Westbury Bancorp (WBBW) 10-Q24 Jan 172017 Q1 Quarterly reportFinancial data

Company Profile

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
Document and Entity Information - shares	Dec. 31, 2016	Jan. 24, 2017
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	Dec. 31, 2016
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		4,072,892
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q1

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Sep. 30, 2016
Assets
Cash and due from banks	$ 28,945	$ 19,125
Interest-earning deposits	13,051	10,488
Cash and cash equivalents	41,996	29,613
Securities available-for-sale	101,997	93,772
Securities held to maturity, at amortized cost ($2,316 and $2,392 fair value at December 31, 2016 and September 30, 2016, respectively)	2,293	2,293
Loans held for sale, at lower of cost or fair value	1,156	1,881
Loans, net of allowance for loan losses of $5,451 and $5,244 at December 31, 2016 and September 30, 2016, respectively	543,220	533,759
Federal Home Loan Bank stock, at cost	1,330	1,330
Foreclosed real estate	0	99
Office properties and equipment, net	15,508	15,410
Cash surrender value of bank-owned life insurance	14,347	14,233
Mortgage servicing rights	841	800
Deferred tax asset	6,210	5,425
Other assets	4,098	4,010
Total assets	732,996	702,625
Liabilities
Deposits	629,852	591,977
Long-term advances from Federal Home Loan Bank	20,000	20,000
Advance payments by borrowers for property taxes and insurance	550	5,455
Other liabilities	4,282	5,564
Total liabilities	654,684	622,996
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; 5,350,863 and 5,347,641 shares issued at December 31, 2016 and September 30, 2016, respectively	54	54
Additional paid-in capital	51,765	51,463
Retained earnings	52,932	52,185
Unearned Employee Stock Ownership Plan (ESOP) shares	(3,085)	(3,188)
Accumulated other comprehensive gain (loss)	(1,290)	561
Less common stock repurchased, 1,278,323 and 1,249,123 shares at cost, at December 31, 2016 and September 30, 2016, respectively	(22,064)	(21,446)
Total stockholders’ equity	78,312	79,629
Total liabilities and stockholders’ equity	$ 732,996	$ 702,625

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2016	Sep. 30, 2016
Statement of Financial Position [Abstract]
Securities held to maturity, fair value	$ 2,316	$ 2,392
Allowance for loan losses	$ 5,451	$ 5,244
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	5,350,863	5,347,641
Treasury stock, shares	1,278,323	1,249,123

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Interest and dividend income:
Loans	$ 5,396	$ 5,117
Investments - nontaxable	128	29
Investments - taxable	364	423
Interest bearing deposits	36	26
Total interest and dividend income	5,924	5,595
Interest expense:
Deposits	667	558
Short-term advances from the Federal Home Loan Bank	0	8
Long-term advances from the Federal Home Loan Bank	50	24
Total interest expense	717	590
Net interest income before provision for loan losses	5,207	5,005
Provision for loan losses	200	150
Net interest income after provision for loan losses	5,007	4,855
Noninterest income:
Service fees on deposit accounts	989	1,078
Gain on sales of loans, net	215	127
Servicing fee income, net of amortization and impairment	125	37
Insurance and securities sales commissions	43	73
Gain on sales of securities	4	2
Increase in cash surrender value of bank-owned life insurance	114	110
Rental income from real estate operations	103	113
Other income	75	131
Total noninterest income	1,668	1,671
Noninterest expenses:
Compensation and employee benefits	2,942	2,364
Occupancy, furniture and equipment	536	419
Data processing	806	747
Professional Fees	293	268
FDIC insurance premiums	102	104
Other expenses	840	949
Total noninterest expenses	5,519	4,851
Income before income tax expense	1,156	1,675
Income tax expense	409	636
Net income	$ 747	$ 1,039
Earnings per share:
Basic (in dollars per share)	$ 0.20	$ 0.27
Diluted (in dollars per share)	$ 0.20	$ 0.27

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 747	$ 1,039
Other comprehensive income, before tax:
Unrealized loss on available-for-sale securities	(3,042)	(969)
Reclassification adjustment for realized gains included in net income	(4)	(2)
Other comprehensive loss, before tax	(3,046)	(971)
Income tax benefit related to items of other comprehensive loss	1,195	381
Other comprehensive loss, net of tax	(1,851)	(590)
Comprehensive income (loss)	$ (1,104)	$ 449

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, 2015	$ 78,812	$ 0	$ 53	$ 50,145	$ 48,714	$ (3,548)	$ 352	$ (16,904)
Increase (Decrease) in Stockholders' Equity
Net income	1,039	0			1,039
Other comprehensive income (loss), net of tax	(590)						(590)
Exercise of 4,457 stock options	64		0	64
Repurchase of 27,994 and 55061 shares, respectively, of common stock	(506)							(506)
Stock based compensation expense	208			208
Allocation,or commitment to be allocated, of 5,142 shares by ESOP	91			40		51
Balance at Dec. 31, 2015	79,118	0	53	50,457	49,753	(3,497)	(238)	(17,410)
Balance at Sep. 30, 2016	79,629	0	54	51,463	52,185	(3,188)	561	(21,446)
Increase (Decrease) in Stockholders' Equity
Net income	747	0			747
Other comprehensive income (loss), net of tax	(1,851)						(1,851)
Exercise of 4,457 stock options	0
Repurchase of 27,994 and 55061 shares, respectively, of common stock	(618)							(618)
Stock based compensation expense	198			198
Allocation,or commitment to be allocated, of 5,142 shares by ESOP	207	0		104		103
Balance at Dec. 31, 2016	$ 78,312	$ 0	$ 54	$ 51,765	$ 52,932	$ (3,085)	$ (1,290)	$ (22,064)

Consolidated Statements of Cha7

Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - shares	3 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Statement of Stockholders' Equity [Abstract]
Number of shares allocated by ESOP	10,285	5,142
Exercised (shares)	0	4,298
Number of shares repurchased during period	29,200	25,913

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Cash Flows From Operating Activities
Net income	$ 747	$ 1,039
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	200	150
Depreciation and amortization	123	192
Depreciation on real estate held for investment	0	22
Net amortization of securities premiums and discounts	212	120
Amortization and impairment of mortgage servicing rights	(41)	74
Gain on sales of available-for-sale securities	(4)	(2)
Write-down of real estate held-for-sale	0	47
(Gain) loss on sale of foreclosed real estate	3	(20)
Write-down of foreclosed real estate	9	26
Loans originated for sale	(12,092)	(8,957)
Proceeds from sale of loans	13,032	8,542
Gain on sale of loans, net	(215)	(127)
ESOP compensation expense	207	91
Stock based compensation expense	198	208
Deferred income taxes	410	636
Increase in cash surrender value of life insurance	(114)	(110)
Net change in:
Other assets	(88)	(391)
Other liabilities and advance payments by borrowers for property taxes and insurance	(6,187)	(6,282)
Net cash used in operating activities	(3,600)	(4,742)
Cash Flows From Investing Activities
Purchases of securities available-for-sale	(15,226)	(12,375)
Proceeds from sales of securities available-for-sale	829	5,219
Proceeds from maturities, prepayments, and calls of securities available-for-sale	2,918	2,116
Net increase in loans	(9,661)	(3,270)
Purchase of bank-owned life insurance	0	(637)
Purchases of office properties and equipment	(221)	(57)
Proceeds from sales of real estate held-for-sale	0	27
Proceeds from sales of foreclosed real estate	87	109
Net cash used in investing activities	(21,274)	(8,868)
Cash Flows From Financing Activities
Net increase in deposits	37,875	25,124
Proceeds from long-term Federal Home Loan Bank advances	0	10,000
Net proceeds of short-term Federal Home Loan Bank advances	0	2,500
Exercise of 4,457 stock options	0	64
Repurchase of common stock	(618)	(506)
Net cash provided by financing activities	37,257	37,182
Net increase in cash and cash equivalents	12,383	23,572
Cash and cash equivalents at beginning of period	29,613	16,488
Cash and cash equivalents at end of period	41,996	40,060
Supplemental Disclosures of Cash Flow Information
Interest paid (including amounts credited to deposits)	$ 715	$ 589

Basis of Presentation

Basis of Presentation	3 Months Ended
Basis of Presentation	Dec. 31, 2016
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 December 31, 2016 and September 30, 2016 and the results of operations and cash flows for the interim periods ended December 31, 2016 and 2015. 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, 2016 filed with the U.S. Securities and Exchange Commission as part of Westbury Bancorp, Inc.’s Annual Report on Form 10-K for the year ended September 30, 2016. The Jumpstart Our Business Startups Act (the "JOBS Act"), which was signed into law on April 5, 2012, 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	3 Months Ended
Recent Accounting Developments	Dec. 31, 2016
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recent Accounting Developments	Recent Accounting Developments 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 beginning after December 15, 2018 and interim periods within annual periods beginning after December 15, 2019. Adoption by the Company is not expected to have a material impact on the consolidated financial statements and related disclosures. In January 2016, the FASB issued ASU 2016-01, Financial Instruments - Overall (Subtopic 825-10) - Recognition and Measurement of Financial Assets and Financial Liabilities. ASU 2016-01 is intended to enhance the reporting model for financial instruments to provide users of financial statements with more decision-useful information. ASU 2016-01 is effective for annual periods beginning after December 15, 2018, and interim periods within those annual periods beginning after December 15, 2019. Adoption by the Company is not expected to have a material impact on the consolidated financial statements and related disclosures. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842). ASU 2016-02 is intended to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. ASU 2016-02 is effective for annual periods and interim periods within those annual periods beginning after December 15, 2018. The Company is evaluating the potential impact of ASU 2016-02 on the consolidated financial statements and related disclosures. In March 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation (Topic 718). ASU 2016-09 is intended to simplify the accounting for share-based payment transactions, including income tax consequences, classification of awards as either assets or liabilities and classification on the statement of cash flows. ASU 2016-09 is effective for annual periods beginning after December 15, 2017 and interim periods within annual periods beginning after December 15, 2018. Early adoption is permitted. Adoption by the Company is not expected to have a material impact on the consolidated financial statements and related disclosures. In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326). ASU 2016-13 is intended to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity. ASU 2016-13 replaces the "incurred loss impairment methodology" with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. ASU 2016-13 is effective for annual periods and interim periods within those annual periods beginning after December 15, 2019. The Company is evaluating the potential impact of ASU 2016-13 on the consolidated financial statements and related disclosures.

Earnings Per Share

Earnings Per Share	3 Months Ended
Earnings Per Share	Dec. 31, 2016
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 are entitled to 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 December 31, 2016 2015 Net income $ 747 $ 1,039 Basic potential common shares: Weighted average shares outstanding 3,976,765 4,166,780 Weighted average unallocated ESOP shares (315,414 ) (353,122 ) Basic weighted average shares outstanding 3,661,351 3,813,658 Dilutive effect of equity awards 78,082 30,274 Diluted weighted average shares outstanding 3,739,433 3,843,932 Basic income per share $ 0.20 $ 0.27 Diluted income per share $ 0.20 $ 0.27

Investment Securitites

Investment Securitites	3 Months Ended
Investment Securitites	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities The amortized cost and fair value of investment securities are summarized as follows: December 31, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Available for Sale U.S. Government and agency securities $ 25 $ — $ — $ 25 U.S. Government agency residential mortgage-backed securities 45,355 94 (933 ) 44,516 U.S. Government agency collateralized mortgage obligations 4,088 3 (126 ) 3,965 U.S. Government agency commercial mortgage-backed securities 13,839 19 (48 ) 13,810 Municipal securities-tax exempt 28,068 4 (1,079 ) 26,993 Municipal securities-taxable 12,745 29 (86 ) 12,688 Total Available for Sale 104,120 149 (2,272 ) 101,997 Held to Maturity Municipal securities-tax exempt 2,293 25 (2 ) 2,316 Total Investment Securities $ 106,413 $ 174 $ (2,274 ) $ 104,313 September 30, 2016 Amortized Gross Gross Fair Available for Sale U.S. Government and agency securities $ 24 $ 1 $ — $ 25 U.S. Government agency residential mortgage-backed securities 40,289 504 (43 ) 40,750 U.S. Government agency collateralized mortgage obligations 2,674 24 (18 ) 2,680 U.S. Government agency commercial mortgage-backed securities 11,376 150 — 11,526 Municipal securities-tax exempt 25,730 51 (99 ) 25,682 Municipal securities-taxable 12,756 358 (5 ) 13,109 Total Available for Sale 92,849 1,088 (165 ) 93,772 Held to Maturity Municipal securities-tax exempt 2,293 99 — 2,392 Total Investment Securities $ 95,142 $ 1,187 $ (165 ) $ 96,164 The amortized cost and fair value of investment securities, by contractual maturity, at December 31, 2016 are shown in the following table. Actual maturities differ from contractual maturities for mortgage-backed securities and collateralized mortgage obligations 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. December 31, 2016 Amortized Cost Fair Value Available for sale: Due in one year or less $ 563 $ 564 Due after one year through five years 12,880 12,766 Due after five years through ten years 21,607 20,830 Due after ten years 5,788 5,546 U.S. Government agency residential mortgage-backed securities 45,355 44,516 U.S. Government agency collateralized mortgage obligations 4,088 3,965 U.S. Government agency commercial mortgage-backed securities 13,839 13,810 104,120 101,997 Held to maturity: Due in one year or less 168 168 Due after one year through five years 703 701 Due after five years through ten years 982 999 Due after ten years 440 448 2,293 2,316 Total $ 106,413 $ 104,313 Proceeds from sales of securities available for sale during the three months ended December 31, 2016 and 2015, were $829 and $5,219 , respectively. Gross realized gains, during the three months ended December 31, 2016 and 2015, on these sales amounted to $4 and $12 , respectively. Gross realized losses on these sales were $0 and $10 , during the three months ended December 31, 2016 and 2015, respectively. Securities with carrying values of $28,434 and $24,364 at December 31, 2016 and September 30, 2016, respectively, were pledged for purposes required or permitted by law. 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: December 31, 2016 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 34,517 (870 ) 2,868 (63 ) 37,385 (933 ) U.S. Government agency collateralized mortgage obligations 2,511 (91 ) 523 (35 ) 3,034 (126 ) U.S Government agency commercial mortgage-backed securities 9,965 (48 ) — — 9,965 (48 ) Municipal securities-tax exempt 26,382 (1,079 ) — — 26,382 (1,079 ) Municipal securities-taxable 8,658 (86 ) — — 8,658 (86 ) Total Available for Sale $ 82,033 $ (2,174 ) $ 3,391 $ (98 ) $ 85,424 $ (2,272 ) Held to Maturity Municipal securities-tax exempt 688 (2 ) — — 688 (2 ) Total Investment Securities $ 82,721 $ (2,176 ) $ 3,391 $ (98 ) $ 86,112 $ (2,274 ) September 30, 2016 Less than 12 Months 12 Months or Longer Total Fair Unrealized Fair Unrealized Fair Unrealized U.S. Government and agency securities $ — $ — $ — $ — $ — $ — U.S. Government agency residential mortgage-backed securities 2,726 (5 ) 3,020 (38 ) 5,746 (43 ) U.S. Government agency collateralized mortgage obligations — — 576 (18 ) 576 (18 ) U.S. Government agency commercial mortgage-backed securities — — — — — — Municipal securities-tax exempt 18,314 (99 ) — — 18,314 (99 ) Municipal securities-taxable 550 (5 ) — — 550 (5 ) Total Available for Sale $ 21,590 $ (109 ) $ 3,596 $ (56 ) $ 25,186 $ (165 ) Held to Maturity Municipal securities-tax exempt — — — — — — Total Investment Securities $ 21,590 $ (109 ) $ 3,596 $ (56 ) $ 25,186 $ (165 ) At December 31, 2016, the investment portfolio included 5 securities available-for-sale which had been in an unrealized loss position for greater than twelve months and 148 securities available-for-sale and 4 securities held-to-maturity, which had been in an unrealized loss position for less than twelve months. At September 30, 2016, the investment portfolio included 5 securities available-for-sale, which had been in an unrealized loss position for greater than twelve months, and 58 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. In addition, the Company does not intend to sell these investment securities for a period of time sufficient to allow for anticipated recovery. The Company does not have any current requirement to sell its investment in the issuer prior to any anticipated recovery in fair value.

Loans

Loans	3 Months Ended
Loans	Dec. 31, 2016
Loans and Leases Receivable Disclosure [Abstract]
Loans	Loans A summary of the balances of loans as of the dates indicated follows: December 31, 2016 September 30, 2016 Real estate: Single family $ 152,391 $ 158,541 Multifamily 115,946 123,623 Commercial real estate non-owner occupied 127,574 117,971 Commercial real estate owner occupied 69,973 63,108 Construction and land development 19,195 16,230 Total real estate 485,079 479,473 Commercial business 45,025 40,836 Consumer: Home equity lines of credit 14,906 14,969 Education 3,280 3,401 Other 480 462 Total consumer 18,666 18,832 Total loans 548,770 539,141 Less: Net deferred loan fees 99 138 Allowance for loan losses 5,451 5,244 Net loans $ 543,220 $ 533,759 The following tables present the contractual aging of the Company's recorded investment in past due loans by class of loans as of December 31, 2016 and September 30, 2016: December 31, 2016 Current 30-59 Days Past Due 60-89 Days Past Due Loans Past or More Total Single family $ 151,010 $ 655 $ 400 $ 326 $ 152,391 Multifamily 115,930 16 — — 115,946 Commercial real estate non-owner occupied 127,574 — — — 127,574 Commercial real estate owner occupied 69,973 — — — 69,973 Construction and land development 19,195 — — — 19,195 Commercial business 45,025 — — — 45,025 Consumer and other: Home equity lines of credit 14,879 — — 27 14,906 Education 3,023 107 12 138 3,280 Other 480 — — — 480 $ 547,089 $ 778 $ 412 $ 491 $ 548,770 September 30, 2016 Current 30-59 Days Past Due 60-89 Days Past Due Loans Past or More Total Single family $ 157,803 $ 239 $ 426 $ 73 $ 158,541 Multifamily 123,623 — — — 123,623 Commercial real estate non-owner occupied 117,971 — — — 117,971 Commercial real estate owner occupied 63,108 — — — 63,108 Construction and land development 16,230 — — — 16,230 Commercial business 40,836 — — — 40,836 Consumer and other: Home equity lines of credit 14,942 — — 27 14,969 Education 3,202 11 39 149 3,401 Other 462 — — — 462 $ 538,177 $ 250 $ 465 $ 249 $ 539,141 There were no loans past due ninety days or more and still accruing interest as of December 31, 2016 and September 30, 2016. The following table presents the recorded investment in nonaccrual loans by class of loans as of December 31, 2016 and September 30, 2016: December 31, 2016 September 30, 2016 Single family $ 518 $ 338 Multifamily — — Commercial real estate non-owner occupied — — Commercial real estate owner occupied — — Construction and land development — — Commercial business — — Consumer and other: Home equity lines of credit 35 36 Education 150 188 Other — — $ 703 $ 562 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 underlying loan agreements. The Company considers current financial information, historical payment experience, credit documentation, public information and current economic trends when catgorizing its loans into risk categories. Generally, all sizable credits receive a financial review no less than annually to monitor and adjust, if necessary, the credit’s risk profile. Credits classified as special mention, substandard or doubtful generally receive a review quarterly. 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 further 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. 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 of our loan portfolio as of December 31, 2016 and September 30, 2016: December 31, 2016 Pass Watch Special Mention Substandard Doubtful Total Single family $ 149,654 $ 739 $ — $ 1,998 $ — $ 152,391 Multifamily 114,224 1,722 — — — 115,946 Commercial real estate non-owner occupied 126,499 1,075 — — — 127,574 Commercial real estate owner occupied 66,899 2,238 — 836 — 69,973 Construction and land development 19,194 — — 1 — 19,195 Commercial business 35,607 8,884 — 534 — 45,025 Consumer and other: Home equity lines of credit 14,812 — — 94 — 14,906 Education 3,280 — — — — 3,280 Other 480 — — — — 480 Total $ 530,649 $ 14,658 $ — $ 3,463 $ — $ 548,770 September 30, 2016 Pass Watch Special Mention Substandard Doubtful Total Single family $ 156,042 $ 744 $ — $ 1,755 $ — $ 158,541 Multifamily 121,878 1,745 — — — 123,623 Commercial real estate non-owner occupied 116,880 695 396 — — 117,971 Commercial real estate owner occupied 59,993 3,115 — — — 63,108 Construction and land development 16,228 — — 2 — 16,230 Commercial business 31,677 8,945 214 — — 40,836 Consumer and other: Home equity lines of credit 14,874 — — 95 — 14,969 Education 3,401 — — — — 3,401 Other 462 — — — — 462 $ 521,435 $ 15,244 $ 610 $ 1,852 $ — $ 539,141 The following tables provide additional detail of the activity in the allowance for loan losses, by portfolio segment, for the three months ended December 31, 2016 and 2015: Three Months Ended December 31, 2016 Single Family Multifamily Commercial Real Estate - Non-owner Occupied Commercial Real Estate - Owner-Occupied Construction and Land Development Commercial Business Consumer and Other Total Allowance for loan losses: Beginning balance $ 980 $ 1,015 $ 1,519 $ 813 $ 344 $ 500 $ 73 $ 5,244 Provision for loan losses (57 ) (32 ) 65 129 59 39 (3 ) 200 Loans charged-off — — — — — — — — Recoveries — — — — — 5 2 7 Ending balance $ 923 $ 983 $ 1,584 $ 942 $ 403 $ 544 $ 72 $ 5,451 Period-ended amount allocated for: Individually evaluated for impairment $ 3 $ — $ — $ — $ — $ — $ 51 $ 54 Collectively evaluated for impairment 920 983 1,584 942 403 544 21 5,397 Ending balance $ 923 $ 983 $ 1,584 $ 942 $ 403 $ 544 $ 72 $ 5,451 Loans: Individually evaluated for impairment $ 1,447 $ 1,722 $ — $ — $ — $ — $ 86 $ 3,255 Collectively evaluated for impairment 150,944 114,224 127,574 69,973 19,195 45,025 18,580 545,515 Ending balance $ 152,391 $ 115,946 $ 127,574 $ 69,973 $ 19,195 $ 45,025 $ 18,666 $ 548,770 Three Months Ended Single Family Multifamily Commercial Real Estate - Non-owner Occupied Commercial Real Estate - Owner-Occupied Construction and Commercial Consumer Total Allowance for loan losses: Beginning balance $ 1,073 $ 1,013 $ 1,091 $ 513 $ 330 $ 498 $ 80 $ 4,598 Provision for loan losses (42 ) 327 31 16 14 (200 ) 4 150 Loans charged-off — — — — — — (10 ) (10 ) Recoveries — — — 1 — 4 4 9 Ending balance $ 1,031 $ 1,340 $ 1,122 $ 530 $ 344 $ 302 $ 78 $ 4,747 Period-ended amount allocated for: Individually evaluated for impairment $ 23 $ — $ — $ — $ — $ — $ 55 $ 78 Collectively evaluated for impairment 1,008 1,340 1,122 530 344 302 23 4,669 Ending balance $ 1,031 $ 1,340 $ 1,122 $ 530 $ 344 $ 302 $ 78 $ 4,747 Loans: Individually evaluated for impairment $ 1,605 $ 1,816 $ — $ — $ — $ — $ 94 $ 3,515 Collectively evaluated for impairment 149,385 116,873 112,482 51,033 17,163 31,866 19,277 498,079 Ending balance $ 150,990 $ 118,689 $ 112,482 $ 51,033 $ 17,163 $ 31,866 $ 19,371 $ 501,594 The following tables present additional detail of impaired loans, segregated by segment, as of and for the three month periods ended December 31, 2016 and 2015. 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 by loan category. The interest income recognized column represents all interest income on a loan reported on either a cash or accrual basis after the loan became impaired. Three months ended December 31, 2016 Unpaid Principal Balance Recorded Investment Allowance for Loan Losses Allocated Average Recorded Investment Interest Income Recognized With no related allowance recorded: Single family $ 1,309 $ 1,174 $ — $ 1,315 $ 12 Multifamily 1,764 1,722 — 1,734 18 Commercial real estate non-owner occupied — — — — — Commercial real estate owner occupied — — — — — Construction and land development 4 — — — — Commercial business — — — — — Consumer and other 114 35 — 36 — With an allowance recorded: Single family 273 273 3 137 5 Multifamily — — — — — Commercial real estate non-owner occupied — — — — — Commercial real estate owner occupied — — — — — Construction and land development — — — — — Commercial business — — — — — Consumer and other 51 51 51 52 1 $ 3,515 $ 3,255 $ 54 $ 3,274 $ 36 Three months ended December 31, 2015 Unpaid Principal Balance Recorded Investment Allowance for Loan Losses Allocated Average Recorded Investment Interest Income Recognized With no related allowance recorded: Single family $ 1,338 $ 1,194 $ — $ 1,189 $ 14 Multifamily 1,889 1,816 — 1,824 19 Commercial real estate non-owner occupied — — — — — Commercial real estate owner occupied — — — — — Construction and land development — — — — — Commercial business — — — — — Consumer and other 117 39 — 105 — With an allowance recorded: Single family 411 411 23 412 3 Multifamily — — — — — Commercial real estate non-owner occupied — — — — — Commercial real estate owner occupied — — — — — Construction and land development — — — — — Commercial business — — — — — Consumer and other 55 55 55 55 1 $ 3,810 $ 3,515 $ 78 $ 3,585 $ 37 The following is a summary of troubled debt restructured loans (TDRs) at December 31, 2016 and September 30, 2016: December 31, 2016 September 30, 2016 Troubled debt restructurings - accrual $ 2,719 $ 3,021 Troubled debt restructurings - nonaccrual — — $ 2,719 $ 3,021 Modifications of loan terms as a TDR are generally in the form of an extension of payment terms or a lowering of the interest rate, although occasionally the Bank has reduced the outstanding principal balance. There were no loans modified as a TDR during the three months ended December 31, 2016 and 2015. There were no re-defaults of TDRs that occurred during the three months ended December 31, 2016 and 2015. Certain of the Bank’s directors and executive officers are loan customers of the Bank. As of December 31, 2016 and September 30, 2016, loans of approximately $9,747 and $7,813 , respectively, were outstanding to such parties. These loans were made on substantially the same terms as those prevailing 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: Three Months Ended December 31, 2016 Balance, beginning $ 7,813 New loans originated 2,468 Draws on lines of credit 29 Principal repayments (563 ) Balance, ending $ 9,747

Deposits

Deposits	3 Months Ended
Deposits	Dec. 31, 2016
Deposits [Abstract]
Deposits	Deposits The following table presents the composition of deposits as of: December 31, 2016 September 30, 2016 Amount Percent Amount Percent Checking Accounts: Noninterest bearing $ 127,670 20.27 % $ 111,841 18.89 % Interest bearing 141,089 22.40 % 135,866 22.95 % 268,759 42.67 % 247,707 41.84 % Passbook and Statement Savings 134,214 21.31 % 133,155 22.50 % Variable Rate Money Market Accounts 71,309 11.32 % 64,593 10.91 % Certificates of Deposit 155,570 24.70 % 146,522 24.75 % $ 629,852 100.00 % $ 591,977 100.00 % Certificate accounts equal to or over one hundred thousand dollars totaled $97,293 and $89,588 as of December 31, 2016 and September 30, 2016, respectively. Of these amounts, $29,146 and $26,154 are equal to or greater than two hundred fifty thousand dollars as of December 31, 2016 and September 30, 2016, respectively.

Regulatory Capital

Regulatory Capital	3 Months Ended
Regulatory Capital	Dec. 31, 2016
Regulatory Capital Requirements [Abstract]
Regulatory Capital	Regulatory Capital The Bank is subject to capital requirements adopted by the Office of the Comptroller of the Currency ("OCC"). These requirements include a ratio for common equity Tier 1 ("CETI") capital, a leverage ratio and Tier 1 capital ratios and an additional capital conservation buffer over these required capital ratios. Failure to maintain the required capital conservation buffer limits 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 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. In addition to the minimum CETI, Tier 1 and total capital ratios, the Bank is required 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 is being phased in for the Bank beginning in January 2016 at 0.625% of risk-weighted assets and increases by the same amount 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%, a Tier 1 ratio of 8.0%, a total risk-based capital ratio of 10.0% and a leverage ratio of 5.0%. As of December 31, 2016 the Bank met all these requirements, including the full capital conservation buffer. The Bank’s actual capital amounts and ratios and those required by the regulatory standards are presented in the following tables. We have included the 0.625% increase for 2016 in our minimum capital adequacy rations in the tables below. At December 31, 2016 Actual For Capital Adequacy Purposes Under Prompt Corrective Action Provisions For Capital Adequacy Purposes with Capital Buffer To Be Well Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio Amount Ratio CETI capital (to risk-weighted assets) - Westbury Bank $ 72,012 12.1 % $ 26,786 4.50 % $ 30,507 5.125 % $ 38,692 6.50 % Tier 1 capital (to risk-weighted assets) - Westbury Bank 72,012 12.10 % 35,715 6.00 % 39,436 6.625 % 47,620 8.00 % Total capital (to risk-weighted assets) - Westbury Bank 77,463 13.01 % 47,620 8.00 % 51,341 8.625 % 59,525 10.00 % Leverage (to adjusted total assets) - Westbury Bank 72,012 10.17 % 28,323 4.00 % N/A N/A 35,404 5.00 % At September 30, 2016 Actual For Capital Adequacy Purposes Under Prompt Corrective Action Provisions For Capital Adequacy Purposes with Capital Buffer To Be Well Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio Amount Ratio CET1 capital (to risk-weighted assets) - Westbury Bank $ 71,383 12.61 % $ 25,472 4.50 % $ 29,010 5.125 % $ 36,793 6.50 % Tier 1 capital (to risk-weighted assets) - Westbury Bank 71,383 12.61 % 33,963 6.00 % 37,500 6.625 % 45,283 8.00 % Total capital (to risk-weighted assets) - Westbury Bank 76,627 13.54 % 45,283 8.00 % 48,821 8.625 % 56,604 10.00 % Leverage (to adjusted total assets) - Westbury Bank 71,383 10.23 % 27,911 4.00 % N/A N/A 34,889 5.00 % The following table reconciles the Bank’s stockholder's equity to regulatory capital as of December 31, 2016 and September 30, 2016: December 31, 2016 September 30, 2016 Stockholder's equity of the Bank $ 72,020 $ 73,332 Less: Unrealized (gain) loss on securities 1,290 (561 ) Disallowed deferred tax assets (1,298 ) (1,388 ) Tier 1, CETI and leverage capital 72,012 71,383 Plus: Allowable general valuation allowances 5,451 5,244 Total capital $ 77,463 $ 76,627

Commitments

Commitments	3 Months Ended
Commitments	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments	Commitments and Contingencies 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 accompanying 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 off-balance sheet instruments were outstanding whose contract amounts represent credit risk: December 31, 2016 September 30, 2016 Commitments to extend commercial and residential mortgage credit: Fixed rate $ 17,776 $ 2,013 Adjustable rate 6,909 1,442 Unused commercial loan lines of credit 69,995 68,752 Unused home equity line of credit 27,045 27,315 Standby letters of credit 1,122 1,076 Commitment to sell loans 1,156 1,881 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 underlying 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. Unfunded commitments under lines of credit are commitments for possible future extensions of credit to existing customers. These lines of credit 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 December 31, 2016 and September 30, 2016, no amounts have been recorded as liabilities for the Company’s potential obligations under these guarantees. Litigation In the normal course of business, the Company is involved in various legal proceedings. In the opinion of management, any liabilities resulting from such proceedings would not have a material adverse effect on the Company's consolidated financial statements.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
Fair Value Measurements	Dec. 31, 2016
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 fair value hierarchy, is set forth below. Financial Instruments Recorded at Fair Value on a Recurring Basis 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 inputs are not available, securities are classified within Level 3 of the fair value 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 fair value hierarchy. Assets and liabilities recorded at fair value on a recurring basis The following table summarizes financial instruments 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 December 31, 2016 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 44,516 — 44,516 — U.S. Government agency collateralized mortgage obligations 3,965 — 3,965 — U.S. Government agency commercial mortgage-backed securities 13,810 — 13,810 — Municipal securities-tax exempt 26,993 — 26,993 — Municipal securities-taxable 12,688 — 12,688 — Corporate securities — — — — Total securities available-for-sale $ 101,997 $ — $ 101,997 $ — Derivatives $ — $ — $ — $ — Liabilities Derivatives $ — $ — $ — $ — Fair Value Measurements September 30, 2016 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 $ 25 $ — $ 25 $ — U.S. Government agency residential mortgage-backed securities 40,750 — 40,750 — U.S. Government agency collateralized mortgage obligations 2,680 — 2,680 — U.S. Government agency commercial mortgage-backed securities 11,526 — 11,526 — Municipal securities-tax exempt 25,682 — 25,682 — Municipal securities-taxable 13,109 — 13,109 — Corporate securities — — — — Total securities available-for-sale $ 93,772 $ — $ 93,772 $ — Derivatives $ 98 $ — $ 98 $ — Liabilities Derivatives $ 98 $ — $ 98 $ — The Company did not have any transfers between Level 1, Level 2, and Level 3 of the fair value hierarchy during the three months ended December 31, 2016. 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, therefore, result in a transfer between levels. Financial Instruments Recorded at Fair Value on a Nonrecurring Basis The Company may be required, from time to time, to measure certain financial 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 $325 and $52 had a valuation allowance of $55 and $52 included in the allowance for loan losses to reflect their fair value as of December 31, 2016 and September 30, 2016, respectively. Foreclosed real estate : The Company does not record foreclosed real estate owned at 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 December 31, 2016, mortgage servicing rights with a carrying amount of $946 had a valuation allowance of $105 to reflect their fair value of $841 . As of September 30, 2016, mortgage servicing rights with a carrying amount of $1,012 had a valuation allowance of $212 to reflect their fair value of $800 . Assets and liabilities recorded at fair value on a non-recurring basis Fair Value Measurements December 31, 2016 Total Quoted Prices in Significant Other Significant Other Assets Impaired loans $ 270 $ — $ — $ 270 Foreclosed real estate — — — — Mortgage servicing rights 841 — — 841 Fair Value Measurements September 30, 2016 Total Quoted Prices in Significant Other Significant Other Assets Impaired loans $ — $ — $ — $ — Foreclosed real estate 99 — — 99 Mortgage servicing rights 800 — — 800 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 accompanying 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 herein 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 accompanying 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 or business 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 : The fair values 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. The carrying amounts of short term FHLB advances reported in the consolidated balance sheets approximated those liabilities' fair values. 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 December 31, 2016 and September 30, 2016. The estimated fair values and related carrying amounts of the Company’s financial instruments as of the dates noted below were as follows: December 31, 2016 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 $ 41,996 $ 41,996 $ 41,996 $ — $ — Securities available for sale 101,997 101,997 — 101,997 — Securities held to maturity 2,293 2,316 — 2,316 — Loans held for sale, net 1,156 1,156 — 1,156 — Loans, net 543,220 540,680 — — 540,680 Federal Home Loan Bank stock 1,330 1,330 — — 1,330 Mortgage servicing rights 841 841 — — 841 Accrued interest receivable 2,299 2,299 2,299 — — Derivative asset — — — — — Financial liabilities: Deposits 629,852 594,785 127,670 — 467,115 Short-term advances from Federal Home Loan Bank — — — — — Long-term advances from Federal Home Loan Bank 20,000 18,785 — — 18,785 Advance payments by borrowers for property taxes and insurance 550 550 550 — — Accrued interest payable 7 7 7 — — Derivative liability — — — — — September 30, 2016 Carrying Estimated Fair Quoted Prices in Significant Other Significant Other Financial assets: Cash and cash equivalents $ 29,613 $ 29,613 $ 29,613 $ — $ — Securities available for sale 93,772 93,772 — 93,772 — Securities held to maturity 2,293 2,392 — 2,392 — Loans held for sale, net 1,881 1,881 — 1,881 — Loans, net 533,759 536,434 — — 536,434 Federal Home Loan Bank stock 1,330 1,330 — — 1,330 Mortgage servicing rights 800 800 — — 800 Accrued interest receivable 2,173 2,173 2,173 — — Derivative asset 98 98 — 98 — Financial liabilities: Deposits 591,977 574,787 111,841 — 462,946 Short-term advances from Federal Home Loan Bank — — — — — Long-term advances from Federal Home Loan Bank 20,000 19,472 — — 19,472 Advance payments by borrowers for property taxes and insurance 5,455 5,455 5,455 — — Accrued interest payable 5 5 5 — — Derivative liability 98 98 — 98 —

Employee Stock Ownership Plan

Employee Stock Ownership Plan	3 Months Ended
Employee Stock Ownership Plan	Dec. 31, 2016
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. Additional principal payments, which serve to pay down the debt and accelerate the release of ESOP shares to plan participants, may be made by the Bank at the discretion of its Board of Directors. The ESOP shares were pledged as collateral for its debt obligations to the Company. 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 financial statements. The shares pledged as collateral are reported as unearned ESOP shares in the accompanying 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 released shares, and the released shares become outstanding for EPS computations. During the three months ended December 31, 2016 and 2015, 10,285 and 5,142 shares were committed to be released, respectively. The total ESOP compensation expense recorded for the three months ended December 31, 2016 and 2015 was $207 and $91 , respectively. The ESOP shares as of December 31, 2016 and September 30, 2016 were as follows (in thousands, except share data): December 31, 2016 September 30, 2016 Allocated shares to active participants 52,759 52,773 Shares committed to be released 41,140 30,855 Unallocated shares 308,553 318,838 Total ESOP shares 402,452 402,466 Fair value of unallocated shares $ 6,387 $ 6,227 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 December 31, 2016 2015 Total cost of stock grant plan during the period $ 134 $ 151 Total cost of stock option plan during the period 64 57 Total cost of share-based payment plans during the period $ 198 $ 208 Amount of related income tax benefit recognized in income $ 78 $ 82 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 under the Plan of up to 203,665 restricted stock awards and up to 509,162 stock options. As of December 31, 2016 there were 5,536 restricted stock awards and 34,784 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 common shares at the date of grant: those option awards generally vest pro-rata over five years of service and have 10 -year contractual terms. Restricted shares typically vest pro-rata 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. 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 stock options outstanding for the three months ended December 31, 2016: 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, 2016 474,132 $ 16.46 Granted 2,750 21.00 Exercised — — Expired or canceled 150 17.35 Forfeited 12,547 16.15 Options outstanding as of December 31, 2016 464,185 $ 16.49 8.06 $ 1,953 Options exercisable as of December 31, 2016 135,657 $ 15.49 7.62 $ 707 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. Since options were first awarded in June 2014 and the Company has had a minimal number of options exercised by participants in the Incentive Plan, the expected life of options is estimated based on the assumption that options will be exercised evenly throughout their life after vesting and represents the period of time that options granted are expected to remain outstanding. The following assumptions were used for options granted during the three months ended December 31: 2016 2015 Risk-free interest rate 2.19 % 1.99 % Expected volatility of Company's stock 15.74 % 7.44 % Expected dividend yield — % — % Expected life of options (years) 7.5 7.5 Weighted average fair value per option of options granted during the period $ 5.14 $ 2.89 The total intrinsic value of options exercised during each of the three months ended December 31, 2016 and 2015 was zero and $10 , respectively. The following is a summary of changes in restricted shares for the three months ended December 31, 2016: Number of Shares Weighted Average Grant Date Fair Value Shares Outstanding at September 30, 2016 114,883 $ 15.20 Granted 7,500 21.50 Vested — — Forfeited 4,278 15.20 Shares Outstanding at December 31, 2016 118,105 $ 15.60 The total intrinsic value of restricted shares that vested during both of the three months ended December 31, 2016 and 2015 was zero . As of December 31, 2016, there was $2.4 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 December 31, 2016, the weighted-average period over which the unrecognized compensation expense is expected to be recognized was approximately 3.0 years.

Compensation Equity Plans

Compensation Equity Plans	3 Months Ended
Compensation Equity Plans	Dec. 31, 2016
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. Additional principal payments, which serve to pay down the debt and accelerate the release of ESOP shares to plan participants, may be made by the Bank at the discretion of its Board of Directors. The ESOP shares were pledged as collateral for its debt obligations to the Company. 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 financial statements. The shares pledged as collateral are reported as unearned ESOP shares in the accompanying 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 released shares, and the released shares become outstanding for EPS computations. During the three months ended December 31, 2016 and 2015, 10,285 and 5,142 shares were committed to be released, respectively. The total ESOP compensation expense recorded for the three months ended December 31, 2016 and 2015 was $207 and $91 , respectively. The ESOP shares as of December 31, 2016 and September 30, 2016 were as follows (in thousands, except share data): December 31, 2016 September 30, 2016 Allocated shares to active participants 52,759 52,773 Shares committed to be released 41,140 30,855 Unallocated shares 308,553 318,838 Total ESOP shares 402,452 402,466 Fair value of unallocated shares $ 6,387 $ 6,227 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 December 31, 2016 2015 Total cost of stock grant plan during the period $ 134 $ 151 Total cost of stock option plan during the period 64 57 Total cost of share-based payment plans during the period $ 198 $ 208 Amount of related income tax benefit recognized in income $ 78 $ 82 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 under the Plan of up to 203,665 restricted stock awards and up to 509,162 stock options. As of December 31, 2016 there were 5,536 restricted stock awards and 34,784 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 common shares at the date of grant: those option awards generally vest pro-rata over five years of service and have 10 -year contractual terms. Restricted shares typically vest pro-rata 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. 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 stock options outstanding for the three months ended December 31, 2016: 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, 2016 474,132 $ 16.46 Granted 2,750 21.00 Exercised — — Expired or canceled 150 17.35 Forfeited 12,547 16.15 Options outstanding as of December 31, 2016 464,185 $ 16.49 8.06 $ 1,953 Options exercisable as of December 31, 2016 135,657 $ 15.49 7.62 $ 707 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. Since options were first awarded in June 2014 and the Company has had a minimal number of options exercised by participants in the Incentive Plan, the expected life of options is estimated based on the assumption that options will be exercised evenly throughout their life after vesting and represents the period of time that options granted are expected to remain outstanding. The following assumptions were used for options granted during the three months ended December 31: 2016 2015 Risk-free interest rate 2.19 % 1.99 % Expected volatility of Company's stock 15.74 % 7.44 % Expected dividend yield — % — % Expected life of options (years) 7.5 7.5 Weighted average fair value per option of options granted during the period $ 5.14 $ 2.89 The total intrinsic value of options exercised during each of the three months ended December 31, 2016 and 2015 was zero and $10 , respectively. The following is a summary of changes in restricted shares for the three months ended December 31, 2016: Number of Shares Weighted Average Grant Date Fair Value Shares Outstanding at September 30, 2016 114,883 $ 15.20 Granted 7,500 21.50 Vested — — Forfeited 4,278 15.20 Shares Outstanding at December 31, 2016 118,105 $ 15.60 The total intrinsic value of restricted shares that vested during both of the three months ended December 31, 2016 and 2015 was zero . As of December 31, 2016, there was $2.4 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 December 31, 2016, the weighted-average period over which the unrecognized compensation expense is expected to be recognized was approximately 3.0 years.

Condensed Parent Company Financ

Condensed Parent Company Financial Information	3 Months Ended
Condensed Parent Company Financial Information	Dec. 31, 2016
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 for the periods indicated below: Balance Sheets December 31, September 30, 2016 2016 Assets Cash and interest bearing deposits $ 611 $ 251 Investments 46 55 Loan to ESOP 3,197 3,620 Investment in subsidiary 74,352 75,872 Other assets 2,477 2,397 Total assets $ 80,683 $ 82,195 Liabilities and Stockholders' Equity Total liabilities $ 38 $ 26 Stockholders' equity 80,645 82,169 Total liabilities and stockholders' equity $ 80,683 $ 82,195 Statements of Operations Three Months Ended December 31, 2016 2015 Interest and other income $ 32 $ 32 Interest and other expense 142 121 Loss before income tax benefit and equity in undistributed net income of subsidiary (110 ) (89 ) Income tax benefit (26 ) (18 ) Loss before equity in undistributed net income of subsidiary (84 ) (71 ) Equity in undistributed net income of subsidiary 831 1,110 Net income $ 747 $ 1,039 Statements of Cash Flows For Three Months Ended December 31, 2016 2015 Cash Flows From Operating Activities Net income $ 747 $ 1,039 Adjustments to reconcile net income to net cash provided by operating activities: Equity in undistributed net income of subsidiary (831 ) (1,110 ) Net change in other liabilities 12 (32 ) Net change in other assets 118 742 Net cash provided by operating activities 46 639 Cash Flows From Investing Activities Sales and maturities of securities 9 29 Payments received on ESOP loan 423 158 Dividend received from bank subsidiary 500 1,500 Net cash provided by investing activities 932 1,687 Cash Flows From Financing Activities Stock options exercised — 64 Repurchase of common stock (618 ) (506 ) Net cash used in financing activities (618 ) (442 ) Net increase in cash 360 1,884 Cash Beginning of period 251 1,440 End of period $ 611 $ 3,324

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
Earnings Per Share (Tables)	Dec. 31, 2016
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 December 31, 2016 2015 Net income $ 747 $ 1,039 Basic potential common shares: Weighted average shares outstanding 3,976,765 4,166,780 Weighted average unallocated ESOP shares (315,414 ) (353,122 ) Basic weighted average shares outstanding 3,661,351 3,813,658 Dilutive effect of equity awards 78,082 30,274 Diluted weighted average shares outstanding 3,739,433 3,843,932 Basic income per share $ 0.20 $ 0.27 Diluted income per share $ 0.20 $ 0.27

Investment Securitites (Tables)

Investment Securitites (Tables)	3 Months Ended
Investment Securitites (Tables)	Dec. 31, 2016
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: December 31, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Available for Sale U.S. Government and agency securities $ 25 $ — $ — $ 25 U.S. Government agency residential mortgage-backed securities 45,355 94 (933 ) 44,516 U.S. Government agency collateralized mortgage obligations 4,088 3 (126 ) 3,965 U.S. Government agency commercial mortgage-backed securities 13,839 19 (48 ) 13,810 Municipal securities-tax exempt 28,068 4 (1,079 ) 26,993 Municipal securities-taxable 12,745 29 (86 ) 12,688 Total Available for Sale 104,120 149 (2,272 ) 101,997 Held to Maturity Municipal securities-tax exempt 2,293 25 (2 ) 2,316 Total Investment Securities $ 106,413 $ 174 $ (2,274 ) $ 104,313 September 30, 2016 Amortized Gross Gross Fair Available for Sale U.S. Government and agency securities $ 24 $ 1 $ — $ 25 U.S. Government agency residential mortgage-backed securities 40,289 504 (43 ) 40,750 U.S. Government agency collateralized mortgage obligations 2,674 24 (18 ) 2,680 U.S. Government agency commercial mortgage-backed securities 11,376 150 — 11,526 Municipal securities-tax exempt 25,730 51 (99 ) 25,682 Municipal securities-taxable 12,756 358 (5 ) 13,109 Total Available for Sale 92,849 1,088 (165 ) 93,772 Held to Maturity Municipal securities-tax exempt 2,293 99 — 2,392 Total Investment Securities $ 95,142 $ 1,187 $ (165 ) $ 96,164
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 December 31, 2016 are shown in the following table. Actual maturities differ from contractual maturities for mortgage-backed securities and collateralized mortgage obligations 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. December 31, 2016 Amortized Cost Fair Value Available for sale: Due in one year or less $ 563 $ 564 Due after one year through five years 12,880 12,766 Due after five years through ten years 21,607 20,830 Due after ten years 5,788 5,546 U.S. Government agency residential mortgage-backed securities 45,355 44,516 U.S. Government agency collateralized mortgage obligations 4,088 3,965 U.S. Government agency commercial mortgage-backed securities 13,839 13,810 104,120 101,997 Held to maturity: Due in one year or less 168 168 Due after one year through five years 703 701 Due after five years through ten years 982 999 Due after ten years 440 448 2,293 2,316 Total $ 106,413 $ 104,313
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: December 31, 2016 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 34,517 (870 ) 2,868 (63 ) 37,385 (933 ) U.S. Government agency collateralized mortgage obligations 2,511 (91 ) 523 (35 ) 3,034 (126 ) U.S Government agency commercial mortgage-backed securities 9,965 (48 ) — — 9,965 (48 ) Municipal securities-tax exempt 26,382 (1,079 ) — — 26,382 (1,079 ) Municipal securities-taxable 8,658 (86 ) — — 8,658 (86 ) Total Available for Sale $ 82,033 $ (2,174 ) $ 3,391 $ (98 ) $ 85,424 $ (2,272 ) Held to Maturity Municipal securities-tax exempt 688 (2 ) — — 688 (2 ) Total Investment Securities $ 82,721 $ (2,176 ) $ 3,391 $ (98 ) $ 86,112 $ (2,274 ) September 30, 2016 Less than 12 Months 12 Months or Longer Total Fair Unrealized Fair Unrealized Fair Unrealized U.S. Government and agency securities $ — $ — $ — $ — $ — $ — U.S. Government agency residential mortgage-backed securities 2,726 (5 ) 3,020 (38 ) 5,746 (43 ) U.S. Government agency collateralized mortgage obligations — — 576 (18 ) 576 (18 ) U.S. Government agency commercial mortgage-backed securities — — — — — — Municipal securities-tax exempt 18,314 (99 ) — — 18,314 (99 ) Municipal securities-taxable 550 (5 ) — — 550 (5 ) Total Available for Sale $ 21,590 $ (109 ) $ 3,596 $ (56 ) $ 25,186 $ (165 ) Held to Maturity Municipal securities-tax exempt — — — — — — Total Investment Securities $ 21,590 $ (109 ) $ 3,596 $ (56 ) $ 25,186 $ (165 )

Loans (Tables)

Loans (Tables)	3 Months Ended
Loans (Tables)	Dec. 31, 2016
Loans
Summary of balances of loans	A summary of the balances of loans as of the dates indicated follows: December 31, 2016 September 30, 2016 Real estate: Single family $ 152,391 $ 158,541 Multifamily 115,946 123,623 Commercial real estate non-owner occupied 127,574 117,971 Commercial real estate owner occupied 69,973 63,108 Construction and land development 19,195 16,230 Total real estate 485,079 479,473 Commercial business 45,025 40,836 Consumer: Home equity lines of credit 14,906 14,969 Education 3,280 3,401 Other 480 462 Total consumer 18,666 18,832 Total loans 548,770 539,141 Less: Net deferred loan fees 99 138 Allowance for loan losses 5,451 5,244 Net loans $ 543,220 $ 533,759
Schedule of contractual aging of recorded investment in past due loans	The following tables present the contractual aging of the Company's recorded investment in past due loans by class of loans as of December 31, 2016 and September 30, 2016: December 31, 2016 Current 30-59 Days Past Due 60-89 Days Past Due Loans Past or More Total Single family $ 151,010 $ 655 $ 400 $ 326 $ 152,391 Multifamily 115,930 16 — — 115,946 Commercial real estate non-owner occupied 127,574 — — — 127,574 Commercial real estate owner occupied 69,973 — — — 69,973 Construction and land development 19,195 — — — 19,195 Commercial business 45,025 — — — 45,025 Consumer and other: Home equity lines of credit 14,879 — — 27 14,906 Education 3,023 107 12 138 3,280 Other 480 — — — 480 $ 547,089 $ 778 $ 412 $ 491 $ 548,770 September 30, 2016 Current 30-59 Days Past Due 60-89 Days Past Due Loans Past or More Total Single family $ 157,803 $ 239 $ 426 $ 73 $ 158,541 Multifamily 123,623 — — — 123,623 Commercial real estate non-owner occupied 117,971 — — — 117,971 Commercial real estate owner occupied 63,108 — — — 63,108 Construction and land development 16,230 — — — 16,230 Commercial business 40,836 — — — 40,836 Consumer and other: Home equity lines of credit 14,942 — — 27 14,969 Education 3,202 11 39 149 3,401 Other 462 — — — 462 $ 538,177 $ 250 $ 465 $ 249 $ 539,141
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 of our loan portfolio as of December 31, 2016 and September 30, 2016: December 31, 2016 Pass Watch Special Mention Substandard Doubtful Total Single family $ 149,654 $ 739 $ — $ 1,998 $ — $ 152,391 Multifamily 114,224 1,722 — — — 115,946 Commercial real estate non-owner occupied 126,499 1,075 — — — 127,574 Commercial real estate owner occupied 66,899 2,238 — 836 — 69,973 Construction and land development 19,194 — — 1 — 19,195 Commercial business 35,607 8,884 — 534 — 45,025 Consumer and other: Home equity lines of credit 14,812 — — 94 — 14,906 Education 3,280 — — — — 3,280 Other 480 — — — — 480 Total $ 530,649 $ 14,658 $ — $ 3,463 $ — $ 548,770 September 30, 2016 Pass Watch Special Mention Substandard Doubtful Total Single family $ 156,042 $ 744 $ — $ 1,755 $ — $ 158,541 Multifamily 121,878 1,745 — — — 123,623 Commercial real estate non-owner occupied 116,880 695 396 — — 117,971 Commercial real estate owner occupied 59,993 3,115 — — — 63,108 Construction and land development 16,228 — — 2 — 16,230 Commercial business 31,677 8,945 214 — — 40,836 Consumer and other: Home equity lines of credit 14,874 — — 95 — 14,969 Education 3,401 — — — — 3,401 Other 462 — — — — 462 $ 521,435 $ 15,244 $ 610 $ 1,852 $ — $ 539,141
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 December 31, 2016 and 2015: Three Months Ended December 31, 2016 Single Family Multifamily Commercial Real Estate - Non-owner Occupied Commercial Real Estate - Owner-Occupied Construction and Land Development Commercial Business Consumer and Other Total Allowance for loan losses: Beginning balance $ 980 $ 1,015 $ 1,519 $ 813 $ 344 $ 500 $ 73 $ 5,244 Provision for loan losses (57 ) (32 ) 65 129 59 39 (3 ) 200 Loans charged-off — — — — — — — — Recoveries — — — — — 5 2 7 Ending balance $ 923 $ 983 $ 1,584 $ 942 $ 403 $ 544 $ 72 $ 5,451 Period-ended amount allocated for: Individually evaluated for impairment $ 3 $ — $ — $ — $ — $ — $ 51 $ 54 Collectively evaluated for impairment 920 983 1,584 942 403 544 21 5,397 Ending balance $ 923 $ 983 $ 1,584 $ 942 $ 403 $ 544 $ 72 $ 5,451 Loans: Individually evaluated for impairment $ 1,447 $ 1,722 $ — $ — $ — $ — $ 86 $ 3,255 Collectively evaluated for impairment 150,944 114,224 127,574 69,973 19,195 45,025 18,580 545,515 Ending balance $ 152,391 $ 115,946 $ 127,574 $ 69,973 $ 19,195 $ 45,025 $ 18,666 $ 548,770 Three Months Ended Single Family Multifamily Commercial Real Estate - Non-owner Occupied Commercial Real Estate - Owner-Occupied Construction and Commercial Consumer Total Allowance for loan losses: Beginning balance $ 1,073 $ 1,013 $ 1,091 $ 513 $ 330 $ 498 $ 80 $ 4,598 Provision for loan losses (42 ) 327 31 16 14 (200 ) 4 150 Loans charged-off — — — — — — (10 ) (10 ) Recoveries — — — 1 — 4 4 9 Ending balance $ 1,031 $ 1,340 $ 1,122 $ 530 $ 344 $ 302 $ 78 $ 4,747 Period-ended amount allocated for: Individually evaluated for impairment $ 23 $ — $ — $ — $ — $ — $ 55 $ 78 Collectively evaluated for impairment 1,008 1,340 1,122 530 344 302 23 4,669 Ending balance $ 1,031 $ 1,340 $ 1,122 $ 530 $ 344 $ 302 $ 78 $ 4,747 Loans: Individually evaluated for impairment $ 1,605 $ 1,816 $ — $ — $ — $ — $ 94 $ 3,515 Collectively evaluated for impairment 149,385 116,873 112,482 51,033 17,163 31,866 19,277 498,079 Ending balance $ 150,990 $ 118,689 $ 112,482 $ 51,033 $ 17,163 $ 31,866 $ 19,371 $ 501,594
Schedule of impaired loans	Three months ended December 31, 2016 Unpaid Principal Balance Recorded Investment Allowance for Loan Losses Allocated Average Recorded Investment Interest Income Recognized With no related allowance recorded: Single family $ 1,309 $ 1,174 $ — $ 1,315 $ 12 Multifamily 1,764 1,722 — 1,734 18 Commercial real estate non-owner occupied — — — — — Commercial real estate owner occupied — — — — — Construction and land development 4 — — — — Commercial business — — — — — Consumer and other 114 35 — 36 — With an allowance recorded: Single family 273 273 3 137 5 Multifamily — — — — — Commercial real estate non-owner occupied — — — — — Commercial real estate owner occupied — — — — — Construction and land development — — — — — Commercial business — — — — — Consumer and other 51 51 51 52 1 $ 3,515 $ 3,255 $ 54 $ 3,274 $ 36 Three months ended December 31, 2015 Unpaid Principal Balance Recorded Investment Allowance for Loan Losses Allocated Average Recorded Investment Interest Income Recognized With no related allowance recorded: Single family $ 1,338 $ 1,194 $ — $ 1,189 $ 14 Multifamily 1,889 1,816 — 1,824 19 Commercial real estate non-owner occupied — — — — — Commercial real estate owner occupied — — — — — Construction and land development — — — — — Commercial business — — — — — Consumer and other 117 39 — 105 — With an allowance recorded: Single family 411 411 23 412 3 Multifamily — — — — — Commercial real estate non-owner occupied — — — — — Commercial real estate owner occupied — — — — — Construction and land development — — — — — Commercial business — — — — — Consumer and other 55 55 55 55 1 $ 3,810 $ 3,515 $ 78 $ 3,585 $ 37
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: Three Months Ended December 31, 2016 Balance, beginning $ 7,813 New loans originated 2,468 Draws on lines of credit 29 Principal repayments (563 ) Balance, ending $ 9,747
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 December 31, 2016 and September 30, 2016: December 31, 2016 September 30, 2016 Single family $ 518 $ 338 Multifamily — — Commercial real estate non-owner occupied — — Commercial real estate owner occupied — — Construction and land development — — Commercial business — — Consumer and other: Home equity lines of credit 35 36 Education 150 188 Other — — $ 703 $ 562
Troubled debt restructurings
Loans
Schedule of recorded investment by accrual status	The following is a summary of troubled debt restructured loans (TDRs) at December 31, 2016 and September 30, 2016: December 31, 2016 September 30, 2016 Troubled debt restructurings - accrual $ 2,719 $ 3,021 Troubled debt restructurings - nonaccrual — — $ 2,719 $ 3,021

Deposits (Tables)

Deposits (Tables)	3 Months Ended
Deposits (Tables)	Dec. 31, 2016
Deposits [Abstract]
Schedule of composition of deposits	The following table presents the composition of deposits as of: December 31, 2016 September 30, 2016 Amount Percent Amount Percent Checking Accounts: Noninterest bearing $ 127,670 20.27 % $ 111,841 18.89 % Interest bearing 141,089 22.40 % 135,866 22.95 % 268,759 42.67 % 247,707 41.84 % Passbook and Statement Savings 134,214 21.31 % 133,155 22.50 % Variable Rate Money Market Accounts 71,309 11.32 % 64,593 10.91 % Certificates of Deposit 155,570 24.70 % 146,522 24.75 % $ 629,852 100.00 % $ 591,977 100.00 %

Regulatory Capital (Tables)

Regulatory Capital (Tables)	3 Months Ended
Regulatory Capital (Tables)	Dec. 31, 2016
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 are presented in the following tables. We have included the 0.625% increase for 2016 in our minimum capital adequacy rations in the tables below. At December 31, 2016 Actual For Capital Adequacy Purposes Under Prompt Corrective Action Provisions For Capital Adequacy Purposes with Capital Buffer To Be Well Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio Amount Ratio CETI capital (to risk-weighted assets) - Westbury Bank $ 72,012 12.1 % $ 26,786 4.50 % $ 30,507 5.125 % $ 38,692 6.50 % Tier 1 capital (to risk-weighted assets) - Westbury Bank 72,012 12.10 % 35,715 6.00 % 39,436 6.625 % 47,620 8.00 % Total capital (to risk-weighted assets) - Westbury Bank 77,463 13.01 % 47,620 8.00 % 51,341 8.625 % 59,525 10.00 % Leverage (to adjusted total assets) - Westbury Bank 72,012 10.17 % 28,323 4.00 % N/A N/A 35,404 5.00 % At September 30, 2016 Actual For Capital Adequacy Purposes Under Prompt Corrective Action Provisions For Capital Adequacy Purposes with Capital Buffer To Be Well Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio Amount Ratio CET1 capital (to risk-weighted assets) - Westbury Bank $ 71,383 12.61 % $ 25,472 4.50 % $ 29,010 5.125 % $ 36,793 6.50 % Tier 1 capital (to risk-weighted assets) - Westbury Bank 71,383 12.61 % 33,963 6.00 % 37,500 6.625 % 45,283 8.00 % Total capital (to risk-weighted assets) - Westbury Bank 76,627 13.54 % 45,283 8.00 % 48,821 8.625 % 56,604 10.00 % Leverage (to adjusted total assets) - Westbury Bank 71,383 10.23 % 27,911 4.00 % N/A N/A 34,889 5.00 %
Schedule of reconciliation of the Bank's stockholders' equity to regulatory capital	The following table reconciles the Bank’s stockholder's equity to regulatory capital as of December 31, 2016 and September 30, 2016: December 31, 2016 September 30, 2016 Stockholder's equity of the Bank $ 72,020 $ 73,332 Less: Unrealized (gain) loss on securities 1,290 (561 ) Disallowed deferred tax assets (1,298 ) (1,388 ) Tier 1, CETI and leverage capital 72,012 71,383 Plus: Allowable general valuation allowances 5,451 5,244 Total capital $ 77,463 $ 76,627

Commitments (Tables)

Commitments (Tables)	3 Months Ended
Commitments (Tables)	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Schedule of financial instruments whose contract amounts represent credit risk	December 31, 2016 September 30, 2016 Commitments to extend commercial and residential mortgage credit: Fixed rate $ 17,776 $ 2,013 Adjustable rate 6,909 1,442 Unused commercial loan lines of credit 69,995 68,752 Unused home equity line of credit 27,045 27,315 Standby letters of credit 1,122 1,076 Commitment to sell loans 1,156 1,881

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
Fair Value Measurements (Tables)	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Schedule of assets and liabilities measured at fair value on a recurring basis	The following table summarizes financial instruments 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 December 31, 2016 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 44,516 — 44,516 — U.S. Government agency collateralized mortgage obligations 3,965 — 3,965 — U.S. Government agency commercial mortgage-backed securities 13,810 — 13,810 — Municipal securities-tax exempt 26,993 — 26,993 — Municipal securities-taxable 12,688 — 12,688 — Corporate securities — — — — Total securities available-for-sale $ 101,997 $ — $ 101,997 $ — Derivatives $ — $ — $ — $ — Liabilities Derivatives $ — $ — $ — $ — Fair Value Measurements September 30, 2016 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 $ 25 $ — $ 25 $ — U.S. Government agency residential mortgage-backed securities 40,750 — 40,750 — U.S. Government agency collateralized mortgage obligations 2,680 — 2,680 — U.S. Government agency commercial mortgage-backed securities 11,526 — 11,526 — Municipal securities-tax exempt 25,682 — 25,682 — Municipal securities-taxable 13,109 — 13,109 — Corporate securities — — — — Total securities available-for-sale $ 93,772 $ — $ 93,772 $ — Derivatives $ 98 $ — $ 98 $ — Liabilities Derivatives $ 98 $ — $ 98 $ —
Schedule of assets measured at fair value on a nonrecurring basis	Fair Value Measurements December 31, 2016 Total Quoted Prices in Significant Other Significant Other Assets Impaired loans $ 270 $ — $ — $ 270 Foreclosed real estate — — — — Mortgage servicing rights 841 — — 841 Fair Value Measurements September 30, 2016 Total Quoted Prices in Significant Other Significant Other Assets Impaired loans $ — $ — $ — $ — Foreclosed real estate 99 — — 99 Mortgage servicing rights 800 — — 800
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 as of the dates noted below were as follows: December 31, 2016 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 $ 41,996 $ 41,996 $ 41,996 $ — $ — Securities available for sale 101,997 101,997 — 101,997 — Securities held to maturity 2,293 2,316 — 2,316 — Loans held for sale, net 1,156 1,156 — 1,156 — Loans, net 543,220 540,680 — — 540,680 Federal Home Loan Bank stock 1,330 1,330 — — 1,330 Mortgage servicing rights 841 841 — — 841 Accrued interest receivable 2,299 2,299 2,299 — — Derivative asset — — — — — Financial liabilities: Deposits 629,852 594,785 127,670 — 467,115 Short-term advances from Federal Home Loan Bank — — — — — Long-term advances from Federal Home Loan Bank 20,000 18,785 — — 18,785 Advance payments by borrowers for property taxes and insurance 550 550 550 — — Accrued interest payable 7 7 7 — — Derivative liability — — — — — September 30, 2016 Carrying Estimated Fair Quoted Prices in Significant Other Significant Other Financial assets: Cash and cash equivalents $ 29,613 $ 29,613 $ 29,613 $ — $ — Securities available for sale 93,772 93,772 — 93,772 — Securities held to maturity 2,293 2,392 — 2,392 — Loans held for sale, net 1,881 1,881 — 1,881 — Loans, net 533,759 536,434 — — 536,434 Federal Home Loan Bank stock 1,330 1,330 — — 1,330 Mortgage servicing rights 800 800 — — 800 Accrued interest receivable 2,173 2,173 2,173 — — Derivative asset 98 98 — 98 — Financial liabilities: Deposits 591,977 574,787 111,841 — 462,946 Short-term advances from Federal Home Loan Bank — — — — — Long-term advances from Federal Home Loan Bank 20,000 19,472 — — 19,472 Advance payments by borrowers for property taxes and insurance 5,455 5,455 5,455 — — Accrued interest payable 5 5 5 — — Derivative liability 98 98 — 98 —

Employee Stock Ownership Plan D

Employee Stock Ownership Plan Disclosure of (Tables)	3 Months Ended
Employee Stock Ownership Plan Disclosure of (Tables)	Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Employee Stock Ownership Plan (ESOP) Disclosures	The ESOP shares as of December 31, 2016 and September 30, 2016 were as follows (in thousands, except share data): December 31, 2016 September 30, 2016 Allocated shares to active participants 52,759 52,773 Shares committed to be released 41,140 30,855 Unallocated shares 308,553 318,838 Total ESOP shares 402,452 402,466 Fair value of unallocated shares $ 6,387 $ 6,227

Compensation Equity Plans (Tabl

Compensation Equity Plans (Tables)	3 Months Ended
Compensation Equity Plans (Tables)	Dec. 31, 2016
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 December 31, 2016 2015 Total cost of stock grant plan during the period $ 134 $ 151 Total cost of stock option plan during the period 64 57 Total cost of share-based payment plans during the period $ 198 $ 208 Amount of related income tax benefit recognized in income $ 78 $ 82
Schedule of Stock Options Activity	The following table summarizes stock options outstanding for the three months ended December 31, 2016: 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, 2016 474,132 $ 16.46 Granted 2,750 21.00 Exercised — — Expired or canceled 150 17.35 Forfeited 12,547 16.15 Options outstanding as of December 31, 2016 464,185 $ 16.49 8.06 $ 1,953 Options exercisable as of December 31, 2016 135,657 $ 15.49 7.62 $ 707
Schedule of Stock Options Valuation Assumptions	The following assumptions were used for options granted during the three months ended December 31: 2016 2015 Risk-free interest rate 2.19 % 1.99 % Expected volatility of Company's stock 15.74 % 7.44 % Expected dividend yield — % — % Expected life of options (years) 7.5 7.5 Weighted average fair value per option of options granted during the period $ 5.14 $ 2.89
Schedule of Restricted Stock Units Award Activity	The following is a summary of changes in restricted shares for the three months ended December 31, 2016: Number of Shares Weighted Average Grant Date Fair Value Shares Outstanding at September 30, 2016 114,883 $ 15.20 Granted 7,500 21.50 Vested — — Forfeited 4,278 15.20 Shares Outstanding at December 31, 2016 118,105 $ 15.60

Condensed Parent Company Fina30

Condensed Parent Company Financial Information (Tables)	3 Months Ended
Condensed Parent Company Financial Information (Tables)	Dec. 31, 2016
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 for the periods indicated below: Balance Sheets December 31, September 30, 2016 2016 Assets Cash and interest bearing deposits $ 611 $ 251 Investments 46 55 Loan to ESOP 3,197 3,620 Investment in subsidiary 74,352 75,872 Other assets 2,477 2,397 Total assets $ 80,683 $ 82,195 Liabilities and Stockholders' Equity Total liabilities $ 38 $ 26 Stockholders' equity 80,645 82,169 Total liabilities and stockholders' equity $ 80,683 $ 82,195
Condensed Income Statement	Statements of Operations Three Months Ended December 31, 2016 2015 Interest and other income $ 32 $ 32 Interest and other expense 142 121 Loss before income tax benefit and equity in undistributed net income of subsidiary (110 ) (89 ) Income tax benefit (26 ) (18 ) Loss before equity in undistributed net income of subsidiary (84 ) (71 ) Equity in undistributed net income of subsidiary 831 1,110 Net income $ 747 $ 1,039
Condensed Cash Flow Statement	Statements of Cash Flows For Three Months Ended December 31, 2016 2015 Cash Flows From Operating Activities Net income $ 747 $ 1,039 Adjustments to reconcile net income to net cash provided by operating activities: Equity in undistributed net income of subsidiary (831 ) (1,110 ) Net change in other liabilities 12 (32 ) Net change in other assets 118 742 Net cash provided by operating activities 46 639 Cash Flows From Investing Activities Sales and maturities of securities 9 29 Payments received on ESOP loan 423 158 Dividend received from bank subsidiary 500 1,500 Net cash provided by investing activities 932 1,687 Cash Flows From Financing Activities Stock options exercised — 64 Repurchase of common stock (618 ) (506 ) Net cash used in financing activities (618 ) (442 ) Net increase in cash 360 1,884 Cash Beginning of period 251 1,440 End of period $ 611 $ 3,324

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Earnings Per Share [Abstract]
Net income	$ 747	$ 1,039
Basic potential common shares:
Weighted average shares outstanding (in shares)	3,976,765	4,166,780
Weighted average unallocated ESOP shares (in shares)	(315,414)	(353,122)
Basic weighted average shares outstanding (in shares)	3,661,351	3,813,658
Dilutive potential common shares (in shares)	78,082	30,274
Diluted weighted average shares outstanding (in shares)	3,739,433	3,843,932
Basic loss per share (in dollars per share)	$ 0.20	$ 0.27
Diluted loss per share (in dollars per share)	$ 0.20	$ 0.27

Investment Securitites (Details

Investment Securitites (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Sep. 30, 2016
Available for Sale
Amortized Cost	$ 104,120	$ 92,849
Gross Unrealized Gains	149	1,088
Gross Unrealized Losses	(2,272)	(165)
Fair Value	101,997	93,772
Held to Maturity
Amortized Cost	2,293	2,293
Fair Value	2,316	2,392
Total Investment Securities
Amortized Cost	106,413	95,142
Gross Unrealized Gains	174	1,187
Gross Unrealized Losses	2,274	165
Fair Value	104,313	96,164
U.S. Government and agency securities
Available for Sale
Amortized Cost	25	24
Gross Unrealized Gains	0	1
Gross Unrealized Losses	0	0
Fair Value	25	25
U.S. Government agency residential mortgage-backed securities
Available for Sale
Amortized Cost	45,355	40,289
Gross Unrealized Gains	94	504
Gross Unrealized Losses	(933)	(43)
Fair Value	44,516	40,750
U.S. Government agency collateralized mortgage obligations
Available for Sale
Amortized Cost	4,088	2,674
Gross Unrealized Gains	3	24
Gross Unrealized Losses	(126)	(18)
Fair Value	3,965	2,680
U.S. Government agency commercial mortgage-backed securities
Available for Sale
Amortized Cost	13,839	11,376
Gross Unrealized Gains	19	150
Gross Unrealized Losses	(48)	0
Fair Value	13,810	11,526
Municipal securities-tax exempt
Available for Sale
Amortized Cost	28,068	25,730
Gross Unrealized Gains	4	51
Gross Unrealized Losses	(1,079)	(99)
Fair Value	26,993	25,682
Held to Maturity
Amortized Cost	2,293	2,293
Gross Unrealized Gains	25	99
Gross Unrealized Losses	2	0
Fair Value	2,316	2,392
Municipal securities-taxable
Available for Sale
Amortized Cost	12,745	12,756
Gross Unrealized Gains	29	358
Gross Unrealized Losses	(86)	(5)
Fair Value	$ 12,688	$ 13,109

Investment Securitites (Detai33

Investment Securitites (Details 2) - USD ($)	3 Months Ended
Investment Securitites (Details 2) - USD ($)	Dec. 31, 2016	Dec. 31, 2015	Sep. 30, 2016
Available for Sale, Amortized Cost
Due in one year or less	$ 563,000
Due after one year through five years	12,880,000
Due after five years through ten years	21,607,000
Due after ten years	5,788,000
Total	104,120,000
Available for Sale, Fair Value
Due in one year or less	564,000
Due after one year through five years	12,766,000
Due after five years through ten years	20,830,000
Due after ten years	5,546,000
Fair Value	101,997,000		$ 93,772,000
Other disclosures
Proceeds from sales of securities available-for-sale	829,000	$ 5,219,000
Gross realized gains on the sale of securities available-for-sale	4,000	12,000
Gross realized losses on the sale of securities available-for-sale	0	$ 10,000
Securities pledged to secure treasury, tax, and loan deposits and other purposes	28,434,000		24,364,000
Held to maturity, Amortized Cost
Due in one year or less	168,000
Due after one year through five years	703,000
Due after five years through ten years	982,000
Due after five years through ten years	440,000
Amortized Cost	2,293,000		2,293,000
Amortized Cost	106,413,000
Held to maturity, Fair Value
Due in one year or less	168,000
Due after one year through five years	701,000
Due after five years through ten years	999,000
Due after ten years	448,000
Fair Value	2,316,000		2,392,000
Investment Securities	104,313,000		96,164,000
U.S. Government agency collateralized mortgage obligations
Available for Sale, Amortized Cost
U.S. Government agency securities	4,088,000
Available for Sale, Fair Value
U.S. Government agency securities	3,965,000
Fair Value	3,965,000		2,680,000
U.S. Government agency residential mortgage-backed securities
Available for Sale, Amortized Cost
U.S. Government agency securities	45,355,000
Available for Sale, Fair Value
U.S. Government agency securities	44,516,000
Fair Value	44,516,000		40,750,000
U.S. Government agency commercial mortgage-backed securities
Available for Sale, Amortized Cost
U.S. Government agency securities	13,839,000
Available for Sale, Fair Value
U.S. Government agency securities	13,810,000
Fair Value	$ 13,810,000		$ 11,526,000

Investment Securitites (Detai34

Investment Securitites (Details 3) $ in Thousands	Dec. 31, 2016USD ($)security	Sep. 30, 2016USD ($)security
Total temporary impaired securities
Less than 12 months, Fair Value	$ 82,033	$ 21,590
Less than 12 months, Unrealized Losses	(2,174)	(109)
12 months or longer, Fair Value	3,391	3,596
12 months or longer, Unrealized Losses	(98)	(56)
Total, Fair Value	85,424	25,186
Total, Unrealized Losses	$ (2,272)	$ (165)
Number of securities in an unrealized loss position, greater than twelve months \| security	5	5
Number of securities in an unrealized loss position, less than twelve months \| security	148	58
Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions \| security	4
Investment Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 82,721	$ 21,590
Investment Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(2,176)	(109)
Investment Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	3,391	3,596
Investment Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(98)	(56)
Investment Securities, Continuous Unrealized Loss Position, Fair Value	86,112	25,186
Investment Securities, Continuous Unrealized Loss Position, Accumulated Loss	(2,274)	(165)
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	0
12 months or longer, Unrealized Losses	0	0
Total, Fair Value	0	0
Total, Unrealized Losses	0	0
U.S. Government agency residential mortgage-backed securities
Total temporary impaired securities
Less than 12 months, Fair Value	34,517	2,726
Less than 12 months, Unrealized Losses	(870)	(5)
12 months or longer, Fair Value	2,868	3,020
12 months or longer, Unrealized Losses	(63)	(38)
Total, Fair Value	37,385	5,746
Total, Unrealized Losses	(933)	(43)
U.S. Government agency collateralized mortgage obligations
Total temporary impaired securities
Less than 12 months, Fair Value	2,511	0
Less than 12 months, Unrealized Losses	(91)	0
12 months or longer, Fair Value	523	576
12 months or longer, Unrealized Losses	(35)	(18)
Total, Fair Value	3,034	576
Total, Unrealized Losses	(126)	(18)
U.S. Government agency commercial mortgage-backed securities
Total temporary impaired securities
Less than 12 months, Fair Value	9,965	0
Less than 12 months, Unrealized Losses	(48)	0
12 months or longer, Fair Value	0	0
12 months or longer, Unrealized Losses	0	0
Total, Fair Value	9,965	0
Total, Unrealized Losses	(48)	0
Municipal securities-tax exempt
Total temporary impaired securities
Less than 12 months, Fair Value	26,382	18,314
Less than 12 months, Unrealized Losses	(1,079)	(99)
12 months or longer, Fair Value	0	0
12 months or longer, Unrealized Losses	0	0
Total, Fair Value	26,382	18,314
Total, Unrealized Losses	(1,079)	(99)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	688	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(2)	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	688	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss	(2)	0
Municipal securities-taxable
Total temporary impaired securities
Less than 12 months, Fair Value	8,658	550
Less than 12 months, Unrealized Losses	(86)	(5)
12 months or longer, Fair Value	0	0
12 months or longer, Unrealized Losses	0	0
Total, Fair Value	8,658	550
Total, Unrealized Losses	$ (86)	$ (5)

Loans (Details)

Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015
Loans
Loans	$ 548,770	$ 539,141	$ 501,594
Less: Net deferred loan fees	99	138
Less: Allowance for loan losses	5,451	5,244	4,747	$ 4,598
Net loans	543,220	533,759
Real Estate
Loans
Loans	485,079	479,473
Single family
Loans
Loans	152,391	158,541	150,990
Less: Allowance for loan losses	923	980	1,031	1,073
Multifamily
Loans
Loans	115,946	123,623	118,689
Less: Allowance for loan losses	983	1,015	1,340	1,013
Non-owner occupied
Loans
Loans	127,574	117,971	112,482
Less: Allowance for loan losses	1,584	1,519	1,122	1,091
Owner occupied
Loans
Loans	69,973	63,108	51,033
Less: Allowance for loan losses	942	813	530	513
Construction and land development
Loans
Loans	19,195	16,230	17,163
Less: Allowance for loan losses	403	344	344	330
Commercial business
Loans
Loans	45,025	40,836	31,866
Less: Allowance for loan losses	544	500	302	498
Consumer
Loans
Loans	18,666	18,832	19,371
Less: Allowance for loan losses	72	73	$ 78	$ 80
Home equity lines of credit
Loans
Loans	14,906	14,969
Education
Loans
Loans	3,280	3,401
Other
Loans
Loans	$ 480	$ 462

Loans (Details 2)

Loans (Details 2) - USD ($)	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015
Contractual aging of the recorded investment in past due loans
Current	$ 547,089,000	$ 538,177,000
Total Loans	548,770,000	539,141,000	$ 501,594,000
Troubled debt restructurings - accrual	0	0
Past due loans
Contractual aging of the recorded investment in past due loans
Recorded investment in nonaccrual loans	703,000	562,000
Single family
Contractual aging of the recorded investment in past due loans
Current	151,010,000	157,803,000
Total Loans	152,391,000	158,541,000	150,990,000
Single family \| Past due loans
Contractual aging of the recorded investment in past due loans
Recorded investment in nonaccrual loans	518,000	338,000
Multifamily
Contractual aging of the recorded investment in past due loans
Current	115,930,000	123,623,000
Total Loans	115,946,000	123,623,000	118,689,000
Multifamily \| Past due loans
Contractual aging of the recorded investment in past due loans
Recorded investment in nonaccrual loans	0	0
Non-owner occupied
Contractual aging of the recorded investment in past due loans
Current	127,574,000	117,971,000
Total Loans	127,574,000	117,971,000	112,482,000
Non-owner occupied \| Past due loans
Contractual aging of the recorded investment in past due loans
Recorded investment in nonaccrual loans	0	0
Owner occupied
Contractual aging of the recorded investment in past due loans
Current	69,973,000	63,108,000
Total Loans	69,973,000	63,108,000	51,033,000
Owner occupied \| Past due loans
Contractual aging of the recorded investment in past due loans
Recorded investment in nonaccrual loans	0	0
Construction and land development
Contractual aging of the recorded investment in past due loans
Current	19,195,000	16,230,000
Total Loans	19,195,000	16,230,000	17,163,000
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	45,025,000	40,836,000
Total Loans	45,025,000	40,836,000	$ 31,866,000
Commercial business \| Past due loans
Contractual aging of the recorded investment in past due loans
Recorded investment in nonaccrual loans	0	0
Home equity lines of credit
Contractual aging of the recorded investment in past due loans
Current	14,879,000	14,942,000
Total Loans	14,906,000	14,969,000
Home equity lines of credit \| Past due loans
Contractual aging of the recorded investment in past due loans
Recorded investment in nonaccrual loans	35,000	36,000
Education
Contractual aging of the recorded investment in past due loans
Current	3,023,000	3,202,000
Total Loans	3,280,000	3,401,000
Education \| Past due loans
Contractual aging of the recorded investment in past due loans
Recorded investment in nonaccrual loans	150,000	188,000
Other
Contractual aging of the recorded investment in past due loans
Current	480,000	462,000
Total Loans	480,000	462,000
Other \| Past due loans
Contractual aging of the recorded investment in past due loans
Recorded investment in nonaccrual loans	0	0
Financing Receivables, 60 to 89 Days Past Due
Contractual aging of the recorded investment in past due loans
Financing Receivable, Recorded Investment, Past Due	412,000	465,000
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	400,000	426,000
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 \| Non-owner occupied
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 \| Owner occupied
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 \| Education
Contractual aging of the recorded investment in past due loans
Financing Receivable, Recorded Investment, Past Due	12,000	39,000
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	778,000	250,000
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	655,000	239,000
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	16,000	0
Financing Receivables, 30 to 59 Days Past Due \| Non-owner occupied
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 \| Owner occupied
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	0	0
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	107,000	11,000
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	491,000	249,000
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	326,000	73,000
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	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due \| Non-owner occupied
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 \| Owner occupied
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 \| 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	0
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	27,000	27,000
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	138,000	149,000
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	$ 0

Loans (Details 3)

Loans (Details 3) - USD ($) $ in Thousands	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015
Risk category of loans evaluated by internal asset classification
Total	$ 548,770	$ 539,141	$ 501,594
Single family
Risk category of loans evaluated by internal asset classification
Total	152,391	158,541	150,990
Multifamily
Risk category of loans evaluated by internal asset classification
Total	115,946	123,623	118,689
Non-owner occupied
Risk category of loans evaluated by internal asset classification
Total	127,574	117,971	112,482
Owner occupied
Risk category of loans evaluated by internal asset classification
Total	69,973	63,108	51,033
Construction and land development
Risk category of loans evaluated by internal asset classification
Total	19,195	16,230	17,163
Commercial business
Risk category of loans evaluated by internal asset classification
Total	45,025	40,836	$ 31,866
Home equity lines of credit
Risk category of loans evaluated by internal asset classification
Total	14,906	14,969
Education
Risk category of loans evaluated by internal asset classification
Total	3,280	3,401
Other
Risk category of loans evaluated by internal asset classification
Total	480	462
Pass
Risk category of loans evaluated by internal asset classification
Total	530,649	521,435
Pass \| Single family
Risk category of loans evaluated by internal asset classification
Total	149,654	156,042
Pass \| Multifamily
Risk category of loans evaluated by internal asset classification
Total	114,224	121,878
Pass \| Non-owner occupied
Risk category of loans evaluated by internal asset classification
Total	126,499	116,880
Pass \| Owner occupied
Risk category of loans evaluated by internal asset classification
Total	66,899	59,993
Pass \| Construction and land development
Risk category of loans evaluated by internal asset classification
Total	19,194	16,228
Pass \| Commercial business
Risk category of loans evaluated by internal asset classification
Total	35,607	31,677
Pass \| Home equity lines of credit
Risk category of loans evaluated by internal asset classification
Total	14,812	14,874
Pass \| Education
Risk category of loans evaluated by internal asset classification
Total	3,280	3,401
Pass \| Other
Risk category of loans evaluated by internal asset classification
Total	480	462
Watch
Risk category of loans evaluated by internal asset classification
Total	14,658	15,244
Watch \| Single family
Risk category of loans evaluated by internal asset classification
Total	739	744
Watch \| Multifamily
Risk category of loans evaluated by internal asset classification
Total	1,722	1,745
Watch \| Non-owner occupied
Risk category of loans evaluated by internal asset classification
Total	1,075	695
Watch \| Owner occupied
Risk category of loans evaluated by internal asset classification
Total	2,238	3,115
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	8,884	8,945
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	0	610
Special Mention \| Single family
Risk category of loans evaluated by internal asset classification
Total	0	0
Special Mention \| Multifamily
Risk category of loans evaluated by internal asset classification
Total	0	0
Special Mention \| Non-owner occupied
Risk category of loans evaluated by internal asset classification
Total	0	396
Special Mention \| Owner occupied
Risk category of loans evaluated by internal asset classification
Total	0	0
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	214
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	3,463	1,852
Substandard \| Single family
Risk category of loans evaluated by internal asset classification
Total	1,998	1,755
Substandard \| Multifamily
Risk category of loans evaluated by internal asset classification
Total	0	0
Substandard \| Non-owner occupied
Risk category of loans evaluated by internal asset classification
Total	0	0
Substandard \| Owner occupied
Risk category of loans evaluated by internal asset classification
Total	836	0
Substandard \| Construction and land development
Risk category of loans evaluated by internal asset classification
Total	1	2
Substandard \| Commercial business
Risk category of loans evaluated by internal asset classification
Total	534	0
Substandard \| Home equity lines of credit
Risk category of loans evaluated by internal asset classification
Total	94	95
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	0
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 \| Non-owner occupied
Risk category of loans evaluated by internal asset classification
Total	0	0
Doubtful \| Owner occupied
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
Loans (Details 4) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015
Allowance for loan losses
Balance, beginning	$ 5,244	$ 4,598
Provision for loan losses	200	150
Loans charge-off	0	(10)
Recoveries	7	9
Balance, ending	5,451	4,747
Period-ended amount allocated for:
Individually evaluated for impairment			$ 54		$ 78
Collectively evaluated for impairment			5,397		4,669
Ending Balance	5,244	4,598	5,451	$ 5,244	4,747
Loans:
Individually evaluated for impairment			3,255		3,515
Collectively evaluated for impairment			545,515		498,079
Total Loans			548,770	539,141	501,594
Real Estate
Loans:
Total Loans			485,079	479,473
Single family
Allowance for loan losses
Balance, beginning	980	1,073
Provision for loan losses	(57)	(42)
Loans charge-off	0	0
Recoveries	0	0
Balance, ending	923	1,031
Period-ended amount allocated for:
Individually evaluated for impairment			3		23
Collectively evaluated for impairment			920		1,008
Ending Balance	980	1,073	923	980	1,031
Loans:
Individually evaluated for impairment			1,447		1,605
Collectively evaluated for impairment			150,944		149,385
Total Loans			152,391	158,541	150,990
Multifamily
Allowance for loan losses
Balance, beginning	1,015	1,013
Provision for loan losses	(32)	327
Loans charge-off	0	0
Recoveries	0	0
Balance, ending	983	1,340
Period-ended amount allocated for:
Individually evaluated for impairment			0		0
Collectively evaluated for impairment			983		1,340
Ending Balance	1,015	1,013	983	1,015	1,340
Loans:
Individually evaluated for impairment			1,722		1,816
Collectively evaluated for impairment			114,224		116,873
Total Loans			115,946	123,623	118,689
Non-owner occupied
Allowance for loan losses
Balance, beginning	1,519	1,091
Provision for loan losses	65	31
Loans charge-off	0	0
Recoveries	0	0
Balance, ending	1,584	1,122
Period-ended amount allocated for:
Individually evaluated for impairment			0		0
Collectively evaluated for impairment			1,584		1,122
Ending Balance	1,519	1,091	1,584	1,519	1,122
Loans:
Individually evaluated for impairment			0		0
Collectively evaluated for impairment			127,574		112,482
Total Loans			127,574	117,971	112,482
Owner occupied
Allowance for loan losses
Balance, beginning	813	513
Provision for loan losses	129	16
Loans charge-off	0	0
Recoveries	0	1
Balance, ending	942	530
Period-ended amount allocated for:
Individually evaluated for impairment			0		0
Collectively evaluated for impairment			942		530
Ending Balance	813	513	942	813	530
Loans:
Individually evaluated for impairment			0		0
Collectively evaluated for impairment			69,973		51,033
Total Loans			69,973	63,108	51,033
Construction and land development
Allowance for loan losses
Balance, beginning	344	330
Provision for loan losses	59	14
Loans charge-off	0	0
Recoveries	0	0
Balance, ending	403	344
Period-ended amount allocated for:
Individually evaluated for impairment			0		0
Collectively evaluated for impairment			403		344
Ending Balance	344	330	403	344	344
Loans:
Individually evaluated for impairment			0		0
Collectively evaluated for impairment			19,195		17,163
Total Loans			19,195	16,230	17,163
Commercial business
Allowance for loan losses
Balance, beginning	500	498
Provision for loan losses	39	(200)
Loans charge-off	0	0
Recoveries	5	4
Balance, ending	544	302
Period-ended amount allocated for:
Individually evaluated for impairment			0		0
Collectively evaluated for impairment			544		302
Ending Balance	500	498	544	500	302
Loans:
Individually evaluated for impairment			0		0
Collectively evaluated for impairment			45,025		31,866
Total Loans			45,025	40,836	31,866
Consumer and other
Allowance for loan losses
Balance, beginning	73	80
Provision for loan losses	(3)	4
Loans charge-off	0	(10)
Recoveries	2	4
Balance, ending	72	78
Period-ended amount allocated for:
Individually evaluated for impairment			51		55
Collectively evaluated for impairment			21		23
Ending Balance	$ 73	$ 80	72	73	78
Loans:
Individually evaluated for impairment			86		94
Collectively evaluated for impairment			18,580		19,277
Total Loans			$ 18,666	$ 18,832	$ 19,371

Loans (Details 5)

Loans (Details 5) - USD ($) $ in Thousands	3 Months Ended
Loans (Details 5) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Unpaid Principal Balance
Total	$ 3,515	$ 3,810
Recorded Investment
Total	3,255	3,515
Allowance for Loan Losses Allocated
With an allowance recorded	54	78
Average Recorded Investment
Total	3,274	3,585
Interest Income Recognized
Total	36	37
Single family
Unpaid Principal Balance
With no related allowance recorded	1,309	1,338
With an allowance recorded	273	411
Recorded Investment
With no related allowance recorded	1,174	1,194
With an allowance recorded	273	411
Allowance for Loan Losses Allocated
With an allowance recorded	3	23
Average Recorded Investment
With no related allowance recorded	1,315	1,189
With an allowance recorded	137	412
Interest Income Recognized
With no related allowance	12	14
With related allowance	5	3
Multifamily
Unpaid Principal Balance
With no related allowance recorded	1,764	1,889
With an allowance recorded	0	0
Recorded Investment
With no related allowance recorded	1,722	1,816
With an allowance recorded	0	0
Allowance for Loan Losses Allocated
With an allowance recorded	0	0
Average Recorded Investment
With no related allowance recorded	1,734	1,824
With an allowance recorded	0	0
Interest Income Recognized
With no related allowance	18	19
With related allowance	0	0
Non-owner occupied
Unpaid Principal Balance
With no related allowance recorded	0	0
With an allowance recorded	0	0
Recorded Investment
With no related allowance recorded	0	0
With an allowance recorded	0	0
Allowance for Loan Losses Allocated
With an allowance recorded	0	0
Average Recorded Investment
With no related allowance recorded	0	0
With an allowance recorded	0	0
Interest Income Recognized
With no related allowance	0	0
With related allowance	0	0
Owner occupied
Unpaid Principal Balance
With no related allowance recorded	0	0
With an allowance recorded	0	0
Recorded Investment
With no related allowance recorded	0	0
With an allowance recorded	0	0
Allowance for Loan Losses Allocated
With an allowance recorded	0	0
Average Recorded Investment
With no related allowance recorded	0	0
With an allowance recorded	0	0
Interest Income Recognized
With no related allowance	0	0
With related allowance	0	0
Construction and land development
Unpaid Principal Balance
With no related allowance recorded	4	0
With an allowance recorded	0	0
Recorded Investment
With no related allowance recorded	0	0
With an allowance recorded	0	0
Allowance for Loan Losses Allocated
With an allowance recorded	0	0
Average Recorded Investment
With no related allowance recorded	0	0
With an allowance recorded	0	0
Interest Income Recognized
With no related allowance	0	0
With related allowance	0	0
Commercial business
Unpaid Principal Balance
With no related allowance recorded	0	0
With an allowance recorded	0	0
Recorded Investment
With no related allowance recorded	0	0
With an allowance recorded	0	0
Allowance for Loan Losses Allocated
With an allowance recorded	0	0
Average Recorded Investment
With no related allowance recorded	0	0
With an allowance recorded	0	0
Interest Income Recognized
With no related allowance	0	0
With related allowance	0	0
Consumer and other
Unpaid Principal Balance
With no related allowance recorded	114	117
With an allowance recorded	51	55
Recorded Investment
With no related allowance recorded	35	39
With an allowance recorded	51	55
Allowance for Loan Losses Allocated
With an allowance recorded	51	55
Average Recorded Investment
With no related allowance recorded	36	105
With an allowance recorded	52	55
Interest Income Recognized
With no related allowance	0	0
With related allowance	$ 1	$ 1

Loans (Details 6)

Loans (Details 6)	3 Months Ended
Loans (Details 6)	Dec. 31, 2016USD ($)contract	Dec. 31, 2015USD ($)contract	Sep. 30, 2016USD ($)
Troubled debt restructured loans
Troubled debt restructurings - accrual	$ 0		$ 0
Modified Trouble Debt Restructurings
Number of Modifications \| contract	0	0
Unpaid Principal Balance (at end of period)	$ 0	$ 0
Loans Modified in a Trouble Debt Restructuring [Abstract]
Number of re-defaults of TDR \| contract	0	0
Past due loans
Troubled debt restructured loans
Troubled debt restructurings - accrual	$ 2,719,000		3,021,000
Troubled debt restructurings - nonaccrual	0		0
Troubled debt restructurings	$ 2,719,000		$ 3,021,000

Loans Loans (Details 7)

Loans Loans (Details 7) - USD ($) $ in Thousands	3 Months Ended
Loans Loans (Details 7) - USD ($) $ in Thousands	Dec. 31, 2016	Sep. 30, 2016
Loans and Leases Receivable, Related Parties [Roll Forward]
Loans outstanding to officers, employees, directors, and their associates	$ 9,747	$ 7,813
Loans and Leases Receivable, Related Parties, Additions	2,468
Loans and Leases Receivable, Related Parties, Amount Drawn Upon During Period	29
Loans and Leases Receivable, Related Parties, Collections	$ (563)

Deposits (Details)

Deposits (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Sep. 30, 2016
Negotiable order for withdrawal accounts:
Noninterest bearing	$ 127,670	$ 111,841
Interest bearing	141,089	135,866
Gross total	268,759	247,707
Passbook and Statement Savings	134,214	133,155
Variable Rate Money Market Accounts	71,309	64,593
Certificates of Deposit	155,570	146,522
Deposits	$ 629,852	$ 591,977
Negotiable order for withdrawal accounts:
Noninterest bearing (as a percent)	20.27%	18.89%
Interest bearing (as a percent)	22.40%	22.95%
Gross total (as a percent)	42.67%	41.84%
Passbook and Statement Savings (as a percent)	21.31%	22.50%
Variable Rate Money Market Accounts (as a percent)	11.32%	10.91%
Certificates of Deposit (as a percent)	24.70%	24.75%
Deposits (as a percent)	100.00%	100.00%
Certificates of Deposit over one hundred thousand dollars	$ 97,293	$ 89,588
Certificates of Deposit over two hundred fifty thousand dollars	$ 29,146	$ 26,154

Regulatory Capital (Details)

Regulatory Capital (Details) - Westbury Bank - USD ($) $ in Thousands	Dec. 31, 2016	Sep. 30, 2016
Total capital (to risk-weighted assets), Amount
Actual	$ 77,463	$ 76,627
For Capital Adequacy Purposes	47,620	45,283
For Capital Adequacy Purposes with Capital Buffer	51,341	48,821
To be Well Capitalized Under Prompt Corrective Action Provisions	$ 59,525	$ 56,604
Total capital (to risk-weighted assets), Ratio
Actual (as a percent)	13.01%	13.54%
For Capital Adequacy Purposes (as a percent)	8.00%	8.00%
For Capital Adequacy with Capital Buffer (as a percent)	8.625%	8.625%
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	$ 72,012	$ 71,383
For Capital Adequacy Purposes	35,715	33,963
For Capital Adequacy Purposes with Capital Buffer	39,436	37,500
To be Well Capitalized Under Prompt Corrective Action Provisions	$ 47,620	$ 45,283
Tier 1 capital (to risk-weighted assets), Ratio
Actual (as a percent)	12.10%	12.61%
For Capital Adequacy Purposes (as a percent)	6.00%	6.00%
For Capital Adequacy with Capital Buffer (as a percent)	6.625%	6.625%
To be Well Capitalized Under Prompt Corrective Action Provisions (as a percent)	8.00%	8.00%
CETI capital (to risk-weighted assets), Amount
Actual	$ 72,012	$ 71,383
For Capital Adequacy Purposes Under Prompt Corrective Action Provisions	26,786	25,472
For Capital Adequacy Purposes with Capital Buffer	30,507	29,010
To Be Well Capitalized Under Prompt Corrective Action Provisions	$ 38,692	$ 36,793
CETI capital (to risk-weighted assets), Ratio
Actual (as a percent)	12.10%	12.61%
For Capital Adequacy Purposes (as a percent)	4.50%	4.50%
For Capital Adequacy with Capital Buffer (as a pecent)	5.125%	5.125%
To Be Well Capitalized Under Prompt Corrective Action Provisions (as a percent)	6.50%	6.50%
Tier 1 capital (to adjusted total assets), Amount
Actual	$ 72,012	$ 71,383
For Capital Adequacy Purposes	28,323	27,911
To be Well Capitalized Under Prompt Corrective Action Provisions	$ 35,404	$ 34,889
Tier 1 capital (to adjusted total assets), Ratio
Actual (as a percent)	10.17%	10.23%
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	3 Months Ended	12 Months Ended
	Dec. 31, 2016	Sep. 30, 2015	Sep. 30, 2016	Dec. 31, 2015
Regulatory Capital
Stockholders' equity	$ 78,312	$ 78,812	$ 79,629	$ 79,118
Westbury Bank
Regulatory Capital
Stockholders' equity	72,020		73,332
Unrealized (gain) loss on securities	1,290	$ (561)
Disallowed deferred tax assets	(1,298)		(1,388)
Tier 1 and tangible capital	72,012		71,383
Plus: Allowable general valuation allowances	5,451		5,244
Actual	$ 77,463		$ 76,627

Commitments (Details)

Commitments (Details) - USD ($)	3 Months Ended
Commitments (Details) - USD ($)	Dec. 31, 2016	Sep. 30, 2016
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	17,776,000	2,013,000
Adjustable rate commitments to extend mortgage credit
Financial Instruments with Off-Balance Sheet Risk
Financial instruments whose contract amounts represent credit risk	6,909,000	1,442,000
Standby letters of credit
Financial Instruments with Off-Balance Sheet Risk
Financial instruments whose contract amounts represent credit risk	$ 1,122,000	1,076,000
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	$ 1,156,000	1,881,000
Commercial Loan [Member] \| Unused commercial loan lines of credit
Financial Instruments with Off-Balance Sheet Risk
Financial instruments whose contract amounts represent credit risk	69,995,000	68,752,000
Home Equity Loan [Member] \| Unused commercial loan lines of credit
Financial Instruments with Off-Balance Sheet Risk
Financial instruments whose contract amounts represent credit risk	$ 27,045,000	$ 27,315,000

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Thousands	3 Months Ended
Fair Value Measurements (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Sep. 30, 2016
Assets
Securities available-for-sale	$ 101,997	$ 93,772
U.S. Government and agency securities
Assets
Securities available-for-sale	25	25
U.S. Government agency residential mortgage-backed securities
Assets
Securities available-for-sale	44,516	40,750
U.S. Government agency collateralized mortgage obligations
Assets
Securities available-for-sale	3,965	2,680
U.S. Government agency commercial mortgage-backed securities
Assets
Securities available-for-sale	13,810	11,526
Municipal securities-tax exempt
Assets
Securities available-for-sale	26,993	25,682
Municipal securities-taxable
Assets
Securities available-for-sale	12,688	13,109
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	$ 101,997	93,772
Derivatives		98
Liabilities
Derivatives	0	98
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 \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Municipal securities-tax exempt
Assets
Securities available-for-sale	0	0
Recurring basis \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Municipal securities-taxable
Assets
Securities available-for-sale	0
Recurring basis \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Corporate Debt Securities [Member]
Assets
Securities available-for-sale	0	0
Recurring basis \| Significant Other Observable Inputs (Level 2)
Assets
Securities available-for-sale	101,997	93,772
Derivatives	0	98
Liabilities
Derivatives	0	98
Recurring basis \| Significant Other Observable Inputs (Level 2) \| U.S. Government and agency securities
Assets
Securities available-for-sale	25	25
Recurring basis \| Significant Other Observable Inputs (Level 2) \| U.S. Government agency residential mortgage-backed securities
Assets
Securities available-for-sale	44,516	40,750
Recurring basis \| Significant Other Observable Inputs (Level 2) \| U.S. Government agency collateralized mortgage obligations
Assets
Securities available-for-sale	3,965	2,680
Recurring basis \| Significant Other Observable Inputs (Level 2) \| U.S. Government agency commercial mortgage-backed securities
Assets
Securities available-for-sale	13,810	11,526
Recurring basis \| Significant Other Observable Inputs (Level 2) \| Municipal securities-tax exempt
Assets
Securities available-for-sale	26,993	25,682
Recurring basis \| Significant Other Observable Inputs (Level 2) \| Municipal securities-taxable
Assets
Securities available-for-sale	12,688	13,109
Recurring basis \| Significant Other Observable Inputs (Level 2) \| Corporate Debt Securities [Member]
Assets
Securities available-for-sale	0	0
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
Recurring basis \| Significant Other Unobservable Inputs (Level 3) \| Municipal securities-tax exempt
Assets
Securities available-for-sale	0	0
Recurring basis \| Significant Other Unobservable Inputs (Level 3) \| Municipal securities-taxable
Assets
Securities available-for-sale	0
Recurring basis \| Significant Other Unobservable Inputs (Level 3) \| Corporate Debt Securities [Member]
Assets
Securities available-for-sale	0	0
Total
Assets
Securities available-for-sale	101,997	93,772
Derivatives		98
Liabilities
Derivatives	0	98
Total \| Recurring basis
Assets
Securities available-for-sale	101,997	93,772
Derivatives	0	98
Liabilities
Derivatives	0	98
Total \| Recurring basis \| U.S. Government and agency securities
Assets
Securities available-for-sale	25	25
Total \| Recurring basis \| U.S. Government agency residential mortgage-backed securities
Assets
Securities available-for-sale	44,516	40,750
Total \| Recurring basis \| U.S. Government agency collateralized mortgage obligations
Assets
Securities available-for-sale	3,965	2,680
Total \| Recurring basis \| U.S. Government agency commercial mortgage-backed securities
Assets
Securities available-for-sale	13,810	11,526
Total \| Recurring basis \| Municipal securities-tax exempt
Assets
Securities available-for-sale	26,993	25,682
Total \| Recurring basis \| Municipal securities-taxable
Assets
Securities available-for-sale	12,688	13,109
Total \| Recurring basis \| Corporate Debt Securities [Member]
Assets
Securities available-for-sale	$ 0	$ 0

Fair Value Measurements (Deta47

Fair Value Measurements (Details 2) - USD ($) $ in Thousands	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015
Assets measured at fair value on a nonrecurring basis
Impaired loans, valuation allowance	$ 54		$ 78
Foreclosed real estate	0	$ 99
Significant Other Unobservable Inputs (Level 3)
Assets measured at fair value on a nonrecurring basis
Mortgage servicing rights	841	800
Carrying Amount
Assets measured at fair value on a nonrecurring basis
Mortgage servicing rights	841	800
Total
Assets measured at fair value on a nonrecurring basis
Mortgage servicing rights	841	800
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	55	52
Mortgage servicing rights, valuation allowance	105	212
Impaired loans	270	0
Foreclosed real estate	0	99
Mortgage servicing rights	841	800
Nonrecurring Basis \| Carrying Amount \| Significant Other Unobservable Inputs (Level 3)
Assets measured at fair value on a nonrecurring basis
Impaired loans	325	52
Mortgage servicing rights	946	1,012
Nonrecurring Basis \| Total
Assets measured at fair value on a nonrecurring basis
Impaired loans	270	0
Foreclosed real estate	0	99
Mortgage servicing rights	$ 841	$ 800

Fair Value Measurements (Deta48

Fair Value Measurements (Details 3) - USD ($) $ in Thousands	Dec. 31, 2016	Sep. 30, 2016
Financial assets:
Securities available-for-sale	$ 101,997	$ 93,772
Securities held to maturity	2,293	2,293
Federal Home Loan Bank stock	1,330	1,330
Financial liabilities:
Long-term advances from Federal Home Loan Bank	20,000	20,000
Advance payments by borrowers for property taxes and insurance	550	5,455
Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial assets:
Cash and cash equivalents	41,996	29,613
Securities held to maturity	0	0
Accrued interest receivable	2,299	2,173
Financial liabilities:
Deposits	127,670	111,841
Short-term advances from Federal Home Loan Bank	0	0
Long-term advances from Federal Home Loan Bank	0	0
Advance payments by borrowers for property taxes and insurance	550	5,455
Accrued interest payable	7	5
Derivative liability	0	0
Significant Other Observable Inputs (Level 2)
Financial assets:
Securities available-for-sale	101,997	93,772
Securities held to maturity	2,316	2,392
Loans held for sale, net	1,156	1,881
Derivative asset		98
Financial liabilities:
Deposits	0	0
Short-term advances from Federal Home Loan Bank	0	0
Long-term 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	98
Significant Other Unobservable Inputs (Level 3)
Financial assets:
Securities held to maturity	0	0
Loans, net	540,680	536,434
Federal Home Loan Bank stock	1,330	1,330
Mortgage servicing rights	841	800
Financial liabilities:
Deposits	467,115	462,946
Short-term advances from Federal Home Loan Bank	0	0
Long-term advances from Federal Home Loan Bank	18,785	19,472
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	41,996	29,613
Securities available-for-sale	101,997	93,772
Securities held to maturity	2,293	2,293
Loans, net	543,220	533,759
Loans held for sale, net	1,156	1,881
Federal Home Loan Bank stock	1,330	1,330
Mortgage servicing rights	841	800
Accrued interest receivable	2,299	2,173
Derivative asset		98
Financial liabilities:
Deposits	629,852	591,977
Short-term advances from Federal Home Loan Bank	0	0
Long-term advances from Federal Home Loan Bank	20,000	20,000
Advance payments by borrowers for property taxes and insurance	550	5,455
Accrued interest payable	7	5
Derivative liability	0	98
Estimated Fair Value
Financial assets:
Cash and cash equivalents	41,996	29,613
Securities available-for-sale	101,997	93,772
Securities held to maturity	2,316	2,392
Loans, net	540,680	536,434
Loans held for sale, net	1,156	1,881
Federal Home Loan Bank stock	1,330	1,330
Mortgage servicing rights	841	800
Accrued interest receivable	2,299	2,173
Derivative asset		98
Financial liabilities:
Deposits	594,785	574,787
Short-term advances from Federal Home Loan Bank	0	0
Long-term advances from Federal Home Loan Bank	18,785	19,472
Advance payments by borrowers for property taxes and insurance	550	5,455
Accrued interest payable	7	5
Derivative liability	$ 0	$ 98

Employee Stock Ownership Plan (

Employee Stock Ownership Plan (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Sep. 30, 2016	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	10,285	5,142
ESOP compensation expense	$ 207	$ 91
Allocated shares to active participants	52,759		52,773
Shares committed to be released	41,140		30,855
Unallocated shares	308,553		318,838
Total ESOP shares	402,452		402,466	411,403
Fair value of unallocated shares	$ 6,387		$ 6,227

Compensation Equity Plans Cost

Compensation Equity Plans Cost of Share-based Payment Plans (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Total cost of stock grant plan during the period	$ 134	$ 151
Total cost of stock option plan during the period	64	57
Total cost of share-based payment plans during the period	198	208
Amount of related income tax benefit recognized in income	$ 78	$ 82

Compensation Equity Plans Stock

Compensation Equity Plans Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Number of Options
Options outstanding, beginning balance (shares)	474,132
Granted (shares)	2,750
Exercised (shares)	0	4,298
Expired or canceled (shares)	150
Forfeited (shares)	12,547
Options outstanding, ending balance (shares)	464,185
Options exercisable as of June 30, 2015 (shares)	135,657
Weighted Average Exercise Price
Options outstanding, beginning balance (in dollars per share)	$ 16.46
Granted (in dollars per share)	21
Exercised (in dollars per share)	0
Expired or canceled (in dollars per share)	17.35
Forfeited (in dollars per share)	16.15
Options outstanding, ending balance (in dollars per share)	16.49
Options exercisable as of March 31, 2015 (in dollars per share)	$ 15.49
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Outstanding, Weighted Average Remaining Contractual Term	8 years 22 days
Outstanding, Aggregate Intrinsic Value	$ 1,953
Options Exercisable, Weighted Average Remaining Contractual Term	7 years 7 months 13 days
Options Exercisable, Aggregate Intrinsic Value	$ 707

Compensation Equity Plans Assum

Compensation Equity Plans Assumptions (Details) - $ / shares	3 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Risk-free interest rate	2.19%	1.99%
Expected volatility of Company's stock	15.74%	7.44%
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 period	$ 5.14	$ 2.89

Compensation Equity Plans Restr

Compensation Equity Plans Restricted Shares (Details) - Restricted Shares and Units	3 Months Ended
	Dec. 31, 2016$ / sharesshares
Number of Shares
Shares Outstanding at September 30, 2014 \| shares	114,883
Granted \| shares	7,500
Vested \| shares	0
Forfeited \| shares	4,278
Shares Outstanding at June 30, 2015 \| shares	118,105
Weighted Average Grant Date Fair Value
Shares Outstanding at September 30, 2014 (in dollars per share) \| $ / shares	$ 15.20
Granted (in dollars per share) \| $ / shares	21.50
Vested (in dollars per share) \| $ / shares	0
Forfeited (in dollars per share) \| $ / shares	15.20
Shares Outstanding at March 31, 2015 (in dollars per share) \| $ / shares	$ 15.60

Compensation Equity Plans Narra

Compensation Equity Plans Narrative (Details) - USD ($)	3 Months Ended
Compensation Equity Plans Narrative (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 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	$ 0	$ 10,000
Intrinsic value of restricted shares vested during the period	0	$ 0
Compensation cost not yet recognized	$ 2,400,000
Period for recognition	3 years 7 days
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	5,536
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	34,784

Condensed Parent Company Fina55

Condensed Parent Company Financial Information Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and interest bearing deposits	$ 41,996	$ 29,613	$ 40,060	$ 16,488
Other assets	4,098	4,010
Total assets	732,996	702,625
Other liabilities	4,282	5,564
Stockholders' equity	78,312	79,629	$ 79,118	$ 78,812
Liabilities and Equity	732,996	702,625
Parent Company
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and interest bearing deposits	611	251
Investments	46	55
Loan to ESOP	3,197	3,620
Investment in subsidiary	74,352	75,872
Other assets	2,477	2,397
Total assets	80,683	82,195
Other liabilities	38	26
Stockholders' equity	80,645	82,169
Liabilities and Equity	$ 80,683	$ 82,195

Condensed Parent Company Fina56

Condensed Parent Company Financial Information Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Condensed Income Statements, Captions [Line Items]
Net income	$ 747	$ 1,039
Parent Company
Condensed Income Statements, Captions [Line Items]
Interest and other income	32	32
Interest and other expense	142	121
Loss before income tax benefit and equity in undistributed net income of subsidiary	(110)	(89)
Income tax benefit	(26)	(18)
Loss before equity in undistributed net income of subsidiary	(84)	(71)
Equity in undistributed net income of subsidiary	831	1,110
Net income	$ 747	$ 1,039

Condensed Parent Company Fina57

Condensed Parent Company Financial Information Statement of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net income	$ 747	$ 1,039
Net change in other assets	(88)	(391)
Net cash provided by operating activities	(3,600)	(4,742)
Net Cash Provided by (Used in) Investing Activities [Abstract]
Purchase of securities	(15,226)	(12,375)
Net cash provided by investing activities	(21,274)	(8,868)
Net Cash Provided by (Used in) Financing Activities [Abstract]
Stock options exercised	0	64
Repurchase of common stock	(618)	(506)
Net cash used in financing activities	37,257	37,182
Parent Company
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net income	747	1,039
Equity in undistributed net income of subsidiary	(831)	(1,110)
Net change in other liabilities	12	(32)
Net change in other assets	118	742
Net cash provided by operating activities	46	639
Net Cash Provided by (Used in) Investing Activities [Abstract]
Sales and maturities of securities	9	29
Payments received on ESOP loan	423	158
Dividend received from bank subsidiary	(500)	(1,500)
Net cash provided by investing activities	932	1,687
Net Cash Provided by (Used in) Financing Activities [Abstract]
Stock options exercised	0	64
Repurchase of common stock	(618)	(506)
Net cash used in financing activities	(618)	(442)
Net increase in cash	360	1,884
Beginning of period	251	1,440
End of period	$ 611	$ 3,324