 $ — $ — $ 405 Foreclosed real estate 2,355 — — 2,355 Mortgage servicing rights 1,624 — — 1,624
Schedule of estimated fair values and related carrying amounts of the entity's financial instruments	The estimated fair values and related carrying amounts of the Company’s financial instruments are as follows: June 30, 2015 Carrying Amount Estimated Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Other Unobservable Inputs (Level 3) Financial assets: Cash and cash equivalents $ 15,964 $ 15,964 $ 15,964 $ — $ — Securities available for sale 79,450 79,450 — 79,450 — Securities held to maturity 2,459 2,479 — 2,479 — Loans, net 486,497 486,828 — — 486,828 Loans held for sale, net 1,504 1,504 — 1,504 — Federal Home Loan Bank stock 3,350 3,350 — — 3,350 Mortgage servicing rights 1,359 1,359 — — 1,359 Accrued interest receivable 1,897 1,897 1,897 — — Derivative asset 133 133 — 133 — Financial liabilities: Deposits 522,031 499,860 89,862 — 409,998 Advances from Federal Home Loan Bank 22,000 22,000 — 22,000 — Advance payments by borrowers for property taxes and insurance 3,734 3,734 3,734 — — Accrued interest payable 5 5 5 — — Derivative liability 133 133 — 133 — September 30, 2014 Carrying Estimated Fair Quoted Prices in Significant Other Significant Other Financial assets: Cash and cash equivalents $ 17,608 $ 17,608 $ 17,608 $ — $ — Securities available for sale 90,346 90,346 — 90,346 — Loans, net 416,874 415,857 — — 415,857 Loans held for sale, net 326 326 — 326 — Federal Home Loan Bank stock 2,670 2,670 — — 2,670 Mortgage servicing rights 1,624 1,624 — — 1,624 Accrued interest receivable 1,784 1,784 1,784 — — Derivative asset 87 87 — 87 — Financial liabilities: Deposits 454,928 442,342 77,790 — 364,552 Advances from Federal Home Loan Bank 17,000 17,000 — 17,000 — Advance payments by borrowers for property taxes and insurance 5,869 5,869 5,869 — — Accrued interest payable 3 3 3 — — Derivative liability 87 87 — 87 —

Compensation Equity Plans (Tabl

Compensation Equity Plans (Tables)	9 Months Ended
	Jun. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Allocation of Share-based Compensation Costs by Plan	The following table summarizes the impact of the Company's share-based payment plans in the financial statements for the periods shown: Three Months Ended June 30, Nine Months Ended June 30, 2015 2014 2015 2014 Total cost of stock grant plan during the period $ 154 $ — $ 464 $ — Total cost of stock option plan during the period 46 — 138 — Total cost of share-based payment plans during the period $ 200 $ — $ 602 — Amount of related income tax benefit recognized in income $ 78 $ — $ 236 $ —
Schedule of Stock Options Activity	The following table summarizes stock options outstanding for the three and nine months ended June 30, 2015: Number of Options Weighted Average Exercise Price Weighted Average Remaining Contractual Term (in years) Aggregate Intrinsic Value (in thousands) Options outstanding as of March 31, 2015 326,224 $ 15.20 Granted 83,425 17.35 Exercised — — Expired or canceled — — Forfeited — — Options outstanding as of June 30, 2015 409,649 $ 15.64 9.2 $ 695 Options exercisable as of June 30, 2015 65,244 $ 15.20 9.0 $ 139 Number of Options Weighted Average Exercise Price Weighted Average Remaining Contractual Term (in years) Aggregate Intrinsic Value (in thousands) Options outstanding as of September 30, 2014 326,224 $ 15.20 Granted 83,425 17.35 Exercised — — Expired or canceled — — Forfeited — — Options outstanding as of June 30, 2015 409,649 $ 15.64 9.2 $ 695 Options exercisable as of June 30, 2015 65,244 $ 15.20 9.0 $ 139
Schedule of Stock Options Valuation Assumptions	The following assumptions were used for options granted during the years ended September 30: 2015 2014 Risk-free interest rate 2.10 % 2.10 % Expected volatility of Company's stock 7.44 % 9.49 % Expected dividend yield — % — % Expected life of options (years) 7.5 7.5 Weighted average fair value per option of options granted during the year $ 2.95 $ 2.82
Schedule of Restricted Stock Units Award Activity	The following is a summary of changes in restricted shares for the three and nine months ended June 30, 2015: Number of Shares Weighted Average Grant Date Fair Value Shares Outstanding at March 31, 2015 203,665 $ 15.20 Granted — — Vested (40,529 ) 15.20 Forfeited (1,018 ) 15.20 Shares Outstanding at June 30, 2015 162,118 $ 15.20 Number of Shares Weighted Average Grant Date Fair Value Shares Outstanding at September 30, 2014 203,665 $ 15.20 Granted — — Vested (40,529 ) 15.20 Forfeited (1,018 ) 15.20 Shares Outstanding at June 30, 2015 162,118 $ 15.20

Condensed Parent Company Fina29

Condensed Parent Company Financial Information (Tables)	9 Months Ended
	Jun. 30, 2015
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Balance Sheet	The condensed financial statements of Westbury Bancorp, Inc. (parent company only) are presented below: Balance Sheets June 30, September 30, 2015 2014 Assets Cash and interest bearing deposits $ 1,697 $ 6,878 Investments 439 6,590 Loan to ESOP 3,778 3,931 Investment in subsidiary 72,408 71,131 Other assets 2,338 1,674 Total assets $ 80,660 $ 90,204 Liabilities and Stockholders' Equity Total liabilities $ 344 $ 115 Stockholders' equity 80,316 90,089 Total liabilities and stockholders' equity $ 80,660 $ 90,204
Condensed Income Statement	Statements of Operations Three Months Ended June 30, Nine Months Ended June 30, 2015 2014 2015 2014 Interest and other income $ 35 $ 90 $ 161 $ 231 Interest and other expense 199 157 548 605 Loss before income tax benefit and equity in undistributed net income of subsidiary (164 ) (67 ) (387 ) (374 ) Income tax benefit (46 ) (22 ) (100 ) (115 ) Loss before equity in undistributed net income (loss) of subsidiary (118 ) (45 ) (287 ) (259 ) Equity in undistributed net income (loss) of subsidiary 228 114 1,328 (1,403 ) Net income (loss) $ 110 $ 69 $ 1,041 $ (1,662 )
Condensed Cash Flow Statement	Statements of Cash Flows For Nine Months Ended June 30, 2015 2014 Cash Flows From Operating Activities Net income (loss) $ 1,041 $ (1,662 ) Adjustments to reconcile net income (loss) to net cash used in operating activities: Equity in undistributed net income (loss) of subsidiary (1,328 ) 1,403 Net change in other liabilities 229 (12 ) Net change in other assets (48 ) (25 ) Net cash used in operating activities (106 ) (296 ) Cash Flows From Investing Activities Purchase of securities (728 ) (1,850 ) Sales and maturities of securities 6,879 3,110 Payments received on ESOP loan 153 183 Net cash provided by investing activities 6,304 1,443 Cash Flows From Financing Activities Repurchase of common stock (11,379 ) (1,587 ) Net cash used in financing activities (11,379 ) (1,587 ) Net decrease in cash (5,181 ) (440 ) Cash Beginning of period 6,878 9,271 End of period $ 1,697 $ 8,831

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Earnings Per Share [Abstract]
Net income (loss)	$ 110	$ 69	$ 1,041	$ (1,662)
Basic potential common shares:
Weighted average shares outstanding (in shares)	4,264,273	5,132,913	4,585,717	5,139,332
Weighted average unallocated ESOP shares (in shares)	(363,407)	(383,120)	(368,568)	(388,605)
Basic weighted average shares outstanding (in shares)	3,900,866	4,749,793	4,217,149	4,750,727
Dilutive potential common shares (in shares)	9,081	18	0	6
Diluted weighted average shares outstanding (in shares)	3,909,947	4,749,811	4,217,149	4,750,733
Basic loss per share (in dollars per share)	$ 0.03	$ 0.01	$ 0.25	$ (0.35)
Diluted loss per share (in dollars per share)	$ 0.03	$ 0.01	$ 0.25	$ (0.35)

Investment Securitites (Details

Investment Securitites (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Sep. 30, 2014
Securities Available for Sale
Amortized Cost	$ 79,587	$ 90,422
Gross Unrealized Gains	531	710
Gross Unrealized (Losses)	(668)	(786)
Fair Value	79,450	90,346
Held-to-maturity Securities [Abstract]
Amortized Cost	2,459	0
Fair Value	2,479
Total Investment Securities
Amortized Cost	82,046	90,422
Gross Unrealized Gains	551	710
Gross Unrealized Losses	(668)	(786)
Fair Value	81,929	90,346
U.S. Government and agency securities
Securities Available for Sale
Amortized Cost	24	5,250
Gross Unrealized Gains	1	0
Gross Unrealized (Losses)	0	(71)
Fair Value	25	5,179
U.S. Government agency residential mortgage-backed securities
Securities Available for Sale
Amortized Cost	40,619	37,144
Gross Unrealized Gains	327	389
Gross Unrealized (Losses)	(373)	(337)
Fair Value	40,573	37,196
U.S. Government agency collateralized mortgage obligations
Securities Available for Sale
Amortized Cost	2,184	3,458
Gross Unrealized Gains	18	30
Gross Unrealized (Losses)	(55)	(56)
Fair Value	2,147	3,432
U.S. Government agency commercial mortgage-backed securities
Securities Available for Sale
Amortized Cost	11,737	10,835
Gross Unrealized Gains	64	11
Gross Unrealized (Losses)	(40)	(94)
Fair Value	11,761	10,752
Municipal securities
Securities Available for Sale
Amortized Cost	25,023	33,735
Gross Unrealized Gains	121	280
Gross Unrealized (Losses)	(200)	(228)
Fair Value	24,944	33,787
Held-to-maturity Securities [Abstract]
Amortized Cost	2,459	0
Gross Unrealized Gains	20	0
Gross Unrealized Losses	0	0
Fair Value	$ 2,479	$ 0

Investment Securitites (Detai32

Investment Securitites (Details 2) - USD ($)	3 Months Ended		9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Sep. 30, 2014
Available for Sale, Amortized Cost
Due in one year or less	$ 5,620,000		$ 5,620,000
Due after one year through five years	8,940,000		8,940,000
Due after five years through ten years	8,884,000		8,884,000
Due after ten years	1,603,000		1,603,000
Total	79,587,000		79,587,000
Available for Sale, Fair Value
Due in one year or less	5,647,000		5,647,000
Due after one year through five years	9,001,000		9,001,000
Due after five years through ten years	8,778,000		8,778,000
Due after ten years	1,543,000		1,543,000
Fair Value	79,450,000		79,450,000		$ 90,346,000
Other disclosures
Proceeds from sales of securities available-for-sale	5,672,000	$ 1,988,000	23,208,000	$ 16,133,000
Gross realized gains on the sale of securities available-for-sale	41,000	18,000	166,000	188,000
Gross realized losses on the sale of securities available-for-sale	24,000	$ 0	76,000	$ 146,000
Securities pledged to secure treasury, tax, and loan deposits and other purposes	0		0		0
Held to maturity, Amortized Cost
Due in one year or less	166,000		166,000
Due after one year through five years	690,000		690,000
Due after five years through ten years	954,000		954,000
Due after five years through ten years	649,000		649,000
Amortized Cost	2,459,000		2,459,000		0
Amortized Cost	82,046,000		82,046,000		90,422,000
Held to maturity, Fair Value
Due in one year or less	166,000		166,000
Due after one year through five years	691,000		691,000
Due after five years through ten years	964,000		964,000
Due after ten years	658,000		658,000
Fair Value	2,479,000		2,479,000
Investment Securities	81,929,000		81,929,000		90,346,000
U.S. Government agency collateralized mortgage obligations
Available for Sale, Amortized Cost
U.S. Government agency securities	2,184,000		2,184,000
Available for Sale, Fair Value
U.S. Government agency securities	2,147,000		2,147,000
Fair Value	2,147,000		2,147,000		3,432,000
U.S. Government agency residential mortgage-backed securities
Available for Sale, Amortized Cost
U.S. Government agency securities	40,619,000		40,619,000
Available for Sale, Fair Value
U.S. Government agency securities	40,573,000		40,573,000
Fair Value	40,573,000		40,573,000		37,196,000
U.S. Government agency commercial mortgage-backed securities
Available for Sale, Amortized Cost
U.S. Government agency securities	11,737,000		11,737,000
Available for Sale, Fair Value
U.S. Government agency securities	11,761,000		11,761,000
Fair Value	$ 11,761,000		$ 11,761,000		$ 10,752,000

Investment Securitites (Detai33

Investment Securitites (Details 3) $ in Thousands	Jun. 30, 2015USD ($)security	Sep. 30, 2014USD ($)security
Total temporary impaired securities
Less than 12 months, Fair Value	$ 32,261	$ 18,898
Less than 12 months, Unrealized Losses	(379)	(135)
12 months or longer, Fair Value	10,049	33,799
12 months or longer, Unrealized Losses	(289)	(651)
Total, Fair Value	42,310	52,697
Total, Unrealized Losses	$ (668)	$ (786)
Number of securities in an unrealized loss position, greater than twelve months | security	19	63
Number of securities in an unrealized loss position, less than twelve months | security	44	25
U.S. Government and agency securities
Total temporary impaired securities
Less than 12 months, Fair Value	$ 0	$ 0
Less than 12 months, Unrealized Losses	0	0
12 months or longer, Fair Value	0	5,179
12 months or longer, Unrealized Losses	0	(71)
Total, Fair Value	0	5,179
Total, Unrealized Losses	0	(71)
U.S. Government agency residential mortgage-backed securities
Total temporary impaired securities
Less than 12 months, Fair Value	15,826	9,617
Less than 12 months, Unrealized Losses	(177)	(54)
12 months or longer, Fair Value	7,848	13,075
12 months or longer, Unrealized Losses	(196)	(283)
Total, Fair Value	23,674	22,692
Total, Unrealized Losses	(373)	(337)
U.S. Government agency collateralized mortgage obligations
Total temporary impaired securities
Less than 12 months, Fair Value	3	0
Less than 12 months, Unrealized Losses	0	0
12 months or longer, Fair Value	668	891
12 months or longer, Unrealized Losses	(55)	(56)
Total, Fair Value	671	891
Total, Unrealized Losses	(55)	(56)
U.S. Government agency commercial mortgage-backed securities
Total temporary impaired securities
Less than 12 months, Fair Value	6,093	6,235
Less than 12 months, Unrealized Losses	(40)	(73)
12 months or longer, Fair Value	0	1,033
12 months or longer, Unrealized Losses	0	(21)
Total, Fair Value	6,093	7,268
Total, Unrealized Losses	(40)	(94)
Municipal securities
Total temporary impaired securities
Less than 12 months, Fair Value	10,339	3,046
Less than 12 months, Unrealized Losses	(162)	(8)
12 months or longer, Fair Value	1,533	13,621
12 months or longer, Unrealized Losses	(38)	(220)
Total, Fair Value	11,872	16,667
Total, Unrealized Losses	$ (200)	$ (228)

Loans (Details)

Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Mar. 31, 2015	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Sep. 30, 2013
Loans
Loans	$ 491,379		$ 421,181	$ 385,052
Less: Net deferred loan fees	346		235
Less: Allowance for loan losses	4,536	$ 4,483	4,072	4,039	$ 3,898	$ 4,266
Net loans	486,497		416,874
Real Estate
Loans
Loans	432,353		363,216
Single family
Loans
Loans	151,529		135,337	133,456
Less: Allowance for loan losses	1,044	1,064	1,072	1,261	1,413	1,873
Multifamily
Loans
Loans	98,950		76,396	71,751
Less: Allowance for loan losses	1,047	1,025	757	797	107	165
Commercial real estate
Loans
Loans	158,861		135,121	119,429
Less: Allowance for loan losses	1,500	1,507	1,412	1,300	1,747	1,501
Construction and land development
Loans
Loans	23,013		16,362	16,035
Less: Allowance for loan losses	368	361	301	294	252	374
Commercial business
Loans
Loans	39,863		37,675	24,703
Less: Allowance for loan losses	456	415	454	296	279	211
Consumer
Loans
Loans	19,163		20,290	19,678
Less: Allowance for loan losses	121	$ 111	76	$ 91	$ 100	$ 142
Home equity lines of credit
Loans
Loans	14,447		14,990
Education
Loans
Loans	4,199		4,694
Other
Loans
Loans	$ 517		$ 606

Loans (Details 2)

Loans (Details 2) - USD ($)	Jun. 30, 2015	Sep. 30, 2014	Jun. 30, 2014
Contractual aging of the recorded investment in past due loans
Current	$ 489,766,000	$ 417,836,000
Total Loans	491,379,000	421,181,000	$ 385,052,000
Troubled debt restructurings - accrual	0	0
Past due loans
Contractual aging of the recorded investment in past due loans
Recorded investment in nonaccrual loans	1,043,000	1,430,000
Single family
Contractual aging of the recorded investment in past due loans
Current	150,521,000	133,102,000
Total Loans	151,529,000	135,337,000	133,456,000
Single family | Past due loans
Contractual aging of the recorded investment in past due loans
Recorded investment in nonaccrual loans	436,000	791,000
Multifamily
Contractual aging of the recorded investment in past due loans
Current	98,795,000	76,396,000
Total Loans	98,950,000	76,396,000	71,751,000
Multifamily | Past due loans
Contractual aging of the recorded investment in past due loans
Recorded investment in nonaccrual loans	155,000	0
Construction and land development
Contractual aging of the recorded investment in past due loans
Current	23,013,000	16,362,000
Total Loans	23,013,000	16,362,000	16,035,000
Construction and land development | Past due loans
Contractual aging of the recorded investment in past due loans
Recorded investment in nonaccrual loans	0	0
Commercial business
Contractual aging of the recorded investment in past due loans
Current	39,863,000	37,653,000
Total Loans	39,863,000	37,675,000	24,703,000
Commercial business | Past due loans
Contractual aging of the recorded investment in past due loans
Recorded investment in nonaccrual loans	0	22,000
Home equity lines of credit
Contractual aging of the recorded investment in past due loans
Current	14,257,000	14,633,000
Total Loans	14,447,000	14,990,000
Home equity lines of credit | Past due loans
Contractual aging of the recorded investment in past due loans
Recorded investment in nonaccrual loans	197,000	145,000
Commercial real estate
Contractual aging of the recorded investment in past due loans
Current	158,861,000	134,584,000
Total Loans	158,861,000	135,121,000	$ 119,429,000
Commercial real estate | Past due loans
Contractual aging of the recorded investment in past due loans
Recorded investment in nonaccrual loans	0	350,000
Education
Contractual aging of the recorded investment in past due loans
Current	3,939,000	4,502,000
Total Loans	4,199,000	4,694,000
Education | Past due loans
Contractual aging of the recorded investment in past due loans
Recorded investment in nonaccrual loans	255,000	120,000
Other
Contractual aging of the recorded investment in past due loans
Current	517,000	604,000
Total Loans	517,000	606,000
Other | Past due loans
Contractual aging of the recorded investment in past due loans
Recorded investment in nonaccrual loans	0	2,000
Financing Receivables, 60 to 89 Days Past Due
Contractual aging of the recorded investment in past due loans
Financing Receivable, Recorded Investment, Past Due	286,000	369,000
Financing Receivables, 60 to 89 Days Past Due | Single family
Contractual aging of the recorded investment in past due loans
Financing Receivable, Recorded Investment, Past Due	283,000	162,000
Financing Receivables, 60 to 89 Days Past Due | Multifamily
Contractual aging of the recorded investment in past due loans
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivables, 60 to 89 Days Past Due | Construction and land development
Contractual aging of the recorded investment in past due loans
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivables, 60 to 89 Days Past Due | Commercial business
Contractual aging of the recorded investment in past due loans
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivables, 60 to 89 Days Past Due | Home equity lines of credit
Contractual aging of the recorded investment in past due loans
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivables, 60 to 89 Days Past Due | Commercial real estate
Contractual aging of the recorded investment in past due loans
Financing Receivable, Recorded Investment, Past Due	0	163,000
Financing Receivables, 60 to 89 Days Past Due | Education
Contractual aging of the recorded investment in past due loans
Financing Receivable, Recorded Investment, Past Due	3,000	44,000
Financing Receivables, 60 to 89 Days Past Due | Other
Contractual aging of the recorded investment in past due loans
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivables, 30 to 59 Days Past Due
Contractual aging of the recorded investment in past due loans
Financing Receivable, Recorded Investment, Past Due	544,000	2,057,000
Financing Receivables, 30 to 59 Days Past Due | Single family
Contractual aging of the recorded investment in past due loans
Financing Receivable, Recorded Investment, Past Due	432,000	1,623,000
Financing Receivables, 30 to 59 Days Past Due | Multifamily
Contractual aging of the recorded investment in past due loans
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivables, 30 to 59 Days Past Due | Construction and land development
Contractual aging of the recorded investment in past due loans
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivables, 30 to 59 Days Past Due | Commercial business
Contractual aging of the recorded investment in past due loans
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivables, 30 to 59 Days Past Due | Home equity lines of credit
Contractual aging of the recorded investment in past due loans
Financing Receivable, Recorded Investment, Past Due	6,000	228,000
Financing Receivables, 30 to 59 Days Past Due | Commercial real estate
Contractual aging of the recorded investment in past due loans
Financing Receivable, Recorded Investment, Past Due	0	178,000
Financing Receivables, 30 to 59 Days Past Due | Education
Contractual aging of the recorded investment in past due loans
Financing Receivable, Recorded Investment, Past Due	106,000	28,000
Financing Receivables, 30 to 59 Days Past Due | Other
Contractual aging of the recorded investment in past due loans
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due
Contractual aging of the recorded investment in past due loans
Financing Receivable, Recorded Investment, Past Due	783,000	919,000
Financing Receivables, Equal to Greater than 90 Days Past Due | Single family
Contractual aging of the recorded investment in past due loans
Financing Receivable, Recorded Investment, Past Due	293,000	450,000
Financing Receivables, Equal to Greater than 90 Days Past Due | Multifamily
Contractual aging of the recorded investment in past due loans
Financing Receivable, Recorded Investment, Past Due	155,000	0
Financing Receivables, Equal to Greater than 90 Days Past Due | Construction and land development
Contractual aging of the recorded investment in past due loans
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due | Commercial business
Contractual aging of the recorded investment in past due loans
Financing Receivable, Recorded Investment, Past Due	0	22,000
Financing Receivables, Equal to Greater than 90 Days Past Due | Home equity lines of credit
Contractual aging of the recorded investment in past due loans
Financing Receivable, Recorded Investment, Past Due	184,000	129,000
Financing Receivables, Equal to Greater than 90 Days Past Due | Commercial real estate
Contractual aging of the recorded investment in past due loans
Financing Receivable, Recorded Investment, Past Due	0	196,000
Financing Receivables, Equal to Greater than 90 Days Past Due | Education
Contractual aging of the recorded investment in past due loans
Financing Receivable, Recorded Investment, Past Due	151,000	120,000
Financing Receivables, Equal to Greater than 90 Days Past Due | Other
Contractual aging of the recorded investment in past due loans
Financing Receivable, Recorded Investment, Past Due	$ 0	$ 2,000

Loans (Details 3)

Loans (Details 3) - USD ($) $ in Thousands	Jun. 30, 2015	Sep. 30, 2014	Jun. 30, 2014
Risk category of loans evaluated by internal asset classification
Total	$ 491,379	$ 421,181	$ 385,052
Single family
Risk category of loans evaluated by internal asset classification
Total	151,529	135,337	133,456
Multifamily
Risk category of loans evaluated by internal asset classification
Total	98,950	76,396	71,751
Commercial real estate
Risk category of loans evaluated by internal asset classification
Total	158,861	135,121	119,429
Construction and land development
Risk category of loans evaluated by internal asset classification
Total	23,013	16,362	16,035
Commercial business
Risk category of loans evaluated by internal asset classification
Total	39,863	37,675	$ 24,703
Home equity lines of credit
Risk category of loans evaluated by internal asset classification
Total	14,447	14,990
Education
Risk category of loans evaluated by internal asset classification
Total	4,199	4,694
Other
Risk category of loans evaluated by internal asset classification
Total	517	606
Pass
Risk category of loans evaluated by internal asset classification
Total	476,609	402,832
Pass | Single family
Risk category of loans evaluated by internal asset classification
Total	148,541	132,067
Pass | Multifamily
Risk category of loans evaluated by internal asset classification
Total	95,700	73,876
Pass | Commercial real estate
Risk category of loans evaluated by internal asset classification
Total	152,221	126,319
Pass | Construction and land development
Risk category of loans evaluated by internal asset classification
Total	23,013	16,357
Pass | Commercial business
Risk category of loans evaluated by internal asset classification
Total	38,210	34,112
Pass | Home equity lines of credit
Risk category of loans evaluated by internal asset classification
Total	14,208	14,803
Pass | Education
Risk category of loans evaluated by internal asset classification
Total	4,199	4,694
Pass | Other
Risk category of loans evaluated by internal asset classification
Total	517	604
Watch
Risk category of loans evaluated by internal asset classification
Total	11,195	12,808
Watch | Single family
Risk category of loans evaluated by internal asset classification
Total	1,143	1,317
Watch | Multifamily
Risk category of loans evaluated by internal asset classification
Total	3,095	1,915
Watch | Commercial real estate
Risk category of loans evaluated by internal asset classification
Total	5,427	6,117
Watch | Construction and land development
Risk category of loans evaluated by internal asset classification
Total	0	0
Watch | Commercial business
Risk category of loans evaluated by internal asset classification
Total	1,530	3,459
Watch | Home equity lines of credit
Risk category of loans evaluated by internal asset classification
Total	0	0
Watch | Education
Risk category of loans evaluated by internal asset classification
Total	0	0
Watch | Other
Risk category of loans evaluated by internal asset classification
Total	0	0
Special Mention
Risk category of loans evaluated by internal asset classification
Total	412	1,421
Special Mention | Single family
Risk category of loans evaluated by internal asset classification
Total	0	118
Special Mention | Multifamily
Risk category of loans evaluated by internal asset classification
Total	0	445
Special Mention | Commercial real estate
Risk category of loans evaluated by internal asset classification
Total	412	858
Special Mention | Construction and land development
Risk category of loans evaluated by internal asset classification
Total	0	0
Special Mention | Commercial business
Risk category of loans evaluated by internal asset classification
Total	0	0
Special Mention | Home equity lines of credit
Risk category of loans evaluated by internal asset classification
Total	0	0
Special Mention | Education
Risk category of loans evaluated by internal asset classification
Total	0	0
Special Mention | Other
Risk category of loans evaluated by internal asset classification
Total	0	0
Substandard
Risk category of loans evaluated by internal asset classification
Total	3,163	4,120
Substandard | Single family
Risk category of loans evaluated by internal asset classification
Total	1,845	1,835
Substandard | Multifamily
Risk category of loans evaluated by internal asset classification
Total	155	160
Substandard | Commercial real estate
Risk category of loans evaluated by internal asset classification
Total	801	1,827
Substandard | Construction and land development
Risk category of loans evaluated by internal asset classification
Total	0	5
Substandard | Commercial business
Risk category of loans evaluated by internal asset classification
Total	123	104
Substandard | Home equity lines of credit
Risk category of loans evaluated by internal asset classification
Total	239	187
Substandard | Education
Risk category of loans evaluated by internal asset classification
Total	0	0
Substandard | Other
Risk category of loans evaluated by internal asset classification
Total	0	2
Doubtful
Risk category of loans evaluated by internal asset classification
Total	0	0
Doubtful | Single family
Risk category of loans evaluated by internal asset classification
Total	0	0
Doubtful | Multifamily
Risk category of loans evaluated by internal asset classification
Total	0	0
Doubtful | Commercial real estate
Risk category of loans evaluated by internal asset classification
Total	0	0
Doubtful | Construction and land development
Risk category of loans evaluated by internal asset classification
Total	0	0
Doubtful | Commercial business
Risk category of loans evaluated by internal asset classification
Total	0	0
Doubtful | Home equity lines of credit
Risk category of loans evaluated by internal asset classification
Total	0	0
Doubtful | Education
Risk category of loans evaluated by internal asset classification
Total	0	0
Doubtful | Other
Risk category of loans evaluated by internal asset classification
Total	$ 0	$ 0

Loans (Details 4)

Loans (Details 4) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Sep. 30, 2014	Jun. 30, 2014
Allowance for loan losses
Balance, beginning	$ 4,483	$ 3,898	$ 4,072	$ 4,266
Provision for loan losses	150	0	800	350
Loans charge-off	(105)	(243)	(391)	(1,104)
Recoveries	8	384	55	527
Balance, ending	4,536	4,039	4,536	4,039
Period-ended amount allocated for:
Individually evaluated for impairment					$ 96		$ 172
Collectively evaluated for impairment					4,440		3,867
Ending Balance	4,483	3,898	4,072	4,266	4,536	$ 4,072	4,039
Loans:
Individually evaluated for impairment					3,657		4,989
Collectively evaluated for impairment					487,722		380,063
Total Loans					491,379	421,181	385,052
Real Estate
Loans:
Total Loans					432,353	363,216
Single family
Allowance for loan losses
Balance, beginning	1,064	1,413	1,072	1,873
Provision for loan losses	7	59	196	(58)
Loans charge-off	(28)	(237)	(236)	(679)
Recoveries	1	26	12	125
Balance, ending	1,044	1,261	1,044	1,261
Period-ended amount allocated for:
Individually evaluated for impairment					40		113
Collectively evaluated for impairment					1,004		1,148
Ending Balance	1,064	1,413	1,072	1,873	1,044	1,072	1,261
Loans:
Individually evaluated for impairment					1,578		1,821
Collectively evaluated for impairment					149,951		131,635
Total Loans					151,529	135,337	133,456
Multifamily
Allowance for loan losses
Balance, beginning	1,025	107	757	165
Provision for loan losses	22	690	290	628
Loans charge-off	0	0	0	0
Recoveries	0	0	0	4
Balance, ending	1,047	797	1,047	797
Period-ended amount allocated for:
Individually evaluated for impairment					0		0
Collectively evaluated for impairment					1,047		797
Ending Balance	1,025	107	757	165	1,047	757	797
Loans:
Individually evaluated for impairment					1,853		2,572
Collectively evaluated for impairment					97,097		69,179
Total Loans					98,950	76,396	71,751
Commercial real estate
Allowance for loan losses
Balance, beginning	1,507	1,747	1,412	1,501
Provision for loan losses	45	(451)	184	15
Loans charge-off	(53)	0	(115)	(232)
Recoveries	1	4	19	16
Balance, ending	1,500	1,300	1,500	1,300
Period-ended amount allocated for:
Individually evaluated for impairment					0		0
Collectively evaluated for impairment					1,500		1,300
Ending Balance	1,507	1,747	1,412	1,501	1,500	1,412	1,300
Loans:
Individually evaluated for impairment					0		469
Collectively evaluated for impairment					158,861		118,960
Total Loans					158,861	135,121	119,429
Construction and land development
Allowance for loan losses
Balance, beginning	361	252	301	374
Provision for loan losses	7	32	67	(90)
Loans charge-off	0	0	0	0
Recoveries	0	10	0	10
Balance, ending	368	294	368	294
Period-ended amount allocated for:
Individually evaluated for impairment					0		0
Collectively evaluated for impairment					368		294
Ending Balance	361	252	301	374	368	301	294
Loans:
Individually evaluated for impairment					0		0
Collectively evaluated for impairment					23,013		16,035
Total Loans					23,013	16,362	16,035
Commercial business
Allowance for loan losses
Balance, beginning	415	279	454	211
Provision for loan losses	37	8	1	210
Loans charge-off	0	0	(14)	(159)
Recoveries	4	9	15	34
Balance, ending	456	296	456	296
Period-ended amount allocated for:
Individually evaluated for impairment					0		0
Collectively evaluated for impairment					456		296
Ending Balance	415	279	454	211	456	454	296
Loans:
Individually evaluated for impairment					0		0
Collectively evaluated for impairment					39,863		24,703
Total Loans					39,863	37,675	24,703
Consumer and other
Allowance for loan losses
Balance, beginning	111	100	76	142
Provision for loan losses	32	(338)	62	(355)
Loans charge-off	(24)	(6)	(26)	(34)
Recoveries	2	335	9	338
Balance, ending	121	91	121	91
Period-ended amount allocated for:
Individually evaluated for impairment					56		59
Collectively evaluated for impairment					65		32
Ending Balance	$ 111	$ 100	$ 76	$ 142	121	76	91
Loans:
Individually evaluated for impairment					226		127
Collectively evaluated for impairment					18,937		19,551
Total Loans					$ 19,163	$ 20,290	$ 19,678

Loans (Details 5)

Loans (Details 5) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Unpaid Principal Balance
Total	$ 3,960	$ 6,309	$ 3,960	$ 6,309
Recorded Investment
Total	3,657	4,989	3,657	4,989
Allowance for Loan Losses Allocated
With an allowance recorded	96	172	96	172
Average Recorded Investment
Total	4,291	6,493	4,353	7,763
Interest Income Recognized
Total	38	43	109	130
Single family
Unpaid Principal Balance
With no related allowance recorded	1,376	1,685	1,376	1,685
With an allowance recorded	315	1,017	315	1,017
Recorded Investment
With no related allowance recorded	1,263	1,136	1,263	1,136
With an allowance recorded	315	685	315	685
Allowance for Loan Losses Allocated
With an allowance recorded	40	113	40	113
Average Recorded Investment
With no related allowance recorded	1,315	1,735	1,298	1,867
With an allowance recorded	316	547	336	554
Interest Income Recognized
With no related allowance	13	5	36	17
With related allowance	4	1	11	1
Multifamily
Unpaid Principal Balance
With no related allowance recorded	1,941	2,871	1,941	2,871
With an allowance recorded	0	0	0	0
Recorded Investment
With no related allowance recorded	1,853	2,572	1,853	2,572
With an allowance recorded	0	0	0	0
Allowance for Loan Losses Allocated
With an allowance recorded	0	0	0	0
Average Recorded Investment
With no related allowance recorded	1,864	2,792	1,884	3,422
With an allowance recorded	0	0	0	85
Interest Income Recognized
With no related allowance	20	28	60	85
With related allowance	0	0	0	0
Commercial real estate
Unpaid Principal Balance
With no related allowance recorded	0	502	0	502
With an allowance recorded	0	0	0	0
Recorded Investment
With no related allowance recorded	0	469	0	469
With an allowance recorded	0	0	0	0
Allowance for Loan Losses Allocated
With an allowance recorded	0	0	0	0
Average Recorded Investment
With no related allowance recorded	543	1,266	527	1,520
With an allowance recorded	0	0	41	95
Interest Income Recognized
With no related allowance	0	8	0	25
With related allowance	0	0	0	0
Construction and land development
Unpaid Principal Balance
With no related allowance recorded	0	0	0	0
With an allowance recorded	0	0	0	0
Recorded Investment
With no related allowance recorded	0	0	0	0
With an allowance recorded	0	0	0	0
Allowance for Loan Losses Allocated
With an allowance recorded	0	0	0	0
Average Recorded Investment
With no related allowance recorded	0	0	0	0
With an allowance recorded	0	0	0	48
Interest Income Recognized
With no related allowance	0	0	0	0
With related allowance	0	0	0	0
Commercial business
Unpaid Principal Balance
With no related allowance recorded	0	0	0	0
With an allowance recorded	0	0	0	0
Recorded Investment
With no related allowance recorded	0	0	0	0
With an allowance recorded	0	0	0	0
Allowance for Loan Losses Allocated
With an allowance recorded	0	0	0	0
Average Recorded Investment
With no related allowance recorded	0	0	0	0
With an allowance recorded	0	0	0	0
Interest Income Recognized
With no related allowance	0	0	0	0
With related allowance	0	0	0	0
Consumer and other
Unpaid Principal Balance
With no related allowance recorded	272	175	272	175
With an allowance recorded	56	59	56	59
Recorded Investment
With no related allowance recorded	170	68	170	68
With an allowance recorded	56	59	56	59
Allowance for Loan Losses Allocated
With an allowance recorded	56	59	56	59
Average Recorded Investment
With no related allowance recorded	196	93	210	112
With an allowance recorded	57	60	57	60
Interest Income Recognized
With no related allowance	0	0	0	0
With related allowance	$ 1	$ 1	$ 2	$ 2

Loans (Details 6)

Loans (Details 6) - Receivable Type [Domain]	3 Months Ended		9 Months Ended
	Jun. 30, 2015USD ($)contract	Jun. 30, 2014USD ($)contract	Jun. 30, 2015USD ($)contract	Jun. 30, 2014USD ($)contract	Sep. 30, 2014USD ($)
Troubled debt restructured loans
Troubled debt restructurings - accrual	$ 0		$ 0		$ 0
Modified Trouble Debt Restructurings
Number of Modifications | contract	0	1	0	2
Unpaid Principal Balance (at end of period)	$ 0	$ 320,000	$ 0	$ 407,000
Interest Rate Reduction
Other		320,000		407,000
Total	$ 0	$ 320,000	$ 0	$ 407,000
Number of re-defaults of TDR | contract	0	0	0	0
Past due loans
Troubled debt restructured loans
Troubled debt restructurings - accrual	$ 2,880,000		$ 2,880,000		3,507,000
Troubled debt restructurings - nonaccrual	0		0		195,000
Troubled debt restructurings	$ 2,880,000		$ 2,880,000		$ 3,702,000

Loans Loans (Details 7)

Loans Loans (Details 7) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2015	Sep. 30, 2014
Loans and Leases Receivable, Related Parties [Roll Forward]
Loans outstanding to officers, employees, directors, and their associates	$ 5,682	$ 4,653
Loans and Leases Receivable, Related Parties, Additions	1,629
Loans and Leases Receivable, Related Parties, Amount Drawn Upon During Period	166
Loans and Leases Receivable, Related Parties, Collections	$ (766)

Deposits (Details)

Deposits (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Sep. 30, 2014
Negotiable order for withdrawal accounts:
Noninterest bearing	$ 89,862	$ 77,790
Interest bearing	133,673	132,925
Gross total	223,535	210,715
Passbook and Statement Savings	126,758	122,227
Variable Rate Money Market Accounts	50,424	25,615
Certificates of Deposit	121,314	96,371
Deposits	$ 522,031	$ 454,928
Negotiable order for withdrawal accounts:
Noninterest bearing (as a percent)	17.21%	17.10%
Interest bearing (as a percent)	25.61%	29.22%
Gross total (as a percent)	42.82%	46.32%
Passbook and Statement Savings (as a percent)	24.28%	26.87%
Variable Rate Money Market Accounts (as a percent)	9.66%	5.63%
Certificates of Deposit (as a percent)	23.24%	21.18%
Deposits (as a percent)	100.00%	100.00%
Certificates of Deposit over one hundred thousand dollars	$ 63,257	$ 34,853
Certificates of Deposit over two hundred fifty thousand dollars	$ 8,270	$ 5,602

Regulatory Capital (Details)

Regulatory Capital (Details) - Westbury Bank - USD ($) $ in Thousands	Jun. 30, 2015	Sep. 30, 2014
Total capital (to risk-weighted assets), Amount
Actual	$ 68,635	$ 65,181
For Capital Adequacy Purposes	40,673	32,228
To be Well Capitalized Under Prompt Corrective Action Provisions	$ 50,841	$ 40,285
Total capital (to risk-weighted assets), Ratio
Actual (as a percent)	13.50%	16.18%
For Capital Adequacy Purposes (as a percent)	8.00%	8.00%
To be Well Capitalized Under Prompt Corrective Action Provisions (as a percent)	10.00%	10.00%
Tier 1 capital (to risk-weighted assets), Amount
Actual	$ 64,099	$ 61,109
For Capital Adequacy Purposes	30,499	16,113
To be Well Capitalized Under Prompt Corrective Action Provisions	$ 40,666	$ 24,170
Tier 1 capital (to risk-weighted assets), Ratio
Actual (as a percent)	12.61%	15.17%
For Capital Adequacy Purposes (as a percent)	6.00%	4.00%
To be Well Capitalized Under Prompt Corrective Action Provisions (as a percent)	8.00%	6.00%
CETI capital (to risk-weighted assets), Amount
Actual	$ 64,099
For Capital Adequacy Purposes	22,874
To Be Well Capitalized Under Prompt Corrective Action Provisions	$ 33,041
CETI capital (to risk-weighted assets), Ratio
Actual (as a percent)	12.61%
For Capital Adequacy Purposes (as a percent)	4.50%
To Be Well Capitalized Under Prompt Corrective Action Provisions (as a percent)	6.50%
Tier 1 capital (to adjusted total assets), Amount
Actual	$ 64,099	$ 61,109
For Capital Adequacy Purposes	24,990	21,962
To be Well Capitalized Under Prompt Corrective Action Provisions	$ 31,237	$ 27,452
Tier 1 capital (to adjusted total assets), Ratio
Actual (as a percent)	10.26%	11.13%
For Capital Adequacy Purposes (as a percent)	4.00%	4.00%
To be Well Capitalized Under Prompt Corrective Action Provisions (as a percent)	5.00%	5.00%

Regulatory Capital- Stockholder

Regulatory Capital- Stockholders' equity of the Bank (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Jun. 30, 2015	Sep. 30, 2014	Jun. 30, 2014	Sep. 30, 2013
Regulatory Capital
Stockholders' equity	$ 77,001	$ 86,487	$ 88,695	$ 90,602
Less: Disallowed servicing assets	(1,359)	(1,624)
Westbury Bank
Regulatory Capital
Stockholders' equity	69,093	67,529
Less: Disallowed servicing assets	0	(162)
Unrealized (gain) loss on securities	84	33
Investment in subsidiary	3,296	3,296
Disallowed deferred tax assets	(1,782)	(2,995)
Tier 1 and tangible capital	64,099	61,109
Plus: Allowable general valuation allowances	4,536	4,072
Actual	$ 68,635	$ 65,181

Commitments (Details)

Commitments (Details) - USD ($)	9 Months Ended
	Jun. 30, 2015	Sep. 30, 2014
Financial Instruments with Off-Balance Sheet Risk
Liabilities recorded for company's potential obligations	$ 0	$ 0
Fixed rate commitments to extend mortgage credit
Financial Instruments with Off-Balance Sheet Risk
Financial instruments whose contract amounts represent credit risk	3,078,000	960,000
Adjustable rate commitments to extend mortgage credit
Financial Instruments with Off-Balance Sheet Risk
Financial instruments whose contract amounts represent credit risk	1,488,000	3,339,000
Unused commercial loan and home equity lines of credit
Financial Instruments with Off-Balance Sheet Risk
Financial instruments whose contract amounts represent credit risk	87,762,000	61,325,000
Standby letters of credit
Financial Instruments with Off-Balance Sheet Risk
Financial instruments whose contract amounts represent credit risk	$ 947,000	422,000
Maximum period of letters of credit primarily issued to support public and private borrowing arrangements	1 year
Commitment to sell loans
Financial Instruments with Off-Balance Sheet Risk
Financial instruments whose contract amounts represent credit risk	$ 1,504,000	$ 326,000

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2015	Sep. 30, 2014
Assets
Securities available-for-sale	$ 79,450	$ 90,346
U.S. Government and agency securities
Assets
Securities available-for-sale	25	5,179
U.S. Government agency residential mortgage-backed securities
Assets
Securities available-for-sale	40,573	37,196
U.S. Government agency collateralized mortgage obligations
Assets
Securities available-for-sale	2,147	3,432
U.S. Government agency commercial mortgage-backed securities
Assets
Securities available-for-sale	11,761	10,752
Municipal securities
Assets
Securities available-for-sale	24,944	33,787
Quoted Prices in Active Markets for Identical Assets (Level 1)
Liabilities
Derivatives	$ 0	0
Significant Other Observable Inputs (Level 2)
Assets and liabilities measured at fair value
Period of U.S. Treasury rate	10 years
Assets
Securities available-for-sale	$ 79,450	90,346
Derivatives	133	87
Liabilities
Derivatives	133	87
Significant Other Unobservable Inputs (Level 3)
Liabilities
Derivatives	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Securities available-for-sale	0	0
Derivatives	0	0
Liabilities
Derivatives	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Government and agency securities
Assets
Securities available-for-sale	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Government agency residential mortgage-backed securities
Assets
Securities available-for-sale	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Government agency collateralized mortgage obligations
Assets
Securities available-for-sale	0	0
Recurring basis | Significant Other Observable Inputs (Level 2)
Assets
Securities available-for-sale	79,450	90,346
Derivatives	133	87
Liabilities
Derivatives	133	87
Recurring basis | Significant Other Observable Inputs (Level 2) | U.S. Government and agency securities
Assets
Securities available-for-sale	25	5,179
Recurring basis | Significant Other Observable Inputs (Level 2) | U.S. Government agency residential mortgage-backed securities
Assets
Securities available-for-sale	40,573	37,196
Recurring basis | Significant Other Observable Inputs (Level 2) | U.S. Government agency collateralized mortgage obligations
Assets
Securities available-for-sale	2,147	3,432
Recurring basis | Significant Other Observable Inputs (Level 2) | U.S. Government agency commercial mortgage-backed securities
Assets
Securities available-for-sale	11,761	10,752
Recurring basis | Significant Other Observable Inputs (Level 2) | Municipal securities
Assets
Securities available-for-sale	24,944	33,787
Recurring basis | Significant Other Unobservable Inputs (Level 3)
Assets
Securities available-for-sale	0	0
Derivatives	0	0
Liabilities
Derivatives	0	0
Recurring basis | Significant Other Unobservable Inputs (Level 3) | U.S. Government and agency securities
Assets
Securities available-for-sale	0	0
Recurring basis | Significant Other Unobservable Inputs (Level 3) | U.S. Government agency residential mortgage-backed securities
Assets
Securities available-for-sale	0	0
Recurring basis | Significant Other Unobservable Inputs (Level 3) | U.S. Government agency collateralized mortgage obligations
Assets
Securities available-for-sale	0	0
Total
Assets
Securities available-for-sale	79,450	90,346
Derivatives	133	87
Liabilities
Derivatives	133	87
Total | U.S. Government and agency securities
Assets
Securities available-for-sale		5,179
Total | U.S. Government agency residential mortgage-backed securities
Assets
Securities available-for-sale		37,196
Total | U.S. Government agency collateralized mortgage obligations
Assets
Securities available-for-sale		3,432
Total | U.S. Government agency commercial mortgage-backed securities
Assets
Securities available-for-sale		10,752
Total | Municipal securities
Assets
Securities available-for-sale		$ 33,787
Total | Recurring basis
Assets
Securities available-for-sale	79,450
Derivatives	133
Liabilities
Derivatives	133
Total | Recurring basis | U.S. Government and agency securities
Assets
Securities available-for-sale	25
Total | Recurring basis | U.S. Government agency residential mortgage-backed securities
Assets
Securities available-for-sale	40,573
Total | Recurring basis | U.S. Government agency collateralized mortgage obligations
Assets
Securities available-for-sale	2,147
Total | Recurring basis | U.S. Government agency commercial mortgage-backed securities
Assets
Securities available-for-sale	11,761
Total | Recurring basis | Municipal securities
Assets
Securities available-for-sale	$ 24,944

Fair Value Measurements (Deta46

Fair Value Measurements (Details 2) - USD ($) $ in Thousands	Jun. 30, 2015	Sep. 30, 2014	Jun. 30, 2014
Assets measured at fair value on a nonrecurring basis
Impaired loans, valuation allowance	$ 96		$ 172
Foreclosed real estate	1,411	$ 2,355
Significant Other Unobservable Inputs (Level 3)
Assets measured at fair value on a nonrecurring basis
Mortgage servicing rights	1,359	1,624
Carrying Amount
Assets measured at fair value on a nonrecurring basis
Mortgage servicing rights	1,359	1,624
Total
Assets measured at fair value on a nonrecurring basis
Mortgage servicing rights	1,359	1,624
Nonrecurring Basis | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets measured at fair value on a nonrecurring basis
Impaired loans	0	0
Foreclosed real estate	0	0
Mortgage servicing rights	0	0
Nonrecurring Basis | Significant Other Observable Inputs (Level 2)
Assets measured at fair value on a nonrecurring basis
Impaired loans	0	0
Foreclosed real estate	0	0
Mortgage servicing rights	0	0
Nonrecurring Basis | Significant Other Unobservable Inputs (Level 3)
Assets measured at fair value on a nonrecurring basis
Impaired loans, valuation allowance	96	136
Mortgage servicing rights, valuation allowance	105	160
Impaired loans	275	405
Foreclosed real estate	1,411	2,355
Mortgage servicing rights	1,359	1,624
Nonrecurring Basis | Carrying Amount | Significant Other Unobservable Inputs (Level 3)
Assets measured at fair value on a nonrecurring basis
Impaired loans	371	541
Mortgage servicing rights	1,464	1,784
Nonrecurring Basis | Total
Assets measured at fair value on a nonrecurring basis
Impaired loans	275	405
Foreclosed real estate	1,411	2,355
Mortgage servicing rights	$ 1,359	$ 1,624

Fair Value Measurements (Deta47

Fair Value Measurements (Details 3) - USD ($) $ in Thousands	Jun. 30, 2015	Sep. 30, 2014
Financial assets:
Securities available-for-sale	$ 79,450	$ 90,346
Securities held to maturity	2,459	0
Federal Home Loan Bank stock	3,350	2,670
Financial liabilities:
Advance payments by borrowers for property taxes and insurance	3,734	5,869
Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial assets:
Cash and cash equivalents	15,964	17,608
Securities held to maturity	0
Accrued interest receivable	1,897	1,784
Financial liabilities:
Deposits	89,862	77,790
Advances from Federal Home Loan Bank	0	0
Advance payments by borrowers for property taxes and insurance	3,734	5,869
Accrued interest payable	5	3
Derivative liability	0	0
Significant Other Observable Inputs (Level 2)
Financial assets:
Securities available-for-sale	79,450	90,346
Securities held to maturity	2,479
Loans held for sale, net	1,504	326
Derivative asset	133	87
Financial liabilities:
Deposits	0	0
Advances from Federal Home Loan Bank	22,000	17,000
Advance payments by borrowers for property taxes and insurance	0	0
Accrued interest payable	0	0
Derivative liability	133	87
Significant Other Unobservable Inputs (Level 3)
Financial assets:
Securities held to maturity	0
Loans, net	486,828	415,857
Federal Home Loan Bank stock	3,350	2,670
Mortgage servicing rights	1,359	1,624
Financial liabilities:
Deposits	409,998	364,552
Advances from Federal Home Loan Bank	0	0
Advance payments by borrowers for property taxes and insurance	0	0
Accrued interest payable	0	0
Derivative liability	0	0
Carrying Amount
Financial assets:
Cash and cash equivalents	15,964	17,608
Securities available-for-sale	79,450	90,346
Securities held to maturity	2,459
Loans, net	486,497	416,874
Loans held for sale, net	1,504	326
Federal Home Loan Bank stock	3,350	2,670
Mortgage servicing rights	1,359	1,624
Accrued interest receivable	1,897	1,784
Derivative asset	133	87
Financial liabilities:
Deposits	522,031	454,928
Advances from Federal Home Loan Bank	22,000	17,000
Advance payments by borrowers for property taxes and insurance	3,734	5,869
Accrued interest payable	5	3
Derivative liability	133	87
Estimated Fair Value
Financial assets:
Cash and cash equivalents	15,964	17,608
Securities available-for-sale	79,450	90,346
Securities held to maturity	2,479
Loans, net	486,828	415,857
Loans held for sale, net	1,504	326
Federal Home Loan Bank stock	3,350	2,670
Mortgage servicing rights	1,359	1,624
Accrued interest receivable	1,897	1,784
Derivative asset	133	87
Financial liabilities:
Deposits	499,860	442,342
Advances from Federal Home Loan Bank	22,000	17,000
Advance payments by borrowers for property taxes and insurance	3,734	5,869
Accrued interest payable	5	3
Derivative liability	$ 133	$ 87

Employee Stock Ownership Plan (

Employee Stock Ownership Plan (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Sep. 30, 2014	Apr. 11, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Employee Stock Ownership Plan (ESOP), Debt Structure, Indirect Loan, Amount						$ 4,100
employee stock ownership plan, price per share						$ 10
ESOP committed-to-be-released shares, during period	5,143		15,427
ESOP compensation expense	$ 90	$ 74	$ 288	$ 242
Allocated shares to active participants	34,892		34,892		20,570
Shares committed to be released	10,285		10,285		15,428
Unallocated shares	359,978		359,978		375,405
Total ESOP shares	405,155		405,155		411,403	411,403
Fair value of unallocated shares	$ 6,238		$ 6,238		$ 5,650

Compensation Equity Plans Cost

Compensation Equity Plans Cost of Share-based Payment Plans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Total cost of stock grant plan during the period	$ 154	$ 0	$ 464	$ 0
Total cost of stock option plan during the period	46	0	138	0
Total cost of share-based payment plans during the period	200	0	602	0
Amount of related income tax benefit recognized in income	$ 78	$ 0	$ 236	$ 0

Compensation Equity Plans Stock

Compensation Equity Plans Stock Option Activity (Details) - Jun. 30, 2015 - USD ($) $ / shares in Units, $ in Thousands	Total	Total
Number of Options
Options outstanding, beginning balance (shares)	326,224	326,224
Granted (shares)	83,425	83,425
Exercised (shares)	0	0
Expired or canceled (shares)	0	0
Forfeited (shares)	0	0
Options outstanding, ending balance (shares)	409,649	409,649
Options exercisable as of June 30, 2015 (shares)	65,244	65,244
Weighted Average Exercise Price
Options outstanding, beginning balance (in dollars per share)	$ 15.20	$ 15.20
Granted (in dollars per share)	17.35	17.35
Exercised (in dollars per share)	0	0
Expired or canceled (in dollars per share)	0	0
Forfeited (in dollars per share)	0	0
Options outstanding, ending balance (in dollars per share)	15.64	15.64
Options exercisable as of March 31, 2015 (in dollars per share)	$ 15.20	$ 15.20
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Outstanding, Weighted Average Remaining Contractual Term	9 years 2 months 12 days	9 years 2 months 12 days
Outstanding, Aggregate Intrinsic Value	$ 695	$ 695
Options Exercisable, Weighted Average Remaining Contractual Term	9 years
Options Exercisable, Aggregate Intrinsic Value	$ 139	$ 139

Compensation Equity Plans Assum

Compensation Equity Plans Assumptions (Details) - $ / shares	9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Risk-free interest rate	2.10%	2.10%
Expected volatility of Company's stock	7.44%	9.49%
Expected dividend yield	0.00%	0.00%
Expected life of options (years)	7 years 6 months	7 years 6 months
Weighted average fair value per option of options granted during the year	$ 2.95	$ 2.82

Compensation Equity Plans Restr

Compensation Equity Plans Restricted Shares (Details) - Jun. 30, 2015 - Restricted Shares and Units - $ / shares	Total	Total
Number of Shares
Shares Outstanding at September 30, 2014	203,665	203,665
Granted	0	0
Vested	(40,529)	(40,529)
Forfeited	(1,018)	(1,018)
Shares Outstanding at June 30, 2015	162,118	162,118
Weighted Average Grant Date Fair Value
Shares Outstanding at September 30, 2014 (in dollars per share)	$ 15.20	$ 15.20
Granted (in dollars per share)	0	0
Vested (in dollars per share)	15.20	15.20
Forfeited (in dollars per share)	15.20	15.20
Shares Outstanding at March 31, 2015 (in dollars per share)	$ 15.20	$ 15.20

Compensation Equity Plans Narra

Compensation Equity Plans Narrative (Details) - USD ($)	3 Months Ended	9 Months Ended
	Jun. 30, 2015	Jun. 30, 2015	Jun. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period, minimum		5 years
Vesting period, maximum		10 years
Restricted share vesting period		5 years
Intrinsic value of options exercised during the period	$ 703,000	$ 703,000
Compensation cost not yet recognized	$ 3,400,000	$ 3,400,000
Period for recognition		4 years 1 month
Restricted Shares and Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value of restricted shares vested during the period		$ 0
Westbury Bancorp Inc 2014 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized			509,162
Westbury Bancorp Inc 2014 Equity Incentive Plan | Restricted Shares and Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized			203,665
Number of shares available for grant-stock grants	0	0
Westbury Bancorp Inc 2014 Equity Incentive Plan | Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant-stock options	99,513	99,513

Condensed Parent Company Fina54

Condensed Parent Company Financial Information Balance Sheet (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Sep. 30, 2014	Jun. 30, 2014	Sep. 30, 2013
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and interest bearing deposits	$ 15,964	$ 17,608	$ 28,864	$ 47,665
Other assets	3,970	3,504
Total assets	629,380	568,695
Other liabilities	4,614	4,411
Stockholders' equity	77,001	86,487	$ 88,695	$ 90,602
Total liabilities and stockholders' equity	629,380	568,695
Parent Company
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and interest bearing deposits	1,697	6,878
Investments	439	6,590
Loan to ESOP	3,778	3,931
Investment in subsidiary	72,408	71,131
Other assets	2,338	1,674
Total assets	80,660	90,204
Other liabilities	344	115
Stockholders' equity	80,316	90,089
Total liabilities and stockholders' equity	$ 80,660	$ 90,204

Condensed Parent Company Fina55

Condensed Parent Company Financial Information Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Condensed Income Statements, Captions [Line Items]
Net income (loss)	$ 110	$ 69	$ 1,041	$ (1,662)
Parent Company
Condensed Income Statements, Captions [Line Items]
Interest and other income	35	90	161	231
Interest and other expense	199	157	548	605
Loss before income tax benefit and equity in undistributed net income of subsidiary	(164)	(67)	(387)	(374)
Income tax benefit	(46)	(22)	(100)	(115)
Loss before equity in undistributed net income (loss) of subsidiary	(118)	(45)	(287)	(259)
Equity in undistributed net income (loss) of subsidiary	228	114	1,328	(1,403)
Net income (loss)	$ 110	$ 69	$ 1,041	$ (1,662)

Condensed Parent Company Fina56

Condensed Parent Company Financial Information Statement of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net income (loss)	$ 110	$ 69	$ 1,041	$ (1,662)
Net change in other assets			(459)	288
Net cash used in operating activities			791	(914)
Net Cash Provided by (Used in) Investing Activities [Abstract]
Purchase of securities			(21,395)	(17,699)
Net cash provided by investing activities			(63,159)	(34,799)
Net Cash Provided by (Used in) Financing Activities [Abstract]
Repurchase of common stock			(11,379)	(1,587)
Net cash used in financing activities			60,724	16,912
Parent Company
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net income (loss)	110	69	1,041	(1,662)
Equity in undistributed net income (loss) of subsidiary	(228)	(114)	(1,328)	1,403
Net change in other liabilities			229	(12)
Net change in other assets			(48)	(25)
Net cash used in operating activities			(106)	(296)
Net Cash Provided by (Used in) Investing Activities [Abstract]
Purchase of securities			(728)	(1,850)
Sales and maturities of securities			6,879	3,110
Payments received on ESOP loan			153	183
Net cash provided by investing activities			6,304	1,443
Net Cash Provided by (Used in) Financing Activities [Abstract]
Repurchase of common stock			(11,379)	(1,587)
Net cash used in financing activities			(11,379)	(1,587)
Net decrease in cash			(5,181)	(440)
Beginning of period			6,878	9,271
End of period	$ 1,697	$ 8,831	$ 1,697	$ 8,831