Timberland Bancorp (TSBK) 10-Q 8 Feb 19 2019 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Dec. 31, 2018	Feb. 01, 2019
Document and Entity Information
Entity Registrant Name	TIMBERLAND BANCORP INC,
Entity Central Index Key	1,046,050
Current Fiscal Year End Date	--09-30
Entity Filer Category	Smaller Reporting Company
Document Type	10-Q
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2,019
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding		8,313,403

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($)	Dec. 31, 2018	Sep. 30, 2018
Cash and cash equivalents:
Cash and due from financial institutions	$ 18,938,000	$ 20,238,000	[1]
Interest-bearing deposits in banks	142,805,000	128,626,000	[1]
Total cash and cash equivalents	161,743,000	148,864,000	[1]
Certificates of deposit (“CDs”) held for investment (at cost, which approximates fair value)	65,830,000	63,290,000	[1]
Investment securities held to maturity, at amortized cost (estimated fair value $32,472 and $13,264)	31,950,000	12,810,000	[1]
Investment securities available for sale, at fair value	2,197,000	237,000	[1]
Investments in equity securities, at fair value	925,000	917,000
Federal Home Loan Bank of Des Moines (“FHLB”) stock	1,395,000	1,190,000	[1]
Other investments, at cost	3,000,000	3,000,000	[1]
Loans held for sale	2,988,000	1,785,000	[1]
Loans receivable, net of allowance for loan losses of $9,533 and $9,530	857,070,000	725,391,000	[1]
Premises and equipment, net	22,884,000	18,953,000	[1]
Other real estate owned (“OREO”) and other repossessed assets, net	2,026,000	1,913,000	[1]
Accrued interest receivable	3,497,000	2,877,000	[1]
Bank owned life insurance (“BOLI”)	22,599,000	19,813,000	[1]
Goodwill	14,620,000	5,650,000	[1]
Core deposit intangible (“CDI”), net	2,374,000	0
Mortgage servicing rights (“MSRs”), net	2,338,000	2,028,000	[1]
Escrow deposit for business combination	0	6,900,000
Other assets	2,879,000	2,672,000	[1]
Total assets	1,200,315,000	1,018,290,000	[1]
Deposits:
Non-interest-bearing demand	271,251,000	233,258,000	[1]
Interest-bearing	763,926,000	656,248,000	[1]
Total deposits	1,035,177,000	889,506,000	[1]
Other liabilities and accrued expenses	8,233,000	4,127,000	[1]
Total liabilities	1,043,410,000	893,633,000	[1]
Shareholders’ equity
Preferred stock, $0.01 par value; 1,000,000 shares authorized; none issued	0	0	[2]
Common stock, $0.01 par value; 50,000,000 shares authorized; 8,313,403 shares issued and outstanding - December 31, 2018 7,401,177 shares issued and outstanding - September 30, 2018	42,951,000	14,394,000	[2]
Unearned shares issued to Employee Stock Ownership Plan (“ESOP”)	(67,000)	(133,000)	[2]
Retained earnings	114,166,000	110,525,000	[2]
Accumulated other comprehensive loss	(145,000)	(129,000)	[2]
Total shareholders’ equity	156,905,000	124,657,000	[2]
Total liabilities and shareholders’ equity	$ 1,200,315,000	$ 1,018,290,000	[2]
[1]	Derived from audited consolidated financial statements.
[2]	Derived from audited consolidated financial statements.

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2018	Sep. 30, 2018
Statement of Financial Position [Abstract]
Investments securities held to maturity, estimated fair value	$ 32,472	$ 13,264
Allowance for loan losses	$ 9,533	$ 9,530
Preferred stock par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock shares authorized (shares)	1,000,000	1,000,000
Preferred stock shares issued (shares)	0	0
Common stock par value (in dollars per share)	$ 0.01	$ 0.01
Common stock shares authorized (shares)	50,000,000	50,000,000
Common stock shares issued (shares)	8,313,403	7,401,177
Common stock shares outstanding (shares)	8,313,403	7,401,177

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Interest and dividend income
Loans receivable and loans held for sale	$ 11,782	$ 9,328
Investment securities	278	58
Dividends from mutual funds, FHLB stock and other investments	39	26
Interest-bearing deposits in banks and CDs	1,216	623
Total interest and dividend income	13,315	10,035
Interest expense
Deposits	971	601
Total interest expense	971	601
Net interest income	12,344	9,434
Provision for loan losses	0	0
Net interest income after provision for loan losses	12,344	9,434
Non-interest income
Recoveries (other than temporary impairment OTTI) on investment securities	(11)	(27)
Adjustment for portion of OTTI transferred from other comprehensive income (loss) before income taxes	0	(5)
Net recoveries on investment securities	(11)	(22)
Service charges on deposits	1,216	1,179
ATM and debit card interchange transaction fees	949	845
BOLI net earnings	157	136
Gain on sales of loans, net	386	521
Escrow fees	56	59
Servicing income on loans sold	148	116
Fee income from non-deposit investment sales	31	19
Other, net	312	240
Total non-interest income, net	3,266	3,137
Non-interest expense
Salaries and employee benefits	4,606	3,950
Premises and equipment	954	768
Advertising	191	209
OREO and other repossessed assets, net	50	113
ATM and debit card interchange transaction fees	422	331
Postage and courier	110	105
Amortization of CDI	109	0
State and local taxes	196	161
Professional fees	265	218
Federal Deposit Insurance Corporation (FDIC) insurance	74	65
Loan administration and foreclosure	87	79
Data processing and telecommunications	673	467
Deposit operations	294	278
Other	531	432
Total non-interest expense	8,562	7,176
Income before income taxes	7,048	5,395
Provision for income taxes	1,433	1,781
Net income	$ 5,615	$ 3,614
Net income per common share
Basic (in dollars per share)	$ 0.68	$ 0.49
Diluted (in dollars per share)	$ 0.66	$ 0.48
Weighted average common shares outstanding
Basic (in shares)	8,293,212	7,312,531
Diluted (in shares)	8,457,703	7,508,169
Dividends paid per common share (in dollars per share)	$ 0.23	$ 0.11

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Comprehensive income
Net income	$ 5,615	$ 3,614
Unrealized holding loss on investment securities available for sale, net of income taxes of ($22) and ($2), respectively	(86)	(7)
Change in OTTI on investment securities held to maturity, net of income taxes:
Adjustments related to other factors for which OTTI was previously recognized, net of income taxes of ($1) and ($6), respectively	(3)	(21)
Amount reclassified to credit loss for previously recorded market loss, net of income taxes of $0 and $1, respectively	0	4
Accretion of OTTI on investment securities held to maturity, net of income taxes of $3 and $3, respectively	10	12
Total other comprehensive loss, net of income taxes	(79)	(12)
Total comprehensive income	$ 5,536	$ 3,602

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Unrealized holding loss on investment securities available for sale, tax	$ (22)	$ 2
Adjustments related to other factors for which OTTI was previously recognized, tax	(1)	(6)
Amount reclassified to credit loss for previously recorded market loss, tax	0	1
Accretion of OTTI on investment securities held to maturity, tax	$ 3	$ 3

Consolidated Statements of Shar

Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total		Stock Options	Number of Shares	Number of SharesStock Options	Unearned Shares Issued to ESOP	Retained Earnings	Accumulated Other Comprehensive Loss
Balance at beginning of period (in shares) at Sep. 30, 2017				7,361,077
Balance at beginning of period at Sep. 30, 2017	$ 111,000			$ 13,286		$ (397)	$ 98,235	$ (124)	[1]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,614						3,614
Other comprehensive income (loss)	$ (12)							(12)
Exercise of stock options (in shares)	6,250			6,250
Exercise of stock options	$ 61			$ 61
Common stock dividends ($0.11 and $0.23 per share, respectively)	(810)						(810)
Earned ESOP shares, net of income taxes	215			$ 149		66
Stock option compensation expense			$ 44		$ 44
Balance at end of period (in shares) at Dec. 31, 2017				7,367,327
Balance at end of period at Dec. 31, 2017	114,112			$ 13,540		(331)	101,039	(136)	[1]
Balance at beginning of period (in shares) at Sep. 30, 2018				7,401,177
Balance at beginning of period at Sep. 30, 2018	124,657	[2]		$ 14,394		(133)	110,525	(129)	[1]
Balance at beginning of period (in shares) at Sep. 30, 2018				7,401,177
Balance at beginning of period at Sep. 30, 2018	124,657	[2]		$ 14,394		(133)	110,525	(129)	[1]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	5,615						5,615
Other comprehensive income (loss)	$ (79)							(79)
Exercise of stock options (in shares)	7,400			7,400
Exercise of stock options	$ 71			$ 71
Common stock dividends ($0.11 and $0.23 per share, respectively)	(1,911)						(1,911)
Earned ESOP shares, net of income taxes	$ 232			$ 166		66
Stock option compensation expense			$ 53		$ 53
Common stock issued for business combination (in shares)	904,826
Common stock issued for business combination	$ 28,267
Balance at end of period (in shares) at Dec. 31, 2018				8,313,403
Balance at end of period at Dec. 31, 2018	156,905			$ 42,951		$ (67)	114,166	(145)	[1]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adoption of ASU 2016-01 | Accounting Standards Update 2016-01	$ 0						$ (63)	$ 63
[1]	All amounts are net of income taxes.
[2]	Derived from audited consolidated financial statements.

Consolidated Statements of Sh_2

Consolidated Statements of Shareholders' Equity (Parentheticals) - $ / shares	3 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Number of Shares
Common stock dividends (in dollars per share)	$ 0.23	$ 0.11

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2018		Dec. 31, 2017
Cash flows from operating activities
Net income	$ 5,615		$ 3,614
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	390		310
Accretion of discount on purchased loans	(87)		0
Amortization of CDI	109		0
Earned ESOP shares	232		215
Stock option compensation expense	53		44
Net recoveries on investment securities	(11)		(22)
Change in fair value of investments in equity securities	(8)		0
Gain on sales of OREO and other repossessed assets, net	0		(12)
Provision for OREO losses	3		94
Gain on sales of loans, net	(386)		(521)
Loans originated for sale	(16,932)		(15,193)
Proceeds from sales of loans	16,115		15,906
Amortization of MSRs	153		120
BOLI net earnings	(157)		(136)
Increase in deferred loan origination fees	238		38
Net change in accrued interest receivable and other assets, and other liabilities and accrued expenses	1,447		1,301
Net cash provided by operating activities	6,774		5,758
Cash flows from investing activities
Net decrease (increase) in CDs held for investment	433		(10,494)
Proceeds from sale of investment securities available for sale	2,332		0
Proceeds from maturities and prepayments of investment securities held to maturity	580		11
Proceeds from maturities and prepayments of investment securities available for sale	644		126
Increase in loans receivable, net	(10,377)		(15,105)
Additions to premises and equipment	(984)		(199)
Cash acquired, net of cash consideration paid in business combination	14,284		0
Proceeds from sales of OREO and other repossessed assets	0		495
Net cash provided by (used in) investing activities	13,812		(25,166)
Cash flows from financing activities
Net (decrease) increase in deposits	(5,867)		38,176
Proceeds from exercise of stock options	71		61
Payment of dividends	(1,911)		(810)
Net cash (used in) provided by financing activities	(7,707)		37,427
Net increase in cash and cash equivalents	12,879		18,019
Cash and cash equivalents, at beginning of period	148,864	[1]	148,188
Cash and cash equivalents, at end of period	161,743		166,207
Supplemental disclosure of cash flow information
Income taxes paid	0		0
Interest paid	901		584
Supplemental disclosure of non-cash investing activities
Loans transferred to OREO and other repossessed assets	91		163
Other comprehensive loss related to investment securities	(79)		(12)
Business Combination (see Note 2)
Fair value of assets acquired	180,825		0
Fair value of liabilities assumed	$ 154,625		$ 0
[1]	Derived from audited consolidated financial statements.

Summary Of Significant Accounti

Summary Of Significant Accounting Policies	3 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Summary Of Significant Accounting Policies	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (a) Basis of Presentation: The accompanying unaudited consolidated financial statements for the Company were prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and with instructions for Form 10-Q and, therefore, do not include all disclosures necessary for a complete presentation of consolidated financial condition, results of operations, and cash flows in conformity with GAAP. However, all adjustments which are, in the opinion of management, necessary for a fair presentation of the interim consolidated financial statements have been included. All such adjustments are of a normal recurring nature. The unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended September 30, 2018 (“2018 Form 10-K”). The unaudited consolidated results of operations for the three months ended December 31, 2018 are not necessarily indicative of the results that may be expected for the entire fiscal year ending September 30, 2019. On October 1, 2018, the Company completed the acquisition of South Sound Bank, a Washington-state chartered bank, headquartered in Olympia, Washington ("South Sound Merger"). The Company acquired 100% of the outstanding common stock of South Sound Bank, and South Sound Bank was merged into the Bank. See Note 2 for additional information on the South Sound Merger. (b) Principles of Consolidation: The unaudited consolidated financial statements include the accounts of the Company and its wholly-owned subsidiary, the Bank, and the Bank’s wholly-owned subsidiary, Timberland Service Corporation. All significant inter-company transactions and balances have been eliminated in consolidation. (c) Operating Segment: The Company has one reportable operating segment which is defined as community banking in western Washington. (d) The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect reported amounts of assets and liabilities, and the disclosure of contingent assets and liabilities, as of the date of the consolidated balance sheets, and the reported amounts of income and expenses during the reporting period. Actual results could differ from those estimates. (e) Certain prior period amounts have been reclassified to conform to the December 31, 2018 presentation with no change to previously reported net income or total shareholders’ equity.

Business Combinations Business

Business Combinations Business Combinations	3 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
Business Combinations	BUSINESS COMBINATION On October 1, 2018 , the Company completed the South Sound Merger and South Sound Bank was merged into the Bank. The primary reason for the acquisition was to expand the Company's presence along Washington State's economically important I-5 corridor. Pursuant to the terms of the merger agreement, South Sound Bank shareholders received 0.746 of a share the Company's common stock and $5.68825 in cash per share of South Sound Bank common stock. The Company issued 904,826 shares of its common stock (valued at $28.27 million based on the Company's closing stock price on September 30, 2018 of $31.24 per share) and paid $6.90 million in cash in the transaction for total consideration paid of $35.17 million . The South Sound Merger constitutes a business combination as defined by GAAP, which establishes principles and requirements for how the acquirer in a business combination recognizes and measures in its financial statements the identifiable assets acquired and liabilities assumed. The Company was considered the acquirer in this transaction. Accordingly, the preliminary estimates of fair values of the acquired assets, including the identifiable intangible assets, and the assumed liabilities in the South Sound Merger were measured and recorded as of October 1, 2018 . The excess of the total consideration paid over the fair value of the net assets acquired was allocated to goodwill. The South Sound Merger resulted in $8.97 million of goodwill. The goodwill arising from the transaction consists largely of the synergies and expected economies of scale from combining the operations of the Company and South Sound Bank. This goodwill is not deductible for tax purposes. In most instances, determining the estimated fair values of the acquired assets and assumed liabilities requires the Company to estimate cash flows expected to result from those assets and liabilities and to discount those cash flows at the appropriate rate of interest. Differences may arise between contractually required payments and the expected cash flows at the acquisition date due to items such as estimated credit losses, prepayments or early withdrawal, and other factors. One of the most significant of those determinations relates to the valuation of acquired loans. For such loans, the excess of cash flows expected at acquisition over the estimated fair value is recognized as interest income over the remaining lives of the loans. In accordance with GAAP, there was no carry-over of South Sound Bank's previously established allowance for loan losses. The following table summarizes the fair value of consideration paid, the preliminary estimated fair values of assets acquired and liabilities assumed as of the acquisition date, and the resulting preliminary goodwill relating to the transaction: At October 1, 2018 Book Value Fair Value Adjustment Estimated Fair Value (Dollars in thousands) Total merger consideration $ 35,170 Recognized amounts of identifiable assets acquired and liabilities assumed Identifiable assets acquired: Cash and cash equivalents $ 21,187 $ — 21,187 CDs held for investment 2,973 — 2,973 FHLB stock 205 — 205 Investment securities 24,913 (189 ) 24,724 Loans receivable 123,627 (2,083 ) 121,544 Premises and equipment 3,225 112 3,337 OREO 25 — 25 Accrued interest receivable 554 — 554 BOLI 2,629 — 2,629 CDI — 2,483 2,483 MSRs 285 (4 ) 281 Other assets 883 — 883 Total assets 180,506 319 180,825 Liabilities assumed: Deposits 151,378 160 151,538 Other liabilities and accrued expenses 3,087 — 3,087 Total liabilities assumed 154,465 160 154,625 Total identifiable net assets acquired $ 26,041 $ 159 26,200 Preliminary goodwill recognized $ 8,970 Fair values on the acquisition date are preliminary and represent management's best estimates based on available information and facts and circumstances in existence as of the filing date of this report. Fair values are subject to refinement for up to one year after the closing date of the acquisition as additional information regarding the closing date fair values becomes available. The Company expects to finalize the purchase price allocation by March 31, 2019 when the valuation of tax-related matters is complete. The acquired loan portfolio was valued using Level 3 inputs (see Note 9) and included the use of present value techniques, including cash flow estimates and incorporated assumptions that the Company believes marketplace participants would use in estimating fair values. Credit discounts were included in the determination of the fair value of the loans acquired; therefore, an allowance for loan losses was not recorded at the acquisition date. Acquired loans are evaluated upon acquisition and classified as either purchased credit-impaired ("PCI") or purchased non-credit-impaired. PCI loans reflect credit deterioration since origination such that it is probable at acquisition that the Company will be unable to collect all contractually required payments. The Company determined that PCI loans acquired in the South Sound Merger were insignificant. For purchased non-credit-impaired loans, the difference between the fair value and unpaid principal balance of the loan at the acquisition date is amortized or accreted to interest income over the life of the loans. Any subsequent deterioration in credit quality is recognized by recording an allowance for loan losses. CDI represents the future economic benefit of the potential cost savings from acquiring core deposits as part of a business combination compared to the cost of alternative funding sources. CDI is amortized to non-interest expense using an accelerated method based on an estimated runoff of related deposits over a period of ten years. CDI is evaluated for impairment whenever events or changes in circumstances indicate that its carrying amount may not be recoverable, with any changes in estimated useful life accounted for prospectively over the revised remaining life. The operating results of the Company for the three months ended December 31, 2018 include the operating results produced by the net assets acquired in the South Sound Merger since the October 1, 2018 merger date. The table below presents the significant operating results of the acquired business since the October 1, 2018 merger date: Three Months Ended December 31, 2018 (Dollars in thousands) Interest income: Interest and fees on loans (1) $ 1,738 Interest income: Interest and dividends on investment securities and FHLB stock 201 Interest income: Other interest earning assets 100 Interest expense (128 ) Provision for loan losses — Non-interest income 139 Non-interest expense (2) (860 ) Net effect, pre-tax $ 1,190 (1) Includes the accretion of the fair value discount on the purchased loans of $87,000 . (2) Excludes certain compensation and employee benefits for management, and excludes certain other non-interest expenses that are impracticable to determine due to the integration of the operations for this merger. Also includes certain acquisition-related costs of $64,000 incurred by the Company. For illustrative purposes only, the following table presents certain unaudited pro forma information for the three months ended December 31, 2018 and 2017. This unaudited estimated pro forma information was calculated as if South Sound Bank had been acquired as of the beginning of the fiscal year ended September 30, 2018. This unaudited pro forma information combines the historical results of South Sound Bank with the Company's consolidated historical results and includes certain adjustments reflecting the estimated impact of certain fair value adjustments for the respective periods. The pro forma information is not indicative of what would have occurred had the transaction occurred at the beginning of the fiscal year ended September 30, 2018. The unaudited pro forma information does not consider any changes to the provision for loan losses resulting from recording loans at fair value. Additionally, the Company expects to achieve further operating cost savings and other business synergies, including revenue growth as a result of the acquisition, which are not reflected in the pro forma amounts that follow. As a result, actual amounts would have differed from the unaudited pro forma information presented. Unaudited Pro Forma Three Months Ended December 31, 2018 2017 (Dollars in thousands except per share data) Total revenues (net interest income plus non-interest income) $ 15,610 $ 14,362 Net income 5,666 3,789 Basic net income per common share 0.68 0.46 Diluted net income per common share 0.67 0.45 During the three months ended December 31, 2018 and 2017, the Company incurred acquisition-related expenses of $64,000 and $41,000 , respectively, related to the South Sound Merger, which are included in professional fees in the accompanying consolidated statement of income. South Sound Bank incurred acquisition-related expenses of $2,000 for the three months ended December 31, 2017 related to the South Sound Merger. These acquisition-related expenses incurred by the Company and South Sound Bank are not included in the unaudited pro forma information presented for the three months ended December 31, 2018 and 2017. The Company incurred acquisition-related expenses of $616,000 for the fiscal year ended September 30, 2018 related to the South Sound Merger, which were included in professional fees. The Company expects to incur additional acquisition-related expenses of approximately $580,000 over the next two quarters. These expenses are related to the conversion of South Sound Bank's current core processing and ancillary information technology systems to the Company's new core processing system.

Investment Securities

Investment Securities	3 Months Ended
	Dec. 31, 2018
Investments [Abstract]
Investment Securities	INVESTMENT SECURITIES Held to maturity and available for sale investment securities have been classified according to management’s intent and were as follows as of December 31, 2018 and September 30, 2018 (dollars in thousands): Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value December 31, 2018 Held to maturity Mortgage-backed securities ("MBS"): U.S. government agencies $ 20,551 $ 90 $ (25 ) $ 20,616 Private label residential 424 527 (2 ) 949 U.S. Treasury and U.S government agency securities 10,975 — (68 ) 10,907 Total $ 31,950 $ 617 $ (95 ) $ 32,472 Available for sale MBS: U.S. government agencies $ 2,299 $ 8 $ (110 ) $ 2,197 Total $ 2,299 $ 8 $ (110 ) $ 2,197 September 30, 2018 Held to maturity MBS: U.S. government agencies $ 1,385 $ 8 $ (21 ) $ 1,372 Private label residential 460 552 (2 ) 1,010 U.S. Treasury and U.S. government agency securities 10,965 — (83 ) 10,882 Total $ 12,810 $ 560 $ (106 ) $ 13,264 Available for sale MBS: U.S. government agencies $ 231 $ 7 $ (1 ) $ 237 Total $ 231 $ 7 $ (1 ) $ 237 Held to maturity and available for sale investment securities with unrealized losses were as follows as of December 31, 2018 (dollars in thousands): Less Than 12 Months 12 Months or Longer Total Estimated Fair Value Gross Unrealized Losses Quantity Estimated Fair Value Gross Unrealized Losses Quantity Estimated Fair Value Gross Unrealized Losses Held to maturity MBS: U.S. government agencies $ 1,443 $ (10 ) 7 $ 960 $ (15 ) 6 $ 2,403 $ (25 ) Private label residential — — — 45 (2 ) 7 45 (2 ) U.S. Treasury and U.S. government agency securities 4,970 (7 ) 1 5,936 (61 ) 2 10,906 (68 ) Total $ 6,413 $ (17 ) 8 $ 6,941 $ (78 ) 15 $ 13,354 $ (95 ) Available for sale MBS: U.S. government agencies $ 2,004 $ (110 ) 7 $ — $ — — $ 2,004 $ (110 ) Total $ 2,004 $ (110 ) 7 $ — $ — — $ 2,004 $ (110 ) Held to maturity and available for sale investment securities with unrealized losses were as follows as of September 30, 2018 (dollars in thousands): Less Than 12 Months 12 Months or Longer Total Estimated Fair Value Gross Unrealized Losses Quantity Estimated Fair Value Gross Unrealized Losses Quantity Estimated Fair Value Gross Unrealized Losses Held to maturity MBS: U.S. government agencies $ 954 $ (20 ) 2 $ 64 $ (1 ) 5 $ 1,018 $ (21 ) Private label residential — — — 50 (2 ) 8 50 (2 ) U.S. Treasury and U.S. government agency securities 7,946 (22 ) 2 2,935 (61 ) 1 10,881 (83 ) Total $ 8,900 $ (42 ) 4 $ 3,049 $ (64 ) 14 $ 11,949 $ (106 ) Available for sale MBS: U.S. government agencies $ 34 $ (1 ) 1 $ — $ — — $ 34 $ (1 ) Total $ 34 $ (1 ) 1 $ — $ — — $ 34 $ (1 ) The Company has evaluated the investment securities in the above tables and has determined that the decline in their value is temporary. The unrealized losses are primarily due to changes in market interest rates and spreads in the market for mortgage-related products. The fair value of these securities is expected to recover as the securities approach their maturity dates and/or as the pricing spreads narrow on mortgage-related securities. The Company has the ability and the intent to hold the investments until the market value recovers. Furthermore, as of December 31, 2018 , management does not have the intent to sell any of the securities classified as available for sale where the estimated fair value is below the recorded value and believes that it is more likely than not that the Company will not have to sell such securities before a recovery of cost (or recorded value if previously written down). The Company bifurcates OTTI into (1) amounts related to credit losses which are recognized through earnings and (2) amounts related to all other factors which are recognized as a component of other comprehensive income (loss). To determine the component of the gross OTTI related to credit losses, the Company compared the amortized cost basis of the OTTI security to the present value of its revised expected cash flows, discounted using its pre-impairment yield. The revised expected cash flow estimates for individual securities are based primarily on an analysis of default rates, prepayment speeds and third-party analytic reports. Significant judgment by management is required in this analysis that includes, but is not limited to, assumptions regarding the collectability of principal and interest, net of related expenses, on the underlying loans. The following table presents a summary of the significant inputs utilized to measure management’s estimates of the credit loss component on OTTI securities as of December 31, 2018 and 2017: Range Weighted Minimum Maximum Average December 31, 2018 Constant prepayment rate 6.00 % 15.00 % 13.56 % Collateral default rate — % 11.94 % 5.72 % Loss severity rate — % 77.00 % 46.97 % December 31, 2017 Constant prepayment rate 6.00 % 15.00 % 9.91 % Collateral default rate — % 11.08 % 4.77 % Loss severity rate — % 62.00 % 37.32 % The following table presents the OTTI recoveries (losses) for the three months ended December 31, 2018 and 2017 (dollars in thousands): Three Months Ended Three Months Ended Held To Maturity Available For Sale Held To Maturity Available For Sale Total recoveries $ 11 $ — $ 27 $ — Adjustment for portion of OTTI transferred from other comprehensive income (loss) before income taxes (1) — — (5 ) — Net recoveries recognized in earnings (2) $ 11 $ — $ 22 $ — _________________ (1) Represents OTTI related to all other factors. (2) Represents OTTI related to credit losses. The following table presents a roll forward of the credit loss component of held to maturity and available for sale debt securities that have been written down for OTTI with the credit loss component recognized in earnings for the three months ended December 31, 2018 and 2017 (dollars in thousands): Three Months Ended December 31, 2018 2017 Beginning balance of credit loss $ 1,153 $ 1,301 Additions: Additional increases to the amount related to credit loss for which OTTI was previously recognized 1 6 Subtractions: Realized losses previously recorded as credit losses (20 ) (22 ) Recovery of prior credit loss (12 ) (26 ) Ending balance of credit loss $ 1,122 $ 1,259 During the three months ended December 31, 2018 , the Company recorded a $20,000 net realized loss (as a result of investment securities being deemed worthless) on 15 held to maturity investment securities, all of which had been recognized previously as a credit loss. During the three months ended December 31, 2017 , the Company recorded a $22,000 net realized loss (as a result of investment securities being deemed worthless) on 12 held to maturity investment securities, all of which had been recognized previously as a credit loss. The recorded amount of investment securities pledged as collateral for public fund deposits, federal treasury tax and loan deposits, FHLB collateral and other non-profit organization deposits totaled $14.94 million and $12.10 million at December 31, 2018 and September 30, 2018 , respectively. The contractual maturities of debt securities at December 31, 2018 were as follows (dollars in thousands). Expected maturities may differ from scheduled maturities due to the prepayment of principal or call provisions. Held to Maturity Available for Sale Amortized Cost Estimated Fair Value Amortized Cost Estimated Fair Value Due within one year $ 7,978 $ 7,960 $ — $ — Due after one year to five years 7,192 7,142 — — Due after five years to ten years 969 974 447 434 Due after ten years 15,811 16,396 1,852 1,763 Total $ 31,950 $ 32,472 $ 2,299 $ 2,197

Goodwill and CDI

Goodwill and CDI	3 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and CDI	GOODWILL AND CDI Goodwill is initially recorded when the purchase price paid in a business combination exceeds the estimated fair value of the net identified tangible and intangible assets acquired and liabilities assumed. Goodwill is presumed to have an indefinite useful life and is analyzed annually for impairment. The Company performs an annual review during the third quarter of each fiscal year, or more frequently if indicators of potential impairment exist, to determine if the recorded goodwill is impaired. For purposes of goodwill impairment testing, the services offered through the Bank and its subsidiary are managed as one strategic unit and represent the Company's only reporting unit. The annual goodwill impairment test begins with a qualitative assessment of whether it is "more likely than not" that the reporting unit's fair value is less than its carrying amount. If an entity concludes that it is not "more likely than not" that the fair value of a reporting unit is less than its carrying amount, it need not perform a two-step impairment test. If the Company's qualitative assessment concluded that it is "more likely than not" that the fair value of its reporting unit is less than its carrying amount, it must perform the two-step impairment test to identify potential goodwill impairment and measure the amount of goodwill impairment loss to be recognized, if any. The first step of the goodwill impairment test compares the estimated fair value of the reporting unit with its carrying amount, or the book value, including goodwill. If the estimated fair value of the reporting unit equals or exceeds its book value, goodwill is considered not impaired, and the second step of the impairment test is unnecessary. The second step, if necessary, measures the amount of goodwill impairment loss to be recognized. The reporting unit must determine fair value for all assets and liabilities, excluding goodwill. The net of the assigned fair value of assets and liabilities is then compared to the book value of the reporting unit, and any excess book value becomes the implied fair value of goodwill. If the carrying amount of the goodwill exceeds the newly calculated implied fair value of goodwill, an impairment loss is recognized in the amount required to write-down the goodwill to the implied fair value. Management's qualitative assessment takes into consideration macroeconomic conditions, industry and market considerations, cost or margin factors, financial performance and share price of the Company's common stock. Based on this assessment, the Company determined that it is not "more likely than not" that the Company's fair value is less than its carrying amount and therefore goodwill was determined not to be impaired at May 31, 2018. A significant amount of judgment is involved in determining if an indicator of goodwill impairment has occurred. Such indicators may include, among others: a significant decline in expected future cash flows; a sustained, significant decline in the Company's stock price and market capitalization; a significant adverse change in legal factors or in the business climate; adverse assessment or action by a regulator; and unanticipated competition. Any change in these indicators could have a significant negative impact on the Company's financial condition, impact the goodwill impairment analysis or cause the Company to perform a goodwill impairment analysis more frequently than once per year. As of December 31, 2018, management believes that there have been no events or changes in the circumstances since May 31, 2018 that would indicate a potential impairment of goodwill. No assurances can be given, however, that the Company will not record an impairment loss on goodwill in the future. The following table presents the change in the carrying amount of goodwill for the period indicated (dollars in thousands). Three Months Ended December 31, 2018 Balance at the beginning of the period $ 5,650 Addition as a result of the South Sound Merger (see Note 2) 8,970 Balance at the end of the period $ 14,620 The following table presents the change in CDI for the period indicated (dollars in thousands). Three Months Ended December 31, 2018 Balance at the beginning of the period $ — Addition as a result of the South Sound Merger (see Note 2) 2,483 Amortization (109 ) Balance at the end of the period $ 2,374

Loans Receivable And Allowance

Loans Receivable And Allowance For Loan Losses	3 Months Ended
	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Loans Receivable And Allowance For Loan Losses	LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES Loans receivable by portfolio segment consisted of the following at December 31, 2018 and September 30, 2018 (dollars in thousands): December 31, September 30, Amount Percent Amount Percent Mortgage loans: One- to four-family (1) $ 130,219 13.4 % $ 115,941 14.1 % Multi-family 72,076 7.4 61,928 7.5 Commercial 426,144 43.9 345,113 42.0 Construction - custom and owner/builder 119,214 12.3 119,555 14.6 Construction - speculative one- to four-family 17,934 1.9 15,433 1.9 Construction - commercial 42,416 4.4 39,590 4.8 Construction - multi-family 25,645 2.6 10,740 1.3 Construction - land development 10,578 1.1 3,040 0.4 Land 22,734 2.3 25,546 3.1 Total mortgage loans 866,960 89.3 736,886 89.8 Consumer loans: Home equity and second mortgage 40,468 4.2 37,341 4.5 Other 4,443 0.5 3,515 0.5 Total consumer loans 44,911 4.7 40,856 5.0 Commercial business loans 58,202 6.0 43,053 5.2 Total loans receivable 970,073 100.0 % 820,795 100.0 % Less: Undisbursed portion of construction loans in process 100,595 83,237 Deferred loan origination fees, net 2,875 2,637 Allowance for loan losses 9,533 9,530 113,003 95,404 Loans receivable, net $ 857,070 $ 725,391 _____________________________ (1) Does not include one- to four-family loans held for sale totaling $2,988 and $1,785 at December 31, 2018 and September 30, 2018, respectively. Allowance for Loan Losses The following tables set forth information for the three months ended December 31, 2018 and 2017 regarding activity in the allowance for loan losses by portfolio segment (dollars in thousands): Three Months Ended December 31, 2018 Beginning Allowance Provision for (Recapture of) Loan Losses Charge- offs Recoveries Ending Allowance Mortgage loans: One- to four-family $ 1,086 $ 73 $ — $ — $ 1,159 Multi-family 433 16 — — 449 Commercial 4,248 (9 ) — — 4,239 Construction – custom and owner/builder 671 (28 ) — — 643 Construction – speculative one- to four-family 178 28 — — 206 Construction – commercial 563 (177 ) — — 386 Construction – multi-family 135 74 — — 209 Construction – land development 49 94 — — 143 Land 844 (91 ) — 4 757 Consumer loans: Home equity and second mortgage 649 17 — — 666 Other 117 (15 ) (2 ) 1 101 Commercial business loans 557 18 — — 575 Total $ 9,530 $ — $ (2 ) $ 5 $ 9,533 Three Months Ended December 31, 2017 Beginning Allowance Provision for (Recapture of) Loan Losses Charge- offs Recoveries Ending Allowance Mortgage loans: One- to four-family $ 1,082 $ 43 $ — $ — $ 1,125 Multi-family 447 (17 ) — — 430 Commercial 4,184 (91 ) — — 4,093 Construction – custom and owner/builder 699 89 — — 788 Construction – speculative one- to four-family 128 (61 ) — 8 75 Construction – commercial 303 93 — — 396 Construction – multi-family 173 55 — — 228 Land 918 (142 ) — 4 780 Consumer loans: Home equity and second mortgage 983 (25 ) — — 958 Other 121 8 (1 ) 1 129 Commercial business loans 515 48 — — 563 Total $ 9,553 $ — $ (1 ) $ 13 $ 9,565 The following tables present information on the loans evaluated individually and collectively for impairment in the allowance for loan losses by portfolio segment at December 31, 2018 and September 30, 2018 (dollars in thousands): Allowance for Loan Losses Recorded Investment in Loans Individually Evaluated for Impairment Collectively Evaluated for Impairment Total Individually Evaluated for Impairment Collectively Evaluated for Impairment Total December 31, 2018 Mortgage loans: One- to four-family $ — $ 1,159 $ 1,159 $ 1,014 $ 129,205 $ 130,219 Multi-family — 449 449 — 72,076 72,076 Commercial — 4,239 4,239 2,436 423,708 426,144 Construction – custom and owner/builder — 643 643 — 64,313 64,313 Construction – speculative one- to four-family — 206 206 — 9,221 9,221 Construction – commercial — 386 386 — 25,883 25,883 Construction – multi-family — 209 209 — 9,333 9,333 Construction – land development — 143 143 — 6,442 6,442 Land 79 678 757 396 22,338 22,734 Consumer loans: Home equity and second mortgage — 666 666 386 40,082 40,468 Other — 101 101 — 4,443 4,443 Commercial business loans 58 517 575 299 57,903 58,202 Total $ 137 $ 9,396 $ 9,533 $ 4,531 $ 864,947 $ 869,478 September 30, 2018 Mortgage loans: One- to four-family $ — $ 1,086 $ 1,086 $ 1,054 $ 114,887 $ 115,941 Multi-family — 433 433 — 61,928 61,928 Commercial — 4,248 4,248 2,446 342,667 345,113 Construction – custom and owner/builder — 671 671 — 67,024 67,024 Construction – speculative one- to four-family — 178 178 — 7,107 7,107 Construction – commercial — 563 563 — 23,440 23,440 Construction – multi-family — 135 135 — 5,983 5,983 Construction – land development — 49 49 — 1,567 1,567 Land 34 810 844 243 25,303 25,546 Consumer loans: Home equity and second mortgage — 649 649 359 36,982 37,341 Other — 117 117 — 3,515 3,515 Commercial business loans 63 494 557 170 42,883 43,053 Total $ 97 $ 9,433 $ 9,530 $ 4,272 $ 733,286 $ 737,558 The following tables present an analysis of loans by aging category and portfolio segment at December 31, 2018 and September 30, 2018 (dollars in thousands): 30–59 Days Past Due 60-89 Days Past Due Non- Accrual (1) Past Due 90 Days or More and Still Accruing Total Past Due Current Total Loans December 31, 2018 Mortgage loans: One- to four-family $ — $ — $ 509 $ — $ 509 $ 129,710 $ 130,219 Multi-family — — — — — 72,076 72,076 Commercial 317 776 — — 1,093 425,051 426,144 Construction – custom and owner/builder — — — — — 64,313 64,313 Construction – speculative one- to four- family — — — — — 9,221 9,221 Construction – commercial — — — — — 25,883 25,883 Construction – multi-family — — — — — 9,333 9,333 Construction – land development 228 — — — 228 6,214 6,442 Land — 108 396 — 504 22,230 22,734 Consumer loans: Home equity and second mortgage — 37 386 — 423 40,045 40,468 Other 10 16 — — 26 4,417 4,443 Commercial business loans 174 — 299 — 473 57,729 58,202 Total $ 729 $ 937 $ 1,590 $ — $ 3,256 $ 866,222 $ 869,478 September 30, 2018 Mortgage loans: One- to four-family $ 557 $ — $ 545 $ — $ 1,102 $ 114,839 $ 115,941 Multi-family — — — — — 61,928 61,928 Commercial 574 — — — 574 344,539 345,113 Construction – custom and owner/ — — — — — 67,024 67,024 Construction – speculative one- to four- family — — — — — 7,107 7,107 Construction – commercial — — — — — 23,440 23,440 Construction – multi-family — — — — — 5,983 5,983 Construction – land development — — — — — 1,567 1,567 Land 40 — 243 — 283 25,263 25,546 Consumer loans: Home equity and second mortgage 42 — 359 — 401 36,940 37,341 Other 10 16 — — 26 3,489 3,515 Commercial business loans — — 170 — 170 42,883 43,053 Total $ 1,223 $ 16 $ 1,317 $ — $ 2,556 $ 735,002 $ 737,558 ______________________ (1) Includes non-accrual loans past due 90 days or more and other loans classified as non-accrual. Credit Quality Indicators The Company uses credit risk grades which reflect the Company’s assessment of a loan’s risk or loss potential. The Company categorizes loans into risk grade categories based on relevant information about the ability of borrowers to service their debt such as: current financial information, historical payment experience, credit documentation, public information and current economic trends, among other factors such as the estimated fair value of the collateral. The Company uses the following definitions for credit risk ratings as part of the on-going monitoring of the credit quality of its loan portfolio: Pass: Pass loans are defined as those loans that meet acceptable quality underwriting standards. Watch: Watch loans are defined as those loans that still exhibit acceptable quality, but have some concerns that justify greater attention. If these concerns are not corrected, a potential for further adverse categorization exists. These concerns could relate to a specific condition peculiar to the borrower, its industry segment or the general economic environment. Special Mention: Special mention loans are defined as those loans deemed by management to have some potential weaknesses that deserve management’s close attention. If left uncorrected, these potential weaknesses may result in the deterioration of the payment prospects of the loan. Substandard: Substandard loans are defined as those loans that are inadequately protected by the current net worth and paying capacity of the obligor, or of the collateral pledged. Loans classified as substandard have a well-defined weakness or weaknesses that jeopardize the repayment of the debt. If the weakness or weaknesses are not corrected, there is the distinct possibility that some loss will be sustained. Loss: Loans in this classification are considered uncollectible and of such little value that continuance as bankable assets is not warranted. This classification does not mean that the loan has absolutely no recovery or salvage value, but rather it is not practical or desirable to defer writing off this loan even though partial recovery may be realized in the future. At December 31, 2018 and September 30, 2018 , there were no loans classified as loss. The following tables present an analysis of loans by credit quality indicator and portfolio segment at December 31, 2018 and September 30, 2018 (dollars in thousands): Loan Grades December 31, 2018 Pass Watch Special Substandard Total Mortgage loans: One- to four-family $ 127,116 $ 707 $ 574 $ 1,822 $ 130,219 Multi-family 72,076 — — — 72,076 Commercial 416,329 8,332 649 834 426,144 Construction – custom and owner/builder 64,094 219 — — 64,313 Construction – speculative one- to four-family 9,221 — — — 9,221 Construction – commercial 25,883 — — — 25,883 Construction – multi-family 9,333 — — — 9,333 Construction – land development 6,442 — — — 6,442 Land 20,116 979 1,243 396 22,734 Consumer loans: Home equity and second mortgage 39,802 82 — 584 40,468 Other 4,409 34 — — 4,443 Commercial business loans 57,735 119 49 299 58,202 Total $ 852,556 $ 10,472 $ 2,515 $ 3,935 $ 869,478 September 30, 2018 Mortgage loans: One- to four-family $ 113,148 $ 882 $ 581 $ 1,330 $ 115,941 Multi-family 61,928 — — — 61,928 Commercial 334,908 8,375 988 842 345,113 Construction – custom and owner/builder 66,720 304 — — 67,024 Construction – speculative one- to four-family 7,107 — — — 7,107 Construction – commercial 23,440 — — — 23,440 Construction – multi-family 5,983 — — — 5,983 Construction – land development 1,567 — — — 1,567 Land 22,810 988 1,505 243 25,546 Consumer loans: Home equity and second mortgage 36,697 82 — 562 37,341 Other 3,480 — — 35 3,515 Commercial business loans 42,812 22 49 170 43,053 Total $ 720,600 $ 10,653 $ 3,123 $ 3,182 $ 737,558 Impaired Loans A loan is considered impaired when it is probable that the Company will be unable to collect all amounts (principal and interest) when due according to the contractual terms of the loan agreement. Smaller balance homogeneous loans, such as residential mortgage loans and consumer loans, may be collectively evaluated for impairment. When a loan has been identified as being impaired, the amount of the impairment is measured by using discounted cash flows, except when, as an alternative, the current estimated fair value of the collateral (reduced by estimated costs to sell, if applicable) or observable market price is used. The valuation of real estate collateral is subjective in nature and may be adjusted in future periods because of changes in economic conditions. Management considers third-party appraisals, as well as independent fair market value assessments from realtors or persons involved in selling real estate, in determining the estimated fair value of particular properties. In addition, as certain of these third-party appraisals and independent fair market value assessments are only updated periodically, changes in the values of specific properties may have occurred subsequent to the most recent appraisals. Accordingly, the amounts of any such potential changes and any related adjustments are generally recorded at the time such information is received. When the estimated net realizable value of the impaired loan is less than the recorded investment in the loan (including accrued interest and net deferred loan origination fees or costs), impairment is recognized by creating or adjusting an allocation of the allowance for loan losses and uncollected accrued interest is reversed against interest income. If ultimate collection of principal is in doubt, all cash receipts on impaired loans are applied to reduce the principal balance. The categories of non-accrual loans and impaired loans overlap, although they are not identical. The following table is a summary of information related to impaired loans by portfolio segment as of December 31, 2018 and for the three months then ended (dollars in thousands): Recorded Investment Unpaid Principal Balance (Loan Balance Plus Charge Off) Related Allowance Year to Date ("YTD") Average Recorded Investment (1) YTD Interest Income Recognized (1) YTD Cash Basis Interest Income Recognized (1) With no related allowance recorded: Mortgage loans: One- to four-family $ 1,014 $ 1,161 $ — $ 1,034 $ 18 $ 16 Commercial 2,436 2,436 — 2,441 40 31 Land — 78 — 45 — — Consumer loans: Home equity and second mortgage 386 386 — 373 — — Commercial business loans 114 114 — 57 — — Subtotal 3,950 4,175 — 3,950 58 47 With an allowance recorded: Mortgage loans: Land 396 396 79 198 — — Consumer loans: Home equity and second mortgage — — — 77 — — Commercial business loans 185 185 58 178 — — Subtotal 581 581 137 453 — — Total: Mortgage loans: One- to four-family 1,014 1,161 — 1,034 18 16 Commercial 2,436 2,436 — 2,441 40 31 Land 396 474 79 243 — — Consumer loans: Home equity and second mortgage 386 386 — 450 — — Commercial business loans 299 299 58 235 — — Total $ 4,531 $ 4,756 $ 137 $ 4,403 $ 58 $ 47 ______________________________________________ (1) For the three months ended December 31, 2018 . The following table is a summary of information related to impaired loans by portfolio segment as of and for the year ended September 30, 2018 (dollars in thousands): Recorded Investment Unpaid Principal Balance (Loan Balance Plus Charge Off) Related Allowance Average Recorded Investment (1) Interest Income Recognized (1) Cash Basis Interest Income Recognized (1) With no related allowance recorded: Mortgage loans: One- to four-family $ 1,054 $ 1,200 $ — $ 1,422 $ 80 $ 69 Commercial 2,446 2,446 — 2,389 121 93 Land 90 195 — 283 11 10 Consumer loans: Home equity and second mortgage 359 359 — 210 3 3 Subtotal 3,949 4,200 — 4,304 215 175 With an allowance recorded: Mortgage loans: One- to four-family — — — 9 — — Commercial — — — 760 28 21 Land 153 153 34 383 9 8 Consumer loans: Home equity and second mortgage — — — 310 16 13 Commercial business loans 170 170 63 141 — — Subtotal 323 323 97 1,603 53 42 Total: Mortgage loans: One- to four-family 1,054 1,200 — 1,431 80 69 Commercial 2,446 2,446 — 3,149 149 114 Land 243 348 34 666 20 18 Consumer loans: Home equity and second mortgage 359 359 — 520 19 16 Commercial business loans 170 170 63 141 — — Total $ 4,272 $ 4,523 $ 97 $ 5,907 $ 268 $ 217 ______________________________________________ (1) For the year ended September 30, 2018. A troubled debt restructured loan ("TDR") is a loan for which the Company, for reasons related to a borrower’s financial difficulties, grants a concession to the borrower that the Company would not otherwise consider. Examples of such concessions include, but are not limited to: a reduction in the stated interest rate; an extension of the maturity at an interest rate below current market rates; a reduction in the face amount of the debt; a reduction in the accrued interest; or re-amortizations, extensions, deferrals and renewals. TDRs are considered impaired and are individually evaluated for impairment. TDRs are classified as non-accrual (and considered to be non-performing) unless they have been performing in accordance with modified terms for a period of at least six months. The Company had $3.25 million and $3.28 million in TDRs included in impaired loans at December 31, 2018 and September 30, 2018, respectively, and had no commitments at these dates to lend additional funds on these loans. The allowance for loan losses allocated to TDRs at December 31, 2018 and September 30, 2018 was $84,000 and $97,000 , respectively. There were no TDRs for which there was a payment default within the first 12 months of the modification during the three months ended December 31, 2018. The following tables set forth information with respect to the Company’s TDRs by interest accrual status as of December 31, 2018 and September 30, 2018 (dollars in thousands): December 31, 2018 Accruing Non- Accrual Total Mortgage loans: One- to four-family $ 505 $ 146 $ 651 Commercial 2,436 — 2,436 Commercial business loans — 162 162 Total $ 2,941 $ 308 $ 3,249 September 30, 2018 Accruing Non- Accrual Total Mortgage loans: One- to four-family $ 509 $ — $ 509 Commercial 2,446 — 2,446 Land — 153 153 Commercial business loans — 170 170 Total $ 2,955 $ 323 $ 3,278 There were no new TDRs during the three months ended December 31, 2018 . There were three new TDRs for the year ended September 30, 2018. The following table sets forth information with respect to the Company's TDRs, by portfolio segment, during the year ended September 30, 2018 (dollars in thousands): 2018 Number of Contracts Pre-Modification Outstanding Recorded Investment Post- Modification Outstanding Recorded Investment End of Period Balance Land loans (1) 1 $ 244 $ 155 $ 153 Commercial business loans (2) 2 183 183 170 Total 3 $ 427 $ 338 $ 323 (1) Modification was a result of a reduction in principal balance. (2) Modifications were a result of reduction in monthly payment amounts.

Net Income Per Common Share

Net Income Per Common Share	3 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
Net Income Per Common Share	Basic net income per common share is computed by dividing net income to common shareholders by the weighted average number of common shares outstanding during the period, without considering any dilutive items. Diluted net income per common share is computed by dividing net income to common shareholders by the weighted average number of common shares and common stock equivalents for items that are dilutive, net of shares assumed to be repurchased using the treasury stock method at the average share price for the Company’s common stock during the period. Common stock equivalents arise from the assumed conversion of outstanding stock options to purchase common stock. Shares owned by the Bank’s ESOP that have not been allocated are not considered to be outstanding for the purpose of computing basic and diluted net income per common share. At December 31, 2018 and 2017, there were 14,027 and 51,105 shares, respectively, that had not been allocated under the Bank’s ESOP. Information regarding the calculation of basic and diluted net income per common share for the three months ended December 31, 2018 and 2017 is as follows (dollars in thousands, except per share amounts): Three Months Ended December 31, 2018 2017 Basic net income per common share computation Numerator – net income $ 5,615 $ 3,614 Denominator – weighted average common shares outstanding 8,293,212 7,312,531 Basic net income per common share $ 0.68 $ 0.49 Diluted net income per common share computation Numerator – net income $ 5,615 $ 3,614 Denominator – weighted average common shares outstanding 8,293,212 7,312,531 Effect of dilutive stock options (1) 164,491 195,638 Weighted average common shares outstanding - assuming dilution 8,457,703 7,508,169 Diluted net income per common share $ 0.66 $ 0.48 ____________________________________________ (1) For the three months ended December 31, 2018, average options to purchase 102,850 shares of common were outstanding but not included in the computation of diluted net income per share because their effect would have been anti-dilutive. For the three months ended December 31, 2017, average options to purchase 14,651 shares of common stock were outstanding but not included in the computation of diluted net income per share because their effect would have been anti-dilutive.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	3 Months Ended
	Dec. 31, 2018
Equity [Abstract]
Accumulated Other Comprehensive Loss	ACCUMULATED OTHER COMPREHENSIVE LOSS The changes in accumulated other comprehensive loss ("AOCI") by component during the three months ended December 31, 2018 and 2017 are as follows (dollars in thousands): Three Months Ended December 31, 2018 Changes in fair value of available for sale securities (1) Changes in OTTI on held to maturity securities (1) Total (1) Balance of AOCI at the beginning of period $ (58 ) $ (71 ) $ (129 ) Other comprehensive loss (86 ) 7 (79 ) Adoption of ASU 2016-01 63 — 63 Balance of AOCI at the end of period $ (81 ) $ (64 ) $ (145 ) Three Months Ended December 31, 2017 Changes in fair value of available for sale securities (1) Changes in OTTI on held to maturity securities (1) Total (1) Balance of AOCI at the beginning of period $ (19 ) $ (105 ) $ (124 ) Other comprehensive loss (7 ) (5 ) (12 ) Balance of AOCI at the end of period $ (26 ) $ (110 ) $ (136 ) __________________________ (1) All amounts are net of income taxes.

Stock Compensation Plans

Stock Compensation Plans	3 Months Ended
	Dec. 31, 2018
Share-based Compensation [Abstract]
Stock Compensation Plans	STOCK COMPENSATION PLANS Under the Company’s 2003 Stock Option Plan, the Company was able to grant options for up to 300,000 shares of common stock to employees, officers, directors and directors emeriti. Under the Company's 2014 Equity Incentive Plan, the Company is able to grant options and awards of restricted stock (with or without performance measures) for up to 352,366 shares of common stock to employees, officers, directors and directors emeriti. Shares issued may be purchased in the open market or may be issued from authorized and unissued shares. The exercise price of each option equals the fair market value of the Company’s common stock on the date of grant. Generally, options and restricted stock vest in 20% annual installments on each of the five anniversaries from the date of the grant, and options generally have a maximum contractual term of ten years from the date of grant. At December 31, 2018 , there were 75,116 shares of common stock available which may be awarded as options or restricted stock pursuant to future grant under the 2014 Equity Incentive Plan. At both December 31, 2018 and 2017, there were no unvested restricted stock awards. There were no restricted stock grants awarded during the three months ended December 31, 2018 and 2017. Stock option activity for the three months ended December 31, 2018 and 2017 is summarized as follows: Three Months Ended Three Months Ended Number of Shares Weighted Average Exercise Price Number of Shares Weighted Average Exercise Price Options outstanding, beginning of period 380,820 $ 16.03 380,120 $ 13.23 Exercised (7,400 ) 9.55 (6,250 ) 9.65 Forfeited (3,700 ) 18.03 (4,300 ) 11.66 Options outstanding, end of period 369,720 $ 16.14 369,570 $ 13.31 The aggregate intrinsic value of options exercised during the three months ended December 31, 2018 and 2017 was $142,000 and $124,000 , respectively. At December 31, 2018 , there were 174,850 unvested options with an aggregate grant date fair value of $527,000 , all of which the Company assumes will vest. The aggregate intrinsic value of unvested options at December 31, 2018 was $823,000 . There were 18,200 options with an aggregate grant date fair value of $164,000 that vested during the three months ended December 31, 2018 . At December 31, 2017 , there were 203,250 unvested options with an aggregate grant date fair value of $499,000 . There were 29,500 options with an aggregate grant date fair value of $75,000 that vested during the three months ended December 31, 2017 . Additional information regarding options outstanding at December 31, 2018 is as follows: Options Outstanding Options Exercisable Range of Exercise Prices ($) Number Weighted Average Exercise Price Weighted Average Remaining Contractual Life (Years) Number Weighted Average Exercise Price Weighted Average Remaining Contractual Life (Years) $ 4.01 - 4.55 2,500 $ 4.33 1.7 2,500 $ 4.33 1.7 5.86 - 6.00 27,850 5.96 3.8 27,850 5.96 3.8 9.00 68,000 9.00 4.8 68,000 9.00 4.8 10.26 - 10.71 118,420 10.57 6.3 66,120 10.56 6.2 15.67 50,700 15.67 7.8 18,900 15.67 7.8 29.69 56,300 29.69 8.8 11,500 29.69 8.8 31.80 45,950 31.80 9.8 — N/A N/A 369,720 $ 16.14 6.8 194,870 $ 10.90 5.6 The aggregate intrinsic value of options outstanding at December 31, 2018 and 2017 was $3.13 million and $4.89 million , respectively. As of December 31, 2018, unrecognized compensation cost related to non-vested stock options was $477,000 , which is expected to be recognized over a weighted average life of 2.34 years.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	FAIR VALUE MEASUREMENTS Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. GAAP requires that valuation techniques maximize the use of observable inputs and minimize the use of unobservable inputs. GAAP also establishes a fair value hierarchy which prioritizes the valuation inputs into three broad levels. Based on the underlying inputs, each fair value measurement in its entirety is reported in one of three levels. These levels are: Level 1: Quoted prices (unadjusted) in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date. Level 2: Significant observable inputs other than quoted prices included within Level 1, such as quoted prices for similar (as opposed to identical) assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, and inputs other than quoted prices that are observable or can be corroborated by observable market data. Level 3: Significant unobservable inputs that reflect a company’s own assumptions about the assumptions market participants would use in pricing an asset or liability based on the best information available in the circumstances. The Company's assets measured at fair value on a recurring basis consist of investment securities available for sale and investments in equity securities. The estimated fair values of MBS are based upon market prices of similar securities or observable inputs (Level 2). The estimated fair values of mutual funds are based upon quoted market prices (Level 1). The Company had no liabilities measured at fair value on a recurring basis at December 31, 2018 and September 30, 2018. The Company's assets measured at estimated fair value on a recurring basis at December 31, 2018 and September 30, 2018 were as follows (dollars in thousands): December 31, 2018 Estimated Fair Value Level 1 Level 2 Level 3 Total Available for sale investment securities MBS: U.S. government agencies $ — $ 2,197 $ — $ 2,197 Investments in equity securities Mutual funds 925 — — 925 Total $ 925 $ 2,197 $ — $ 3,122 September 30, 2018 Estimated Fair Value Level 1 Level 2 Level 3 Total Available for sale investment securities MBS: U.S. government agencies $ — $ 237 $ — $ 237 Investments in equity securities Mutual funds 917 — — 917 Total $ 917 $ 237 $ — $ 1,154 There were no transfers among Level 1, Level 2 and Level 3 during the three months ended December 31, 2018 and the year ended September 30, 2018 . The Company may be required, from time to time, to measure certain assets and liabilities at fair value on a non-recurring basis in accordance with GAAP. These include assets that are measured at the lower of cost or market value that were recognized at fair value below cost at the end of the period. The Company uses the following methods and significant assumptions to estimate fair value on a non-recurring basis: Impaired Loans : The estimated fair value of impaired loans is calculated using the collateral value method or on a discounted cash flow basis. The specific reserve for collateral dependent impaired loans is based on the estimated fair value of the collateral less estimated costs to sell, if applicable. In some cases, adjustments are 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. Such adjustments may be significant and typically result in a Level 3 classification of the inputs for determining fair value. Impaired loans are evaluated on a quarterly basis for additional impairment and adjusted accordingly. Investment Securities Held to Maturity: The estimated fair value of investment securities held to maturity is based upon the assumptions market participants would use in pricing the investment security. Such assumptions include quoted market prices (Level 1), market prices of similar securities or observable inputs (Level 2) and unobservable inputs such as dealer quotes, discounted cash flows or similar techniques (Level 3). OREO and Other Repossessed Assets, net: OREO and other repossessed assets are recorded at estimated fair value less estimated costs to sell. Estimated fair value is generally determined by management based on a number of factors, including third-party appraisals of estimated fair value in an orderly sale. Estimated costs to sell are based on standard market factors. The valuation of OREO and other repossessed assets is subject to significant external and internal judgment (Level 3). The following table summarizes the balances of assets measured at estimated fair value on a non-recurring basis at December 31, 2018 (dollars in thousands): Estimated Fair Value Level 1 Level 2 Level 3 Impaired loans: Mortgage loans: Land $ — $ — $ 317 Commercial business loans — — 127 Total impaired loans — — 444 Investment securities – held to maturity: MBS - private label residential — 7 — OREO and other repossessed assets — — 2,026 Total $ — $ 7 $ 2,470 The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a non-recurring basis as of December 31, 2018 (dollars in thousands): Estimated Fair Value Valuation Technique(s) Unobservable Input(s) Range Impaired loans $ 444 Market approach Appraised value less selling costs NA OREO and other repossessed assets $ 2,026 Market approach Lower of appraised value or listing price less selling costs NA The following table summarizes the balances of assets measured at estimated fair value on a non-recurring basis at September 30, 2018 (dollars in thousands): Estimated Fair Value Level 1 Level 2 Level 3 Impaired loans: Mortgage loans: Land $ — $ — $ 119 Commercial business loans — — 107 Total impaired loans — — 226 Investment securities – held to maturity: MBS - private label residential — 3 — OREO and other repossessed assets — — 1,913 Total $ — $ 3 $ 2,139 The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a non-recurring basis as of September 30, 2018 (dollars in thousands): Estimated Fair Value Valuation Technique(s) Unobservable Input(s) Range Impaired loans $ 226 Market approach Appraised value less selling costs NA OREO and other repossessed assets $ 1,913 Market approach Lower of appraised value or listing price less selling costs NA GAAP requires disclosure of estimated fair values for certain financial instruments. Such estimates are subjective in nature, and significant judgment is required regarding the risk characteristics of various financial instruments at a discrete point in time. Therefore, such estimates could vary significantly if assumptions regarding uncertain factors were to change. In addition, as the Company normally intends to hold the majority of its financial instruments until maturity, it does not expect to realize many of the estimated amounts disclosed. The disclosures also do not include estimated fair value amounts for certain items which are not defined as financial instruments but for which may have significant value. The Company does not believe that it would be practicable to estimate a represented fair value for these types of items as of December 31, 2018 and September 30, 2018. Because GAAP excludes certain items from fair value disclosure requirements, any aggregation of the fair value amounts presented would not represent the underlying value of the Company. Additionally, in accordance with ASU No. 2016-01, which the Company adopted on October 1, 2018 on a prospective basis, the Company uses the exit price notion in calculating the fair values of financial instruments not measured at fair value on a recurring basis. The recorded amounts and estimated fair values of financial instruments were as follows as of December 31, 2018 and September 30, 2018 (dollars in thousands): December 31, 2018 Fair Value Measurements Using: Recorded Amount Estimated Fair Value Level 1 Level 2 Level 3 Financial assets Cash and cash equivalents $ 161,743 $ 161,743 $ 161,743 $ — $ — CDs held for investment 65,830 65,830 65,830 — — Investment securities 35,072 35,594 8,844 26,750 — FHLB stock 1,395 1,395 1,395 — — Other investments 3,000 3,000 3,000 — — Loans held for sale 2,988 3,044 3,044 — — Loans receivable, net 857,070 843,968 — — 843,968 Accrued interest receivable 3,497 3,497 3,497 — — Financial liabilities Time deposits 154,773 153,836 — — 153,836 Accrued interest payable 295 295 295 — — September 30, 2018 Fair Value Measurements Using: Recorded Amount Estimated Fair Value Level 1 Level 2 Level 3 Financial assets Cash and cash equivalents $ 148,864 $ 148,864 $ 148,864 $ — $ — CDs held for investment 63,290 63,290 63,290 — — Investment securities 13,964 14,418 8,812 5,606 — FHLB stock 1,190 1,190 1,190 — — Other investments 3,000 3,000 3,000 — — Loans held for sale 1,785 1,814 1,814 — — Loans receivable, net 725,391 711,071 — — 711,071 Accrued interest receivable 2,877 2,877 2,877 — — Financial liabilities Time deposits 141,808 140,831 — — 140,831 Accrued interest payable 225 225 225 — —

Recent Accounting Pronouncement

Recent Accounting Pronouncements	3 Months Ended
	Dec. 31, 2018
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recent Accounting Pronouncements	RECENT ACCOUNTING PRONOUNCEMENTS In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers, which created FASB Accounting Standards Codification ("ASC") Topic 606 ("ASC 606"). The core principle of ASC 606 is that an entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve that core principle, an entity should apply the following steps: (1) identify the contract(s) with a customer, (2) identify the performance obligations in the contract, (3) determine the transaction price, (4) allocate the transaction price to the performance obligations in the contract and (5) recognize revenue when (or as) the entity satisfies a performance obligation. ASC 606 was effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The Company adopted ASC 606 on October 1, 2018 using the modified retrospective approach. Therefore, the comparative information has not been adjusted and continues to be reported under superseded ASC 605. There was no cumulative effect adjustment as of October 1, 2018, and there were no material changes to the timing or amount of revenue recognized for the three months ended December 31, 2018; however, additional disclosures were incorporated in the footnotes upon adoption. The majority of the Company's revenue is comprised of interest income from financial assets, which is explicitly excluded from the scope of ASC 606. The Company elected to apply the practical expedient pursuant to ACS 606 and therefore does not disclose information about remaining performance obligations that have an original expected term of one year or less and allows the Company to expense costs related to obtaining a contract as incurred when the amortization period would have been one year or less. See Note 12 for additional information. In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities . ASU No. 2016-01 generally requires equity investments - except those accounted for under the valuation method of accounting or those that result in consolidation of the investee - to be measured at fair value with changes in fair value recognized in net income. However, an entity may choose to measure equity investments that do not have readily determinable fair values at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer. ASU No. 2016-01 is intended to simplify the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment. ASU No. 2016-01 also eliminates certain disclosures related to the fair value of financial instruments and requires entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes. ASU No 2016-01 was effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The Company adopted ASU No. 2016-01 on October 1, 2018. As required by ASU No. 2016-01, on October 1, 2018 the Company recorded a one-time cumulative effect adjustment of $63 representing net unrealized losses on equity securities between accumulated other comprehensive loss and retained earnings on the accompanying consolidated balance sheet. Additionally, the fair values of financial instruments for disclosure purposes were computed using an exit price notion and deposits with no stated maturity are no longer included in the fair value disclosures in Note 9. In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) . This ASU is intended to increase transparency and comparability among organizations by requiring the recognition of lease assets and lease liabilities on the balance sheet and disclosure of key information about leasing arrangements. The principal change required by this ASU relates to lessee accounting, and is that for operating leases, a lessee is required to (1) recognize a right-of-use asset and a lease liability, initially measured at the present value of the lease payments, in the statement of financial position, (2) recognize a single lease cost, calculated so that the cost of the lease is allocated over the lease term on a generally straight-line basis, and (3) classify all cash payments within operating activities in the statement of cash flows. For leases with a term of 12 months or less, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize lease assets and lease liabilities. If a lessee makes this election, it should recognize lease expense for such leases generally on a straight-line basis over the lease term. This ASU also changes disclosure requirements related to leasing activities and requires certain qualitative disclosures along with specific quantitative disclosures. In July 2018, the FASB issued ASU No. 2018-11, Leases (Topic 842), Targeted Improvements . This ASU amended the new lease standard to give entities another option for transition and to provide lessors with a practical expedient. The transition option allows entities to not apply the new leases standard in comparative periods they present in their financial statements in the year of adoption. The practical expedient provides lessors with an option to not separate non-lease components from the associated lease components when certain criteria are met and requires them to account for the combined component in accordance with the ASC 606 if the associated non-lease components are the predominant components. The amendments have the same effective date as ASU No. 2016-02. The amendments in ASU No. 2016-02 are effective for fiscal years, including interim periods within those fiscal years, beginning after December 15, 2018. Early application of the amendments in this ASU is permitted. The effect of adoption of this ASU will depend on the nature and terms of the Company's leases at the time of adoption. Once adopted, the Company expects to report higher assets and liabilities as a result of including right-of-use assets and lease liabilities related to certain banking offices and certain equipment under non-cancelable operating lease agreements; however, based on current leases the adoption of ASU No. 2016-02 is not expected to have a material impact on the Company's future consolidated financial statements. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses . This ASU replaces the existing incurred losses methodology with a current expected losses methodology with respect to most financial assets measured at amortized cost and certain other instruments, including trade and other receivables, loans, held to maturity investment securities and off-balance sheet commitments. In addition, this ASU requires credit losses relating to available for sale debt securities to be recorded through an allowance for credit losses rather than as a reduction of the carrying amount. ASU No. 2016-13 also changes the accounting for purchased credit-impaired debt securities and loans. ASU No. 2016-13 retains many of the current disclosure requirements in GAAP and expands disclosure requirements. ASU No. 2016-13 is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Upon adoption, the Company expects a change in the processes and procedures to calculate the allowance for loan losses, including changes in the assumptions and estimates to consider expected credit losses over the life of the loan versus the current accounting practice that utilizes the incurred loss model. In addition, the current policy for other-than-temporary impairment on investment securities available for sale will be replaced with an allowance approach. The Company is reviewing the requirements of ASU No. 2016-13 and has begun developing and implementing processes and procedures to ensure it is fully compliant with the amendments at the adoption date. At this time, the Company anticipates the allowance for loan losses will increase as a result of the implementation of this ASU; however, until its evaluation is complete, the magnitude of the increase will be unknown. In January 2017, the FASB issued ASU No. 2017-04, Intangibles - Goodwill and Other: Simplifying the Test for Goodwill Impairment. This ASU simplifies the subsequent measurement of goodwill and eliminates Step 2 from the goodwill impairment test. In computing the implied fair value of goodwill under Step 2, an entity had to perform procedures to determine the fair value of its assets and liabilities (including unrecognized assets and liabilities) at the impairment testing date following the procedure that would be required in determining the fair value of assets acquired and liabilities assumed in a business combination. Under ASU No. 2017-04, an entity should perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An entity should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit's fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. Additionally, an entity should consider income tax effects from any tax deductible goodwill on the carrying amount of the reporting unit when measuring the goodwill impairment loss, if applicable. ASU No. 2017-04 will be effective for annual or interim goodwill impairment tests in fiscal years beginning after December 15, 2019. Early application of this ASU is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The adoption of ASU No. 2017-04 is not expected to have a material impact on the Company's future consolidated financial statements. In March 2017, the FASB issued ASU No. 2017-08, Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities. This ASU shortens the amortization period for certain callable debt securities held at a premium to the earliest call date. This ASU is effective for fiscal years, including interim periods within those fiscal years, beginning after December 15, 2018. The adoption of ASU No. 2017-08 is not expected to have a material impact on the Company's future consolidated financial statements. In May 2017, the FASB issued ASU No. 2017-09, Compensation--Stock Compensation (Topic 718): Scope of Modification Accounting. This ASU was issued to provide clarity as to when to apply modification accounting when there is a change in the terms or conditions of a share-based payment award. According to the ASU, an entity should account for the effects of a modification unless the fair value, vesting conditions, and balance sheet classification of the award are the same after the modification as compared to the original award prior to modification. ASU No. 2017-09 was effective for fiscal years, including interim periods within those fiscal years, beginning after December 15, 2017, with early adoption permitted. The Company adopted this ASU on October 1, 2018. The adoption of ASU No. 2017-09 did not have a material impact on the Company's consolidated financial statements. In June 2018, the FASB issued ASU No. 2018-07, Compensation - Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting . This ASU was issued to expand the scope of Topic 718 to include share-based payment transactions for acquiring goods and services from nonemployees. Previously, these awards were recorded at the fair value of consideration received or the fair value of the equity instruments issued and was measured at the earlier of the commitment date or the date performance was completed. The amendments in this ASU require nonemployee share-based payment awards to be measured at the grant-date fair value of the equity instrument. ASU No. 2018-07 is effective for fiscal years, including interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted, but no earlier than an entity's adoption of Topic 606. The adoption of ASU No. 2018-07 is not expected to have a material impact on the Company's future consolidated financial statements. In August 2018, the FASB issued ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement . This ASU modifies the disclosure requirements for fair value measurements. The following disclosure requirements were removed from ASC Topic 820, Fair Value Measurement : (1) the amount of and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy; (2) the policy for timing of transfers between levels; and (3) the valuation process for Level 3 fair value measurements. This ASU clarifies that the measurement uncertainty disclosure is to communicate information about the uncertainty in measurement as of the reporting date. This ASU adds the following disclosure requirements for Level 3 measurements: (1) changes in unrealized gains and losses for the period included in other comprehensive income for the recurring Level 3 fair value measurements held at the end of the reporting period, and (2) the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements. ASU No. 2018-13 is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted for any removed or modified disclosures. The adoption of ASU No. 2018-13 is not expected to have a material impact on the Company's future consolidated financial statements. In August 2018, the FASB issued ASU No. 2018-15, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40), Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. The amendments in this ASU broaden the scope of ASC Subtopic 350-40 to include costs incurred to implement a hosting arrangement that is a service contract. The amendments align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). The costs are capitalized or expensed depending on the nature of the costs and the project stage during which they are incurred, consistent with the accounting for internal-use software costs. The amendments in this ASU result in consistent capitalization of implementation costs of a hosting arrangement that is a service contract and implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). The accounting for the service element of a hosting arrangement that is a service contract is not affected by the amendments in this ASU. ASU No. 2018-15 is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. The adoption of ASU No. 2018-15 is not expected to have a material impact on the Company's future consolidated financial statements.

U.S. Tax Reform U.S. Tax Reform

U.S. Tax Reform U.S. Tax Reform	3 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
U.S. Tax Reform	U.S. TAX REFORM On December 22, 2017, the U.S. government enacted the Tax Cuts and Jobs Act (the "Tax Act"). The Tax Act significantly revised the future ongoing U.S. corporate income tax by, among other things, decreasing the federal corporate income tax rate to 21.0% from 35.0% effective January 1, 2018. As the Company has a September 30 fiscal year-end, the lower corporate federal income tax rate was phased in, resulting in a blended federal income tax rate of approximately 24.5% for the Company's fiscal year ended September 30, 2018, and 21.0% for subsequent fiscal years. In addition, the reduction of the corporate federal income tax rate required the Company to revalue its deferred tax assets and liabilities based on the lower federal tax rate of 21.0%. As a result of the Tax Act, during the quarter ended December 31, 2017, the Company recorded a one-time income tax expense of $548,000 in conjunction with remeasuring its net deferred tax assets. The impact of using the 24.5% blended federal income tax rate for the quarter ended September 30, 2018 versus a 35.0% rate reduced the provision for income taxes by approximately $551,000 .

Revenue from Contracts with Cus

Revenue from Contracts with Customers Revenue from Contracts with Customers	3 Months Ended
	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Revenue from Contracts with Customers	REVENUE FROM CONTRACTS WITH CUSTOMERS ASC 606 applies to all contracts with customers to provide goods or services in the ordinary course of business, except for contracts that are specifically excluded from its scope. The majority of the Company's revenues are composed of interest income, deferred loan fee accretion, premium/discount accretion, gains on sales of loans and investments, BOLI net earnings, servicing income on loans sold and other loan fee income, which are not in the scope of ASC 606. Revenue reported as service charges on deposits, ATM and debit card interchange transaction fees, merchant services fees, non-deposit investment fees and escrow fees are within the scope of ASC 606. All of the Company's revenue from contracts with customers in the scope of ASC 606 is recognized in non-interest income with the exception of gains on sale of OREO and gains on sales/disposition of premises and equipment, which are included in non-interest expense. If a contract is determined to be within the scope of ASC 606, the Company recognizes revenue when it satisfies its performance obligation. Descriptions of our revenue-generating activities that are within the scope of ASC 606 are as follows: • Service Charges on Deposits: The Company earns fees from its deposit customers from a variety of deposit products and services. Non-transaction based fees such as account maintenance fees and monthly statement fees are considered to be provided to the customer under a day-to-day contract with ongoing renewals. Revenue for these non-transaction fees are earned over the course of a month, representing the period over which the Company satisfies the performance obligation. Transaction-based fees such as non-sufficient fund charges, stop payment charges and wire fees are recognized at the time the transaction is executed as the contract duration does not extend beyond the service performed. • ATM and Debit Card Interchange Transaction Fees: The Company earns fees from cardholder transactions conducted through third party payment network providers which consist of interchange fees earned from the payment networks as a debit card issuer. These fees are recognized when the transaction occurs, but may settle on a daily or monthly basis. • Escrow Fees: The Company earns fees from real estate escrow contracts with customers. The Company receives and disburses money and/or property per the customers contract. Fees are recognized when the escrow contract closes. • Fee Income from Non-deposit Investment Sales: The Company earns fees from contracts with customers for investment activities. Revenues are generally recognized on a monthly basis and are generally based on a percentage of the customer's assets under management or based on investment solutions that are implemented for the customer.

Summary Of Significant Accoun_2

Summary Of Significant Accounting Policies (Policies)	3 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation: The accompanying unaudited consolidated financial statements for the Company were prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and with instructions for Form 10-Q and, therefore, do not include all disclosures necessary for a complete presentation of consolidated financial condition, results of operations, and cash flows in conformity with GAAP. However, all adjustments which are, in the opinion of management, necessary for a fair presentation of the interim consolidated financial statements have been included. All such adjustments are of a normal recurring nature. The unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended September 30, 2018 (“2018 Form 10-K”). The unaudited consolidated results of operations for the three months ended December 31, 2018 are not necessarily indicative of the results that may be expected for the entire fiscal year ending September 30, 2019.
Principles of Consolidation	Principles of Consolidation: The unaudited consolidated financial statements include the accounts of the Company and its wholly-owned subsidiary, the Bank, and the Bank’s wholly-owned subsidiary, Timberland Service Corporation. All significant inter-company transactions and balances have been eliminated in consolidation.
Operating Segment	Operating Segment: The Company has one reportable operating segment which is defined as community banking in western Washington.
Use of Estimates	The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect reported amounts of assets and liabilities, and the disclosure of contingent assets and liabilities, as of the date of the consolidated balance sheets, and the reported amounts of income and expenses during the reporting period. Actual results could differ from those estimates.
Reclassification	Certain prior period amounts have been reclassified to conform to the December 31, 2018 presentation with no change to previously reported net income or total shareholders’ equity.
Recent Accounting Pronouncements	In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers, which created FASB Accounting Standards Codification ("ASC") Topic 606 ("ASC 606"). The core principle of ASC 606 is that an entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve that core principle, an entity should apply the following steps: (1) identify the contract(s) with a customer, (2) identify the performance obligations in the contract, (3) determine the transaction price, (4) allocate the transaction price to the performance obligations in the contract and (5) recognize revenue when (or as) the entity satisfies a performance obligation. ASC 606 was effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The Company adopted ASC 606 on October 1, 2018 using the modified retrospective approach. Therefore, the comparative information has not been adjusted and continues to be reported under superseded ASC 605. There was no cumulative effect adjustment as of October 1, 2018, and there were no material changes to the timing or amount of revenue recognized for the three months ended December 31, 2018; however, additional disclosures were incorporated in the footnotes upon adoption. The majority of the Company's revenue is comprised of interest income from financial assets, which is explicitly excluded from the scope of ASC 606. The Company elected to apply the practical expedient pursuant to ACS 606 and therefore does not disclose information about remaining performance obligations that have an original expected term of one year or less and allows the Company to expense costs related to obtaining a contract as incurred when the amortization period would have been one year or less. See Note 12 for additional information. In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities . ASU No. 2016-01 generally requires equity investments - except those accounted for under the valuation method of accounting or those that result in consolidation of the investee - to be measured at fair value with changes in fair value recognized in net income. However, an entity may choose to measure equity investments that do not have readily determinable fair values at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer. ASU No. 2016-01 is intended to simplify the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment. ASU No. 2016-01 also eliminates certain disclosures related to the fair value of financial instruments and requires entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes. ASU No 2016-01 was effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The Company adopted ASU No. 2016-01 on October 1, 2018. As required by ASU No. 2016-01, on October 1, 2018 the Company recorded a one-time cumulative effect adjustment of $63 representing net unrealized losses on equity securities between accumulated other comprehensive loss and retained earnings on the accompanying consolidated balance sheet. Additionally, the fair values of financial instruments for disclosure purposes were computed using an exit price notion and deposits with no stated maturity are no longer included in the fair value disclosures in Note 9. In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) . This ASU is intended to increase transparency and comparability among organizations by requiring the recognition of lease assets and lease liabilities on the balance sheet and disclosure of key information about leasing arrangements. The principal change required by this ASU relates to lessee accounting, and is that for operating leases, a lessee is required to (1) recognize a right-of-use asset and a lease liability, initially measured at the present value of the lease payments, in the statement of financial position, (2) recognize a single lease cost, calculated so that the cost of the lease is allocated over the lease term on a generally straight-line basis, and (3) classify all cash payments within operating activities in the statement of cash flows. For leases with a term of 12 months or less, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize lease assets and lease liabilities. If a lessee makes this election, it should recognize lease expense for such leases generally on a straight-line basis over the lease term. This ASU also changes disclosure requirements related to leasing activities and requires certain qualitative disclosures along with specific quantitative disclosures. In July 2018, the FASB issued ASU No. 2018-11, Leases (Topic 842), Targeted Improvements . This ASU amended the new lease standard to give entities another option for transition and to provide lessors with a practical expedient. The transition option allows entities to not apply the new leases standard in comparative periods they present in their financial statements in the year of adoption. The practical expedient provides lessors with an option to not separate non-lease components from the associated lease components when certain criteria are met and requires them to account for the combined component in accordance with the ASC 606 if the associated non-lease components are the predominant components. The amendments have the same effective date as ASU No. 2016-02. The amendments in ASU No. 2016-02 are effective for fiscal years, including interim periods within those fiscal years, beginning after December 15, 2018. Early application of the amendments in this ASU is permitted. The effect of adoption of this ASU will depend on the nature and terms of the Company's leases at the time of adoption. Once adopted, the Company expects to report higher assets and liabilities as a result of including right-of-use assets and lease liabilities related to certain banking offices and certain equipment under non-cancelable operating lease agreements; however, based on current leases the adoption of ASU No. 2016-02 is not expected to have a material impact on the Company's future consolidated financial statements. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses . This ASU replaces the existing incurred losses methodology with a current expected losses methodology with respect to most financial assets measured at amortized cost and certain other instruments, including trade and other receivables, loans, held to maturity investment securities and off-balance sheet commitments. In addition, this ASU requires credit losses relating to available for sale debt securities to be recorded through an allowance for credit losses rather than as a reduction of the carrying amount. ASU No. 2016-13 also changes the accounting for purchased credit-impaired debt securities and loans. ASU No. 2016-13 retains many of the current disclosure requirements in GAAP and expands disclosure requirements. ASU No. 2016-13 is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Upon adoption, the Company expects a change in the processes and procedures to calculate the allowance for loan losses, including changes in the assumptions and estimates to consider expected credit losses over the life of the loan versus the current accounting practice that utilizes the incurred loss model. In addition, the current policy for other-than-temporary impairment on investment securities available for sale will be replaced with an allowance approach. The Company is reviewing the requirements of ASU No. 2016-13 and has begun developing and implementing processes and procedures to ensure it is fully compliant with the amendments at the adoption date. At this time, the Company anticipates the allowance for loan losses will increase as a result of the implementation of this ASU; however, until its evaluation is complete, the magnitude of the increase will be unknown. In January 2017, the FASB issued ASU No. 2017-04, Intangibles - Goodwill and Other: Simplifying the Test for Goodwill Impairment. This ASU simplifies the subsequent measurement of goodwill and eliminates Step 2 from the goodwill impairment test. In computing the implied fair value of goodwill under Step 2, an entity had to perform procedures to determine the fair value of its assets and liabilities (including unrecognized assets and liabilities) at the impairment testing date following the procedure that would be required in determining the fair value of assets acquired and liabilities assumed in a business combination. Under ASU No. 2017-04, an entity should perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An entity should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit's fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. Additionally, an entity should consider income tax effects from any tax deductible goodwill on the carrying amount of the reporting unit when measuring the goodwill impairment loss, if applicable. ASU No. 2017-04 will be effective for annual or interim goodwill impairment tests in fiscal years beginning after December 15, 2019. Early application of this ASU is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The adoption of ASU No. 2017-04 is not expected to have a material impact on the Company's future consolidated financial statements. In March 2017, the FASB issued ASU No. 2017-08, Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities. This ASU shortens the amortization period for certain callable debt securities held at a premium to the earliest call date. This ASU is effective for fiscal years, including interim periods within those fiscal years, beginning after December 15, 2018. The adoption of ASU No. 2017-08 is not expected to have a material impact on the Company's future consolidated financial statements. In May 2017, the FASB issued ASU No. 2017-09, Compensation--Stock Compensation (Topic 718): Scope of Modification Accounting. This ASU was issued to provide clarity as to when to apply modification accounting when there is a change in the terms or conditions of a share-based payment award. According to the ASU, an entity should account for the effects of a modification unless the fair value, vesting conditions, and balance sheet classification of the award are the same after the modification as compared to the original award prior to modification. ASU No. 2017-09 was effective for fiscal years, including interim periods within those fiscal years, beginning after December 15, 2017, with early adoption permitted. The Company adopted this ASU on October 1, 2018. The adoption of ASU No. 2017-09 did not have a material impact on the Company's consolidated financial statements. In June 2018, the FASB issued ASU No. 2018-07, Compensation - Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting . This ASU was issued to expand the scope of Topic 718 to include share-based payment transactions for acquiring goods and services from nonemployees. Previously, these awards were recorded at the fair value of consideration received or the fair value of the equity instruments issued and was measured at the earlier of the commitment date or the date performance was completed. The amendments in this ASU require nonemployee share-based payment awards to be measured at the grant-date fair value of the equity instrument. ASU No. 2018-07 is effective for fiscal years, including interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted, but no earlier than an entity's adoption of Topic 606. The adoption of ASU No. 2018-07 is not expected to have a material impact on the Company's future consolidated financial statements.
Revenue from Contracts with Customers	ASC 606 applies to all contracts with customers to provide goods or services in the ordinary course of business, except for contracts that are specifically excluded from its scope. The majority of the Company's revenues are composed of interest income, deferred loan fee accretion, premium/discount accretion, gains on sales of loans and investments, BOLI net earnings, servicing income on loans sold and other loan fee income, which are not in the scope of ASC 606. Revenue reported as service charges on deposits, ATM and debit card interchange transaction fees, merchant services fees, non-deposit investment fees and escrow fees are within the scope of ASC 606. All of the Company's revenue from contracts with customers in the scope of ASC 606 is recognized in non-interest income with the exception of gains on sale of OREO and gains on sales/disposition of premises and equipment, which are included in non-interest expense. If a contract is determined to be within the scope of ASC 606, the Company recognizes revenue when it satisfies its performance obligation. Descriptions of our revenue-generating activities that are within the scope of ASC 606 are as follows: • Service Charges on Deposits: The Company earns fees from its deposit customers from a variety of deposit products and services. Non-transaction based fees such as account maintenance fees and monthly statement fees are considered to be provided to the customer under a day-to-day contract with ongoing renewals. Revenue for these non-transaction fees are earned over the course of a month, representing the period over which the Company satisfies the performance obligation. Transaction-based fees such as non-sufficient fund charges, stop payment charges and wire fees are recognized at the time the transaction is executed as the contract duration does not extend beyond the service performed. • ATM and Debit Card Interchange Transaction Fees: The Company earns fees from cardholder transactions conducted through third party payment network providers which consist of interchange fees earned from the payment networks as a debit card issuer. These fees are recognized when the transaction occurs, but may settle on a daily or monthly basis. • Escrow Fees: The Company earns fees from real estate escrow contracts with customers. The Company receives and disburses money and/or property per the customers contract. Fees are recognized when the escrow contract closes. • Fee Income from Non-deposit Investment Sales: The Company earns fees from contracts with customers for investment activities. Revenues are generally recognized on a monthly basis and are generally based on a percentage of the customer's assets under management or based on investment solutions that are implemented for the customer.

Business Combinations (Tables)

Business Combinations (Tables)	3 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
Schedule of Business Acquisitions	The table below presents the significant operating results of the acquired business since the October 1, 2018 merger date: Three Months Ended December 31, 2018 (Dollars in thousands) Interest income: Interest and fees on loans (1) $ 1,738 Interest income: Interest and dividends on investment securities and FHLB stock 201 Interest income: Other interest earning assets 100 Interest expense (128 ) Provision for loan losses — Non-interest income 139 Non-interest expense (2) (860 ) Net effect, pre-tax $ 1,190 As a result, actual amounts would have differed from the unaudited pro forma information presented. Unaudited Pro Forma Three Months Ended December 31, 2018 2017 (Dollars in thousands except per share data) Total revenues (net interest income plus non-interest income) $ 15,610 $ 14,362 Net income 5,666 3,789 Basic net income per common share 0.68 0.46 Diluted net income per common share 0.67 0.45 The following table summarizes the fair value of consideration paid, the preliminary estimated fair values of assets acquired and liabilities assumed as of the acquisition date, and the resulting preliminary goodwill relating to the transaction: At October 1, 2018 Book Value Fair Value Adjustment Estimated Fair Value (Dollars in thousands) Total merger consideration $ 35,170 Recognized amounts of identifiable assets acquired and liabilities assumed Identifiable assets acquired: Cash and cash equivalents $ 21,187 $ — 21,187 CDs held for investment 2,973 — 2,973 FHLB stock 205 — 205 Investment securities 24,913 (189 ) 24,724 Loans receivable 123,627 (2,083 ) 121,544 Premises and equipment 3,225 112 3,337 OREO 25 — 25 Accrued interest receivable 554 — 554 BOLI 2,629 — 2,629 CDI — 2,483 2,483 MSRs 285 (4 ) 281 Other assets 883 — 883 Total assets 180,506 319 180,825 Liabilities assumed: Deposits 151,378 160 151,538 Other liabilities and accrued expenses 3,087 — 3,087 Total liabilities assumed 154,465 160 154,625 Total identifiable net assets acquired $ 26,041 $ 159 26,200 Preliminary goodwill recognized $ 8,970

Investment Securities (Tables)

Investment Securities (Tables)	3 Months Ended
	Dec. 31, 2018
Investments [Abstract]
Marketable Securities	Held to maturity and available for sale investment securities have been classified according to management’s intent and were as follows as of December 31, 2018 and September 30, 2018 (dollars in thousands): Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value December 31, 2018 Held to maturity Mortgage-backed securities ("MBS"): U.S. government agencies $ 20,551 $ 90 $ (25 ) $ 20,616 Private label residential 424 527 (2 ) 949 U.S. Treasury and U.S government agency securities 10,975 — (68 ) 10,907 Total $ 31,950 $ 617 $ (95 ) $ 32,472 Available for sale MBS: U.S. government agencies $ 2,299 $ 8 $ (110 ) $ 2,197 Total $ 2,299 $ 8 $ (110 ) $ 2,197 September 30, 2018 Held to maturity MBS: U.S. government agencies $ 1,385 $ 8 $ (21 ) $ 1,372 Private label residential 460 552 (2 ) 1,010 U.S. Treasury and U.S. government agency securities 10,965 — (83 ) 10,882 Total $ 12,810 $ 560 $ (106 ) $ 13,264 Available for sale MBS: U.S. government agencies $ 231 $ 7 $ (1 ) $ 237 Total $ 231 $ 7 $ (1 ) $ 237
Unrealized Gain (Loss) on Investments	Held to maturity and available for sale investment securities with unrealized losses were as follows as of December 31, 2018 (dollars in thousands): Less Than 12 Months 12 Months or Longer Total Estimated Fair Value Gross Unrealized Losses Quantity Estimated Fair Value Gross Unrealized Losses Quantity Estimated Fair Value Gross Unrealized Losses Held to maturity MBS: U.S. government agencies $ 1,443 $ (10 ) 7 $ 960 $ (15 ) 6 $ 2,403 $ (25 ) Private label residential — — — 45 (2 ) 7 45 (2 ) U.S. Treasury and U.S. government agency securities 4,970 (7 ) 1 5,936 (61 ) 2 10,906 (68 ) Total $ 6,413 $ (17 ) 8 $ 6,941 $ (78 ) 15 $ 13,354 $ (95 ) Available for sale MBS: U.S. government agencies $ 2,004 $ (110 ) 7 $ — $ — — $ 2,004 $ (110 ) Total $ 2,004 $ (110 ) 7 $ — $ — — $ 2,004 $ (110 ) Held to maturity and available for sale investment securities with unrealized losses were as follows as of September 30, 2018 (dollars in thousands): Less Than 12 Months 12 Months or Longer Total Estimated Fair Value Gross Unrealized Losses Quantity Estimated Fair Value Gross Unrealized Losses Quantity Estimated Fair Value Gross Unrealized Losses Held to maturity MBS: U.S. government agencies $ 954 $ (20 ) 2 $ 64 $ (1 ) 5 $ 1,018 $ (21 ) Private label residential — — — 50 (2 ) 8 50 (2 ) U.S. Treasury and U.S. government agency securities 7,946 (22 ) 2 2,935 (61 ) 1 10,881 (83 ) Total $ 8,900 $ (42 ) 4 $ 3,049 $ (64 ) 14 $ 11,949 $ (106 ) Available for sale MBS: U.S. government agencies $ 34 $ (1 ) 1 $ — $ — — $ 34 $ (1 ) Total $ 34 $ (1 ) 1 $ — $ — — $ 34 $ (1 )
Schedule of Significant Inputs Utilized to Measure Estimate of Credit Loss Component on OTTI Securities	The following table presents a summary of the significant inputs utilized to measure management’s estimates of the credit loss component on OTTI securities as of December 31, 2018 and 2017: Range Weighted Minimum Maximum Average December 31, 2018 Constant prepayment rate 6.00 % 15.00 % 13.56 % Collateral default rate — % 11.94 % 5.72 % Loss severity rate — % 77.00 % 46.97 % December 31, 2017 Constant prepayment rate 6.00 % 15.00 % 9.91 % Collateral default rate — % 11.08 % 4.77 % Loss severity rate — % 62.00 % 37.32 %
Other than Temporary Impairment, Credit Losses Recognized in Earnings	The following table presents the OTTI recoveries (losses) for the three months ended December 31, 2018 and 2017 (dollars in thousands): Three Months Ended Three Months Ended Held To Maturity Available For Sale Held To Maturity Available For Sale Total recoveries $ 11 $ — $ 27 $ — Adjustment for portion of OTTI transferred from other comprehensive income (loss) before income taxes (1) — — (5 ) — Net recoveries recognized in earnings (2) $ 11 $ — $ 22 $ — _________________ (1) Represents OTTI related to all other factors. (2) Represents OTTI related to credit losses. The following table presents a roll forward of the credit loss component of held to maturity and available for sale debt securities that have been written down for OTTI with the credit loss component recognized in earnings for the three months ended December 31, 2018 and 2017 (dollars in thousands): Three Months Ended December 31, 2018 2017 Beginning balance of credit loss $ 1,153 $ 1,301 Additions: Additional increases to the amount related to credit loss for which OTTI was previously recognized 1 6 Subtractions: Realized losses previously recorded as credit losses (20 ) (22 ) Recovery of prior credit loss (12 ) (26 ) Ending balance of credit loss $ 1,122 $ 1,259
Schedule of Contractual Maturities of Debt Securities	The contractual maturities of debt securities at December 31, 2018 were as follows (dollars in thousands). Expected maturities may differ from scheduled maturities due to the prepayment of principal or call provisions. Held to Maturity Available for Sale Amortized Cost Estimated Fair Value Amortized Cost Estimated Fair Value Due within one year $ 7,978 $ 7,960 $ — $ — Due after one year to five years 7,192 7,142 — — Due after five years to ten years 969 974 447 434 Due after ten years 15,811 16,396 1,852 1,763 Total $ 31,950 $ 32,472 $ 2,299 $ 2,197

Loans Receivable And Allowanc_2

Loans Receivable And Allowance For Loan Losses (Tables)	3 Months Ended
	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Schedule of Loans receivable and Loans held for sale	Loans receivable by portfolio segment consisted of the following at December 31, 2018 and September 30, 2018 (dollars in thousands): December 31, September 30, Amount Percent Amount Percent Mortgage loans: One- to four-family (1) $ 130,219 13.4 % $ 115,941 14.1 % Multi-family 72,076 7.4 61,928 7.5 Commercial 426,144 43.9 345,113 42.0 Construction - custom and owner/builder 119,214 12.3 119,555 14.6 Construction - speculative one- to four-family 17,934 1.9 15,433 1.9 Construction - commercial 42,416 4.4 39,590 4.8 Construction - multi-family 25,645 2.6 10,740 1.3 Construction - land development 10,578 1.1 3,040 0.4 Land 22,734 2.3 25,546 3.1 Total mortgage loans 866,960 89.3 736,886 89.8 Consumer loans: Home equity and second mortgage 40,468 4.2 37,341 4.5 Other 4,443 0.5 3,515 0.5 Total consumer loans 44,911 4.7 40,856 5.0 Commercial business loans 58,202 6.0 43,053 5.2 Total loans receivable 970,073 100.0 % 820,795 100.0 % Less: Undisbursed portion of construction loans in process 100,595 83,237 Deferred loan origination fees, net 2,875 2,637 Allowance for loan losses 9,533 9,530 113,003 95,404 Loans receivable, net $ 857,070 $ 725,391 _____________________________ (1) Does not include one- to four-family loans held for sale totaling $2,988 and $1,785 at December 31, 2018 and September 30, 2018, respectively.
Schedule of Allowance for Loan Losses	The following tables set forth information for the three months ended December 31, 2018 and 2017 regarding activity in the allowance for loan losses by portfolio segment (dollars in thousands): Three Months Ended December 31, 2018 Beginning Allowance Provision for (Recapture of) Loan Losses Charge- offs Recoveries Ending Allowance Mortgage loans: One- to four-family $ 1,086 $ 73 $ — $ — $ 1,159 Multi-family 433 16 — — 449 Commercial 4,248 (9 ) — — 4,239 Construction – custom and owner/builder 671 (28 ) — — 643 Construction – speculative one- to four-family 178 28 — — 206 Construction – commercial 563 (177 ) — — 386 Construction – multi-family 135 74 — — 209 Construction – land development 49 94 — — 143 Land 844 (91 ) — 4 757 Consumer loans: Home equity and second mortgage 649 17 — — 666 Other 117 (15 ) (2 ) 1 101 Commercial business loans 557 18 — — 575 Total $ 9,530 $ — $ (2 ) $ 5 $ 9,533 Three Months Ended December 31, 2017 Beginning Allowance Provision for (Recapture of) Loan Losses Charge- offs Recoveries Ending Allowance Mortgage loans: One- to four-family $ 1,082 $ 43 $ — $ — $ 1,125 Multi-family 447 (17 ) — — 430 Commercial 4,184 (91 ) — — 4,093 Construction – custom and owner/builder 699 89 — — 788 Construction – speculative one- to four-family 128 (61 ) — 8 75 Construction – commercial 303 93 — — 396 Construction – multi-family 173 55 — — 228 Land 918 (142 ) — 4 780 Consumer loans: Home equity and second mortgage 983 (25 ) — — 958 Other 121 8 (1 ) 1 129 Commercial business loans 515 48 — — 563 Total $ 9,553 $ — $ (1 ) $ 13 $ 9,565
Schedule of loans evaluated individually for impairment and collectively evaluated for impairment in the allowance for loan losses	The following tables present information on the loans evaluated individually and collectively for impairment in the allowance for loan losses by portfolio segment at December 31, 2018 and September 30, 2018 (dollars in thousands): Allowance for Loan Losses Recorded Investment in Loans Individually Evaluated for Impairment Collectively Evaluated for Impairment Total Individually Evaluated for Impairment Collectively Evaluated for Impairment Total December 31, 2018 Mortgage loans: One- to four-family $ — $ 1,159 $ 1,159 $ 1,014 $ 129,205 $ 130,219 Multi-family — 449 449 — 72,076 72,076 Commercial — 4,239 4,239 2,436 423,708 426,144 Construction – custom and owner/builder — 643 643 — 64,313 64,313 Construction – speculative one- to four-family — 206 206 — 9,221 9,221 Construction – commercial — 386 386 — 25,883 25,883 Construction – multi-family — 209 209 — 9,333 9,333 Construction – land development — 143 143 — 6,442 6,442 Land 79 678 757 396 22,338 22,734 Consumer loans: Home equity and second mortgage — 666 666 386 40,082 40,468 Other — 101 101 — 4,443 4,443 Commercial business loans 58 517 575 299 57,903 58,202 Total $ 137 $ 9,396 $ 9,533 $ 4,531 $ 864,947 $ 869,478 September 30, 2018 Mortgage loans: One- to four-family $ — $ 1,086 $ 1,086 $ 1,054 $ 114,887 $ 115,941 Multi-family — 433 433 — 61,928 61,928 Commercial — 4,248 4,248 2,446 342,667 345,113 Construction – custom and owner/builder — 671 671 — 67,024 67,024 Construction – speculative one- to four-family — 178 178 — 7,107 7,107 Construction – commercial — 563 563 — 23,440 23,440 Construction – multi-family — 135 135 — 5,983 5,983 Construction – land development — 49 49 — 1,567 1,567 Land 34 810 844 243 25,303 25,546 Consumer loans: Home equity and second mortgage — 649 649 359 36,982 37,341 Other — 117 117 — 3,515 3,515 Commercial business loans 63 494 557 170 42,883 43,053 Total $ 97 $ 9,433 $ 9,530 $ 4,272 $ 733,286 $ 737,558
Past Due Status of Loans Receivable	The following tables present an analysis of loans by aging category and portfolio segment at December 31, 2018 and September 30, 2018 (dollars in thousands): 30–59 Days Past Due 60-89 Days Past Due Non- Accrual (1) Past Due 90 Days or More and Still Accruing Total Past Due Current Total Loans December 31, 2018 Mortgage loans: One- to four-family $ — $ — $ 509 $ — $ 509 $ 129,710 $ 130,219 Multi-family — — — — — 72,076 72,076 Commercial 317 776 — — 1,093 425,051 426,144 Construction – custom and owner/builder — — — — — 64,313 64,313 Construction – speculative one- to four- family — — — — — 9,221 9,221 Construction – commercial — — — — — 25,883 25,883 Construction – multi-family — — — — — 9,333 9,333 Construction – land development 228 — — — 228 6,214 6,442 Land — 108 396 — 504 22,230 22,734 Consumer loans: Home equity and second mortgage — 37 386 — 423 40,045 40,468 Other 10 16 — — 26 4,417 4,443 Commercial business loans 174 — 299 — 473 57,729 58,202 Total $ 729 $ 937 $ 1,590 $ — $ 3,256 $ 866,222 $ 869,478 September 30, 2018 Mortgage loans: One- to four-family $ 557 $ — $ 545 $ — $ 1,102 $ 114,839 $ 115,941 Multi-family — — — — — 61,928 61,928 Commercial 574 — — — 574 344,539 345,113 Construction – custom and owner/ — — — — — 67,024 67,024 Construction – speculative one- to four- family — — — — — 7,107 7,107 Construction – commercial — — — — — 23,440 23,440 Construction – multi-family — — — — — 5,983 5,983 Construction – land development — — — — — 1,567 1,567 Land 40 — 243 — 283 25,263 25,546 Consumer loans: Home equity and second mortgage 42 — 359 — 401 36,940 37,341 Other 10 16 — — 26 3,489 3,515 Commercial business loans — — 170 — 170 42,883 43,053 Total $ 1,223 $ 16 $ 1,317 $ — $ 2,556 $ 735,002 $ 737,558 ______________________ (1) Includes non-accrual loans past due 90 days or more and other loans classified as non-accrual.
Financing Receivable Credit Quality Indicators	The following tables present an analysis of loans by credit quality indicator and portfolio segment at December 31, 2018 and September 30, 2018 (dollars in thousands): Loan Grades December 31, 2018 Pass Watch Special Substandard Total Mortgage loans: One- to four-family $ 127,116 $ 707 $ 574 $ 1,822 $ 130,219 Multi-family 72,076 — — — 72,076 Commercial 416,329 8,332 649 834 426,144 Construction – custom and owner/builder 64,094 219 — — 64,313 Construction – speculative one- to four-family 9,221 — — — 9,221 Construction – commercial 25,883 — — — 25,883 Construction – multi-family 9,333 — — — 9,333 Construction – land development 6,442 — — — 6,442 Land 20,116 979 1,243 396 22,734 Consumer loans: Home equity and second mortgage 39,802 82 — 584 40,468 Other 4,409 34 — — 4,443 Commercial business loans 57,735 119 49 299 58,202 Total $ 852,556 $ 10,472 $ 2,515 $ 3,935 $ 869,478 September 30, 2018 Mortgage loans: One- to four-family $ 113,148 $ 882 $ 581 $ 1,330 $ 115,941 Multi-family 61,928 — — — 61,928 Commercial 334,908 8,375 988 842 345,113 Construction – custom and owner/builder 66,720 304 — — 67,024 Construction – speculative one- to four-family 7,107 — — — 7,107 Construction – commercial 23,440 — — — 23,440 Construction – multi-family 5,983 — — — 5,983 Construction – land development 1,567 — — — 1,567 Land 22,810 988 1,505 243 25,546 Consumer loans: Home equity and second mortgage 36,697 82 — 562 37,341 Other 3,480 — — 35 3,515 Commercial business loans 42,812 22 49 170 43,053 Total $ 720,600 $ 10,653 $ 3,123 $ 3,182 $ 737,558
Impaired Loans Receivable	The following table is a summary of information related to impaired loans by portfolio segment as of December 31, 2018 and for the three months then ended (dollars in thousands): Recorded Investment Unpaid Principal Balance (Loan Balance Plus Charge Off) Related Allowance Year to Date ("YTD") Average Recorded Investment (1) YTD Interest Income Recognized (1) YTD Cash Basis Interest Income Recognized (1) With no related allowance recorded: Mortgage loans: One- to four-family $ 1,014 $ 1,161 $ — $ 1,034 $ 18 $ 16 Commercial 2,436 2,436 — 2,441 40 31 Land — 78 — 45 — — Consumer loans: Home equity and second mortgage 386 386 — 373 — — Commercial business loans 114 114 — 57 — — Subtotal 3,950 4,175 — 3,950 58 47 With an allowance recorded: Mortgage loans: Land 396 396 79 198 — — Consumer loans: Home equity and second mortgage — — — 77 — — Commercial business loans 185 185 58 178 — — Subtotal 581 581 137 453 — — Total: Mortgage loans: One- to four-family 1,014 1,161 — 1,034 18 16 Commercial 2,436 2,436 — 2,441 40 31 Land 396 474 79 243 — — Consumer loans: Home equity and second mortgage 386 386 — 450 — — Commercial business loans 299 299 58 235 — — Total $ 4,531 $ 4,756 $ 137 $ 4,403 $ 58 $ 47 ______________________________________________ (1) For the three months ended December 31, 2018 . The following table is a summary of information related to impaired loans by portfolio segment as of and for the year ended September 30, 2018 (dollars in thousands): Recorded Investment Unpaid Principal Balance (Loan Balance Plus Charge Off) Related Allowance Average Recorded Investment (1) Interest Income Recognized (1) Cash Basis Interest Income Recognized (1) With no related allowance recorded: Mortgage loans: One- to four-family $ 1,054 $ 1,200 $ — $ 1,422 $ 80 $ 69 Commercial 2,446 2,446 — 2,389 121 93 Land 90 195 — 283 11 10 Consumer loans: Home equity and second mortgage 359 359 — 210 3 3 Subtotal 3,949 4,200 — 4,304 215 175 With an allowance recorded: Mortgage loans: One- to four-family — — — 9 — — Commercial — — — 760 28 21 Land 153 153 34 383 9 8 Consumer loans: Home equity and second mortgage — — — 310 16 13 Commercial business loans 170 170 63 141 — — Subtotal 323 323 97 1,603 53 42 Total: Mortgage loans: One- to four-family 1,054 1,200 — 1,431 80 69 Commercial 2,446 2,446 — 3,149 149 114 Land 243 348 34 666 20 18 Consumer loans: Home equity and second mortgage 359 359 — 520 19 16 Commercial business loans 170 170 63 141 — — Total $ 4,272 $ 4,523 $ 97 $ 5,907 $ 268 $ 217 ______________________________________________ (1) For the year ended September 30, 2018.
Schedule of Troubled Debt Restructured Loans by Interest Accrual Status	The following tables set forth information with respect to the Company’s TDRs by interest accrual status as of December 31, 2018 and September 30, 2018 (dollars in thousands): December 31, 2018 Accruing Non- Accrual Total Mortgage loans: One- to four-family $ 505 $ 146 $ 651 Commercial 2,436 — 2,436 Commercial business loans — 162 162 Total $ 2,941 $ 308 $ 3,249 September 30, 2018 Accruing Non- Accrual Total Mortgage loans: One- to four-family $ 509 $ — $ 509 Commercial 2,446 — 2,446 Land — 153 153 Commercial business loans — 170 170 Total $ 2,955 $ 323 $ 3,278

Net Income Per Common Share (Ta

Net Income Per Common Share (Tables)	3 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
Schedule of Earnings per Share	Information regarding the calculation of basic and diluted net income per common share for the three months ended December 31, 2018 and 2017 is as follows (dollars in thousands, except per share amounts): Three Months Ended December 31, 2018 2017 Basic net income per common share computation Numerator – net income $ 5,615 $ 3,614 Denominator – weighted average common shares outstanding 8,293,212 7,312,531 Basic net income per common share $ 0.68 $ 0.49 Diluted net income per common share computation Numerator – net income $ 5,615 $ 3,614 Denominator – weighted average common shares outstanding 8,293,212 7,312,531 Effect of dilutive stock options (1) 164,491 195,638 Weighted average common shares outstanding - assuming dilution 8,457,703 7,508,169 Diluted net income per common share $ 0.66 $ 0.48 ____________________________________________ (1) For the three months ended December 31, 2018, average options to purchase 102,850 shares of common were outstanding but not included in the computation of diluted net income per share because their effect would have been anti-dilutive. For the three months ended December 31, 2017, average options to purchase 14,651 shares of common stock were outstanding but not included in the computation of diluted net income per share because their effect would have been anti-dilutive.

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	3 Months Ended
	Dec. 31, 2018
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	The changes in accumulated other comprehensive loss ("AOCI") by component during the three months ended December 31, 2018 and 2017 are as follows (dollars in thousands): Three Months Ended December 31, 2018 Changes in fair value of available for sale securities (1) Changes in OTTI on held to maturity securities (1) Total (1) Balance of AOCI at the beginning of period $ (58 ) $ (71 ) $ (129 ) Other comprehensive loss (86 ) 7 (79 ) Adoption of ASU 2016-01 63 — 63 Balance of AOCI at the end of period $ (81 ) $ (64 ) $ (145 ) Three Months Ended December 31, 2017 Changes in fair value of available for sale securities (1) Changes in OTTI on held to maturity securities (1) Total (1) Balance of AOCI at the beginning of period $ (19 ) $ (105 ) $ (124 ) Other comprehensive loss (7 ) (5 ) (12 ) Balance of AOCI at the end of period $ (26 ) $ (110 ) $ (136 ) __________________________ (1) All amounts are net of income taxes.

Stock Compensation Plans (Table

Stock Compensation Plans (Tables)	3 Months Ended
	Dec. 31, 2018
Share-based Compensation [Abstract]
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award	Stock option activity for the three months ended December 31, 2018 and 2017 is summarized as follows: Three Months Ended Three Months Ended Number of Shares Weighted Average Exercise Price Number of Shares Weighted Average Exercise Price Options outstanding, beginning of period 380,820 $ 16.03 380,120 $ 13.23 Exercised (7,400 ) 9.55 (6,250 ) 9.65 Forfeited (3,700 ) 18.03 (4,300 ) 11.66 Options outstanding, end of period 369,720 $ 16.14 369,570 $ 13.31
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range	Additional information regarding options outstanding at December 31, 2018 is as follows: Options Outstanding Options Exercisable Range of Exercise Prices ($) Number Weighted Average Exercise Price Weighted Average Remaining Contractual Life (Years) Number Weighted Average Exercise Price Weighted Average Remaining Contractual Life (Years) $ 4.01 - 4.55 2,500 $ 4.33 1.7 2,500 $ 4.33 1.7 5.86 - 6.00 27,850 5.96 3.8 27,850 5.96 3.8 9.00 68,000 9.00 4.8 68,000 9.00 4.8 10.26 - 10.71 118,420 10.57 6.3 66,120 10.56 6.2 15.67 50,700 15.67 7.8 18,900 15.67 7.8 29.69 56,300 29.69 8.8 11,500 29.69 8.8 31.80 45,950 31.80 9.8 — N/A N/A 369,720 $ 16.14 6.8 194,870 $ 10.90 5.6

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value, Assets Measured on Recurring Basis	The Company's assets measured at estimated fair value on a recurring basis at December 31, 2018 and September 30, 2018 were as follows (dollars in thousands): December 31, 2018 Estimated Fair Value Level 1 Level 2 Level 3 Total Available for sale investment securities MBS: U.S. government agencies $ — $ 2,197 $ — $ 2,197 Investments in equity securities Mutual funds 925 — — 925 Total $ 925 $ 2,197 $ — $ 3,122 September 30, 2018 Estimated Fair Value Level 1 Level 2 Level 3 Total Available for sale investment securities MBS: U.S. government agencies $ — $ 237 $ — $ 237 Investments in equity securities Mutual funds 917 — — 917 Total $ 917 $ 237 $ — $ 1,154
Balances of Assets Measured at Estimated Fair Value, Nonrecurring Basis	The following table summarizes the balances of assets measured at estimated fair value on a non-recurring basis at September 30, 2018 (dollars in thousands): Estimated Fair Value Level 1 Level 2 Level 3 Impaired loans: Mortgage loans: Land $ — $ — $ 119 Commercial business loans — — 107 Total impaired loans — — 226 Investment securities – held to maturity: MBS - private label residential — 3 — OREO and other repossessed assets — — 1,913 Total $ — $ 3 $ 2,139 The following table summarizes the balances of assets measured at estimated fair value on a non-recurring basis at December 31, 2018 (dollars in thousands): Estimated Fair Value Level 1 Level 2 Level 3 Impaired loans: Mortgage loans: Land $ — $ — $ 317 Commercial business loans — — 127 Total impaired loans — — 444 Investment securities – held to maturity: MBS - private label residential — 7 — OREO and other repossessed assets — — 2,026 Total $ — $ 7 $ 2,470
Level 3 Fair Value Measurements, Nonrecurring Basis	The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a non-recurring basis as of September 30, 2018 (dollars in thousands): Estimated Fair Value Valuation Technique(s) Unobservable Input(s) Range Impaired loans $ 226 Market approach Appraised value less selling costs NA OREO and other repossessed assets $ 1,913 Market approach Lower of appraised value or listing price less selling costs NA The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a non-recurring basis as of December 31, 2018 (dollars in thousands): Estimated Fair Value Valuation Technique(s) Unobservable Input(s) Range Impaired loans $ 444 Market approach Appraised value less selling costs NA OREO and other repossessed assets $ 2,026 Market approach Lower of appraised value or listing price less selling costs NA
Balances of Assets and Liabilities Measured at Estimated Fair Value, Recurring Basis	The recorded amounts and estimated fair values of financial instruments were as follows as of December 31, 2018 and September 30, 2018 (dollars in thousands): December 31, 2018 Fair Value Measurements Using: Recorded Amount Estimated Fair Value Level 1 Level 2 Level 3 Financial assets Cash and cash equivalents $ 161,743 $ 161,743 $ 161,743 $ — $ — CDs held for investment 65,830 65,830 65,830 — — Investment securities 35,072 35,594 8,844 26,750 — FHLB stock 1,395 1,395 1,395 — — Other investments 3,000 3,000 3,000 — — Loans held for sale 2,988 3,044 3,044 — — Loans receivable, net 857,070 843,968 — — 843,968 Accrued interest receivable 3,497 3,497 3,497 — — Financial liabilities Time deposits 154,773 153,836 — — 153,836 Accrued interest payable 295 295 295 — — September 30, 2018 Fair Value Measurements Using: Recorded Amount Estimated Fair Value Level 1 Level 2 Level 3 Financial assets Cash and cash equivalents $ 148,864 $ 148,864 $ 148,864 $ — $ — CDs held for investment 63,290 63,290 63,290 — — Investment securities 13,964 14,418 8,812 5,606 — FHLB stock 1,190 1,190 1,190 — — Other investments 3,000 3,000 3,000 — — Loans held for sale 1,785 1,814 1,814 — — Loans receivable, net 725,391 711,071 — — 711,071 Accrued interest receivable 2,877 2,877 2,877 — — Financial liabilities Time deposits 141,808 140,831 — — 140,831 Accrued interest payable 225 225 225 — —

Summary Of Significant Accoun_3

Summary Of Significant Accounting Policies (Details)	3 Months Ended
	Dec. 31, 2018segment
Accounting Policies [Abstract]
Number of operating segments	1

Business Combinations - Narrati

Business Combinations - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	Oct. 01, 2018	Dec. 31, 2018	Dec. 31, 2017	Jun. 30, 2019	Sep. 30, 2018
Business Acquisition [Line Items]
Business combination, number of shares transferred (shares)		904,826
Goodwill acquired		$ 8,970
South Sound Merger
Business Acquisition [Line Items]
Business combination, number of shares transferred (shares)	904,826
Issued, value assigned	$ 28,270
Business combination, share price (dollars per share)	$ 31.24
Cash paid	$ 6,900
Total merger consideration	35,170
Goodwill acquired	8,970
Acquisition related costs	$ 64	$ 64	$ 41		$ 616
Timberland Bank | South Sound Merger
Business Acquisition [Line Items]
Shares issued (in dollars per share)	$ 0.746
South Sound Bank | South Sound Merger
Business Acquisition [Line Items]
Shares issued (in dollars per share)	$ 5.68825
Acquisition related costs			$ 2
Forecast | South Sound Merger
Business Acquisition [Line Items]
Acquisition related costs				$ 580

Business Combinations - Assets

Business Combinations - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Oct. 01, 2018	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Total assets		$ 180,825	$ 0
Total liabilities assumed		154,625	$ 0
Addition as a result of the South Sound Merger (see Note 2)		$ 8,970
South Sound Merger
Business Acquisition [Line Items]
Total merger consideration	$ 35,170
Addition as a result of the South Sound Merger (see Note 2)	8,970
Book Value | South Sound Merger
Business Acquisition [Line Items]
Cash and cash equivalents	21,187
CDs held for investment	2,973
FHLB stock	205
Investment securities	24,913
Loans receivable	123,627
Premises and equipment	3,225
OREO	25
Accrued interest receivable	554
BOLI	2,629
CDI	0
MSRs	285
Other assets	883
Total assets	180,506
Deposits	151,378
Other liabilities and accrued expenses	3,087
Total liabilities assumed	154,465
Total identifiable net assets acquired	26,041
Fair Value Adjustment | South Sound Merger
Business Acquisition [Line Items]
Cash and cash equivalents	0
CDs held for investment	0
FHLB stock	0
Investment securities	(189)
Loans receivable	(2,083)
Premises and equipment	112
OREO	0
Accrued interest receivable	0
BOLI	0
CDI	2,483
MSRs	(4)
Other assets	0
Total assets	319
Deposits	160
Other liabilities and accrued expenses	0
Total liabilities assumed	160
Total identifiable net assets acquired	159
Estimated Fair Value | South Sound Merger
Business Acquisition [Line Items]
Total merger consideration	35,170
Cash and cash equivalents	21,187
CDs held for investment	2,973
FHLB stock	205
Investment securities	24,724
Loans receivable	121,544
Premises and equipment	3,337
OREO	25
Accrued interest receivable	554
BOLI	2,629
CDI	2,483
MSRs	281
Other assets	883
Total assets	180,825
Deposits	151,538
Other liabilities and accrued expenses	3,087
Total liabilities assumed	154,625
Total identifiable net assets acquired	26,200
Addition as a result of the South Sound Merger (see Note 2)	$ 8,970

Business Combinations - Net Eff

Business Combinations - Net Effect of Acquisition (Details) - USD ($) $ in Thousands	Oct. 01, 2018	Dec. 31, 2018	Dec. 31, 2017	Sep. 30, 2018
Business Acquisition [Line Items]
Interest income: Interest and fees on loans		$ 11,782	$ 9,328
Interest expense		(971)	(601)
Non-interest income		3,266	3,137
Non-interest expense		(8,562)	(7,176)
Accretion of discount on purchased loans		(87)	0
South Sound Merger
Business Acquisition [Line Items]
Interest income: Interest and fees on loans		1,738
Interest income: Interest and dividends on investment securities and FHLB stock		201
Interest income: Other interest earning assets		100
Interest expense		(128)
Provision for loan losses		0
Non-interest income		139
Non-interest expense		(860)
Net effect, pre-tax		1,190
Acquisition related costs	$ 64	64	$ 41	$ 616
Accretion of discount on purchased loans		$ 87

Business Combinations - Pro For

Business Combinations - Pro Forma Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Net income	$ 5,615	$ 3,614
Basic (in dollars per share)	$ 0.68	$ 0.49
Diluted (in dollars per share)	$ 0.66	$ 0.48
Pro Forma | South Sound Merger
Business Acquisition [Line Items]
Total revenues (net interest income plus non-interest income)	$ 15,610	$ 14,362
Net income	$ 5,666	$ 3,789
Basic (in dollars per share)	$ 0.68	$ 0.46
Diluted (in dollars per share)	$ 0.67	$ 0.45

Investment Securities_ Marketab

Investment Securities: Marketable Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Sep. 30, 2018
Held to maturity
Amortized Cost	$ 31,950	$ 12,810
Gross Unrealized Gains	617	560
Gross Unrealized Losses	(95)	(106)
Estimated Fair Value	32,472	13,264
Available for sale
Estimated Fair Value	3,122	1,154
Mortgage-backed Securities, U.S. government agencies
Held to maturity
Amortized Cost	20,551	1,385
Gross Unrealized Gains	90	8
Gross Unrealized Losses	(25)	(21)
Estimated Fair Value	20,616	1,372
Available for sale
Amortized Cost	2,299	231
Gross Unrealized Gains	8	7
Gross Unrealized Losses	(110)	(1)
Estimated Fair Value	2,197	237
Mortgage-backed Securities, Private label residential
Held to maturity
Amortized Cost	424	460
Gross Unrealized Gains	527	552
Gross Unrealized Losses	(2)	(2)
Estimated Fair Value	949	1,010
U.S. Treasury and U.S government agency securities
Held to maturity
Amortized Cost	10,975	10,965
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(68)	(83)
Estimated Fair Value	$ 10,907	$ 10,882

Investment Securities_ Unrealiz

Investment Securities: Unrealized Gain (Loss) on Investments (Details) $ in Thousands	Dec. 31, 2018USD ($)security	Sep. 30, 2018USD ($)security
Held-to-maturity Securities, Fair Value:
Held to maturity, Less Than 12 Months, Estimated Fair Value	$ 6,413	$ 8,900
Held to maturity, 12 Months or Longer, Estimated Fair Value	6,941	3,049
Held to maturity, Total, Estimated Fair Value	13,354	11,949
Held-to-maturity Securities, Gross Unrealized Losses
Held to maturity, Less Than 12 Months, Gross Unrealized Losses	(17)	(42)
Held to maturity, 12 Months or Longer, Gross Unrealized Losses	(78)	(64)
Held to maturity, Total, Gross Unrealized Losses	$ (95)	$ (106)
Held to maturity, Less Than 12 Months, Quantity | security	8	4
Held to maturity, 12 Months or Longer, Quantity | security	15	14
Available-for-sale Securities, Fair Value:
Available for sale, Less Than 12 Months, Estimated Fair Value	$ 2,004	$ 34
Available for sale, 12 Months or Longer, Estimated Fair Value	0	0
Available for sale, Total, Estimated Fair Value	2,004	34
Available-for-sale Securities, Gross Unrealized Losses:
Available for sale, Less Than 12 Months, Gross Unrealized Losses	(110)	(1)
Available for sale, 12 Months or Longer, Gross Unrealized Losses	0	0
Available for sale, Total, Gross Unrealized Losses	$ (110)	$ (1)
Available-for-sale, Less than 12 Months, Quantity | security	7	1
Available-for-sale, 12 Months or Longer, Quantity | security	0	0
Mortgage-backed Securities, U.S. government agencies
Held-to-maturity Securities, Fair Value:
Held to maturity, Less Than 12 Months, Estimated Fair Value	$ 1,443	$ 954
Held to maturity, 12 Months or Longer, Estimated Fair Value	960	64
Held to maturity, Total, Estimated Fair Value	2,403	1,018
Held-to-maturity Securities, Gross Unrealized Losses
Held to maturity, Less Than 12 Months, Gross Unrealized Losses	(10)	(20)
Held to maturity, 12 Months or Longer, Gross Unrealized Losses	(15)	(1)
Held to maturity, Total, Gross Unrealized Losses	$ (25)	$ (21)
Held to maturity, Less Than 12 Months, Quantity | security	7	2
Held to maturity, 12 Months or Longer, Quantity | security	6	5
Available-for-sale Securities, Fair Value:
Available for sale, Less Than 12 Months, Estimated Fair Value	$ 2,004	$ 34
Available for sale, 12 Months or Longer, Estimated Fair Value	0	0
Available for sale, Total, Estimated Fair Value	2,004	34
Available-for-sale Securities, Gross Unrealized Losses:
Available for sale, Less Than 12 Months, Gross Unrealized Losses	(110)	(1)
Available for sale, 12 Months or Longer, Gross Unrealized Losses	0	0
Available for sale, Total, Gross Unrealized Losses	$ (110)	$ (1)
Available-for-sale, Less than 12 Months, Quantity | security	7	1
Available-for-sale, 12 Months or Longer, Quantity | security	0	0
Mortgage-backed Securities, Private label residential
Held-to-maturity Securities, Fair Value:
Held to maturity, Less Than 12 Months, Estimated Fair Value	$ 0	$ 0
Held to maturity, 12 Months or Longer, Estimated Fair Value	45	50
Held to maturity, Total, Estimated Fair Value	45	50
Held-to-maturity Securities, Gross Unrealized Losses
Held to maturity, Less Than 12 Months, Gross Unrealized Losses	0	0
Held to maturity, 12 Months or Longer, Gross Unrealized Losses	(2)	(2)
Held to maturity, Total, Gross Unrealized Losses	$ (2)	$ (2)
Held to maturity, Less Than 12 Months, Quantity | security	0	0
Held to maturity, 12 Months or Longer, Quantity | security	7	8
U.S. Treasury and U.S. government agency securities
Held-to-maturity Securities, Fair Value:
Held to maturity, Less Than 12 Months, Estimated Fair Value	$ 4,970	$ 7,946
Held to maturity, 12 Months or Longer, Estimated Fair Value	5,936	2,935
Held to maturity, Total, Estimated Fair Value	10,906	10,881
Held-to-maturity Securities, Gross Unrealized Losses
Held to maturity, Less Than 12 Months, Gross Unrealized Losses	(7)	(22)
Held to maturity, 12 Months or Longer, Gross Unrealized Losses	(61)	(61)
Held to maturity, Total, Gross Unrealized Losses	$ (68)	$ (83)
Held to maturity, Less Than 12 Months, Quantity | security	1	2
Held to maturity, 12 Months or Longer, Quantity | security	2	1

Investment Securities_ Schedule

Investment Securities: Schedule of significant inputs utilized to measure management's estimate of the credit loss component on OTTI securities (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Recoveries (other than temporary impairment OTTI) on investment securities	$ (11)	$ (27)
Net recoveries on investment securities	(11)	(22)
Held-to-maturity Securities
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Recoveries (other than temporary impairment OTTI) on investment securities	11	27
Held to Maturity - adjustment for portion of OTTI recorded as OCI before income taxes	0	(5)
Net recoveries on investment securities	11	22
Available-for-sale Securities
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
AFS - OTTI	0	0
AFS - - adjustment for portion of OTTI recorded as OCI before income taxes	0	0
AFS - Net OTTI recognized in earnings	$ 0	$ 0
Minimum
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
OTTI significant inputs - Constant prepayment rate	6.00%	6.00%
OTTI significant inputs - Collateral default rate	0.00%	0.00%
OTTI significant inputs - Loss severity rate	0.00%	0.00%
Maximum
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
OTTI significant inputs - Constant prepayment rate	15.00%	15.00%
OTTI significant inputs - Collateral default rate	11.94%	11.08%
OTTI significant inputs - Loss severity rate	77.00%	62.00%
Weighted Average
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
OTTI significant inputs - Constant prepayment rate	13.56%	9.91%
OTTI significant inputs - Collateral default rate	5.72%	4.77%
OTTI significant inputs - Loss severity rate	46.97%	37.32%

Investment Securities_ Other th

Investment Securities: Other than Temporary Impairment, Credit Losses Recognized in Earnings (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Beginning balance of credit loss	$ 1,153	$ 1,301
Additional increases to the amount related to credit loss for which OTTI was previously recognized	1	6
Realized losses previously recorded as credit losses	(20)	(22)
Recovery of prior credit loss	(12)	(26)
Ending balance of credit loss	$ 1,122	$ 1,259

Investment Securities_ Narrativ

Investment Securities: Narrative-Realized Gains (Losses) (Details) $ in Thousands	3 Months Ended
	Dec. 31, 2018USD ($)security	Dec. 31, 2017USD ($)security	Sep. 30, 2018USD ($)
Investments [Abstract]
Loss on sale of securities	$ 20	$ 22
Held-to-maturity securities, realized loss, number of securities | security	15	12
Security owned and pledged as collateral	$ 14,940		$ 12,100

Investment Securities_ Schedu_2

Investment Securities: Schedule of Contractual maturities of debt securities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Sep. 30, 2018
Held-to-maturity Securities, Amortized Cost:
Due within one year	$ 7,978
Due after one year to five years	7,192
Due after five years to ten years	969
Due after ten years	15,811
Total	31,950	$ 12,810	[1]
Held-to-maturity Securities, Estimated Fair Value:
Due within one year	7,960
Due after one year to five years	7,142
Due after five years to ten years	974
Due after ten years	16,396
Total	32,472	$ 13,264
Available-for-sale Securities, Amortized Cost:
Due within one year	0
Due after one year to five years	0
Due after five years to ten years	447
Due after ten years	1,852
Total	2,299
Available-for-sale Securities, Estimated Fair Value:
Due within one year	0
Due after one year to five years	0
Due after five years to ten years	434
Due after ten years	1,763
Total	$ 2,197
[1]	Derived from audited consolidated financial statements.

Goodwill and CDI - Goodwill (De

Goodwill and CDI - Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	[1]
Goodwill [Roll Forward]
Balance at the beginning of the period	$ 14,620	$ 5,650
Addition as a result of the South Sound Merger (see Note 2)	8,970
Balance at the end of the period	$ 14,620
[1]	Derived from audited consolidated financial statements.

Goodwill and CDI - CDI (Details

Goodwill and CDI - CDI (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Finite-lived Intangible Assets [Roll Forward]
Amortization	$ (109)	$ 0
Core Deposits
Finite-lived Intangible Assets [Roll Forward]
Balance at the beginning of the period	0
Addition as a result of the South Sound Merger (see Note 2)	2,483
Amortization	(109)
Balance at the end of the period	$ 2,374

Loans Receivable And Allowanc_3

Loans Receivable And Allowance For Loan Losses: Schedule of Loans receivable and Loans held for sale (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Sep. 30, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	$ 970,073	$ 820,795
Undisbursed portion of construction loans in process	100,595	83,237
Deferred loan origination fees, net	2,875	2,637
Allowance for loan losses	9,533	9,530
Less: Loans in process, Deferred fees and Allowance for loan losses	113,003	95,404
Loans receivable, net	$ 857,070	$ 725,391	[1]
Ratio of loan category to total loans receivable (percent)	100.00%	100.02239%
Total mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	$ 866,960	$ 736,886
Ratio of loan category to total loans receivable (percent)	89.30%	89.80%
Mortgage loans, one-to-four family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	$ 130,219	$ 115,941
Ratio of loan category to total loans receivable (percent)	13.40%	14.10%
Mortgage loans excluded	$ 2,988	$ 1,785
Mortgage loans, multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	$ 72,076	$ 61,928
Ratio of loan category to total loans receivable (percent)	7.40%	7.50%
Mortgage loans, commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	$ 426,144	$ 345,113
Ratio of loan category to total loans receivable (percent)	43.90%	42.00%
Mortgage loans, construction - custom and owner/builder
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	$ 119,214	$ 119,555
Ratio of loan category to total loans receivable (percent)	12.30%	14.60%
Mortgage loans, construction - speculative one-to-four family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	$ 17,934	$ 15,433
Ratio of loan category to total loans receivable (percent)	1.90%	1.90%
Mortgage loans, construction – commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	$ 42,416	$ 39,590
Ratio of loan category to total loans receivable (percent)	4.40%	4.80%
Mortgage loans, construction - Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	$ 25,645	$ 10,740
Ratio of loan category to total loans receivable (percent)	2.60%	1.30%
Mortgage loans, construction - Land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	$ 10,578	$ 3,040
Ratio of loan category to total loans receivable (percent)	1.10%	0.40%
Mortgage loans, land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	$ 22,734	$ 25,546
Ratio of loan category to total loans receivable (percent)	2.30%	3.10%
Total consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Consumer loans	$ 44,911	$ 40,856
Ratio of loan category to total loans receivable (percent)	4.70%	5.00%
Consumer loans, home equity and second mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Consumer loans	$ 40,468	$ 37,341
Ratio of loan category to total loans receivable (percent)	4.20%	4.50%
Consumer loans, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Consumer loans	$ 4,443	$ 3,515
Ratio of loan category to total loans receivable (percent)	0.50%	0.50%
Commercial business loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial business loans	$ 58,202	$ 43,053
Ratio of loan category to total loans receivable (percent)	6.00%	5.20%
Consumer loans excluded	$ 0	$ 0
[1]	Derived from audited consolidated financial statements.

Loans Receivable And Allowanc_4

Loans Receivable And Allowance For Loan Losses: Schedule of Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan losses, Beginning Allowance	$ 9,530	$ 9,553
Provision for (Recapture of) Loan Losses	0	0
Charge- offs	(2)	(1)
Recoveries	5	13
Allowance for loan losses, Ending Allowance	9,533	9,565
Mortgage loans, one-to-four family
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan losses, Beginning Allowance	1,086	1,082
Provision for (Recapture of) Loan Losses	73	43
Charge- offs	0	0
Recoveries	0	0
Allowance for loan losses, Ending Allowance	1,159	1,125
Mortgage loans, multi-family
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan losses, Beginning Allowance	433	447
Provision for (Recapture of) Loan Losses	16	(17)
Charge- offs	0	0
Recoveries	0	0
Allowance for loan losses, Ending Allowance	449	430
Mortgage loans, commercial
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan losses, Beginning Allowance	4,248	4,184
Provision for (Recapture of) Loan Losses	(9)	(91)
Charge- offs	0	0
Recoveries	0	0
Allowance for loan losses, Ending Allowance	4,239	4,093
Mortgage loans, construction - custom and owner/builder
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan losses, Beginning Allowance	671	699
Provision for (Recapture of) Loan Losses	(28)	89
Charge- offs	0	0
Recoveries	0	0
Allowance for loan losses, Ending Allowance	643	788
Mortgage loans, construction - speculative one-to-four family
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan losses, Beginning Allowance	178	128
Provision for (Recapture of) Loan Losses	28	(61)
Charge- offs	0	0
Recoveries	0	8
Allowance for loan losses, Ending Allowance	206	75
Mortgage loans, construction – commercial
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan losses, Beginning Allowance	563	303
Provision for (Recapture of) Loan Losses	(177)	93
Charge- offs	0	0
Recoveries	0	0
Allowance for loan losses, Ending Allowance	386	396
Mortgage loans, construction - Multi-family
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan losses, Beginning Allowance	135	173
Provision for (Recapture of) Loan Losses	74	55
Charge- offs	0	0
Recoveries	0	0
Allowance for loan losses, Ending Allowance	209	228
Mortgage loans, construction - Land development
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan losses, Beginning Allowance	49
Provision for (Recapture of) Loan Losses	94
Charge- offs	0
Recoveries	0
Allowance for loan losses, Ending Allowance	143
Mortgage loans, land
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan losses, Beginning Allowance	844	918
Provision for (Recapture of) Loan Losses	(91)	(142)
Charge- offs	0	0
Recoveries	4	4
Allowance for loan losses, Ending Allowance	757	780
Consumer loans, home equity and second mortgage
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan losses, Beginning Allowance	649	983
Provision for (Recapture of) Loan Losses	17	(25)
Charge- offs	0	0
Recoveries	0	0
Allowance for loan losses, Ending Allowance	666	958
Consumer loans, other
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan losses, Beginning Allowance	117	121
Provision for (Recapture of) Loan Losses	(15)	8
Charge- offs	(2)	(1)
Recoveries	1	1
Allowance for loan losses, Ending Allowance	101	129
Commercial business loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan losses, Beginning Allowance	557	515
Provision for (Recapture of) Loan Losses	18	48
Charge- offs	0	0
Recoveries	0	0
Allowance for loan losses, Ending Allowance	$ 575	$ 563

Loans Receivable And Allowanc_5

Loans Receivable And Allowance For Loan Losses: Schedule of loans evaluated individually for impairment and collectively evaluated for impairment in the allowance for loan losses (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	$ 137	$ 97
Allowance for Loan Losses, Collectively Evaluated for Impairment	9,396	9,433
Allowance for Loan Losses, Total	9,533	9,530	$ 9,565	$ 9,553
Recorded Investment in Loans, Individually Evaluated for Impairment	4,531	4,272
Recorded Investment in Loans, Collectively Evaluated for Impairment	864,947	733,286
Loans receivable	869,478	737,558
Mortgage loans, one-to-four family
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	0	0
Allowance for Loan Losses, Collectively Evaluated for Impairment	1,159	1,086
Allowance for Loan Losses, Total	1,159	1,086	1,125	1,082
Recorded Investment in Loans, Individually Evaluated for Impairment	1,014	1,054
Recorded Investment in Loans, Collectively Evaluated for Impairment	129,205	114,887
Loans receivable	130,219	115,941
Mortgage loans, multi-family
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	0	0
Allowance for Loan Losses, Collectively Evaluated for Impairment	449	433
Allowance for Loan Losses, Total	449	433	430	447
Recorded Investment in Loans, Individually Evaluated for Impairment	0	0
Recorded Investment in Loans, Collectively Evaluated for Impairment	72,076	61,928
Loans receivable	72,076	61,928
Mortgage loans, commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	0	0
Allowance for Loan Losses, Collectively Evaluated for Impairment	4,239	4,248
Allowance for Loan Losses, Total	4,239	4,248	4,093	4,184
Recorded Investment in Loans, Individually Evaluated for Impairment	2,436	2,446
Recorded Investment in Loans, Collectively Evaluated for Impairment	423,708	342,667
Loans receivable	426,144	345,113
Mortgage loans, construction - custom and owner/builder
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	0	0
Allowance for Loan Losses, Collectively Evaluated for Impairment	643	671
Allowance for Loan Losses, Total	643	671	788	699
Recorded Investment in Loans, Individually Evaluated for Impairment	0	0
Recorded Investment in Loans, Collectively Evaluated for Impairment	64,313	67,024
Loans receivable	64,313	67,024
Mortgage loans, construction - speculative one-to-four family
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	0	0
Allowance for Loan Losses, Collectively Evaluated for Impairment	206	178
Allowance for Loan Losses, Total	206	178	75	128
Recorded Investment in Loans, Individually Evaluated for Impairment	0	0
Recorded Investment in Loans, Collectively Evaluated for Impairment	9,221	7,107
Loans receivable	9,221	7,107
Mortgage loans, construction – commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	0	0
Allowance for Loan Losses, Collectively Evaluated for Impairment	386	563
Allowance for Loan Losses, Total	386	563	396	303
Recorded Investment in Loans, Individually Evaluated for Impairment	0	0
Recorded Investment in Loans, Collectively Evaluated for Impairment	25,883	23,440
Loans receivable	25,883	23,440
Mortgage loans, construction - Multi-family
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	0	0
Allowance for Loan Losses, Collectively Evaluated for Impairment	209	135
Allowance for Loan Losses, Total	209	135	228	173
Recorded Investment in Loans, Individually Evaluated for Impairment	0	0
Recorded Investment in Loans, Collectively Evaluated for Impairment	9,333	5,983
Loans receivable	9,333	5,983
Mortgage loans, construction - Land development
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	0	0
Allowance for Loan Losses, Collectively Evaluated for Impairment	143	49
Allowance for Loan Losses, Total	143	49
Recorded Investment in Loans, Individually Evaluated for Impairment	0	0
Recorded Investment in Loans, Collectively Evaluated for Impairment	6,442	1,567
Loans receivable	6,442	1,567
Mortgage loans, land
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	79	34
Allowance for Loan Losses, Collectively Evaluated for Impairment	678	810
Allowance for Loan Losses, Total	757	844	780	918
Recorded Investment in Loans, Individually Evaluated for Impairment	396	243
Recorded Investment in Loans, Collectively Evaluated for Impairment	22,338	25,303
Loans receivable	22,734	25,546
Consumer loans, home equity and second mortgage
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	0	0
Allowance for Loan Losses, Collectively Evaluated for Impairment	666	649
Allowance for Loan Losses, Total	666	649	958	983
Recorded Investment in Loans, Individually Evaluated for Impairment	386	359
Recorded Investment in Loans, Collectively Evaluated for Impairment	40,082	36,982
Loans receivable	40,468	37,341
Consumer loans, other
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	0	0
Allowance for Loan Losses, Collectively Evaluated for Impairment	101	117
Allowance for Loan Losses, Total	101	117	129	121
Recorded Investment in Loans, Individually Evaluated for Impairment	0	0
Recorded Investment in Loans, Collectively Evaluated for Impairment	4,443	3,515
Loans receivable	4,443	3,515
Commercial business loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	58	63
Allowance for Loan Losses, Collectively Evaluated for Impairment	517	494
Allowance for Loan Losses, Total	575	557	$ 563	$ 515
Recorded Investment in Loans, Individually Evaluated for Impairment	299	170
Recorded Investment in Loans, Collectively Evaluated for Impairment	57,903	42,883
Loans receivable	$ 58,202	$ 43,053

Loans Receivable And Allowanc_6

Loans Receivable And Allowance For Loan Losses: Past Due Status of Loans (Details) - USD ($) $ in Thousands		Dec. 31, 2018	Sep. 30, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		$ 3,256	$ 2,556
Loans receivable, Non-Accrual	[1]	1,590	1,317
Loans receivable, Current		866,222	735,002
Loans receivable		869,478	737,558
Mortgage loans, one-to-four family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		509	1,102
Loans receivable, Non-Accrual	[1]	509	545
Loans receivable, Current		129,710	114,839
Loans receivable		130,219	115,941
Mortgage loans, multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
Loans receivable, Non-Accrual	[1]	0	0
Loans receivable, Current		72,076	61,928
Loans receivable		72,076	61,928
Mortgage loans, commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		1,093	574
Loans receivable, Non-Accrual	[1]	0	0
Loans receivable, Current		425,051	344,539
Loans receivable		426,144	345,113
Mortgage loans, construction - custom and owner/builder
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
Loans receivable, Non-Accrual	[1]	0	0
Loans receivable, Current		64,313	67,024
Loans receivable		64,313	67,024
Mortgage loans, construction - speculative one-to-four family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
Loans receivable, Non-Accrual	[1]	0	0
Loans receivable, Current		9,221	7,107
Loans receivable		9,221	7,107
Mortgage loans, construction – commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
Loans receivable, Non-Accrual	[1]	0	0
Loans receivable, Current		25,883	23,440
Loans receivable		25,883	23,440
Mortgage loans, construction - Multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
Loans receivable, Non-Accrual	[1]	0	0
Loans receivable, Current		9,333	5,983
Loans receivable		9,333	5,983
Mortgage loans, construction - Land development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		228	0
Loans receivable, Non-Accrual	[1]	0	0
Loans receivable, Current		6,214	1,567
Loans receivable		6,442	1,567
Mortgage loans, land
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		504	283
Loans receivable, Non-Accrual	[1]	396	243
Loans receivable, Current		22,230	25,263
Loans receivable		22,734	25,546
Consumer loans, home equity and second mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		423	401
Loans receivable, Non-Accrual	[1]	386	359
Loans receivable, Current		40,045	36,940
Loans receivable		40,468	37,341
Consumer loans, other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		26	26
Loans receivable, Non-Accrual	[1]	0	0
Loans receivable, Current		4,417	3,489
Loans receivable		4,443	3,515
Commercial business loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		473	170
Loans receivable, Non-Accrual	[1]	299	170
Loans receivable, Current		57,729	42,883
Loans receivable		58,202	43,053
30 to 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		729	1,223
30 to 59 Days Past Due | Mortgage loans, one-to-four family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	557
30 to 59 Days Past Due | Mortgage loans, multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
30 to 59 Days Past Due | Mortgage loans, commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		317	574
30 to 59 Days Past Due | Mortgage loans, construction - custom and owner/builder
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
30 to 59 Days Past Due | Mortgage loans, construction - speculative one-to-four family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
30 to 59 Days Past Due | Mortgage loans, construction – commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
30 to 59 Days Past Due | Mortgage loans, construction - Multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
30 to 59 Days Past Due | Mortgage loans, construction - Land development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		228	0
30 to 59 Days Past Due | Mortgage loans, land
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	40
30 to 59 Days Past Due | Consumer loans, home equity and second mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	42
30 to 59 Days Past Due | Consumer loans, other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		10	10
30 to 59 Days Past Due | Commercial business loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		174	0
60 to 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		937	16
60 to 89 Days Past Due | Mortgage loans, one-to-four family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
60 to 89 Days Past Due | Mortgage loans, multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
60 to 89 Days Past Due | Mortgage loans, commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		776	0
60 to 89 Days Past Due | Mortgage loans, construction - custom and owner/builder
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
60 to 89 Days Past Due | Mortgage loans, construction - speculative one-to-four family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
60 to 89 Days Past Due | Mortgage loans, construction – commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
60 to 89 Days Past Due | Mortgage loans, construction - Multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
60 to 89 Days Past Due | Mortgage loans, construction - Land development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
60 to 89 Days Past Due | Mortgage loans, land
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		108	0
60 to 89 Days Past Due | Consumer loans, home equity and second mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		37	0
60 to 89 Days Past Due | Consumer loans, other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		16	16
60 to 89 Days Past Due | Commercial business loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
Past Due 90 Days or More and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
Past Due 90 Days or More and Still Accruing | Mortgage loans, one-to-four family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
Past Due 90 Days or More and Still Accruing | Mortgage loans, multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
Past Due 90 Days or More and Still Accruing | Mortgage loans, commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
Past Due 90 Days or More and Still Accruing | Mortgage loans, construction - custom and owner/builder
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
Past Due 90 Days or More and Still Accruing | Mortgage loans, construction - speculative one-to-four family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
Past Due 90 Days or More and Still Accruing | Mortgage loans, construction – commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
Past Due 90 Days or More and Still Accruing | Mortgage loans, construction - Multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
Past Due 90 Days or More and Still Accruing | Mortgage loans, construction - Land development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
Past Due 90 Days or More and Still Accruing | Mortgage loans, land
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
Past Due 90 Days or More and Still Accruing | Consumer loans, home equity and second mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
Past Due 90 Days or More and Still Accruing | Consumer loans, other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
Past Due 90 Days or More and Still Accruing | Commercial business loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		$ 0	$ 0
[1]	Includes non-accrual loans past due 90 days or more and other loans classified as non-accrual.

Loans Receivable And Allowanc_7

Loans Receivable And Allowance For Loan Losses: Financing Receivable Credit Quality Indicators (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Sep. 30, 2018
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	$ 869,478	$ 737,558
Mortgage loans, one-to-four family
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	130,219	115,941
Mortgage loans, multi-family
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	72,076	61,928
Mortgage loans, commercial
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	426,144	345,113
Mortgage loans, construction - custom and owner/builder
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	64,313	67,024
Mortgage loans, construction - speculative one-to-four family
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	9,221	7,107
Mortgage loans, construction – commercial
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	25,883	23,440
Mortgage loans, construction - Multi-family
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	9,333	5,983
Mortgage loans, construction - Land development
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	6,442	1,567
Mortgage loans, land
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	22,734	25,546
Consumer loans, home equity and second mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	40,468	37,341
Consumer loans, other
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	4,443	3,515
Commercial business loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	58,202	43,053
Pass
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	852,556	720,600
Pass | Mortgage loans, one-to-four family
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	127,116	113,148
Pass | Mortgage loans, multi-family
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	72,076	61,928
Pass | Mortgage loans, commercial
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	416,329	334,908
Pass | Mortgage loans, construction - custom and owner/builder
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	64,094	66,720
Pass | Mortgage loans, construction - speculative one-to-four family
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	9,221	7,107
Pass | Mortgage loans, construction – commercial
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	25,883	23,440
Pass | Mortgage loans, construction - Multi-family
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	9,333	5,983
Pass | Mortgage loans, construction - Land development
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	6,442	1,567
Pass | Mortgage loans, land
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	20,116	22,810
Pass | Consumer loans, home equity and second mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	39,802	36,697
Pass | Consumer loans, other
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	4,409	3,480
Pass | Commercial business loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	57,735	42,812
Watch
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	10,472	10,653
Watch | Mortgage loans, one-to-four family
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	707	882
Watch | Mortgage loans, multi-family
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Watch | Mortgage loans, commercial
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	8,332	8,375
Watch | Mortgage loans, construction - custom and owner/builder
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	219	304
Watch | Mortgage loans, construction - speculative one-to-four family
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Watch | Mortgage loans, construction – commercial
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Watch | Mortgage loans, construction - Multi-family
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Watch | Mortgage loans, construction - Land development
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Watch | Mortgage loans, land
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	979	988
Watch | Consumer loans, home equity and second mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	82	82
Watch | Consumer loans, other
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	34	0
Watch | Commercial business loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	119	22
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	2,515	3,123
Special Mention | Mortgage loans, one-to-four family
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	574	581
Special Mention | Mortgage loans, multi-family
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Special Mention | Mortgage loans, commercial
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	649	988
Special Mention | Mortgage loans, construction - custom and owner/builder
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Special Mention | Mortgage loans, construction - speculative one-to-four family
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Special Mention | Mortgage loans, construction – commercial
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Special Mention | Mortgage loans, construction - Multi-family
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Special Mention | Mortgage loans, construction - Land development
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Special Mention | Mortgage loans, land
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	1,243	1,505
Special Mention | Consumer loans, home equity and second mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Special Mention | Consumer loans, other
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Special Mention | Commercial business loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	49	49
Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	3,935	3,182
Substandard | Mortgage loans, one-to-four family
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	1,822	1,330
Substandard | Mortgage loans, multi-family
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Substandard | Mortgage loans, commercial
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	834	842
Substandard | Mortgage loans, construction - custom and owner/builder
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Substandard | Mortgage loans, construction - speculative one-to-four family
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Substandard | Mortgage loans, construction – commercial
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Substandard | Mortgage loans, construction - Multi-family
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Substandard | Mortgage loans, construction - Land development
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	0
Substandard | Mortgage loans, land
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	396	243
Substandard | Consumer loans, home equity and second mortgage
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	584	562
Substandard | Consumer loans, other
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	0	35
Substandard | Commercial business loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	$ 299	$ 170

Loans Receivable And Allowanc_8

Loans Receivable And Allowance For Loan Losses: Impaired Financing Receivables (Details) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
		Dec. 31, 2018	Sep. 30, 2018
Recorded Investment
With no related allowance recorded		$ 3,950	$ 3,949
With an allowance recorded		581	323
Total:		4,531	4,272
Unpaid Principal Balance (Loan Balance Plus Charge Off)
With no related allowance recorded		4,175	4,200
With an allowance recorded		581	323
Total:		4,756	4,523
Related Allowance		137	97
Average Recorded Investment
With no related allowance recorded		3,950	4,304	[1]
With an allowance recorded		453	1,603	[1]
Total		4,403	5,907	[1]
Interest Income Recognized
With no related allowance recorded		58	215	[1]
With an allowance recorded		0	53	[1]
Total		58	268	[1]
Cash Basis Interest Income Recognized
With no related allowance recorded		47	175	[1]
With an allowance recorded		0	42	[1]
Total		47	217	[1]
Mortgage loans, one-to-four family
Recorded Investment
With no related allowance recorded		1,014	1,054
With an allowance recorded			0
Total:		1,014	1,054
Unpaid Principal Balance (Loan Balance Plus Charge Off)
With no related allowance recorded		1,161	1,200
With an allowance recorded			0
Total:		1,161	1,200
Related Allowance		0	0
Average Recorded Investment
With no related allowance recorded		1,034	1,422	[1]
With an allowance recorded	[1]		9
Total		1,034	1,431	[1]
Interest Income Recognized
With no related allowance recorded		18	80	[1]
With an allowance recorded	[1]		0
Total		18	80	[1]
Cash Basis Interest Income Recognized
With no related allowance recorded		16	69	[1]
With an allowance recorded	[1]		0
Total		16	69	[1]
Mortgage loans, commercial
Recorded Investment
With no related allowance recorded		2,436	2,446
With an allowance recorded			0
Total:		2,436	2,446
Unpaid Principal Balance (Loan Balance Plus Charge Off)
With no related allowance recorded		2,436	2,446
With an allowance recorded			0
Total:		2,436	2,446
Related Allowance		0	0
Average Recorded Investment
With no related allowance recorded		2,441	2,389	[1]
With an allowance recorded	[1]		760
Total		2,441	3,149	[1]
Interest Income Recognized
With no related allowance recorded		40	121	[1]
With an allowance recorded	[1]		28
Total		40	149	[1]
Cash Basis Interest Income Recognized
With no related allowance recorded		31	93	[1]
With an allowance recorded	[1]		21
Total		31	114	[1]
Mortgage loans, land
Recorded Investment
With no related allowance recorded		0	90
With an allowance recorded		396	153
Total:		396	243
Unpaid Principal Balance (Loan Balance Plus Charge Off)
With no related allowance recorded		78	195
With an allowance recorded		396	153
Total:		474	348
Related Allowance		79	34
Average Recorded Investment
With no related allowance recorded		45	283	[1]
With an allowance recorded		198	383	[1]
Total		243	666	[1]
Interest Income Recognized
With no related allowance recorded		0	11	[1]
With an allowance recorded		0	9	[1]
Total		0	20	[1]
Cash Basis Interest Income Recognized
With no related allowance recorded		0	10	[1]
With an allowance recorded		0	8	[1]
Total		0	18	[1]
Consumer loans, home equity and second mortgage
Recorded Investment
With no related allowance recorded		386	359
With an allowance recorded		0	0
Total:		386	359
Unpaid Principal Balance (Loan Balance Plus Charge Off)
With no related allowance recorded		386	359
With an allowance recorded		0	0
Total:		386	359
Related Allowance		0	0
Average Recorded Investment
With no related allowance recorded		373	210	[1]
With an allowance recorded		77	310	[1]
Total		450	520	[1]
Interest Income Recognized
With no related allowance recorded		0	3	[1]
With an allowance recorded		0	16	[1]
Total		0	19	[1]
Cash Basis Interest Income Recognized
With no related allowance recorded		0	3	[1]
With an allowance recorded		0	13	[1]
Total		0	16	[1]
Consumer loans, other
Recorded Investment
With an allowance recorded			170
Unpaid Principal Balance (Loan Balance Plus Charge Off)
With an allowance recorded			170
Related Allowance			63
Average Recorded Investment
With an allowance recorded	[1]		141
Interest Income Recognized
With an allowance recorded	[1]		0
Cash Basis Interest Income Recognized
With an allowance recorded	[1]		0
Commercial business loans
Recorded Investment
With no related allowance recorded		114
With an allowance recorded		185
Total:		299	170
Unpaid Principal Balance (Loan Balance Plus Charge Off)
With no related allowance recorded		114
With an allowance recorded		185
Total:		299	170
Related Allowance		58	63
Average Recorded Investment
With no related allowance recorded		57
With an allowance recorded		178
Total		235	141	[1]
Interest Income Recognized
With no related allowance recorded		0
With an allowance recorded		0
Total		0	0	[1]
Cash Basis Interest Income Recognized
With no related allowance recorded		0
With an allowance recorded		0
Total		$ 0	$ 0	[1]
[1]	For the year ended September 30, 2018.

Loans Receivable And Allowanc_9

Loans Receivable And Allowance For Loan Losses: Schedule 1 of Troubled debt restructured loans (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Sep. 30, 2018
Financing Receivable, Modifications [Line Items]
Troubled debt restructured loan	$ 3,249	$ 3,278
Accruing
Financing Receivable, Modifications [Line Items]
Troubled debt restructured loan	2,941	2,955
Non-Accrual
Financing Receivable, Modifications [Line Items]
Troubled debt restructured loan	308	323
Mortgage loans, one-to-four family
Financing Receivable, Modifications [Line Items]
Troubled debt restructured loan	651	509
Mortgage loans, one-to-four family | Accruing
Financing Receivable, Modifications [Line Items]
Troubled debt restructured loan	505	509
Mortgage loans, one-to-four family | Non-Accrual
Financing Receivable, Modifications [Line Items]
Troubled debt restructured loan	146	0
Mortgage loans, commercial
Financing Receivable, Modifications [Line Items]
Troubled debt restructured loan	2,436	2,446
Mortgage loans, commercial | Accruing
Financing Receivable, Modifications [Line Items]
Troubled debt restructured loan	2,436	2,446
Mortgage loans, commercial | Non-Accrual
Financing Receivable, Modifications [Line Items]
Troubled debt restructured loan	0	0
Mortgage loans, land
Financing Receivable, Modifications [Line Items]
Troubled debt restructured loan		153
Mortgage loans, land | Accruing
Financing Receivable, Modifications [Line Items]
Troubled debt restructured loan		0
Mortgage loans, land | Non-Accrual
Financing Receivable, Modifications [Line Items]
Troubled debt restructured loan		153
Commercial business loans
Financing Receivable, Modifications [Line Items]
Troubled debt restructured loan	162	170
Commercial business loans | Accruing
Financing Receivable, Modifications [Line Items]
Troubled debt restructured loan	0	0
Commercial business loans | Non-Accrual
Financing Receivable, Modifications [Line Items]
Troubled debt restructured loan	$ 162	$ 170

Loans Receivable And Allowan_10

Loans Receivable And Allowance For Loan Losses - Narrative (Details) - USD ($)	Dec. 31, 2018	Sep. 30, 2018
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Troubled debt restructured loan	$ 3,249,000	$ 3,278,000
Loans and leases receivable, impaired, commitment to lend	0	0
Allowance for loan losses allocated to TDR loans	$ 84,000	$ 97,000

Loans Receivable And Allowan_11

Loans Receivable And Allowance For Loan Losses - Land and Commercial Business Loans (Details) $ in Thousands	12 Months Ended
	Sep. 30, 2018USD ($)contract	Dec. 31, 2018USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 3,278	$ 3,249
Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	3
Pre-modification TDR balance	$ 427
Post-modification TDR balance	338
Financing Receivable, Modifications, Recorded Investment	323
Commercial business loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 170	$ 162
Commercial business loans | Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	2
Pre-modification TDR balance	$ 183
Post-modification TDR balance	183
Financing Receivable, Modifications, Recorded Investment	170
Mortgage loans, land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 153
Mortgage loans, land | Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	1
Pre-modification TDR balance	$ 244
Post-modification TDR balance	155
Financing Receivable, Modifications, Recorded Investment	$ 153

Net Income Per Common Share (De

Net Income Per Common Share (Details) - shares	Dec. 31, 2018	Dec. 31, 2017
Earnings Per Share [Abstract]
ESOP, number of suspense shares (in shares)	14,027	51,105

Net Income Per Common Share_ Sc

Net Income Per Common Share: Schedule of Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
		Dec. 31, 2018	Dec. 31, 2017
Earnings Per Share, Basic [Abstract]
Numerator – net income		$ 5,615	$ 3,614
Denominator – weighted average common shares outstanding (in shares)		8,293,212	7,312,531
Basic net income per common share (in dollars per share)		$ 0.68	$ 0.49
Earnings Per Share, Diluted [Abstract]
Effect of dilutive stock options (in shares)	[1]	164,491	195,638
Weighted average common shares and common stock equivalents (in shares)		8,457,703	7,508,169
Diluted net income per common share (in dollars per share)		$ 0.66	$ 0.48
Stock Options
Earnings Per Share, Diluted [Abstract]
Antidilutive securities excluded from computation of earnings per share (in shares)		102,850	14,651
[1]	For the three months ended December 31, 2017, average options to purchase 14,651 shares of common stock were outstanding but not included in the computation of diluted net income per share because their effect would have been anti-dilutive.

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands		3 Months Ended
		Dec. 31, 2018		Dec. 31, 2017	Oct. 01, 2018
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period		$ 124,657	[1]	$ 111,000
Balance at end of period		156,905		114,112
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	[2]	(129)		(124)
Other comprehensive loss	[2]	(79)		(12)
Balance at end of period	[2]	(145)		(136)
Accumulated Net Unrealized Investment Gain (Loss) | Available-for-sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	[2]	(58)		(19)
Other comprehensive loss	[2]	(86)		(7)
Balance at end of period	[2]	(81)		(26)
Accumulated Net Unrealized Investment Gain (Loss) | Held-to-maturity Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	[2]	(71)		(105)
Other comprehensive loss	[2]	7		(5)
Balance at end of period	[2]	$ (64)		$ (110)
Accounting Standards Update 2016-01
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Adoption of ASU 2016-01					$ 0
Accounting Standards Update 2016-01 | Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Adoption of ASU 2016-01					63
Accounting Standards Update 2016-01 | Accumulated Net Unrealized Investment Gain (Loss) | Available-for-sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Adoption of ASU 2016-01					63
Accounting Standards Update 2016-01 | Accumulated Net Unrealized Investment Gain (Loss) | Held-to-maturity Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Adoption of ASU 2016-01					$ 0
[1]	Derived from audited consolidated financial statements.
[2]	All amounts are net of income taxes.

Stock Compensation Plans (Detai

Stock Compensation Plans (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Jan. 27, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options, outstanding, aggregate intrinsic value	$ 3,130	$ 4,890
Number of unvested stock options (shares)	174,850	203,250
Unvested stock options, aggregate grant date fair value	$ 527	$ 499
Unvested stock options, aggregate intrinsic value	$ 820
Stock options vested during period (shares)	18,200	29,500
Stock options vested during period, aggregate grant date fair value	$ 164	$ 75
Aggregate intrinsic value of options exercised during the period	142	$ 124
Unrecognized compensation expense, non-vested options	$ 477
Unrecognized compensation expense, non-vested options, amortization period (in years)	2 years 4 months 2 days
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized	300,000
Award vesting percentage	20.00%
Award vesting period (years)	5 years
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contractual term	10 years
Number of unvested shares	0	0
Equity Incentive Plan 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized			352,366
Number of shares available for grant	75,116
MRDP | Stock Grant Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock grants awarded (shares)	0	0

Stock Compensation Plans_ Discl

Stock Compensation Plans: Disclosure of Share-based Compensation Arrangements by Share-based Payment Award (Details) - $ / shares	3 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Shares:
Options outstanding, beginning of period (shares)	380,820	380,120
Exercised (shares)	(7,400)	(6,250)
Forfeited (shares)	(3,700)	(4,300)
Options outstanding, end of period (shares)	369,720	369,570
Weighted Average Exercise Price (in dollars per share):
Options outstanding, beginning of period (dollars per share)	$ 16.03	$ 13.23
Exercised (dollars per share)	9.55	9.65
Forfeited (dollars per share)	18.03	11.66
Options outstanding, end of period (dollars per share)	$ 16.14	$ 13.31

Stock Compensation Plans_ Stock

Stock Compensation Plans: Stock Options by Exercise Price (Details) - Stock Options shares in Thousands	3 Months Ended
	Dec. 31, 2018$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Number (shares) | shares	369,720
Options Outstanding, Weighed Average Exercise Price (dollars per share)	$ 16.14
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	6 years 9 months 21 days
Options Exercisable, Number (shares) | shares	194,870
Options Exercisable, Weighted Average Exercise Price (dollars per share)	$ 10.90
Options Exercisable, Weighted Average Remaining Contractual Life (Years)	5 years 7 months 18 days
$4.01 - $4.55
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Number (shares) | shares	2,500
Options Outstanding, Weighed Average Exercise Price (dollars per share)	$ 4.33
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	1 year 8 months
Options Exercisable, Number (shares) | shares	2,500
Options Exercisable, Weighted Average Exercise Price (dollars per share)	$ 4.33
Options Exercisable, Weighted Average Remaining Contractual Life (Years)	1 year 8 months
Weighted Average Exercise Price, minimum (dollars per share)	$ 4.01
Weighted Average Exercise Price, maximum (dollars per share)	$ 4.55
$5.86 - $6.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Number (shares) | shares	27,850
Options Outstanding, Weighed Average Exercise Price (dollars per share)	$ 5.96
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	3 years 9 months 21 days
Options Exercisable, Number (shares) | shares	27,850
Options Exercisable, Weighted Average Exercise Price (dollars per share)	$ 5.96
Options Exercisable, Weighted Average Remaining Contractual Life (Years)	3 years 9 months 21 days
Weighted Average Exercise Price, minimum (dollars per share)	$ 5.86
Weighted Average Exercise Price, maximum (dollars per share)	$ 6
$ 9
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Number (shares) | shares	68,000
Options Outstanding, Weighed Average Exercise Price (dollars per share)	$ 9
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	4 years 9 months 30 days
Options Exercisable, Number (shares) | shares	68,000
Options Exercisable, Weighted Average Exercise Price (dollars per share)	$ 9
Options Exercisable, Weighted Average Remaining Contractual Life (Years)	4 years 9 months 30 days
Weighted Average Exercise Price, minimum (dollars per share)	$ 9
$10.26 - $10.71
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Number (shares) | shares	118,420
Options Outstanding, Weighed Average Exercise Price (dollars per share)	$ 10.57
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	6 years 3 months 15 days
Options Exercisable, Number (shares) | shares	66,120
Options Exercisable, Weighted Average Exercise Price (dollars per share)	$ 10.56
Options Exercisable, Weighted Average Remaining Contractual Life (Years)	6 years 2 months 21 days
Weighted Average Exercise Price, minimum (dollars per share)	$ 10.26
Weighted Average Exercise Price, maximum (dollars per share)	$ 10.71
$ 15.67
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Number (shares) | shares	50,700
Options Outstanding, Weighed Average Exercise Price (dollars per share)	$ 15.67
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	7 years 9 months
Options Exercisable, Number (shares) | shares	18,900
Options Exercisable, Weighted Average Exercise Price (dollars per share)	$ 15.67
Options Exercisable, Weighted Average Remaining Contractual Life (Years)	7 years 9 months
Weighted Average Exercise Price, minimum (dollars per share)	$ 15.67
$ 29.69
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Number (shares) | shares	56,300
Options Outstanding, Weighed Average Exercise Price (dollars per share)	$ 29.69
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	8 years 9 months
Options Exercisable, Number (shares) | shares	11,500
Options Exercisable, Weighted Average Exercise Price (dollars per share)	$ 29.69
Options Exercisable, Weighted Average Remaining Contractual Life (Years)	8 years 9 months
Weighted Average Exercise Price, minimum (dollars per share)	$ 29.69
$ 31.80
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Number (shares) | shares	45,950
Options Outstanding, Weighed Average Exercise Price (dollars per share)	$ 31.80
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	9 years 9 months
Options Exercisable, Number (shares) | shares	0
Weighted Average Exercise Price, minimum (dollars per share)	$ 31.80

Fair Value Measurements_ Balanc

Fair Value Measurements: Balances of assets and liabilities measured at estimated fair value on a recurring basis (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Sep. 30, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities, estimated fair value	$ 3,122	$ 1,154
MBS: U.S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities, estimated fair value	2,197	237
Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities, estimated fair value	925	917
Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities, estimated fair value	2,197	237
Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities, estimated fair value	0	0
Recurring | MBS: U.S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities, estimated fair value	2,197	237
Recurring | Mutual funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities, estimated fair value	925	917
Recurring | Fair Value, Inputs, Level 1 | MBS: U.S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities, estimated fair value	0	0
Recurring | Fair Value, Inputs, Level 1 | Mutual funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities, estimated fair value	925	917
Recurring | Fair Value, Inputs, Level 2 | MBS: U.S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities, estimated fair value	2,197	237
Recurring | Fair Value, Inputs, Level 2 | Mutual funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities, estimated fair value	0	0
Recurring | Fair Value, Inputs, Level 3 | MBS: U.S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities, estimated fair value	0	0
Recurring | Fair Value, Inputs, Level 3 | Mutual funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities, estimated fair value	$ 0	$ 0

Fair Value Measurements_ Bala_2

Fair Value Measurements: Balances of assets measured at estimated fair value on a non-recurring basis, and total losses resulting from estimated fair value adjustments (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Sep. 30, 2018
Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, estimated fair value, nonrecurring	$ 0	$ 0
Fair Value, Inputs, Level 1 | Mortgage loans, land
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, estimated fair value, nonrecurring	0	0
Fair Value, Inputs, Level 1 | Commercial business loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, estimated fair value, nonrecurring	0	0
Fair Value, Inputs, Level 1 | Total impaired loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, estimated fair value, nonrecurring	0	0
Fair Value, Inputs, Level 1 | Private label residential
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, estimated fair value, nonrecurring	0	0
Fair Value, Inputs, Level 1 | OREO and other repossessed items
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, estimated fair value, nonrecurring	0	0
Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, estimated fair value, nonrecurring	7	3
Fair Value, Inputs, Level 2 | Mortgage loans, land
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, estimated fair value, nonrecurring	0	0
Fair Value, Inputs, Level 2 | Commercial business loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, estimated fair value, nonrecurring	0	0
Fair Value, Inputs, Level 2 | Total impaired loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, estimated fair value, nonrecurring	0	0
Fair Value, Inputs, Level 2 | Private label residential
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, estimated fair value, nonrecurring	7	3
Fair Value, Inputs, Level 2 | OREO and other repossessed items
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, estimated fair value, nonrecurring	0	0
Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, estimated fair value, nonrecurring	2,470	2,139
Fair Value, Inputs, Level 3 | Mortgage loans, land
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, estimated fair value, nonrecurring	317	119
Fair Value, Inputs, Level 3 | Commercial business loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, estimated fair value, nonrecurring	127	107
Fair Value, Inputs, Level 3 | Total impaired loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, estimated fair value, nonrecurring	444	226
Fair Value, Inputs, Level 3 | Private label residential
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, estimated fair value, nonrecurring	0	0
Fair Value, Inputs, Level 3 | OREO and other repossessed items
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, estimated fair value, nonrecurring	$ 2,026	$ 1,913

Fair Value Measurements_ Fair V

Fair Value Measurements: Fair Value Measurements, Nonrecurring, Valuation Techniques (Details) - Fair Value, Inputs, Level 3 - USD ($) $ in Thousands	Dec. 31, 2018	Sep. 30, 2018
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, estimated fair value, nonrecurring	$ 2,470	$ 2,139
Impaired loans
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, estimated fair value, nonrecurring	444	226
Nonrecurring | Impaired loans | Market Approach Valuation Technique
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, estimated fair value, nonrecurring	444	226
Nonrecurring | OREO and other repossessed assets | Market Approach Valuation Technique
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, estimated fair value, nonrecurring	$ 2,026	$ 1,913

Fair Value Measurements_ Schedu

Fair Value Measurements: Schedule of estimated fair values of financial instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Sep. 30, 2018
Fair value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other investments, at cost	$ 3,000	$ 3,000	[1]
Recorded Amount
Fair value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	161,743	148,864
CDs held for investment	65,830	63,290
Investment securities	35,072	13,964
FHLB stock	1,395	1,190
Other investments, at cost	3,000	3,000
Loans held for sale	2,988	1,785
Loans receivable, net	857,070	725,391
Accrued interest receivable	3,497	2,877
Time deposits	154,773	141,808
Accrued interest payable	295	225
Fair Value
Fair value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	161,743	148,864
CDs held for investment	65,830	63,290
Investment securities	35,594	14,418
FHLB stock	1,395	1,190
Other investments, at cost	3,000	3,000
Loans held for sale	3,044	1,814
Loans receivable, net	843,968	711,071
Accrued interest receivable	3,497	2,877
Time deposits	153,836	140,831
Accrued interest payable	295	225
Fair Value | Fair Value, Inputs, Level 1
Fair value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	161,743	148,864
CDs held for investment	65,830	63,290
Investment securities	8,844	8,812
FHLB stock	1,395	1,190
Other investments, at cost	3,000	3,000
Loans held for sale	3,044	1,814
Loans receivable, net	0	0
Accrued interest receivable	3,497	2,877
Time deposits	0	0
Accrued interest payable	295	225
Fair Value | Fair Value, Inputs, Level 2
Fair value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	0	0
CDs held for investment	0	0
Investment securities	26,750	5,606
FHLB stock	0	0
Other investments, at cost	0	0
Loans held for sale	0	0
Loans receivable, net	0	0
Accrued interest receivable	0	0
Time deposits	0	0
Accrued interest payable	0	0
Fair Value | Fair Value, Inputs, Level 3
Fair value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	0	0
CDs held for investment	0	0
Investment securities	0	0
FHLB stock	0	0
Other investments, at cost	0	0
Loans held for sale	0	0
Loans receivable, net	843,968	711,071
Accrued interest receivable	0	0
Time deposits	153,836	140,831
Accrued interest payable	$ 0	$ 0
[1]	Derived from audited consolidated financial statements.

U.S. Tax Reform (Details)

U.S. Tax Reform (Details) - USD ($)	3 Months Ended		12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Sep. 30, 2018
Investments, Owned, Federal Income Tax Note [Line Items]
Effective Income Tax Rate			24.50%
Income tax expense	$ 1,433,000	$ 1,781,000
Change in tax rate, deferred tax asset, income tax expense (benefit)	$ 551,000
Deferred Tax Asset
Investments, Owned, Federal Income Tax Note [Line Items]
Income tax expense		$ 548,000