Waterstone Financial (WSBF) 10-Q 31 Jul 19 2019 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2019	Jul. 29, 2019
Document and Entity Information [Abstract]
Entity Registrant Name	Waterstone Financial, Inc.
Entity Central Index Key	0001569994
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	No
Entity Interactive Data Current	Yes
Entity Shell Company	false
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		27,492,460
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Entity Address, State or Province	MD

CONSOLIDATED STATEMENTS OF FINA

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Assets
Cash	$ 47,253	$ 48,234
Federal funds sold	13,339	25,100
Interest-earning deposits in other financial institutions and other short term investments	9,553	12,767
Cash and cash equivalents	70,145	86,101
Securities available for sale	182,862	185,720
Loans held for sale (at fair value)	244,052	141,616
Loans receivable	1,370,727	1,379,148
Less: Allowance for loan losses	12,617	13,249
Loans receivable, net	1,358,110	1,365,899
Office properties and equipment, net	24,978	24,524
Federal Home Loan Bank stock (at cost)	22,275	19,350
CSV of line insurance	68,581	67,550
Real estate owned, net	1,684	2,152
Prepaid expenses and other assets	42,451	22,469
Total assets	2,015,138	1,915,381
Liabilities:
Demand deposits	127,123	139,111
Money market and savings deposits	182,222	163,511
Time deposits	745,651	735,873
Total deposits	1,054,996	1,038,495
Borrowings	518,681	435,046
Advance payments by borrowers for taxes	18,852	4,371
Other liabilities	35,806	37,790
Total liabilities	1,628,335	1,515,702
Shareholders' equity:
Preferred stock (par value $.01 per share) Authorized - 50,000,000 shares in 2018and 2017, no shares issued	0	0
Common stock (par value $.01 per share) Authorized - 100,000,000 shares in 2018and 2017 Issued - 28,463,239 in 2018 and 29,501,346 in 2017 Outstanding - 28,463,239 in 2018 and 29,501,346 in 2017	276	285
Additional paid-in capital	331,600	330,327
Retained earnings	183,820	187,153
Unearned ESOP shares	(17,210)	(17,804)
Accumulated other comprehensive loss, net of taxes	655	(2,361)
Cost of shares repurchased (7,171,537 in 2018 and 6,030,900 in 2017), at cost	(112,338)	(97,921)
Total shareholders' equity	386,803	399,679
Total liabilities and shareholders' equity	$ 2,015,138	$ 1,915,381

CONSOLIDATED STATEMENTS OF FI_2

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Unaudited) (Parenthetical) - $ / shares	Jun. 30, 2019	Dec. 31, 2018
Shareholders' equity:
Preferred stock - par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock - shares authorized (in shares)	50,000,000	50,000,000
Preferred stock - shares issued (in shares)	0	0
Common stock - par value (in dollars per share)	$ 0.01	$ 0.01
Common stock - shares authorized (in shares)	100,000,000	100,000,000
Common stock - shares issued (in shares)	27,626,310	28,463,239
Common stock - shares outstanding (in shares)	27,626,310	28,463,239
Treasury shares (in shares)	8,039,313	7,171,537

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Interest income:
Loans	$ 18,026	$ 16,700	$ 35,130	$ 32,158
Mortgage-related securities	764	644	1,523	1,282
Debt securities, federal funds sold and short-term investments	1,123	1,019	2,432	1,886
Total interest income	19,913	18,363	39,085	35,326
Interest expense:
Deposits	4,344	2,710	8,334	5,024
Borrowings	2,588	1,933	4,834	3,441
Total interest expense	6,932	4,643	13,168	8,465
Net interest income	12,981	13,720	25,917	26,861
Provision for loan losses	30	(220)	(650)	(1,100)
Net interest income after provision for loan losses	12,951	13,940	26,567	27,961
Noninterest income:
Service charges on loans and deposits	390	491	769	890
Increase in cash surrender value of life insurance	507	473	851	801
Mortgage banking income	34,105	32,090	57,464	56,277
Other	188	264	363	533
Total noninterest income	35,190	33,318	59,447	58,501
Noninterest expenses:
Compensation, payroll taxes, and other employee benefits	27,074	26,234	47,713	47,217
Occupancy, office furniture and equipment	2,680	2,605	5,456	5,244
Advertising	963	1,000	1,921	1,860
Data processing	869	623	1,638	1,248
Communications	353	435	681	817
Professional fees	789	647	1,484	1,347
Real estate owned	19	(126)	51	191
FDIC insurance premiums	879	904	1,684	1,892
Other	1,729	2,415	4,076	5,068
Total noninterest expenses	35,355	34,737	64,704	64,884
Income before income taxes	12,786	12,521	21,310	21,578
Income tax expense	3,143	3,101	5,125	5,205
Net income	$ 9,643	$ 9,420	$ 16,185	$ 16,373
Income per share:
Basic (in dollars per share)	$ 0.37	$ 0.34	$ 0.61	$ 0.60
Diluted (in dollars per share)	$ 0.37	$ 0.34	$ 0.61	$ 0.59
Weighted average shares outstanding:
Basic (in shares)	26,242	27,504	26,370	27,506
Diluted (in shares)	26,412	27,742	26,572	27,790

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Consolidated Statements of Comprehensive Income [Abstract]
Net income	$ 9,643	$ 9,420	$ 16,185	$ 16,373
Net unrealized holding gain on available for sale securities:
Net unrealized holding gain arising during the period, net of tax expense of ($204), ($528), ($356), ($1,728), respectively	1,506	(537)	3,016	(2,696)
Reclassification for net deferred tax liability revaluation	0	0	0	5
Total other comprehensive loss	1,506	(537)	3,016	(2,691)
Comprehensive income	$ 11,149	$ 8,883	$ 19,201	$ 13,682

CONSOLIDATED STATEMENTS OF CO_2

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Other comprehensive income (loss), net of tax
Net unrealized holding loss on available for sale securities arising during the period, net of tax benefit	$ (562)	$ 201	$ (1,127)	$ 1,013
Reclassification adjustment for net loss on available for sale securities realized during the period, net of taxes	$ 0	$ 0	$ 0	$ 0

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Unearned ESOP Shares [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Cost of Shares Repurchased [Member]	Total
Balances at Dec. 31, 2017	$ 295	$ 326,655	$ 183,358	$ (18,991)	$ (477)	$ (78,736)	$ 412,104
Balances (in shares) at Dec. 31, 2017	29,501,000
Comprehensive income:
Net income	$ 0	0	16,373	0	0	0	16,373
Other comprehensive loss	0	0	0	0	(2,691)	0	(2,691)
Total comprehensive income							13,682
Reclassification for net deferred tax liability revaluation	0	0	(5)	0	0	0	(5)
ESOP shares committed to be released to Plan participants	0	320	0	594	0	0	914
Cash dividend	0	0	(20,459)	0	0	0	(20,459)
Stock compensation activity, net of tax	$ 0	599	0	0	0	0	599
Stock compensation activity, net of tax (in shares)	48,000
Stock based compensation expense	$ 0	876	0	0	0	0	876
Purchase of common stock returned to authorized but unissued						(3,965)
Purchase of common stock returned to authorized but unissued	$ (2)	0	0	0	0		(3,967)
Purchase of common stock returned to authorized but unissued (in shares)	(231,000)
Balances at Jun. 30, 2018	$ 293	328,450	179,267	(18,397)	(3,168)	(82,701)	403,744
Balances (in shares) at Jun. 30, 2018	29,318,000
Balances at Mar. 31, 2018	$ 293	327,748	173,163	(18,694)	(2,631)	(82,460)	397,419
Balances (in shares) at Mar. 31, 2018	29,324,000
Comprehensive income:
Net income	$ 0	0	9,420	0	0	0	9,420
Other comprehensive loss	0	0	0	0	(537)	0	(537)
Total comprehensive income							8,883
Reclassification for net deferred tax liability revaluation							0
ESOP shares committed to be released to Plan participants	0	161	0	297	0	0	458
Cash dividend	0	0	(3,316)	0	0	0	(3,316)
Stock compensation activity, net of tax	$ 0	105	0	0	0	0	105
Stock compensation activity, net of tax (in shares)	8,000
Stock based compensation expense	$ 0	436	0	0	0	0	436
Purchase of common stock returned to authorized but unissued						(241)
Purchase of common stock returned to authorized but unissued	$ 0	0	0	0	0		(241)
Purchase of common stock returned to authorized but unissued (in shares)	(14,000)
Balances at Jun. 30, 2018	$ 293	328,450	179,267	(18,397)	(3,168)	(82,701)	403,744
Balances (in shares) at Jun. 30, 2018	29,318,000
Balances at Dec. 31, 2018	$ 285	330,327	187,153	(17,804)	(2,361)	(97,921)	$ 399,679
Balances (in shares) at Dec. 31, 2018	28,463,000						28,463,239
Comprehensive income:
Net income	$ 0	0	16,185	0	0	0	$ 16,185
Other comprehensive loss	0	0	0	0	3,016	0	3,016
Total comprehensive income							19,201
Reclassification for net deferred tax liability revaluation							0
ESOP shares committed to be released to Plan participants	0	281	0	594	0	0	875
Cash dividend	0	0	(19,518)	0	0	0	(19,518)
Stock compensation activity, net of tax	$ 0	394	0	0	0	0	394
Stock compensation activity, net of tax (in shares)	31,000
Stock based compensation expense	$ 0	598	0	0	0	0	598
Purchase of common stock returned to authorized but unissued						(14,417)
Purchase of common stock returned to authorized but unissued	$ (9)	0	0	0	0		(14,426)
Purchase of common stock returned to authorized but unissued (in shares)	(868,000)
Balances at Jun. 30, 2019	$ 276	331,600	183,820	(17,210)	655	(112,338)	$ 386,803
Balances (in shares) at Jun. 30, 2019	27,626,000						27,626,310
Balances at Mar. 31, 2019	$ 280	331,128	177,303	(17,507)	(851)	(105,885)	$ 384,468
Balances (in shares) at Mar. 31, 2019	28,004,000
Comprehensive income:
Net income	$ 0	0	9,643	0	0	0	9,643
Other comprehensive loss	0	0	0	0	1,506	0	1,506
Total comprehensive income							11,149
Reclassification for net deferred tax liability revaluation							0
ESOP shares committed to be released to Plan participants	0	141	0	297	0	0	438
Cash dividend	0	0	(3,126)	0	0	0	(3,126)
Stock compensation activity, net of tax	$ 0	102	0	0	0	0	102
Stock compensation activity, net of tax (in shares)	8,000
Stock based compensation expense	$ 0	229	0	0	0	0	229
Purchase of common stock returned to authorized but unissued						(6,453)
Purchase of common stock returned to authorized but unissued	$ (4)	0	0	0	0		(6,457)
Purchase of common stock returned to authorized but unissued (in shares)	(386,000)
Balances at Jun. 30, 2019	$ 276	$ 331,600	$ 183,820	$ (17,210)	$ 655	$ (112,338)	$ 386,803
Balances (in shares) at Jun. 30, 2019	27,626,000						27,626,310

CONSOLIDATED STATEMENTS OF CH_2

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Unaudited) (Parenthetical) - $ / shares	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Unaudited) [Abstract]
Cash dividends (in dollars per share)	$ 0.74	$ 0.74

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Operating activities:
Net income	$ 16,185,000	$ 16,373,000
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Provision for loan losses	(650,000)	(1,100,000)
Provision for depreciation	1,215,000	1,116,000
Deferred Taxes Cash Flow	1,768,000	(799,000)
Stock based compensation	598,000	876,000
Net amortization of premium/discount on debt and mortgage related securities	113,000	271,000
Amortization of unearned ESOP shares	875,000	914,000
Amortization and impairment of mortgage servicing rights	109,000	89,000
Gain on sale of loans held for sale	(58,304,000)	(52,350,000)
Loans originated for sale	(1,270,121,000)	(1,190,708,000)
Proceeds on sales of loans originated for sale	1,225,988,000	1,250,000,000
Increase in accrued interest receivable	(259,000)	(89,000)
Increase in cash surrender value of life insurance	(851,000)	(801,000)
Increase (decrease) in accrued interest on deposits and borrowings	136,000	149,000
Increase (decrease) in other liabilities	(506,000)	(759,000)
(Increase) decrease in prepaid income tax	582,000	212,000
Net gain on real estate owned	(20,000)	(4,000)
Other	(14,735,000)	(8,698,000)
Net cash provided by (used in) operating activities	(97,877,000)	14,692,000
Investing activities:
Net increase in loans receivable	7,697,000	(50,494,000)
Net change on FHLB stock	(2,925,000)	(2,475,000)
Purchases of:
Mortgage related securities	(6,759,000)	(7,038,000)
Premises and equipment, net	(1,722,000)	(577,000)
Bank owned life insurance	(180,000)	(180,000)
Mortgage Banking Branch	0	(600,000)
Proceeds from:
Principal repayments on mortgage-related securities	12,930,000	14,648,000
Maturities of debt securities	1,835,000	3,105,000
Sales of real estate owned	1,204,000	2,456,000
Net cash used in investing activities	12,080,000	(41,155,000)
Financing activities:
Net increase in deposits	16,501,000	28,060,000
Net change in short term borrowings	18,635,000	(43,762,000)
Repayment of long term debt	(100,000,000)	(115,000,000)
Proceeds from long term debt	165,000,000	205,000,000
Net (decrease) increase in advance payments by borrowers for taxes	3,511,000	5,533,000
Cash dividends in common stock	(19,774,000)	(20,491,000)
Purchase of common stock returned to authorized but unissued	(14,426,000)	(3,967,000)
Proceeds from stock option exercises	394,000	599,000
Net cash provided by (used in) financing activities	69,841,000	55,972,000
Increase (decrease) in cash and cash equivalents	(15,956,000)	29,509,000
Cash and cash equivalents at beginning of year	86,101,000	48,607,000
Cash and cash equivalents at end of year	70,145,000	78,116,000
Cash paid or credited during the period for:
Income tax payments	3,904,000	4,783,000
Interest payments	13,032,000	8,316,000
Noncash activities:
Loans receivable transferred to real estate owned	743,000	318,000
Dividends declared but not paid in other liabilities	$ 3,542,000	$ 3,863,000

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2019
Basis of Presentation [Abstract]
Basis of Presentation	Note 1 — Basis of Presentation The unaudited interim consolidated financial statements include the accounts of Waterstone Financial, Inc. (the “Company”) and the Company’s subsidiaries. WaterStone Bank SSB (the "Bank") is a community bank that has served the banking needs of its customers since 1921. WaterStone Bank also has an active mortgage banking subsidiary, Waterstone Mortgage Corporation. WaterStone Bank conducts its community banking business from 11 banking offices located in Milwaukee, Washington and Waukesha Counties, Wisconsin, as well as a loan production office in Minneapolis, Minnesota. WaterStone Bank's principal lending activity is originating one- to four-family, multi-family residential real estate, and commercial real estate loans for retention in its portfolio. WaterStone Bank also offers home equity loans and lines of credit, construction and land loans, and commercial business loans, and consumer loans. WaterStone Bank funds its loan production primarily with retail deposits and Federal Home Loan Bank advances. Our deposit offerings include: certificates of deposit, money market savings accounts, transaction deposit accounts, non-interest bearing demand accounts and individual retirement accounts. Our investment securities portfolio is comprised principally of mortgage-backed securities, government-sponsored enterprise bonds and municipal obligations. WaterStone Bank's mortgage banking operations are conducted through its wholly-owned subsidiary, Waterstone Mortgage Corporation. Waterstone Mortgage Corporation originates single-family residential real estate loans for sale into the secondary market. Waterstone Mortgage Corporation utilizes lines of credit provided by WaterStone Bank as a primary source of funds, and also utilizes a line of credit with another financial institution as needed. The accompanying unaudited consolidated financial statements have been prepared in accordance with generally accepted accounting principles (“GAAP”) for interim financial information, Rule 10-01 of Regulation S-X and the instructions to Form 10-Q. The financial statements do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, the accompanying unaudited consolidated financial statements contain all adjustments (consisting of normal recurring accruals) necessary to present fairly the financial position, results of operations, changes in shareholders’ equity, and cash flows of the Company for the periods presented. The accompanying unaudited consolidated financial statements and related notes should be read in conjunction with the Company’s December 31, 2018 Annual Report on Form 10-K. Operating results for the three and six months ended June 30, 2019 are not necessarily indicative of the results that may be expected for the year ending December 31, 2019 or for any other period. The preparation of the unaudited consolidated financial statements requires management of the Company to make a number of estimates and assumptions relating to the reported amount of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the period. Significant items subject to such estimates and assumptions include the allowance for loan losses, deferred income taxes and real estate owned. Actual results could differ from those estimates. Certain prior period amounts have been reclassified to conform to current period presentation. These reclassifications did not result in any changes to previously reported net income or shareholders' equity. Impact of Recent Accounting Pronouncements Accounting Standards Codification ("ASC") Topic 606 "Revenue from Contracts with Customers." Revenue Recognition The Company recognizes revenue as it is earned and noted no impact to its revenue recognition policies as a result of the adoption of ASC 606. The following is a discussion of revenues within the scope of the new revenue guidance: ● Debit and credit card interchange fee income ● Service charges on deposit accounts ● Service charges on loan accounts ASC Topic 842 "Leases." ASC Topic 326 "Financial Instruments - Credit Losses." ASC Topic 310 "Receivables - Nonrefundable Fees and Other Costs."

Securities Available for Sale

Securities Available for Sale	6 Months Ended
	Jun. 30, 2019
Securities Available for Sale [Abstract]
Securities Available for Sale	Note 2— Securities Available for Sale The amortized cost and fair values of the Company’s investment in securities available for sale follow: June 30, 2019 Amortized cost Gross unrealized gains Gross unrealized losses Fair value (In Thousands) Mortgage-backed securities $ 38,250 $ 329 $ (45 ) $ 38,534 Collateralized mortgage obligations: Government sponsored enterprise issued 74,749 1,272 (157 ) 75,864 Mortgage-related securities 112,999 1,601 (202 ) 114,398 Municipal securities 53,270 1,624 (1 ) 54,893 Other debt securities 15,002 - (1,431 ) 13,571 Debt securities 68,272 1,624 (1,432 ) 68,464 $ 181,271 $ 3,225 $ (1,634 ) $ 182,862 December 31, 2018 Amortized cost Gross unrealized gains Gross unrealized losses Fair value (In Thousands) Mortgage-backed securities $ 42,105 $ 91 $ (565 ) $ 41,631 Collateralized mortgage obligations: Government sponsored enterprise issued 75,923 243 (1,211 ) 74,955 Mortgage-related securities 118,028 334 (1,776 ) 116,586 Municipal securities 55,242 825 (119 ) 55,948 Other debt securities 15,002 - (1,816 ) 13,186 Debt securities 70,244 825 (1,935 ) 69,134 $ 188,272 $ 1,159 $ (3,711 ) $ 185,720 The Company’s mortgage-backed securities and collateralized mortgage obligations issued by government sponsored enterprises are guaranteed by Fannie Mae, Freddie Mac or Ginnie Mae. At June 30, 2019, $1.6 million of the Company’s mortgage related securities were pledged as collateral to secure At December 31, 2018, of the Company's mortgage related securities were pledged as collateral to secure The amortized cost and fair values of investment securities by contractual maturity at June 30, 2019 are shown below. Actual maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties. Amortized Cost Fair Value (In Thousands) Debt and other securities Due within one year $ 8,312 $ 8,314 Due after one year through five years 26,204 26,587 Due after five years through ten years 23,135 24,245 Due after ten years 10,621 9,318 Mortgage-related securities 112,999 114,398 $ 181,271 $ 182,862 Gross unrealized losses on securities available for sale and the fair value of the related securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position were as follows: June 30, 2019 Less than 12 months 12 months or longer Total Fair value Unrealized loss Fair value Unrealized loss Fair value Unrealized loss (In Thousands) Mortgage-backed securities $ - $ - $ 7,405 $ (45 ) $ 7,405 $ (45 ) Collateralized mortgage obligations: Government sponsored enterprise issued - - 19,434 (157 ) 19,434 (157 ) Municipal securities - - 727 (1 ) 727 (1 ) Other debt securities - - 8,569 (1,431 ) 8,569 (1,431 ) $ - $ - $ 36,135 $ (1,634 ) $ 36,135 $ (1,634 ) December 31, 2018 Less than 12 months 12 months or longer Total Fair value Unrealized loss Fair value Unrealized loss Fair value Unrealized loss (In Thousands) Mortgage-backed securities $ 3,036 $ (9 ) $ 33,029 $ (556 ) $ 36,065 $ (565 ) Collateralized mortgage obligations: Government sponsored enterprise issued 3,079 (13 ) 47,279 (1,198 ) 50,358 (1,211 ) Municipal securities 7,595 (17 ) 11,272 (102 ) 18,867 (119 ) Other debt securities - - 13,186 (1,816 ) 13,186 (1,816 ) $ 13,710 $ (39 ) $ 104,766 $ (3,672 ) $ 118,476 $ (3,711 ) The Company reviews the investment securities portfolio on a quarterly basis to monitor its exposure to other-than-temporary impairment. In evaluating whether a security’s decline in market value is other-than-temporary, management considers the length of time and extent to which the fair value has been less than cost, the financial condition of the issuer and the underlying obligors, quality of credit enhancements, volatility of the fair value of the security, the expected recovery period of the security and ratings agency evaluations. In addition, the Company may also evaluate payment structure, whether there are defaulted payments or expected defaults, prepayment speeds and the value of any underlying collateral. The following table presents the change in other-than-temporary credit related impairment charges on securities available for sale for which a portion of the other-than-temporary impairments related to other factors was recognized in other comprehensive loss. (In Thousands) Credit-related impairments on securities as of December 31, 2017 $ 94 Credit-related impairments related to securities for which an other- than-temporary impairment was not previously recognized - Credit-related impairments on securities as of December 31, 2018 94 Credit-related impairments related to securities for which an other- than-temporary impairment was not previously recognized - Credit-related impairments on securities as of June 30, 2019 $ 94 As of June 30, 2019, the Company held one municipal security that had previously been deemed to be other-than-temporarily impaired. The security was issued by a tax incremental district in a municipality located in Wisconsin. During the year ended December 31, 2012, the Company received audited financial statements with respect to the municipal issuer that called into question the ability of the underlying taxing district that issued the security to operate as a going concern. During the year ended December 31, 2012, the Company's analysis of this security resulted in $77,000 in credit losses charged to earnings with respect to this municipal security. An additional $17,000 credit loss was charged to earnings during the year ended December 31, 2014 with respect to this security as a sale occurred at a discounted price. As of June 30, 2019, this security had an amortized cost of $116,000 and total life-to-date impairment of $94,000. As of June 30, 2019, the Company had 11 mortgage-backed securities, 20 government sponsored enterprise issued securities, three municipal bond securities, and one corporate debt securities which had been in an unrealized loss position for twelve months or longer and represents a loss of 4.3% of the aggregate amortized cost. These securities were determined not to be other-than-temporarily impaired as of June 30, 2019. The Company has determined that the decline in fair value of these securities is primarily attributable to an increase in market interest rates compared to the stated rates on these securities and is not attributable to credit deterioration. As the Company does not intend to sell nor is it more likely than not that it will be required to sell these securities before recovery of the amortized cost basis, these securities are not considered other-than-temporarily impaired. The unrealized losses for the other debt security with an unrealized loss greater than 12 months is due to the current slope of the yield curve. The security currently earns a floating rate that is indexed to the 10 year Treasury interest rate that is reset on a quarterly basis. The Company does not intend to sell nor does it believe that it will be required to sell the security before recovery of their amortized cost basis. Deterioration of general economic market conditions could result in the recognition of future other than temporary impairment losses within the investment portfolio and such amounts could be material to our consolidated financial statements. During the three and six months ended June 30, 2019 and June 30, 2018, there were no sales of securities.

Loans Receivable

Loans Receivable	6 Months Ended
	Jun. 30, 2019
Loan Receivable [Abstract]
Loans Receivable	Note 3 - Loans Receivable Loans receivable at June 30, 2019 and December 31, 2018 are summarized as follows: June 30, 2019 December 31, 2018 (In Thousands) Mortgage loans: Residential real estate: One- to four-family $ 478,006 $ 489,979 Multi-family 592,692 597,087 Home equity 19,242 19,956 Construction and land 25,491 13,361 Commercial real estate 223,553 225,522 Consumer 662 433 Commercial loans 31,081 32,810 $ 1,370,727 $ 1,379,148 The Company provides several types of loans to its customers, including residential, construction, commercial and consumer loans. Significant loan concentrations are considered to exist for a financial institution when there are amounts loaned to one borrower or to multiple borrowers engaged in similar activities that would cause them to be similarly impacted by economic or other conditions. While the Company's credit risks are geographically concentrated in the Milwaukee metropolitan area, there are no concentrations with individual or groups of related borrowers. While the real estate collateralizing these loans is primarily residential in nature, it ranges from owner-occupied single family homes to large apartment complexes. Qualifying loans receivable totaling $1.08 billion and $1.01 billion at June 30, 2019 and December 31, 2018, respectively, are pledged as collateral against $495.0 million and $430.0 million in outstanding Federal Home Loan Bank of Chicago ("FHLB") advances under a blanket security agreement at June 30, 2019 and December 31, 2018. Certain of the Company's executive officers, directors, employees, and their related interests have loans with the Bank. Loans outstanding to such parties were approximately $5.3 million as of June 30, 2019 and December 31, 2018. None of these loans were past due or considered impaired as of June 30, 2019 or December 31, 2018. As of June 30, 2019 and December 31, 2018, there were no loans 90 or more days past due and still accruing interest. An analysis of past due loans receivable as of June 30, 2019 and December 31, 2018 follows: As of June 30, 2019 1-59 Days Past Due (1) 60-89 Days Past Due (2) 90 Days or Greater Total Past Due Current (3) Total Loans (In Thousands) Mortgage loans: Residential real estate: One- to four-family $ 3,517 $ 599 $ 2,884 $ 7,000 $ 471,006 $ 478,006 Multi-family - - 576 576 592,116 592,692 Home equity 169 - - 169 19,073 19,242 Construction and land - - - - 25,491 25,491 Commercial real estate 287 - 93 380 223,173 223,553 Consumer - - - - 662 662 Commercial loans 208 - 1 209 30,872 31,081 Total $ 4,181 $ 599 $ 3,554 $ 8,334 $ 1,362,393 $ 1,370,727 As of December 31, 2018 1-59 Days Past Due (1) 60-89 Days Past Due (2) 90 Days or Greater Total Past Due Current (3) Total Loans (In Thousands) Mortgage loans: Residential real estate: One- to four-family $ 1,523 $ 76 $ 3,834 $ 5,433 $ 484,546 $ 489,979 Multi-family - - 937 937 596,150 597,087 Home equity 216 42 111 369 19,587 19,956 Construction and land - - - - 13,361 13,361 Commercial real estate 39 - 125 164 225,358 225,522 Consumer 29 - - 29 404 433 Commercial loans - - 18 18 32,792 32,810 Total $ 1,807 $ 118 $ 5,025 $ 6,950 $ 1,372,198 $ 1,379,148 (1) (2) (3) A summary of the activity for the six months ended June 30, 2019 and 2018 in the allowance for loan losses follows: One- to Four- Family Multi-Family Home Equity Construction and Land Commercial Real Estate Consumer Commercial Total (In Thousands) Six months ended June 30, 2019 Balance at beginning of period $ 5,742 $ 4,153 $ 325 $ 400 $ 2,126 $ 20 $ 483 $ 13,249 Provision (credit) for loan losses (449 ) 154 (54 ) 12 (214 ) (3 ) (96 ) (650 ) Charge-offs (25 ) (1 ) (8 ) - - (5 ) - (39 ) Recoveries 35 9 12 - 1 - - 57 Balance at end of period $ 5,303 $ 4,315 $ 275 $ 412 $ 1,913 $ 12 $ 387 $ 12,617 Six months ended June 30, 2018 Balance at beginning of period $ 5,794 $ 4,431 $ 356 $ 949 $ 1,881 $ 10 $ 656 $ 14,077 Provision (credit) for loan losses 102 (425 ) (62 ) (607 ) 87 (1 ) (194 ) (1,100 ) Charge-offs (62 ) - - - - - - (62 ) Recoveries 85 70 13 40 1 - - 209 Balance at end of period $ 5,919 $ 4,076 $ 307 $ 382 $ 1,969 $ 9 $ 462 $ 13,124 A summary of the allowance for loan loss for loans evaluated individually and collectively for impairment by collateral class as of June 30, 2019 follows: One- to Four- Family Multi- Family Home Equity Construction and Land Commercial Real Estate Consumer Commercial Total (In Thousands) Allowance related to loans individually evaluated for impairment $ 71 $ 80 $ 26 $ - $ 9 $ - $ - $ 186 Allowance related to loans collectively evaluated for impairment 5,232 4,235 249 412 1,904 12 387 12,431 Balance at end of period $ 5,303 $ 4,315 $ 275 $ 412 $ 1,913 $ 12 $ 387 $ 12,617 Loans individually evaluated for impairment $ 6,988 $ 1,261 $ 126 $ - $ 374 $ - $ 1 $ 8,750 Loans collectively evaluated for impairment 471,018 591,431 19,116 25,491 223,179 662 31,080 1,361,977 Total gross loans $ 478,006 $ 592,692 $ 19,242 $ 25,491 $ 223,553 $ 662 $ 31,081 $ 1,370,727 A summary of the allowance for loan loss for loans evaluated individually and collectively for impairment by collateral class as of December 31, 2018 follows: One- to Four-Family Multi- Family Home Equity Construction and Land Commercial Real Estate Consumer Commercial Total (In Thousands) Allowance related to loans individually evaluated for impairment $ 73 $ - $ 46 $ - $ 67 $ - $ - $ 186 Allowance related to loans collectively evaluated for impairment 5,669 4,153 279 400 2,059 20 483 13,063 Balance at end of period $ 5,742 $ 4,153 $ 325 $ 400 $ 2,126 $ 20 $ 483 $ 13,249 Loans individually evaluated for impairment $ 7,642 $ 1,309 $ 246 $ - $ 2,885 $ - $ 18 $ 12,100 Loans collectively evaluated for impairment 482,337 595,778 19,710 13,361 222,637 433 32,792 1,367,048 Total gross loans $ 489,979 $ 597,087 $ 19,956 $ 13,361 $ 225,522 $ 433 $ 32,810 $ 1,379,148 The following table presents information relating to the Company’s internal risk ratings of its loans receivable as of June 30, 2019 and December 31, 2018: One to Four- Family Multi-Family Home Equity Construction and Land Commercial Real Estate Consumer Commercial Total (In Thousands) At June 30, 2019 Substandard $ 7,376 $ 1,261 $ 320 $ - $ 918 $ - $ 875 $ 10,750 Watch 5,628 486 - - 1,442 - 608 8,164 Pass 465,002 590,945 18,922 25,491 221,193 662 29,598 1,351,813 $ 478,006 $ 592,692 $ 19,242 $ 25,491 $ 223,553 $ 662 $ 31,081 $ 1,370,727 At December 31, 2018 Substandard $ 7,799 $ 1,309 $ 246 $ - $ 678 $ - $ 889 $ 10,921 Watch 4,662 491 468 - 4,343 - 906 10,870 Pass 477,518 595,287 19,242 13,361 220,501 433 31,015 1,357,357 $ 489,979 $ 597,087 $ 19,956 $ 13,361 $ 225,522 $ 433 $ 32,810 $ 1,379,148 Factors that are important to managing overall credit quality include sound loan underwriting and administration, systematic monitoring of existing loans and commitments, effective loan review on an ongoing basis, early identification of potential problems, an allowance for loan losses, and sound non-accrual and charge-off policies. Our underwriting policies require an officers' loan committee review and approval of all loans in excess of $500,000. A member of the credit department, independent of the loan originator, performs a loan review for all loans. Our ability to manage credit risk depends in large part on our ability to properly identify and manage problem loans. To do so, we maintain a loan review system under which our credit management personnel review non-owner occupied one- to four-family, multi-family, construction and land, and commercial real estate that individually, or as part of an overall borrower relationship exceed $1.0 million in potential exposure and review commercial loans that individually, or as part of an overall borrower relationship exceed $200,000 in potential exposure. Loans meeting these criteria are reviewed on an annual basis, or more frequently, if the loan renewal is less than one year. With respect to this review process, management has determined that pass loans include loans that exhibit acceptable financial statements, cash flow and leverage. Watch loans have potential weaknesses that deserve management's attention, and if left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the credit. Substandard loans are considered inadequately protected by the current net worth and paying capacity of the obligor or the collateral pledged. These loans generally have a well-defined weakness that may jeopardize liquidation of the debt and are characterized by the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected. Finally, a loan is considered to be impaired when it is probable that the Company will not be able to collect all amounts due according to the contractual terms of the loan agreement. Management has determined that all non-accrual loans and loans modified under troubled debt restructurings meet the definition of an impaired loan. The Company's procedures dictate that an updated valuation must be obtained with respect to underlying collateral at the time a loan is deemed impaired. Updated valuations may also be obtained upon transfer from loans receivable to real estate owned based upon the age of the prior appraisal, changes in market conditions or known changes to the physical condition of the property. Estimated fair values are reduced to account for sales commissions, broker fees, unpaid property taxes and additional selling expenses to arrive at an estimated net realizable value. The adjustment factor is based upon the Company's actual experience with respect to sales of real estate owned over the prior two years. In situations in which we are placing reliance on an appraisal that is more than one year old, an additional adjustment factor is applied to account for downward market pressure since the date of appraisal. The additional adjustment factor is based upon relevant sales data available for our general operating market as well as company-specific historical net realizable values as compared to the most recent appraisal prior to disposition. With respect to multi-family income-producing real estate, appraisals are reviewed and estimated collateral values are adjusted by updating significant appraisal assumptions to reflect current real estate market conditions. Significant assumptions reviewed and updated include the capitalization rate, rental income and operating expenses. These adjusted assumptions are based upon recent appraisals received on similar properties as well as on actual experience related to real estate owned and currently under Company management. The following tables present data on impaired loans at June 30, 2019 and December 31, 2018. As of June 30, 2019 Recorded Investment Unpaid Principal Reserve Cumulative Charge-Offs (In Thousands) Total Impaired with Reserve One- to four-family $ 349 $ 349 $ 71 $ - Multi-family 344 344 80 - Home equity 82 82 26 - Construction and land - - - - Commercial real estate 9 418 9 409 Consumer - - - - Commercial - - - - 784 1,193 186 409 Total Impaired with no Reserve One- to four-family 6,639 7,579 - 940 Multi-family 917 1,745 - 828 Home equity 44 44 - - Construction and land - - - - Commercial real estate 365 365 - - Consumer - - - - Commercial 1 1 - - 7,966 9,734 - 1,768 Total Impaired One- to four-family 6,988 7,928 71 940 Multi-family 1,261 2,089 80 828 Home equity 126 126 26 - Construction and land - - - - Commercial real estate 374 783 9 409 Consumer - - - - Commercial 1 1 - - $ 8,750 $ 10,927 $ 186 $ 2,177 As of December 31, 2018 Recorded Investment Unpaid Principal Reserve Cumulative Charge-Offs (In Thousands) Total Impaired with Reserve One- to four-family $ 462 $ 462 $ 73 $ - Multi-family - - - - Home equity 107 107 46 - Construction and land - - - - Commercial real estate 2,493 2,902 67 409 Consumer - - - - Commercial - - - - 3,062 3,471 186 409 Total Impaired with no Reserve One- to four-family 7,180 8,120 - 940 Multi-family 1,309 2,142 - 833 Home equity 139 139 - - Construction and land - - - - Commercial real estate 392 392 - - Consumer - - - - Commercial 18 18 - - 9,038 10,811 - 1,773 Total Impaired One- to four-family 7,642 8,582 73 940 Multi-family 1,309 2,142 - 833 Home equity 246 246 46 - Construction and land - - - - Commercial real estate 2,885 3,294 67 409 Consumer - - - - Commercial 18 18 - - $ 12,100 $ 14,282 $ 186 $ 2,182 The difference between a loan’s recorded investment and the unpaid principal balance represents a partial charge-off resulting from a confirmed loss when the value of the collateral securing the loan is below the loan balance and management’s assessment that the full collection of the loan balance is not likely. The following tables present data on impaired loans for the six months ended June 30, 2019 and 2018. Six months ended June 30, 2019 2018 Average Recorded Investment Interest Paid Average Recorded Investment Interest Paid (In Thousands) Total Impaired with Reserve One- to four-family $ 353 11 444 15 Multi-family 348 16 - - Home equity 85 5 80 3 Construction and land - - - - Commercial real estate 13 - 30 - Consumer - - - - Commercial - - - - 799 32 554 18 Total Impaired with no Reserve One- to four-family 6,727 213 7,307 193 Multi-family 935 41 791 26 Home equity 46 2 146 2 Construction and land - - - - Commercial real estate 380 9 438 7 Consumer - - - - Commercial 11 1 26 - 8,099 266 8,708 228 Total Impaired One- to four-family 7,080 224 7,751 208 Multi-family 1,283 57 791 26 Home equity 131 7 226 5 Construction and land - - - - Commercial real estate 393 9 468 7 Consumer - - - - Commercial 11 1 26 - $ 8,898 298 9,262 246 When a loan is considered impaired, interest payments received are treated as interest income on a cash basis as long as the remaining book value of the loan (i.e., after charge-off of all identified losses) is deemed to be fully collectible. If the remaining book value is not deemed to be fully collectible, all payments received are applied to unpaid principal. Determination as to the ultimate collectability of the remaining book value is supported by an updated credit department evaluation of the borrower’s financial condition and prospects for repayment, including consideration of the borrower’s sustained historical repayment performance and other relevant factors. The determination as to whether an allowance is required with respect to impaired loans is based upon an analysis of the value of the underlying collateral and/or the borrower’s intent and ability to make all principal and interest payments in accordance with contractual terms. The evaluation process is subject to the use of significant estimates and actual results could differ from estimates. This analysis is primarily based upon third party appraisals and/or a discounted cash flow analysis. In those cases in which no allowance has been provided for an impaired loan, the Company has determined that the estimated value of the underlying collateral exceeds the remaining outstanding balance of the loan. Of the total $8.0 million of impaired loans as of June 30, 2019 for which no allowance has been provided, $1.8 million in net charge-offs have been recorded to reduce the unpaid principal balance to an amount that is commensurate with the loans’ net realizable value, using the estimated fair value of the underlying collateral. To the extent that further deterioration in property values continues, the Company may have to reevaluate the sufficiency of the collateral servicing these impaired loans which may result in additional provisions to the allowance for loans losses or charge-offs. At June 30, 2019, total impaired loans included $4.1 million of troubled debt restructurings. Troubled debt restructurings involve granting concessions to a borrower experiencing financial difficulty by modifying the terms of the loan in an effort to avoid foreclosure. The vast majority of debt restructurings include a modification of terms to allow for an interest only payment and/or reduction in interest rate. The restructured terms are typically in place for six to twelve months. At December 31, 2018, total impaired loans included $6.7 million of troubled debt restructurings. The following presents data on troubled debt restructurings: As of June 30, 2019 Accruing Non-accruing Total Amount Number Amount Number Amount Number (Dollars in Thousands) One- to four-family $ 2,740 2 $ 769 5 $ 3,509 7 Multi-family - - 341 2 341 2 Commercial real estate 281 1 9 1 290 2 $ 3,021 3 $ 1,119 8 $ 4,140 11 As of December 31, 2018 Accruing Non-accruing Total Amount Number Amount Number Amount Number (Dollars in Thousands) One- to four-family $ 2,740 2 $ 844 5 $ 3,584 7 Multi-family - - 372 2 372 2 Commercial real estate 2,759 2 17 1 2,776 3 $ 5,499 4 $ 1,233 8 $ 6,732 12 At June 30, 2019, $4.1 million in loans had been modified in troubled debt restructurings and $1.1 million of these loans were included in the non-accrual loan total. The remaining $3.0 million, while meeting the internal requirements for modification in a troubled debt restructuring, were current with respect to payments under their original loan terms at the time of the restructuring and, therefore, continued to be included with accruing loans. Provided these loans perform in accordance with the modified terms, they will continue to be accounted for on an accrual basis. All loans that have been modified in a troubled debt restructuring are considered to be impaired. As such, an analysis has been performed with respect to all of these loans to determine the need for a valuation reserve. When a loan is expected to perform in accordance with the restructured terms and ultimately return to and perform under contract terms, a valuation allowance is established for an amount equal to the excess of the present value of the expected future cash flows under the original contract terms as compared with the modified terms, including an estimated default rate. When there is doubt as to the borrower’s ability to perform under the restructured terms or ultimately return to and perform under market terms, a valuation allowance is established equal to the impairment when the carrying amount exceeds fair value of the underlying collateral. As a result of the impairment analysis, a $9,000 valuation allowance has been established as of June 30, 2019 with respect to the $4.1 million in troubled debt restructurings. As of December 31, 2018, a $67,000 valuation allowance had been established with respect to the $6.7 million in troubled debt restructurings. After a troubled debt restructuring reverts to market terms, a minimum of six consecutive contractual payments must be received prior to consideration for a return to accrual status. If an updated credit department review indicates no other evidence of elevated credit risk, the loan is returned to accrual status at that time. The following presents troubled debt restructurings by concession type: As of June 30, 2019 Performing in accordance with modified terms In Default Total Amount Number Amount Number Amount Number (Dollars in Thousands) Interest reduction and principal forbearance $ 3,316 6 $ 494 2 $ 3,810 8 Interest reduction 330 3 - - 330 3 $ 3,646 9 $ 494 2 $ 4,140 11 As of December 31, 2018 Performing in accordance with modified terms In Default Total Amount Number Amount Number Amount Number (Dollars in Thousands) Interest reduction and principal forbearance $ 5,848 7 $ 546 2 $ 6,394 9 Interest reduction 338 3 - - 338 3 $ 6,186 10 $ 546 2 $ 6,732 12 There were no loans modified as troubled debt restructurings during the three or six months ended June 30, 2019 and June 30, 2018. There were no troubled debt restructurings within the past twelve months for which there was a default during the three or six months ended June 30, 2019 and June 30, 2018. The following table presents data on non-accrual loans as of June 30, 2019 and December 31, 2018: June 30, 2019 December 31, 2018 (Dollars in Thousands) Non-accrual loans: Residential real estate: One- to four-family $ 4,249 $ 4,902 Multi-family 1,261 1,309 Home equity 81 201 Construction and land - - Commercial real estate 93 125 Commercial 1 18 Consumer - - Total non-accrual loans $ 5,685 $ 6,555 Total non-accrual loans to total loans receivable 0.41 % 0.48 % Total non-accrual loans to total assets 0.28 % 0.34 %

Real Estate Owned

Real Estate Owned	6 Months Ended
	Jun. 30, 2019
Real Estate Owned [Abstract]
Real Estate Owned [Text Block]	Note 4— Real Estate Owned Real estate owned is summarized as follows: June 30, 2019 December 31, 2018 (In Thousands) One- to four-family $ 250 $ 163 Multi-family - - Construction and land 2,714 3,327 Commercial real estate - 300 Total real estate owned 2,964 3,790 Valuation allowance at end of period (1,280 ) (1,638 ) Total real estate owned, net $ 1,684 $ 2,152 The following table presents the activity in the Company’s real estate owned: Six months ended June 30, 2019 2018 (In Thousands) Real estate owned at beginning of the period $ 2,152 4,558 Transferred from loans receivable 743 318 Sales (net of gains / losses) (1,201 ) (2,197 ) Write downs - (301 ) Other (10 ) - Real estate owned at the end of the period $ 1,684 2,378 Residential one- to four-family mortgage loans that were in the process of foreclosure were $2.3 million and $2.2 million at June 30, 2019 and December 31, 2018, respectively.

Mortgage Servicing Rights

Mortgage Servicing Rights	6 Months Ended
	Jun. 30, 2019
Mortgage Servicing Rights [Abstract]
Mortgage Servicing Rights	Note 5— Mortgage Servicing Rights The following table presents the activity in the Company’s mortgage servicing rights: Six months ended June 30, 2019 2018 (In Thousands) Mortgage servicing rights at beginning of the period $ 109 $ 888 Additions 175 244 Amortization (29 ) (89 ) Sales - - Mortgage servicing rights at end of the period 255 1,043 Valuation allowance at end of period (80 ) - Mortgage servicing rights at end of the period, net $ 175 $ 1,043 During the six months ended June 30, 2019, $1.27 billion in residential loans were originated for sale on a consolidated basis. During the same period, sales of loans held for sale totaled $1.23 billion, generating mortgage banking income of $57.5 million. The unpaid principal balance of loans serviced for others was $34.1 million and $14.1 million at June 30, 2019 and December 31, 2018, respectively. These loans are not reflected in the consolidated statements of financial condition. The fair value of mortgage servicing rights were $186,000 at June 30, 2019 and $1.5 million at June 30, 2018. During the six months ended June 30, 2019 and June 30, 2018, the Company did not sell any mortgage servicing rights. The following table shows the estimated future amortization expense for mortgage servicing rights for the periods indicated: Estimate for the period ending December 31: (In Thousands) 2019 $ 20 2020 34 2021 30 2022 27 2023 23 Thereafter 41 Total $ 175

Deposits

Deposits	6 Months Ended
	Jun. 30, 2019
Deposits [Abstract]
Deposits	Note 6— Deposits At June 30, 2019 and December 31, 2018, time deposits with balances greater than $250,000 amounted to $69.7 million and $60.1 million, respectively. A summary of the contractual maturities of time deposits at June 30, 2019 is as follows: (In Thousands) Within one year $ 538,390 More than one to two years 202,785 More than two to three years 1,459 More than three to four years 2,110 More than four through five years 907 $ 745,651

Borrowings

Borrowings	6 Months Ended
	Jun. 30, 2019
Borrowings [Abstract]
Borrowings	Note 7— Borrowings Borrowings consist of the following: June 30, 2019 December 31, 2018 Balance Weighted Average Rate Balance Weighted Average Rate (Dollars in Thousands) Short term: Repurchase agreement $ 23,681 5.28 % $ 5,046 5.39 % Long term: Federal Home Loan Bank, Chicago advances maturing: 2027 75,000 1.56 % 175,000 1.38 % 2028 255,000 2.37 % 255,000 2.37 % 2029 165,000 1.61 % - - $ 518,681 2.14 % $ 435,046 2.01 % The short-term repurchase agreement represents the outstanding portion of a total $35.0 million commitment with one unrelated bank. The short-term repurchase agreement is utilized by Waterstone Mortgage Corporation to finance loans originated for sale. This agreement is secured by the underlying loans being financed. Related interest rates are based upon the note rate associated with the loans being financed. The short-term repurchase agreement had a $23.7 million balance at June 30, 2019 and a $5.0 million balance at December 31, 2018. The $75.0 million in advances due in 2027 consists of one $25.0 million advance with a fixed rate of 1.23% with a FHLB single call option in August 2019 and one $50.0 million advance with a fixed rate of 1.73% with a FHLB single call option in December 2019. The $255.0 million in advances due in 2028 consists of one $25.0 million advance with a fixed rate of 2.16% with a FHLB single call option in March 2020, two advances totaling $55.0 million with a fixed rate of 2.27% and with a FHLB single call option in March 2021, one advance of $25.0 million with a fixed rate of 2.40% and with a FHLB single call option in May 2020, two advances totaling $50.0 million with fixed rates of 2.34% and 2.48% and with a FHLB single call option in May 2021, one advance of $50.0 million with a fixed rate of 2.34% and with a FHLB quarterly call option beginning in June 2020, and one advance of $50.0 million with a fixed rate of 2.57% and with a FHLB quarterly call option beginning in September 2020. The $165.0 million in advances due in 2029 consists of one $50.0 million advance with a fixed rate of 1.98% with a FHLB quarterly call option in May 2022, one $50.0 million advance with a fixed rate of 1.75% with a FHLB quarterly call option in August 2021, one $25.0 million advance with a fixed rate of 1.52% with a FHLB quarterly call option in November 2020, and one advance of $40.0 million with a fixed rate of 1.02% and with a FHLB quarterly call option beginning in September 2019. The Company selects loans that meet underwriting criteria established by the FHLB as collateral for outstanding advances. The Company’s borrowings from the FHLB are limited to 80% of the carrying value of unencumbered one- to four-family mortgage loans, 75% of the carrying value of multi-family loans and 64% of the carrying value of home equity loans. In addition, these advances were collateralized by FHLB stock of $22.3 million at June 30, 2019 and $19.4 million at December 31, 2018. In the event of prepayment, the Company is obligated to pay all remaining contractual interest on the advance.

Regulatory Capital

Regulatory Capital	6 Months Ended
	Jun. 30, 2019
Regulatory Capital [Abstract]
Regulatory Capital	Note 8 – Regulatory Capital The Company and the Bank are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements, or overall financial performance deemed by the regulators to be inadequate, can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Company’s financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Bank must meet specific capital guidelines that involve quantitative measures of the Company's and Bank’s assets, liabilities, and certain off-balance-sheet items, as calculated under regulatory accounting practices. The Company's and Bank’s capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors. The Federal Reserve Board and the Federal Deposit Insurance Corporation ("FDIC") issued final rules implementing the Basel III regulatory capital framework and related Dodd-Frank Wall Street Reform and Consumer Protection Act changes. The rules revise minimum capital requirements and adjust prompt corrective action thresholds. The final rules revise the regulatory capital elements, add a new common equity Tier I capital ratio, increase the minimum Tier 1 capital ratio requirements and implement a new capital conservation buffer. The rules also permit certain banking organizations to retain, through a one-time election, the existing treatment for accumulated other comprehensive income. The Company and the Bank have made the election to retain the existing treatment for accumulated other comprehensive income. The final rules took effect for the Company and the Bank on January 1, 2015, subject to a transition period for certain parts of the rules. In addition, as a result of the legislation, the federal banking agencies are required to develop a “Community Bank Leverage Ratio” (the ratio of a bank’s tangible equity capital to average total consolidated assets) for financial institutions with assets of less than $10 billion. A “qualifying community bank” that exceeds this ratio will be deemed to be in compliance with all other capital and leverage requirements, including the capital requirements to be considered “well capitalized” under Prompt Corrective Action statutes. The federal banking agencies may consider a financial institution’s risk profile when evaluating whether it qualifies as a community bank for purposes of the capital ratio requirement. The federal banking agencies must set the minimum capital for the new Community Bank Leverage Ratio at not less than 8% and not more than 10% and have proposed 9% as the minimum capital for the ratio. A financial institution can elect to be subject to this new definition. The table below includes the regulatory capital ratio requirements that became effective on January 1, 2015. Beginning in 2016, an additional capital conservation buffer was added to the minimum requirements for capital adequacy purposes, subject to a three year phase-in period. The capital conservation buffer was fully phased-in as of January 1, 2019 at 2.5%. A banking organization with a conservation buffer of less than 2.5% will be subject to limitations on capital distributions, including dividend payments and certain discretionary bonus payments to executive officers. At June 30, 2019, the ratios for the Company and the Bank are sufficient to meet the fully phased-in conservation buffer. The actual and required capital amounts and ratios for the Bank as of June 30, 2019 and December 31, 2018 are presented in the table below: June 30, 2019 Actual For Capital Adequacy Purposes Minimum Capital Adequacy with Capital Buffer To Be Well Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio Amount Ratio (Dollars In Thousands) Total Capital (to risk-weighted assets) Consolidated Waterstone Financial, Inc. $ 398,062 26.12 % $ 121,915 8.00 % $ 160,013 10.50 % $ N/A N/A WaterStone Bank 343,730 22.58 % 121,803 8.00 % 159,867 10.50 % 152,254 10.00 % Tier 1 Capital (to risk-weighted assets) Consolidated Waterstone Financial, Inc. 385,445 25.29 % 91,436 6.00 % 129,534 8.50 % N/A N/A WaterStone Bank 331,113 21.75 % 91,352 6.00 % 129,416 8.50 % 121,803 8.00 % Common Equity Tier 1 Capital (to risk-weighted assets) Consolidated Waterstone Financial, Inc. 385,445 25.29 % 68,577 4.50 % 106,675 7.00 % N/A N/A WaterStone Bank 331,113 21.75 % 68,514 4.50 % 106,578 7.00 % 98,965 6.50 % Tier 1 Capital (to average assets) Consolidated Waterstone Financial, Inc. 385,445 19.44 % 79,296 4.00 % N/A N/A N/A N/A WaterStone Bank 331,113 16.70 % 79,296 4.00 % N/A N/A 99,120 5.00 % State of Wisconsin (to total assets) WaterStone Bank 331,113 16.47 % 120,660 6.00 % N/A N/A N/A N/A December 31, 2018 Actual For Capital Adequacy Purposes Minimum Capital Adequacy with Capital Buffer To Be Well Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio Amount Ratio (Dollars In Thousands) Total Capital (to risk-weighted assets) Consolidated Waterstone Financial, Inc. $ 414,566 28.22 % $ 117,506 8.00 % $ 145,046 9.875 % $ N/A N/A WaterStone Bank 395,783 26.95 % 117,490 8.00 % 145,027 9.875 % 146,863 10.00 % Tier 1 Capital (to risk-weighted assets) Consolidated Waterstone Financial, Inc. 401,317 27.32 % 88,130 6.00 % 115,670 7.875 % N/A N/A WaterStone Bank 382,534 26.05 % 88,118 6.00 % 115,655 7.875 % 117,490 8.00 % Common Equity Tier 1 Capital (to risk-weighted assets) Consolidated Waterstone Financial, Inc. 401,317 27.32 % 66,097 4.50 % 93,638 6.375 % N/A N/A WaterStone Bank 382,534 26.05 % 66,088 4.50 % 93,625 6.375 % 95,461 6.50 % Tier 1 Capital (to average assets) Consolidated Waterstone Financial, Inc. 401,317 21.06 % 76,214 4.00 % N/A N/A N/A N/A WaterStone Bank 382,534 20.08 % 76,214 4.00 % N/A N/A 95,268 5.00 % State of Wisconsin (to total assets) WaterStone Bank 382,534 20.01 % 114,712 6.00 % N/A N/A N/A N/A

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2019
Income Taxes [Abstract]
Income Taxes	Note 9 – Income Taxes Income tax expense decreased $80,000, or 1.5%, to $5.1 million for the six months ended June 30, 2019 compared to $5.2 million during the six months ended June 30, 2018. Income tax expense was recognized on the statement of income during the six months ended June 30, 2019 at an effective rate of 24.0% of pretax income compared to 24.1% during the six months ended June 30, 2018. During the six months ended June 30, 2019, the Company recognized a benefit of approximately $100,000 related to stock awards exercised compared to a benefit of $137,000 recognized during the six months ended June 30, 2018.

Offsetting of Assets and Liabil

Offsetting of Assets and Liabilities	6 Months Ended
	Jun. 30, 2019
Offsetting of Assets and Liabilities [Abstract]
Offsetting of Assets and Liabilities	Note 10 – Offsetting of Assets and Liabilities The Company enters into agreements under which it sells securities subject to an obligation to repurchase the same or similar securities. In addition, the Company enters into agreements under which it sells loans held for sale subject to an obligation to repurchase the same loans. Under these arrangements, the Company may transfer legal control over the assets but still retain effective control through an agreement that both entitles and obligates the Company to repurchase the assets. As a result, these repurchase agreements are accounted for as collateralized financing arrangements (i.e., secured borrowings) and not as a sale and subsequent repurchase of assets. The obligation to repurchase the assets is reflected as a liability in the Company's consolidated statements of financial condition, while the securities and loans held for sale underlying the repurchase agreements remain in the respective investment securities and loans held for sale asset accounts. In other words, there is no offsetting or netting of the investment securities or loans held for sale assets with the repurchase agreement liabilities. The Company's repurchase agreement is subject to master netting agreements, which sets forth the rights and obligations for repurchase and offset. Under the master netting agreement, the Company is entitled to set off the collateral placed with a single counterparty against obligations owed to that counterparty. The following table presents the liabilities subject to an enforceable master netting agreement as of June 30, 2019 and December 31, 2018. Gross Recognized Liabilities Gross Amounts Offset Net Amounts Presented Gross Amounts Not Offset Net Amount (In Thousands) June 30, 2019 Repurchase Agreement Short-term $ 23,681 $ - $ 23,681 $ 23,681 $ - $ 23,681 $ - $ 23,681 $ 23,681 $ - December 31, 2018 Repurchase Agreement Short-term $ 5,046 $ - $ 5,046 $ 5,046 $ - $ 5,046 $ - $ 5,046 $ 5,046 $ -

Commitments, Off-Balance Sheet

Commitments, Off-Balance Sheet Arrangements, and Contingent Liabilities	6 Months Ended
	Jun. 30, 2019
Commitments, Off-Balance Sheet Arrangements, and Contingent Liabilities [Abstract]
Commitments, Off-Balance Sheet Arrangements, and Contingent Liabilities	Note 11– Commitments, Off-Balance Sheet Arrangements, and Contingent Liabilities The Company is a party to financial instruments with off-balance-sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit and standby letters of credit. Those instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amounts recognized in the consolidated statements of financial condition. The contract or notional amounts of those instruments reflect the extent of involvement the Company has in particular classes of financial instruments. June 30, 2019 December 31, 2018 (In Thousands) Financial instruments whose contract amounts represent potential credit risk: Commitments to extend credit under amortizing loans (1) $ 85,611 $ 33,762 Commitments to extend credit under home equity lines of credit (2) 14,742 14,903 Unused portion of construction loans (3) 60,028 79,776 Unused portion of business lines of credit 13,806 16,778 Standby letters of credit 161 860 (1) (2) (3) Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements of the Company. The Company evaluates each customer's creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Company upon extension of credit, is based on management's credit evaluation of the counter-party. Collateral obtained generally consists of mortgages on the underlying real estate. Standby letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third party. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. The Company holds mortgages on the underlying real estate as collateral supporting those commitments for which collateral is deemed necessary. The Company has determined that there are no probable losses related to commitments to extend credit or the standby letters of credit as of June 30, 2019 and December 31, 2018. In the normal course of business, the Company, or its subsidiaries, are involved in various legal proceedings. In the opinion of management, any liability resulting from pending proceedings would not be expected to have a material adverse effect on the Company's consolidated financial statements. Herrington et al. v. Waterstone Mortgage Corporation Waterstone Mortgage Corporation was a defendant in a class action lawsuit that was filed in the United States District Court for the Western District of Wisconsin and subsequently compelled to arbitration before the American Arbitration Association. The plaintiff class alleged that Waterstone Mortgage Corporation violated certain provisions of the Fair Labor Standards Act (FLSA) and failed to pay loan officers consistent with their employment agreements. On July 5, 2017, the arbitrator issued a Final Award finding Waterstone Mortgage Corporation liable for unpaid minimum wages, overtime, unreimbursed business expenses, and liquidated damages under the FLSA. On December 8, 2017, the District Court confirmed the award in large part, and entered a judgment against Waterstone in the amount of $7,267,919 in damages to Claimants, $3,298,851 in attorney fees and costs, and a $20,000 incentive fee to Plaintiff Herrington, plus post-judgment interest. On February 12, 2018, the District Court awarded post-arbitration fees and costs of approximately $98,000. The judgment was appealed by Waterstone to the Seventh Circuit Court of Appeals, where oral argument was held on May 29, 2018. On October 22, 2018, the Seventh Circuit issued a ruling vacating the District Court's order enforcing the arbitration award. If the District Court determined the agreement only allows for individual arbitration, the award would be vacated and the case sent to individual arbitration for a new proceeding. If the District Court determined the arbitration agreement nevertheless allows for collective arbitration, the District Court could have confirmed the prior award. On December 28, 2018, Plaintiff filed a post-remand brief. In it, Plaintiff asked the District Court to reaffirm the arbitration award entered by the arbitrator in full. Alternatively, she asked the Court to affirm her individual damage award and the awards of 123 other opt-ins whose arbitration agreements permit joinder or class actions. Lastly, Plaintiff asked the District Court to have 154 opt-ins intervene and file an amended complaint for individual relief in court. Waterstone opposed the motion on January 28, 2019, and asked the District Court to vacate the prior Final Award in full because Herrington’s arbitration agreement only allowed for individual arbitration. Plaintiff filed its reply on February 14, 2019. On April 25, 2019, the District Court held that Plaintiff’s claims must be resolved through single-plaintiff arbitration. As a result, it vacated the July 5, 2017 arbitration award in its entirety, and closed the case. In May 2019, Herrington and approximately 90 of the prior Claimants filed new demands in arbitration asserting similar claims. Waterstone is in the process of responding to those demands. Waterstone will continue to vigorously defend its interests in these matters and does not believe a loss is probable at this time.

Derivative Financial Instrument

Derivative Financial Instruments	6 Months Ended
	Jun. 30, 2019
Derivative Financial Instruments [Abstract]
Derivative Financial Instruments	Note 12 – Derivative Financial Instruments In connection with its mortgage banking activities, the Company enters into derivative financial instruments as part of its strategy to manage its exposure to changes in interest rates. Mortgage banking derivatives include interest rate lock commitments provided to customers to fund mortgage loans to be sold in the secondary market and forward commitments for the future delivery of such loans to third party investors. It is the Company’s practice to enter into forward commitments for the future delivery of residential mortgage loans when interest rate lock commitments are entered into in order to economically hedge the effect of future changes in interest rates on its commitments to fund the loans as well as on its portfolio of mortgage loans held for sale. The Company’s mortgage banking derivatives have not been designated as hedge relationships. These instruments are used to manage the Company’s exposure to interest rate movements and other identified risks but do not meet the strict hedge accounting requirements of ASC 815. Changes in the fair value of derivatives not designated in hedging relationships are recorded as a component of mortgage banking income in the Company’s consolidated statements of operations. The Company does not use derivatives for speculative purposes. Forward commitments to sell mortgage loans represent commitments obtained by the Company from a secondary market agency to purchase mortgages from the Company at specified interest rates and within specified periods of time. Commitments to sell loans are made to mitigate interest rate risk on interest rate lock commitments to originate loans and loans held for sale. At June 30, 2019, the Company had forward commitments to sell mortgage loans with an aggregate notional amount of approximately $481.0 million and interest rate lock commitments with an aggregate notional amount of approximately $277.4 million. The fair value of the forward commitments to sell mortgage loans at June 30, 2019 included a loss of $1.0 million that is reported as a component of other liabilities on the Company's consolidated statement of financial condition. The fair value of the interest rate locks at June 30, 2019 included a gain of $3.3 million that is reported as a component of other assets on the Company's consolidated statements of financial condition. At December 31, 2018, the Company had forward commitments to sell mortgage loans with an aggregate notional amount of $276.3 million and interest rate lock commitments with an aggregate notional amount of approximately $164.9 million. The fair value of the forward commitments to sell mortgage loans at December 31, 2018 included a loss of $1.1 million that is reported as a component of other liabilities on the Company's consolidated statement of financial condition. The fair value of the interest rate locks at December 31, 2018 included a gain of $2.0 million that is reported as a component of other assets on the Company's consolidated statements of financial condition. In determining the fair value of its derivative loan commitments, the Company considers the value that would be generated by the loan arising from exercise of the loan commitment when sold in the secondary mortgage market. That value includes the price that the loan is expected to be sold for in the secondary mortgage market. The fair value of these commitments is recorded on the consolidated statements of financial condition with the changes in fair value recorded as a component of mortgage banking income. The significant unobservable input used in the fair value measurement of the Company's mortgage banking derivatives, including interest rate lock commitments, is the loan pull through rate. This represents the percentage of loans currently in a lock position which the Company estimates will ultimately close. Generally, the fair value of an interest rate lock commitment will be positively (negatively) impacted when the prevailing interest rate is lower (higher) than the interest rate lock commitment. Generally, an increase in the pull through rate will result in the fair value of the interest rate lock increasing when in a gain position, or decreasing when in a loss position. The pull through rate is largely dependent on the loan processing stage that a loan is currently in and the change in prevailing interest rates from the time of the rate lock. The pull through rate is computed using historical data and the ratio is periodically reviewed by the Company. Residential mortgage loans sold to others are predominantly conventional residential first lien mortgages. The Company’s agreements to sell residential mortgage loans in the normal course of business usually require certain representations and warranties on the underlying loans sold related to credit information, loan documentation and collateral, which if subsequently are untrue or breached, could require the Company to repurchase certain loans affected. The Company has only been required to make insignificant repurchases as a result of breaches of these representations and warranties. The Company’s agreements to sell residential mortgage loans also contain limited recourse provisions. The recourse provisions are limited in that the recourse provision ends after certain payment criteria have been met. With respect to these loans, repurchase could be required if defined delinquency issues arose during the limited recourse period. Given that the underlying loans delivered to buyers are predominantly conventional first lien mortgages and that historical experience shows negligible losses and insignificant repurchase activity, management believes that losses and repurchases under the limited recourse provisions will continue to be insignificant.

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2019
Earnings Per Share [Abstract]
Earnings Per Share	Note 13 – Earnings Per Share Earnings per share are computed using the two-class method. Basic earnings per share is computed by dividing net income allocated to common shares by the weighted average number of common shares outstanding during the applicable period. Diluted earnings per share is computed by dividing net income by the weighted average number of common shares outstanding adjusted for the dilutive effect of all potential common shares. Presented below are the calculations for basic and diluted earnings per share: Three months ended June 30, Six months ended June 30, 2019 2018 2019 2018 (In Thousands, except per share amounts) Net income $ 9,643 $ 9,420 $ 16,185 $ 16,373 Weighted average shares outstanding 26,242 27,504 26,370 27,506 Effect of dilutive potential common shares 170 238 202 284 Diluted weighted average shares outstanding 26,412 27,742 26,572 27,790 Basic earnings per share $ 0.37 $ 0.34 $ 0.61 $ 0.60 Diluted earnings per share $ 0.37 $ 0.34 $ 0.61 $ 0.59

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2019
Fair Values Measurements [Abstract]
Fair Values Measurements	Note 14 – Fair Value Measurements ASC Topic 820, "Fair Value Measurements and Disclosures" defines fair value, establishes a framework for measuring fair value, and expands disclosures about fair value measurements. This accounting standard applies to reported balances that are required or permitted to be measured at fair value under existing accounting pronouncements. The standard also emphasizes that fair value (i.e., the price that would be received in an orderly transaction that is not a forced liquidation or distressed sale at the measurement date), among other things, is based on exit price versus entry price, should include assumptions about risk such as nonperformance risk in liability fair values, and is a market-based measurement, not an entity-specific measurement. When considering the assumptions that market participants would use in pricing the asset or liability, this accounting standard establishes a fair value hierarchy that distinguishes between market participant assumptions based on market data obtained from sources independent of the reporting entity (observable inputs that are classified within Levels 1 and 2 of the hierarchy) and the reporting entity's own assumptions about market participant assumptions (unobservable inputs classified within Level 3 of the hierarchy). The fair value hierarchy prioritizes inputs used to measure fair value into three broad levels. Level 1 inputs Level 2 inputs Level 3 inputs In instances where the determination of the fair value measurement is based on inputs from different levels of the fair value hierarchy, the level in the fair value hierarchy within which the entire fair value measurement falls is based on the lowest level input that is significant to the fair value measurement in its entirety. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the asset or liability. The following table presents information about our assets recorded in our consolidated statements of financial condition at their fair value on a recurring basis as of June 30, 2019 and December 31, 2018, and indicates the fair value hierarchy of the valuation techniques utilized to determine such fair value. Fair Value Measurements Using June 30, 2019 Level 1 Level 2 Level 3 (In Thousands) Available-for-sale securities Mortgage-backed securities $ 38,534 $ - $ 38,534 $ - Collateralized mortgage obligations Government sponsored enterprise issued 75,864 - 75,864 - Municipal securities 54,893 - 54,893 - Other debt securities 13,571 - 13,571 - Loans held for sale 244,052 - 244,052 - Mortgage banking derivative assets 3,326 - - 3,326 Mortgage banking derivative liabilities 1,044 - - 1,044 Fair Value Measurements Using December 31, 2018 Level 1 Level 2 Level 3 (In Thousands) Available-for-sale securities Mortgage-backed securities $ 41,631 $ - $ 41,631 $ - Collateralized mortgage obligations Government sponsored enterprise issued 74,955 - 74,955 - Municipal securities 55,948 - 55,948 - Other debt securities 13,186 - 13,186 - Loans held for sale 141,616 - 141,616 - Mortgage banking derivative assets 2,014 - - 2,014 Mortgage banking derivative liabilities 1,116 - - 1,116 The following summarizes the valuation techniques for assets recorded in our consolidated statements of financial condition at their fair value on a recurring basis: Available-for-sale securities – The Company’s investment securities classified as available for sale include: mortgage-backed securities, collateralized mortgage obligations, government sponsored enterprise bonds, municipal securities and other debt securities. The fair value of mortgage-backed securities, collateralized mortgage obligations and government sponsored enterprise bonds are determined by a third party valuation source using observable market data utilizing a matrix or multi-dimensional relational pricing model. Standard inputs to these models include observable market data such as benchmark yields, reported trades, broker quotes, issuer spreads, benchmark securities, prepayment models and bid/offer market data. For securities with an early redemption feature, an option adjusted spread model is utilized to adjust the issuer spread. These model and matrix measurements are classified as Level 2 in the fair value hierarchy. The fair value of municipal and other debt securities is determined by a third party valuation source using observable market data utilizing a multi-dimensional relational pricing model. Standard inputs to this model include observable market data such as benchmark yields, reported trades, broker quotes, rating updates and issuer spreads. These model measurements are classified as Level 2 in the fair value hierarchy. The change in fair value is recorded through an adjustment to the statement of comprehensive income. Loans held for sale – The Company carries loans held for sale at fair value under the fair value option model. Fair value is generally determined by estimating a gross premium or discount, which is derived from pricing currently observable in the secondary market, principally from observable prices for forward sale commitments. Loans held-for-sale are considered to be Level 2 in the fair value hierarchy of valuation techniques. The change in fair value is recorded through an adjustment to the statement of income. Mortgage banking derivatives - Mortgage banking derivatives include interest rate lock commitments to originate residential loans held for sale to individual customers and forward commitments to sell residential mortgage loans to various investors. The Company utilizes a valuation model to estimate the fair value of its interest rate lock commitments to originate residential mortgage loans held for sale, which includes applying a pull through rate based upon historical experience and the current interest rate environment and then multiplying by quoted investor prices. The Company also utilizes a valuation model to estimate the fair value of its forward commitments to sell residential loans, which includes matching specific terms and maturities of the forward commitments against applicable investor pricing available. While there are Level 2 and 3 inputs used in the valuation models, the Company has determined that one or more of the inputs significant in the valuation of both of the mortgage banking derivatives fall within Level 3 of the fair value hierarchy. The change in fair value is recorded through an adjustment to the statement of income. The table below presents reconciliation for all assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) during 2019 and 2018. Six months ended June 30, 2019 2018 (In Thousands) Mortgage derivative, net balance at the beginning of the period $ 898 2004 Mortgage derivative gain, net 1,384 719 Mortgage derivative, net balance at the end of the period $ 2,282 2,723 There were no transfers in or out of Level 1, 2 or 3 measurements during the periods. Assets Recorded at Fair Value on a Non-recurring Basis The following tables present information about our assets recorded in our consolidated statements of financial condition at their fair value on a non-recurring basis as of June 30, 2019 and December 31, 2018, and indicate the fair value hierarchy of the valuation techniques utilized to determine such fair value. Fair Value Measurements Using June 30, 2019 Level 1 Level 2 Level 3 (In Thousands) Impaired loans, net (1) $ 598 $ - $ - $ 598 Real estate owned 1,684 - - 1,684 Impaired mortgage servicing rights 159 - - 159 Fair Value Measurements Using December 31, 2018 Level 1 Level 2 Level 3 (In Thousands) Impaired loans, net (1) $ 2,876 $ - $ - $ 2,876 Real estate owned 2,152 - - 2,152 (1) Represents collateral-dependent impaired loans, net, which are included in loans. A description of the valuation methodologies used for instruments measured at fair value, as well as the general classification of such instruments pursuant to the valuation hierarchy, is set forth below. Fair value information about financial instruments follows, whether or not recognized in the consolidated statements of financial condition, for which it is practicable to estimate that value. In cases where quoted market prices are not available, fair values are based on estimates using present value or other valuation techniques. Those techniques are significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. In that regard, the derived fair value estimates cannot be substantiated by comparison to independent markets and, in many cases, could not be realized in immediate settlement of the instrument. Certain financial instruments and all nonfinancial instruments are excluded from its disclosure requirements. Accordingly, the aggregate fair value amounts presented do not represent the underlying value of the Company. The carrying amounts and fair values of the Company’s financial instruments consist of the following: June 30, 2019 December 31, 2018 Carrying amount Fair Value Carrying amount Fair Value Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 (In Thousands) Financial Assets Cash and cash equivalents $ 70,145 $ 70,145 $ 60,870 $ 9,275 $ - $ 86,101 $ 86,101 $ 73,601 $ 12,500 $ - Securities available-for-sale 182,862 182,862 - 182,862 - 185,720 185,720 - 185,720 - Loans held for sale 244,052 244,052 - 244,052 - 141,616 141,616 - 141,616 - Loans receivable 1,370,727 1,326,449 - - 1,326,449 1,379,148 1,311,633 - - 1,311,633 FHLB stock 22,275 22,275 - 22,275 - 19,350 19,350 - 19,350 - Accrued interest receivable 5,596 5,596 5,596 - - 5,337 5,337 5,337 - - Mortgage servicing rights 175 186 - - 186 109 109 - - 109 Mortgage banking derivative assets 3,326 3,326 - - 3,326 2,014 2,014 - - 2,014 Financial Liabilities Deposits 1,054,996 1,055,534 309,345 746,189 - 1,038,495 1,038,544 302,622 735,922 - Advance payments by borrowers for taxes 18,852 18,852 18,852 - - 4,371 4,371 4,371 - - Borrowings 518,681 519,789 - 519,789 - 435,046 432,269 - 432,269 - Accrued interest payable 1,531 1,531 1,531 - - 1,395 1,395 1,395 - - Mortgage banking derivative liabilities 1,044 1,044 - - 1,044 1,116 1,116 - - 1,116 The following methods and assumptions were used by the Company in determining its fair value disclosures for financial instruments. Cash and Cash Equivalents The carrying amount reported in the consolidated statements of financial condition for cash and cash equivalents is a reasonable estimate of fair value. Securities The fair value of securities is generally determined by a third party valuation source using observable market data utilizing a matrix or multi-dimensional relational pricing model. Standard inputs to these models include observable market data such as benchmark yields, reported trades, broker quotes, issuer spreads, benchmark securities and bid/offer market data. For securities with an early redemption feature, an option adjusted spread model is utilized to adjust the issuer spread. Prepayment models are used for mortgage related securities with prepayment features. Loans Held for Sale Fair value is estimated using the prices of the Company’s existing commitments to sell such loans and/or the quoted market price for commitments to sell similar loans. Loans Receivable The fair value estimation process for the loan portfolio uses an exit price concept and reflects discounts the Company believes are consistent with discounts in the market place. Fair values are estimated for portfolios of loans with similar characteristics. Loans are segregated by type such as one- to four-family, multi-family, home equity, construction and land, commercial real estate, commercial, and other consumer. The fair value of loans is estimated by discounting the future cash flows using the current rates at which similar loans would be made to borrowers with similar credit ratings and for similar maturities. The fair value analysis also includes other assumptions to estimate fair value, intended to approximate those a market participant would use in an orderly transaction, with adjustments for discount rates, interest rates, liquidity, and credit spreads, as appropriate. FHLB Stock For FHLB stock, the carrying amount is the amount at which shares can be redeemed with the FHLB and is a reasonable estimate of fair value. Deposits and Advance Payments by Borrowers for Taxes The fair values for interest-bearing and noninterest-bearing negotiable order of withdrawal accounts, savings accounts, and money market accounts are, by definition, equal to the amount payable on demand at the reporting date (i.e., their carrying amounts). The fair values for fixed-rate certificates of deposit are estimated using a discounted cash flow calculation that applies interest rates currently being offered on certificates of similar remaining maturities to a schedule of aggregated expected monthly maturities of the outstanding certificates of deposit. The advance payments by borrowers for taxes are equal to their carrying amounts at the reporting date. Borrowings Fair values for borrowings are estimated using a discounted cash flow calculation that applies current interest rates to estimated future cash flows of the borrowings. Accrued Interest Payable and Accrued Interest Receivable For accrued interest payable and accrued interest receivable, the carrying amount is a reasonable estimate of fair value. Commitments to Extend Credit and Standby Letters of Credit Commitments to extend credit and standby letters of credit are generally not marketable. Furthermore, interest rates on any amounts drawn under such commitments would be generally established at market rates at the time of the draw. Fair values for the Company’s commitments to extend credit and standby letters of credit are based on fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements, the counterparty’s credit standing, and discounted cash flow analyses. The fair value of the Company’s commitments to extend credit was not material at June 30, 2019 and December 31, 2018. Mortgage Banking Derivative Assets and Liabilities Mortgage banking derivatives include interest rate lock commitments to originate residential loans held for sale to individual customers and forward commitments to sell residential mortgage loans to various investors. The Company relies on a valuation model to estimate the fair value of its interest rate lock commitments to originate residential mortgage loans held for sale, which includes applying a pull through rate based upon historical experience and the current interest rate environment, and then multiplying by quoted investor prices. The Company also relies on a valuation model to estimate the fair value of its forward commitments to sell residential loans, which includes matching specific terms and maturities of the forward commitments against applicable investor pricing available. On the Company’s consolidated statements of financial condition, instruments that have a positive fair value are included in prepaid expenses and other assets, and those instruments that have a negative fair value are included in other liabilities.

Segment Reporting

Segment Reporting	6 Months Ended
	Jun. 30, 2019
Segment Reporting [Abstract]
Segment Reporting	Note 15 – Segment Reporting Selected financial and descriptive information is required to be provided about reportable operating segments, considering a "management approach" concept as the basis for identifying reportable segments. The management approach is based on the way that management organizes the segments within the enterprise for making operating decisions, allocating resources, and assessing performance. Consequently, the segments are evident from the structure of the enterprise's internal organization, focusing on financial information that an enterprise's chief operating decision-makers use to make decisions about the enterprise's operating matters. The Company has determined that it has two reportable segments: community banking and mortgage banking. The Company's operating segments are presented based on its management structure and management accounting practices. The structure and practices are specific to the Company and therefore, the financial results of the Company's business segments are not necessarily comparable with similar information for other financial institutions. Community Banking The community banking segment provides consumer and business banking products and services to customers primarily within Southeastern Wisconsin along with a loan production office in Minneapolis, Minnesota. Within this segment, the following products and services are provided: (1) lending solutions such as residential mortgages, home equity loans and lines of credit, personal and installment loans, real estate financing, business loans, and business lines of credit; (2) deposit and transactional solutions such as checking, credit, debit and pre-paid cards, online banking and bill pay, and money transfer services; (3) investable funds solutions such as savings, money market deposit accounts, IRA accounts, certificates of deposit, and (4) fixed and variable annuities, insurance as well as trust and investment management accounts. Consumer products include loan and deposit products: mortgage, home equity loans and lines, personal term loans, demand deposit accounts, interest bearing transaction accounts and time deposits. Consumer products also include personal investment services. Business banking products include secured and unsecured lines and term loans for working capital, inventory and general corporate use, commercial real estate construction loans, demand deposit accounts, interest bearing transaction accounts and time deposits. Mortgage Banking The mortgage banking segment provides residential mortgage loans for the primary purpose of sale on the secondary market. Mortgage banking products and services are provided by offices in 24 states with the ability to lend in 47 states. As of or for the three months ended June 30, 2019 Community Banking Mortgage Banking Holding Company and Other Consolidated (In Thousands) Net interest income (loss) $ 13,530 $ (529 ) $ (20 ) $ 12,981 Provision for loan losses - 30 - 30 Net interest income (loss) after provision for loan losses 13,530 (559 ) (20 ) 12,951 Noninterest income 1,079 34,364 (253 ) 35,190 Noninterest expenses: Compensation, payroll taxes, and other employee benefits 4,671 22,579 (176 ) 27,074 Occupancy, office furniture and equipment 944 1,736 - 2,680 Advertising 220 743 - 963 Data processing 493 372 4 869 Communications 93 260 - 353 Professional fees 160 620 9 789 Real estate owned 19 - - 19 Loan processing expense - 879 - 879 Other 635 1,186 (92 ) 1,729 Total noninterest expenses 7,235 28,375 (255 ) 35,355 Income (loss) before income taxes 7,374 5,430 (18 ) 12,786 Income tax expense 1,594 1,545 4 3,143 Net income (loss) $ 5,780 $ 3,885 $ (22 ) $ 9,643 Total assets $ 1,958,339 $ 290,977 $ (234,178 ) $ 2,015,138 As of or for the three months ended June 30, 2018 Community Banking Mortgage Banking Holding Company and Other Consolidated (In Thousands) Net interest income (loss) $ 13,747 $ (40 ) $ 13 $ 13,720 Provision for loan losses (250 ) 30 - (220 ) Net interest income (loss) after provision for loan losses 13,997 (70 ) 13 13,940 Noninterest income 1,137 32,547 (366 ) 33,318 Noninterest expenses: Compensation, payroll taxes, and other employee benefits 4,301 22,078 (145 ) 26,234 Occupancy, office furniture and equipment 813 1,792 - 2,605 Advertising 241 759 - 1,000 Data processing 400 224 (1 ) 623 Communications 121 314 - 435 Professional fees 180 458 9 647 Real estate owned (126 ) - - (126 ) Loan processing expense - 904 - 904 Other 658 1,964 (207 ) 2,415 Total noninterest expenses 6,588 28,493 (344 ) 34,737 Income (loss) before income taxes 8,546 3,984 (9 ) 12,521 Income tax expense (benefit) 1,970 1,133 (2 ) 3,101 Net income (loss) $ 6,576 $ 2,851 $ (7 ) $ 9,420 Total assets $ 1,878,299 $ 179,546 $ (180,615 ) $ 1,877,230 As of or for the six months ended June 30, 2019 Community Banking Mortgage Banking Holding Company and Other Consolidated (In Thousands) Net interest income $ 26,662 $ (737 ) $ (8 ) $ 25,917 Provision for loan losses (700 ) 50 - (650 ) Net interest income (loss) after provision for loan losses 27,362 (787 ) (8 ) 26,567 Noninterest income 1,960 57,935 (448 ) 59,447 Noninterest expenses: Compensation, payroll taxes, and other employee benefits 9,427 38,639 (353 ) 47,713 Occupancy, office furniture and equipment 1,916 3,540 - 5,456 Advertising 401 1,520 - 1,921 Data processing 950 680 8 1,638 Communications 175 506 - 681 Professional fees 428 1,046 10 1,484 Real estate owned 51 - - 51 Loan processing expense - 1,684 - 1,684 Other 1,124 3,098 (146 ) 4,076 Total noninterest expenses 14,472 50,713 (481 ) 64,704 Income before income taxes 14,850 6,435 25 21,310 Income tax expense 3,281 1,831 13 5,125 Net income $ 11,569 $ 4,604 $ 12 $ 16,185 As of or for the six months ended June 30, 2018 Community Banking Mortgage Banking Holding Company and Other Consolidated (In Thousands) Net interest income $ 27,051 $ (232 ) $ 42 $ 26,861 Provision for loan losses (1,150 ) 50 - (1,100 ) Net interest income after provision for loan losses 28,201 (282 ) 42 27,961 Noninterest income 2,076 57,278 (853 ) 58,501 Noninterest expenses: Compensation, payroll taxes, and other employee benefits 9,189 38,319 (291 ) 47,217 Occupancy, office furniture and equipment 1,639 3,605 - 5,244 Advertising 381 1,479 - 1,860 Data processing 835 410 3 1,248 Communications 221 596 - 817 Profeessional fees 371 972 4 1,347 Real estate owned 191 - - 191 Loan processing expense - 1,892 - 1,892 Other 1,443 4,161 (536 ) 5,068 Total noninterest expenses 14,270 51,434 (820 ) 64,884 Income before income taxes 16,007 5,562 9 21,578 Income tax expense (benefit) 3,638 1,568 (1 ) 5,205 Net income $ 12,369 $ 3,994 $ 10 $ 16,373

Leases

Leases	6 Months Ended
	Jun. 30, 2019
Leases [Abstract]
Leases	Note 16 – Leases The Company has entered into operating lease agreements for two of its community banking branch locations, all of its mortgage banking office locations, and some of its office equipment. The leases have fixed terms defined regarding the payments and length. The Company elected not to include short-term leases (i.e., leases with initial terms of twelve months or less), or equipment leases (deemed immaterial) on the consolidated statements of financial condition. Some of the leases included options to extend the leases. These options are reviewed and factored into the length of the lease if the option is expected to be extended. Leases did not contain an implicit rate; therefore, the Company used the incremental borrowing rates for the discount rate. There were no sale and leaseback transactions, leveraged leases, or lease transactions with related parties during the six months ended June 30, 2019. At June 30, 2019, the Company had lease liabilities totaling $9.6 million and right-of-use assets totaling $9.1 million related to these leases. Lease liabilities and right-of-use assets are reflected in other liabilities and other assets, respectively, on the consolidated statements of financial condition. The cost components of our operating leases were as follows for the three and six months ended June 30, 2019: Three months ended June 30, 2019 Six months ended June 30, 2019 (In Thousands) Operating lease cost 804 $ 1562 Variable cost 156 416 Short-term lease cost 294 527 Total 1,254 $ 2,505 At June 30, 2019, the Company had leases that had not yet commenced, but will create approximately $28,000 of additional lease liabilities and right-of-use assets for the Company in the fourth quarter of 2019. The table below summarizes other information related to our operating leases: Six months ended June 30, 2019 (Dollars in Thousands) Cash paid for amounts included in the measurement of lease liabilities Operating cash flows from operating leases $ 1,708 Initial recognition of right of use asset 10,490 Initial recognition of lease liabilities 10,979 Weighted average remaining lease term - operating leases, in years 3.4 Weighted average discount rate - operating leases 5.7 % As of June 30, 2019, lease liability information for the Company is summarized in the following table. Maturity analysis Operating leases (In Thousands) One year or less $ 3,264 More than one year through two years 2,712 More than two years through three years 1,812 More than three years through four years 1,406 More than four years through five years 881 More than five years 992 Total lease payments 11,067 Present value discount (1,452 ) Lease liability $ 9,615

Basis of Presentation (Policies

Basis of Presentation (Policies)	6 Months Ended
	Jun. 30, 2019
Basis of Presentation [Abstract]
Basis of presentation	The accompanying unaudited consolidated financial statements have been prepared in accordance with generally accepted accounting principles (“GAAP”) for interim financial information, Rule 10-01 of Regulation S-X and the instructions to Form 10-Q. The financial statements do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, the accompanying unaudited consolidated financial statements contain all adjustments (consisting of normal recurring accruals) necessary to present fairly the financial position, results of operations, changes in shareholders’ equity, and cash flows of the Company for the periods presented.
Use of estimates	The preparation of the unaudited consolidated financial statements requires management of the Company to make a number of estimates and assumptions relating to the reported amount of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the period. Significant items subject to such estimates and assumptions include the allowance for loan losses, deferred income taxes and real estate owned. Actual results could differ from those estimates. Certain prior period amounts have been reclassified to conform to current period presentation. These reclassifications did not result in any changes to previously reported net income or shareholders' equity. Impact of Recent Accounting Pronouncements Accounting Standards Codification ("ASC") Topic 606 "Revenue from Contracts with Customers." Revenue Recognition The Company recognizes revenue as it is earned and noted no impact to its revenue recognition policies as a result of the adoption of ASC 606. The following is a discussion of revenues within the scope of the new revenue guidance: ● Debit and credit card interchange fee income ● Service charges on deposit accounts ● Service charges on loan accounts ASC Topic 842 "Leases." ASC Topic 326 "Financial Instruments - Credit Losses." ASC Topic 310 "Receivables - Nonrefundable Fees and Other Costs."
Impact of Recent Accounting Pronouncements	The preparation of the unaudited consolidated financial statements requires management of the Company to make a number of estimates and assumptions relating to the reported amount of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the period. Significant items subject to such estimates and assumptions include the allowance for loan losses, deferred income taxes and real estate owned. Actual results could differ from those estimates. Certain prior period amounts have been reclassified to conform to current period presentation. These reclassifications did not result in any changes to previously reported net income or shareholders' equity. Impact of Recent Accounting Pronouncements Accounting Standards Codification ("ASC") Topic 606 "Revenue from Contracts with Customers." Revenue Recognition The Company recognizes revenue as it is earned and noted no impact to its revenue recognition policies as a result of the adoption of ASC 606. The following is a discussion of revenues within the scope of the new revenue guidance: ● Debit and credit card interchange fee income ● Service charges on deposit accounts ● Service charges on loan accounts ASC Topic 842 "Leases." ASC Topic 326 "Financial Instruments - Credit Losses." ASC Topic 310 "Receivables - Nonrefundable Fees and Other Costs."
Revenue Recognition	The preparation of the unaudited consolidated financial statements requires management of the Company to make a number of estimates and assumptions relating to the reported amount of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the period. Significant items subject to such estimates and assumptions include the allowance for loan losses, deferred income taxes and real estate owned. Actual results could differ from those estimates. Certain prior period amounts have been reclassified to conform to current period presentation. These reclassifications did not result in any changes to previously reported net income or shareholders' equity. Impact of Recent Accounting Pronouncements Accounting Standards Codification ("ASC") Topic 606 "Revenue from Contracts with Customers." Revenue Recognition The Company recognizes revenue as it is earned and noted no impact to its revenue recognition policies as a result of the adoption of ASC 606. The following is a discussion of revenues within the scope of the new revenue guidance: ● Debit and credit card interchange fee income ● Service charges on deposit accounts ● Service charges on loan accounts ASC Topic 842 "Leases." ASC Topic 326 "Financial Instruments - Credit Losses." ASC Topic 310 "Receivables - Nonrefundable Fees and Other Costs."
Leases	The preparation of the unaudited consolidated financial statements requires management of the Company to make a number of estimates and assumptions relating to the reported amount of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the period. Significant items subject to such estimates and assumptions include the allowance for loan losses, deferred income taxes and real estate owned. Actual results could differ from those estimates. Certain prior period amounts have been reclassified to conform to current period presentation. These reclassifications did not result in any changes to previously reported net income or shareholders' equity. Impact of Recent Accounting Pronouncements Accounting Standards Codification ("ASC") Topic 606 "Revenue from Contracts with Customers." Revenue Recognition The Company recognizes revenue as it is earned and noted no impact to its revenue recognition policies as a result of the adoption of ASC 606. The following is a discussion of revenues within the scope of the new revenue guidance: ● Debit and credit card interchange fee income ● Service charges on deposit accounts ● Service charges on loan accounts ASC Topic 842 "Leases." ASC Topic 326 "Financial Instruments - Credit Losses." ASC Topic 310 "Receivables - Nonrefundable Fees and Other Costs."
Financial Instruments	The preparation of the unaudited consolidated financial statements requires management of the Company to make a number of estimates and assumptions relating to the reported amount of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the period. Significant items subject to such estimates and assumptions include the allowance for loan losses, deferred income taxes and real estate owned. Actual results could differ from those estimates. Certain prior period amounts have been reclassified to conform to current period presentation. These reclassifications did not result in any changes to previously reported net income or shareholders' equity. Impact of Recent Accounting Pronouncements Accounting Standards Codification ("ASC") Topic 606 "Revenue from Contracts with Customers." Revenue Recognition The Company recognizes revenue as it is earned and noted no impact to its revenue recognition policies as a result of the adoption of ASC 606. The following is a discussion of revenues within the scope of the new revenue guidance: ● Debit and credit card interchange fee income ● Service charges on deposit accounts ● Service charges on loan accounts ASC Topic 842 "Leases." ASC Topic 326 "Financial Instruments - Credit Losses." ASC Topic 310 "Receivables - Nonrefundable Fees and Other Costs."
Receivables	The preparation of the unaudited consolidated financial statements requires management of the Company to make a number of estimates and assumptions relating to the reported amount of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the period. Significant items subject to such estimates and assumptions include the allowance for loan losses, deferred income taxes and real estate owned. Actual results could differ from those estimates. Certain prior period amounts have been reclassified to conform to current period presentation. These reclassifications did not result in any changes to previously reported net income or shareholders' equity. Impact of Recent Accounting Pronouncements Accounting Standards Codification ("ASC") Topic 606 "Revenue from Contracts with Customers." Revenue Recognition The Company recognizes revenue as it is earned and noted no impact to its revenue recognition policies as a result of the adoption of ASC 606. The following is a discussion of revenues within the scope of the new revenue guidance: ● Debit and credit card interchange fee income ● Service charges on deposit accounts ● Service charges on loan accounts ASC Topic 842 "Leases." ASC Topic 326 "Financial Instruments - Credit Losses." ASC Topic 310 "Receivables - Nonrefundable Fees and Other Costs."

Securities Available for Sale (

Securities Available for Sale (Policies)	6 Months Ended
	Jun. 30, 2019
Securities Available for Sale [Abstract]
Impairment of investment securities	The Company reviews the investment securities portfolio on a quarterly basis to monitor its exposure to other-than-temporary impairment. In evaluating whether a security’s decline in market value is other-than-temporary, management considers the length of time and extent to which the fair value has been less than cost, the financial condition of the issuer and the underlying obligors, quality of credit enhancements, volatility of the fair value of the security, the expected recovery period of the security and ratings agency evaluations. In addition, the Company may also evaluate payment structure, whether there are defaulted payments or expected defaults, prepayment speeds and the value of any underlying collateral.

Derivative Financial Instrume_2

Derivative Financial Instruments (Policies)	6 Months Ended
	Jun. 30, 2019
Derivative Financial Instruments [Abstract]
Derivative financial instruments	In connection with its mortgage banking activities, the Company enters into derivative financial instruments as part of its strategy to manage its exposure to changes in interest rates. Mortgage banking derivatives include interest rate lock commitments provided to customers to fund mortgage loans to be sold in the secondary market and forward commitments for the future delivery of such loans to third party investors. It is the Company’s practice to enter into forward commitments for the future delivery of residential mortgage loans when interest rate lock commitments are entered into in order to economically hedge the effect of future changes in interest rates on its commitments to fund the loans as well as on its portfolio of mortgage loans held for sale. The Company’s mortgage banking derivatives have not been designated as hedge relationships. These instruments are used to manage the Company’s exposure to interest rate movements and other identified risks but do not meet the strict hedge accounting requirements of ASC 815. Changes in the fair value of derivatives not designated in hedging relationships are recorded as a component of mortgage banking income in the Company’s consolidated statements of operations. The Company does not use derivatives for speculative purposes. Forward commitments to sell mortgage loans represent commitments obtained by the Company from a secondary market agency to purchase mortgages from the Company at specified interest rates and within specified periods of time. Commitments to sell loans are made to mitigate interest rate risk on interest rate lock commitments to originate loans and loans held for sale. At June 30, 2019, the Company had forward commitments to sell mortgage loans with an aggregate notional amount of approximately $481.0 million and interest rate lock commitments with an aggregate notional amount of approximately $277.4 million. The fair value of the forward commitments to sell mortgage loans at June 30, 2019 included a loss of $1.0 million that is reported as a component of other liabilities on the Company's consolidated statement of financial condition. The fair value of the interest rate locks at June 30, 2019 included a gain of $3.3 million that is reported as a component of other assets on the Company's consolidated statements of financial condition. At December 31, 2018, the Company had forward commitments to sell mortgage loans with an aggregate notional amount of $276.3 million and interest rate lock commitments with an aggregate notional amount of approximately $164.9 million. The fair value of the forward commitments to sell mortgage loans at December 31, 2018 included a loss of $1.1 million that is reported as a component of other liabilities on the Company's consolidated statement of financial condition. The fair value of the interest rate locks at December 31, 2018 included a gain of $2.0 million that is reported as a component of other assets on the Company's consolidated statements of financial condition. In determining the fair value of its derivative loan commitments, the Company considers the value that would be generated by the loan arising from exercise of the loan commitment when sold in the secondary mortgage market. That value includes the price that the loan is expected to be sold for in the secondary mortgage market. The fair value of these commitments is recorded on the consolidated statements of financial condition with the changes in fair value recorded as a component of mortgage banking income. The significant unobservable input used in the fair value measurement of the Company's mortgage banking derivatives, including interest rate lock commitments, is the loan pull through rate. This represents the percentage of loans currently in a lock position which the Company estimates will ultimately close. Generally, the fair value of an interest rate lock commitment will be positively (negatively) impacted when the prevailing interest rate is lower (higher) than the interest rate lock commitment. Generally, an increase in the pull through rate will result in the fair value of the interest rate lock increasing when in a gain position, or decreasing when in a loss position. The pull through rate is largely dependent on the loan processing stage that a loan is currently in and the change in prevailing interest rates from the time of the rate lock. The pull through rate is computed using historical data and the ratio is periodically reviewed by the Company. Residential mortgage loans sold to others are predominantly conventional residential first lien mortgages. The Company’s agreements to sell residential mortgage loans in the normal course of business usually require certain representations and warranties on the underlying loans sold related to credit information, loan documentation and collateral, which if subsequently are untrue or breached, could require the Company to repurchase certain loans affected. The Company has only been required to make insignificant repurchases as a result of breaches of these representations and warranties. The Company’s agreements to sell residential mortgage loans also contain limited recourse provisions. The recourse provisions are limited in that the recourse provision ends after certain payment criteria have been met. With respect to these loans, repurchase could be required if defined delinquency issues arose during the limited recourse period. Given that the underlying loans delivered to buyers are predominantly conventional first lien mortgages and that historical experience shows negligible losses and insignificant repurchase activity, management believes that losses and repurchases under the limited recourse provisions will continue to be insignificant.

Securities Available for Sale_2

Securities Available for Sale (Tables)	6 Months Ended
	Jun. 30, 2019
Securities Available for Sale [Abstract]
Amortized Cost and Fair Values of Investment in Securities Available for Sale	The amortized cost and fair values of the Company’s investment in securities available for sale follow: June 30, 2019 Amortized cost Gross unrealized gains Gross unrealized losses Fair value (In Thousands) Mortgage-backed securities $ 38,250 $ 329 $ (45 ) $ 38,534 Collateralized mortgage obligations: Government sponsored enterprise issued 74,749 1,272 (157 ) 75,864 Mortgage-related securities 112,999 1,601 (202 ) 114,398 Municipal securities 53,270 1,624 (1 ) 54,893 Other debt securities 15,002 - (1,431 ) 13,571 Debt securities 68,272 1,624 (1,432 ) 68,464 $ 181,271 $ 3,225 $ (1,634 ) $ 182,862 December 31, 2018 Amortized cost Gross unrealized gains Gross unrealized losses Fair value (In Thousands) Mortgage-backed securities $ 42,105 $ 91 $ (565 ) $ 41,631 Collateralized mortgage obligations: Government sponsored enterprise issued 75,923 243 (1,211 ) 74,955 Mortgage-related securities 118,028 334 (1,776 ) 116,586 Municipal securities 55,242 825 (119 ) 55,948 Other debt securities 15,002 - (1,816 ) 13,186 Debt securities 70,244 825 (1,935 ) 69,134 $ 188,272 $ 1,159 $ (3,711 ) $ 185,720
Amortized Cost and Fair Values of Investment Securities by Contractual Maturity	The amortized cost and fair values of investment securities by contractual maturity at June 30, 2019 are shown below. Actual maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties. Amortized Cost Fair Value (In Thousands) Debt and other securities Due within one year $ 8,312 $ 8,314 Due after one year through five years 26,204 26,587 Due after five years through ten years 23,135 24,245 Due after ten years 10,621 9,318 Mortgage-related securities 112,999 114,398 $ 181,271 $ 182,862
Total Proceeds and Gross Gains and Losses from Sales of Investment Securities Available for Sale	Gross unrealized losses on securities available for sale and the fair value of the related securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position were as follows: June 30, 2019 Less than 12 months 12 months or longer Total Fair value Unrealized loss Fair value Unrealized loss Fair value Unrealized loss (In Thousands) Mortgage-backed securities $ - $ - $ 7,405 $ (45 ) $ 7,405 $ (45 ) Collateralized mortgage obligations: Government sponsored enterprise issued - - 19,434 (157 ) 19,434 (157 ) Municipal securities - - 727 (1 ) 727 (1 ) Other debt securities - - 8,569 (1,431 ) 8,569 (1,431 ) $ - $ - $ 36,135 $ (1,634 ) $ 36,135 $ (1,634 ) December 31, 2018 Less than 12 months 12 months or longer Total Fair value Unrealized loss Fair value Unrealized loss Fair value Unrealized loss (In Thousands) Mortgage-backed securities $ 3,036 $ (9 ) $ 33,029 $ (556 ) $ 36,065 $ (565 ) Collateralized mortgage obligations: Government sponsored enterprise issued 3,079 (13 ) 47,279 (1,198 ) 50,358 (1,211 ) Municipal securities 7,595 (17 ) 11,272 (102 ) 18,867 (119 ) Other debt securities - - 13,186 (1,816 ) 13,186 (1,816 ) $ 13,710 $ (39 ) $ 104,766 $ (3,672 ) $ 118,476 $ (3,711 )

Loans Receivable (Tables)

Loans Receivable (Tables)	6 Months Ended
	Jun. 30, 2019
Loan Receivable [Abstract]
Components of Loans Receivable	Loans receivable at June 30, 2019 and December 31, 2018 are summarized as follows: June 30, 2019 December 31, 2018 (In Thousands) Mortgage loans: Residential real estate: One- to four-family $ 478,006 $ 489,979 Multi-family 592,692 597,087 Home equity 19,242 19,956 Construction and land 25,491 13,361 Commercial real estate 223,553 225,522 Consumer 662 433 Commercial loans 31,081 32,810 $ 1,370,727 $ 1,379,148 The Company provides several types of loans to its customers, including residential, construction, commercial and consumer loans. Significant loan concentrations are considered to exist for a financial institution when there are amounts loaned to one borrower or to multiple borrowers engaged in similar activities that would cause them to be similarly impacted by economic or other conditions. While the Company's credit risks are geographically concentrated in the Milwaukee metropolitan area, there are no concentrations with individual or groups of related borrowers. While the real estate collateralizing these loans is primarily residential in nature, it ranges from owner-occupied single family homes to large apartment complexes. Qualifying loans receivable totaling $1.08 billion and $1.01 billion at June 30, 2019 and December 31, 2018, respectively, are pledged as collateral against $495.0 million and $430.0 million in outstanding Federal Home Loan Bank of Chicago ("FHLB") advances under a blanket security agreement at June 30, 2019 and December 31, 2018. Certain of the Company's executive officers, directors, employees, and their related interests have loans with the Bank. Loans outstanding to such parties were approximately $5.3 million as of June 30, 2019 and December 31, 2018. None of these loans were past due or considered impaired as of June 30, 2019 or December 31, 2018. As of June 30, 2019 and December 31, 2018, there were no loans 90 or more days past due and still accruing interest.
Analysis of Past Due Loans Receivable	An analysis of past due loans receivable as of June 30, 2019 and December 31, 2018 follows: As of June 30, 2019 1-59 Days Past Due (1) 60-89 Days Past Due (2) 90 Days or Greater Total Past Due Current (3) Total Loans (In Thousands) Mortgage loans: Residential real estate: One- to four-family $ 3,517 $ 599 $ 2,884 $ 7,000 $ 471,006 $ 478,006 Multi-family - - 576 576 592,116 592,692 Home equity 169 - - 169 19,073 19,242 Construction and land - - - - 25,491 25,491 Commercial real estate 287 - 93 380 223,173 223,553 Consumer - - - - 662 662 Commercial loans 208 - 1 209 30,872 31,081 Total $ 4,181 $ 599 $ 3,554 $ 8,334 $ 1,362,393 $ 1,370,727 As of December 31, 2018 1-59 Days Past Due (1) 60-89 Days Past Due (2) 90 Days or Greater Total Past Due Current (3) Total Loans (In Thousands) Mortgage loans: Residential real estate: One- to four-family $ 1,523 $ 76 $ 3,834 $ 5,433 $ 484,546 $ 489,979 Multi-family - - 937 937 596,150 597,087 Home equity 216 42 111 369 19,587 19,956 Construction and land - - - - 13,361 13,361 Commercial real estate 39 - 125 164 225,358 225,522 Consumer 29 - - 29 404 433 Commercial loans - - 18 18 32,792 32,810 Total $ 1,807 $ 118 $ 5,025 $ 6,950 $ 1,372,198 $ 1,379,148 (1) (2) (3)
Allowance for Loan Losses	A summary of the activity for the six months ended June 30, 2019 and 2018 in the allowance for loan losses follows: One- to Four- Family Multi-Family Home Equity Construction and Land Commercial Real Estate Consumer Commercial Total (In Thousands) Six months ended June 30, 2019 Balance at beginning of period $ 5,742 $ 4,153 $ 325 $ 400 $ 2,126 $ 20 $ 483 $ 13,249 Provision (credit) for loan losses (449 ) 154 (54 ) 12 (214 ) (3 ) (96 ) (650 ) Charge-offs (25 ) (1 ) (8 ) - - (5 ) - (39 ) Recoveries 35 9 12 - 1 - - 57 Balance at end of period $ 5,303 $ 4,315 $ 275 $ 412 $ 1,913 $ 12 $ 387 $ 12,617 Six months ended June 30, 2018 Balance at beginning of period $ 5,794 $ 4,431 $ 356 $ 949 $ 1,881 $ 10 $ 656 $ 14,077 Provision (credit) for loan losses 102 (425 ) (62 ) (607 ) 87 (1 ) (194 ) (1,100 ) Charge-offs (62 ) - - - - - - (62 ) Recoveries 85 70 13 40 1 - - 209 Balance at end of period $ 5,919 $ 4,076 $ 307 $ 382 $ 1,969 $ 9 $ 462 $ 13,124
Allowance for Loan Loss for Loans Evaluated Individually and Collectively for Impairment	A summary of the allowance for loan loss for loans evaluated individually and collectively for impairment by collateral class as of June 30, 2019 follows: One- to Four- Family Multi- Family Home Equity Construction and Land Commercial Real Estate Consumer Commercial Total (In Thousands) Allowance related to loans individually evaluated for impairment $ 71 $ 80 $ 26 $ - $ 9 $ - $ - $ 186 Allowance related to loans collectively evaluated for impairment 5,232 4,235 249 412 1,904 12 387 12,431 Balance at end of period $ 5,303 $ 4,315 $ 275 $ 412 $ 1,913 $ 12 $ 387 $ 12,617 Loans individually evaluated for impairment $ 6,988 $ 1,261 $ 126 $ - $ 374 $ - $ 1 $ 8,750 Loans collectively evaluated for impairment 471,018 591,431 19,116 25,491 223,179 662 31,080 1,361,977 Total gross loans $ 478,006 $ 592,692 $ 19,242 $ 25,491 $ 223,553 $ 662 $ 31,081 $ 1,370,727 A summary of the allowance for loan loss for loans evaluated individually and collectively for impairment by collateral class as of December 31, 2018 follows: One- to Four-Family Multi- Family Home Equity Construction and Land Commercial Real Estate Consumer Commercial Total (In Thousands) Allowance related to loans individually evaluated for impairment $ 73 $ - $ 46 $ - $ 67 $ - $ - $ 186 Allowance related to loans collectively evaluated for impairment 5,669 4,153 279 400 2,059 20 483 13,063 Balance at end of period $ 5,742 $ 4,153 $ 325 $ 400 $ 2,126 $ 20 $ 483 $ 13,249 Loans individually evaluated for impairment $ 7,642 $ 1,309 $ 246 $ - $ 2,885 $ - $ 18 $ 12,100 Loans collectively evaluated for impairment 482,337 595,778 19,710 13,361 222,637 433 32,792 1,367,048 Total gross loans $ 489,979 $ 597,087 $ 19,956 $ 13,361 $ 225,522 $ 433 $ 32,810 $ 1,379,148
Internal Risk Rating of Loans Receivable	The following table presents information relating to the Company’s internal risk ratings of its loans receivable as of June 30, 2019 and December 31, 2018: One to Four- Family Multi-Family Home Equity Construction and Land Commercial Real Estate Consumer Commercial Total (In Thousands) At June 30, 2019 Substandard $ 7,376 $ 1,261 $ 320 $ - $ 918 $ - $ 875 $ 10,750 Watch 5,628 486 - - 1,442 - 608 8,164 Pass 465,002 590,945 18,922 25,491 221,193 662 29,598 1,351,813 $ 478,006 $ 592,692 $ 19,242 $ 25,491 $ 223,553 $ 662 $ 31,081 $ 1,370,727 At December 31, 2018 Substandard $ 7,799 $ 1,309 $ 246 $ - $ 678 $ - $ 889 $ 10,921 Watch 4,662 491 468 - 4,343 - 906 10,870 Pass 477,518 595,287 19,242 13,361 220,501 433 31,015 1,357,357 $ 489,979 $ 597,087 $ 19,956 $ 13,361 $ 225,522 $ 433 $ 32,810 $ 1,379,148
Impaired Loan Receivables	The following tables present data on impaired loans at June 30, 2019 and December 31, 2018. As of June 30, 2019 Recorded Investment Unpaid Principal Reserve Cumulative Charge-Offs (In Thousands) Total Impaired with Reserve One- to four-family $ 349 $ 349 $ 71 $ - Multi-family 344 344 80 - Home equity 82 82 26 - Construction and land - - - - Commercial real estate 9 418 9 409 Consumer - - - - Commercial - - - - 784 1,193 186 409 Total Impaired with no Reserve One- to four-family 6,639 7,579 - 940 Multi-family 917 1,745 - 828 Home equity 44 44 - - Construction and land - - - - Commercial real estate 365 365 - - Consumer - - - - Commercial 1 1 - - 7,966 9,734 - 1,768 Total Impaired One- to four-family 6,988 7,928 71 940 Multi-family 1,261 2,089 80 828 Home equity 126 126 26 - Construction and land - - - - Commercial real estate 374 783 9 409 Consumer - - - - Commercial 1 1 - - $ 8,750 $ 10,927 $ 186 $ 2,177 As of December 31, 2018 Recorded Investment Unpaid Principal Reserve Cumulative Charge-Offs (In Thousands) Total Impaired with Reserve One- to four-family $ 462 $ 462 $ 73 $ - Multi-family - - - - Home equity 107 107 46 - Construction and land - - - - Commercial real estate 2,493 2,902 67 409 Consumer - - - - Commercial - - - - 3,062 3,471 186 409 Total Impaired with no Reserve One- to four-family 7,180 8,120 - 940 Multi-family 1,309 2,142 - 833 Home equity 139 139 - - Construction and land - - - - Commercial real estate 392 392 - - Consumer - - - - Commercial 18 18 - - 9,038 10,811 - 1,773 Total Impaired One- to four-family 7,642 8,582 73 940 Multi-family 1,309 2,142 - 833 Home equity 246 246 46 - Construction and land - - - - Commercial real estate 2,885 3,294 67 409 Consumer - - - - Commercial 18 18 - - $ 12,100 $ 14,282 $ 186 $ 2,182 The difference between a loan’s recorded investment and the unpaid principal balance represents a partial charge-off resulting from a confirmed loss when the value of the collateral securing the loan is below the loan balance and management’s assessment that the full collection of the loan balance is not likely. The following tables present data on impaired loans for the six months ended June 30, 2019 and 2018. Six months ended June 30, 2019 2018 Average Recorded Investment Interest Paid Average Recorded Investment Interest Paid (In Thousands) Total Impaired with Reserve One- to four-family $ 353 11 444 15 Multi-family 348 16 - - Home equity 85 5 80 3 Construction and land - - - - Commercial real estate 13 - 30 - Consumer - - - - Commercial - - - - 799 32 554 18 Total Impaired with no Reserve One- to four-family 6,727 213 7,307 193 Multi-family 935 41 791 26 Home equity 46 2 146 2 Construction and land - - - - Commercial real estate 380 9 438 7 Consumer - - - - Commercial 11 1 26 - 8,099 266 8,708 228 Total Impaired One- to four-family 7,080 224 7,751 208 Multi-family 1,283 57 791 26 Home equity 131 7 226 5 Construction and land - - - - Commercial real estate 393 9 468 7 Consumer - - - - Commercial 11 1 26 - $ 8,898 298 9,262 246
Troubled Debt Restructurings on Loan Receivables	The following presents data on troubled debt restructurings: As of June 30, 2019 Accruing Non-accruing Total Amount Number Amount Number Amount Number (Dollars in Thousands) One- to four-family $ 2,740 2 $ 769 5 $ 3,509 7 Multi-family - - 341 2 341 2 Commercial real estate 281 1 9 1 290 2 $ 3,021 3 $ 1,119 8 $ 4,140 11 As of December 31, 2018 Accruing Non-accruing Total Amount Number Amount Number Amount Number (Dollars in Thousands) One- to four-family $ 2,740 2 $ 844 5 $ 3,584 7 Multi-family - - 372 2 372 2 Commercial real estate 2,759 2 17 1 2,776 3 $ 5,499 4 $ 1,233 8 $ 6,732 12
Troubled Debt Restructurings by Concession Type	The following presents troubled debt restructurings by concession type: As of June 30, 2019 Performing in accordance with modified terms In Default Total Amount Number Amount Number Amount Number (Dollars in Thousands) Interest reduction and principal forbearance $ 3,316 6 $ 494 2 $ 3,810 8 Interest reduction 330 3 - - 330 3 $ 3,646 9 $ 494 2 $ 4,140 11 As of December 31, 2018 Performing in accordance with modified terms In Default Total Amount Number Amount Number Amount Number (Dollars in Thousands) Interest reduction and principal forbearance $ 5,848 7 $ 546 2 $ 6,394 9 Interest reduction 338 3 - - 338 3 $ 6,186 10 $ 546 2 $ 6,732 12 There were no loans modified as troubled debt restructurings during the three or six months ended June 30, 2019 and June 30, 2018. There were no troubled debt restructurings within the past twelve months for which there was a default during the three or six months ended June 30, 2019 and June 30, 2018.
Loans Receivables, Non Accrual Status	The following table presents data on non-accrual loans as of June 30, 2019 and December 31, 2018: June 30, 2019 December 31, 2018 (Dollars in Thousands) Non-accrual loans: Residential real estate: One- to four-family $ 4,249 $ 4,902 Multi-family 1,261 1,309 Home equity 81 201 Construction and land - - Commercial real estate 93 125 Commercial 1 18 Consumer - - Total non-accrual loans $ 5,685 $ 6,555 Total non-accrual loans to total loans receivable 0.41 % 0.48 % Total non-accrual loans to total assets 0.28 % 0.34 %

Real Estate Owned (Tables)

Real Estate Owned (Tables)	6 Months Ended
	Jun. 30, 2019
Real Estate Owned [Abstract]
Real Estate Owned	Note 4— Real Estate Owned Real estate owned is summarized as follows: June 30, 2019 December 31, 2018 (In Thousands) One- to four-family $ 250 $ 163 Multi-family - - Construction and land 2,714 3,327 Commercial real estate - 300 Total real estate owned 2,964 3,790 Valuation allowance at end of period (1,280 ) (1,638 ) Total real estate owned, net $ 1,684 $ 2,152 The following table presents the activity in the Company’s real estate owned: Six months ended June 30, 2019 2018 (In Thousands) Real estate owned at beginning of the period $ 2,152 4,558 Transferred from loans receivable 743 318 Sales (net of gains / losses) (1,201 ) (2,197 ) Write downs - (301 ) Other (10 ) - Real estate owned at the end of the period $ 1,684 2,378 Residential one- to four-family mortgage loans that were in the process of foreclosure were $2.3 million and $2.2 million at June 30, 2019 and December 31, 2018, respectively.

Mortgage Servicing Rights (Tabl

Mortgage Servicing Rights (Tables)	6 Months Ended
	Jun. 30, 2019
Mortgage Servicing Rights [Abstract]
Mortgage Servicing Rights Activity	The following table presents the activity in the Company’s mortgage servicing rights: Six months ended June 30, 2019 2018 (In Thousands) Mortgage servicing rights at beginning of the period $ 109 $ 888 Additions 175 244 Amortization (29 ) (89 ) Sales - - Mortgage servicing rights at end of the period 255 1,043 Valuation allowance at end of period (80 ) - Mortgage servicing rights at end of the period, net $ 175 $ 1,043
Estimated Amortization Expense of Mortgage Servicing Rights	The following table shows the estimated future amortization expense for mortgage servicing rights for the periods indicated: Estimate for the period ending December 31: (In Thousands) 2019 $ 20 2020 34 2021 30 2022 27 2023 23 Thereafter 41 Total $ 175

Deposits (Tables)

Deposits (Tables)	6 Months Ended
	Jun. 30, 2019
Deposits [Abstract]
Contractual Maturities of Time Deposits	At June 30, 2019 and December 31, 2018, time deposits with balances greater than $250,000 amounted to $69.7 million and $60.1 million, respectively. A summary of the contractual maturities of time deposits at June 30, 2019 is as follows: (In Thousands) Within one year $ 538,390 More than one to two years 202,785 More than two to three years 1,459 More than three to four years 2,110 More than four through five years 907 $ 745,651

Borrowings (Tables)

Borrowings (Tables)	6 Months Ended
	Jun. 30, 2019
Borrowings [Abstract]
Borrowings	Borrowings consist of the following: June 30, 2019 December 31, 2018 Balance Weighted Average Rate Balance Weighted Average Rate (Dollars in Thousands) Short term: Repurchase agreement $ 23,681 5.28 % $ 5,046 5.39 % Long term: Federal Home Loan Bank, Chicago advances maturing: 2027 75,000 1.56 % 175,000 1.38 % 2028 255,000 2.37 % 255,000 2.37 % 2029 165,000 1.61 % - - $ 518,681 2.14 % $ 435,046 2.01 %

Regulatory Capital (Tables)

Regulatory Capital (Tables)	6 Months Ended
	Jun. 30, 2019
Regulatory Capital [Abstract]
Actual and Required Capital Amounts and Ratios	The actual and required capital amounts and ratios for the Bank as of June 30, 2019 and December 31, 2018 are presented in the table below: June 30, 2019 Actual For Capital Adequacy Purposes Minimum Capital Adequacy with Capital Buffer To Be Well Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio Amount Ratio (Dollars In Thousands) Total Capital (to risk-weighted assets) Consolidated Waterstone Financial, Inc. $ 398,062 26.12 % $ 121,915 8.00 % $ 160,013 10.50 % $ N/A N/A WaterStone Bank 343,730 22.58 % 121,803 8.00 % 159,867 10.50 % 152,254 10.00 % Tier 1 Capital (to risk-weighted assets) Consolidated Waterstone Financial, Inc. 385,445 25.29 % 91,436 6.00 % 129,534 8.50 % N/A N/A WaterStone Bank 331,113 21.75 % 91,352 6.00 % 129,416 8.50 % 121,803 8.00 % Common Equity Tier 1 Capital (to risk-weighted assets) Consolidated Waterstone Financial, Inc. 385,445 25.29 % 68,577 4.50 % 106,675 7.00 % N/A N/A WaterStone Bank 331,113 21.75 % 68,514 4.50 % 106,578 7.00 % 98,965 6.50 % Tier 1 Capital (to average assets) Consolidated Waterstone Financial, Inc. 385,445 19.44 % 79,296 4.00 % N/A N/A N/A N/A WaterStone Bank 331,113 16.70 % 79,296 4.00 % N/A N/A 99,120 5.00 % State of Wisconsin (to total assets) WaterStone Bank 331,113 16.47 % 120,660 6.00 % N/A N/A N/A N/A December 31, 2018 Actual For Capital Adequacy Purposes Minimum Capital Adequacy with Capital Buffer To Be Well Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio Amount Ratio (Dollars In Thousands) Total Capital (to risk-weighted assets) Consolidated Waterstone Financial, Inc. $ 414,566 28.22 % $ 117,506 8.00 % $ 145,046 9.875 % $ N/A N/A WaterStone Bank 395,783 26.95 % 117,490 8.00 % 145,027 9.875 % 146,863 10.00 % Tier 1 Capital (to risk-weighted assets) Consolidated Waterstone Financial, Inc. 401,317 27.32 % 88,130 6.00 % 115,670 7.875 % N/A N/A WaterStone Bank 382,534 26.05 % 88,118 6.00 % 115,655 7.875 % 117,490 8.00 % Common Equity Tier 1 Capital (to risk-weighted assets) Consolidated Waterstone Financial, Inc. 401,317 27.32 % 66,097 4.50 % 93,638 6.375 % N/A N/A WaterStone Bank 382,534 26.05 % 66,088 4.50 % 93,625 6.375 % 95,461 6.50 % Tier 1 Capital (to average assets) Consolidated Waterstone Financial, Inc. 401,317 21.06 % 76,214 4.00 % N/A N/A N/A N/A WaterStone Bank 382,534 20.08 % 76,214 4.00 % N/A N/A 95,268 5.00 % State of Wisconsin (to total assets) WaterStone Bank 382,534 20.01 % 114,712 6.00 % N/A N/A N/A N/A

Offsetting of Assets and Liab_2

Offsetting of Assets and Liabilities (Tables)	6 Months Ended
	Jun. 30, 2019
Offsetting of Assets and Liabilities [Abstract]
Repurchase Liabilities	The following table presents the liabilities subject to an enforceable master netting agreement as of June 30, 2019 and December 31, 2018. Gross Recognized Liabilities Gross Amounts Offset Net Amounts Presented Gross Amounts Not Offset Net Amount (In Thousands) June 30, 2019 Repurchase Agreement Short-term $ 23,681 $ - $ 23,681 $ 23,681 $ - $ 23,681 $ - $ 23,681 $ 23,681 $ - December 31, 2018 Repurchase Agreement Short-term $ 5,046 $ - $ 5,046 $ 5,046 $ - $ 5,046 $ - $ 5,046 $ 5,046 $ -

Commitments, Off-Balance Shee_2

Commitments, Off-Balance Sheet Arrangements, and Contingent Liabilities (Tables)	6 Months Ended
	Jun. 30, 2019
Commitments, Off-Balance Sheet Arrangements, and Contingent Liabilities [Abstract]
Financial Instruments with Off-Balance Sheet Risk	The Company is a party to financial instruments with off-balance-sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit and standby letters of credit. Those instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amounts recognized in the consolidated statements of financial condition. The contract or notional amounts of those instruments reflect the extent of involvement the Company has in particular classes of financial instruments. June 30, 2019 December 31, 2018 (In Thousands) Financial instruments whose contract amounts represent potential credit risk: Commitments to extend credit under amortizing loans (1) $ 85,611 $ 33,762 Commitments to extend credit under home equity lines of credit (2) 14,742 14,903 Unused portion of construction loans (3) 60,028 79,776 Unused portion of business lines of credit 13,806 16,778 Standby letters of credit 161 860 (1) (2) (3)

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2019
Earnings Per Share [Abstract]
Calculations for Basic and Diluted Earnings Loss Per Share	Presented below are the calculations for basic and diluted earnings per share: Three months ended June 30, Six months ended June 30, 2019 2018 2019 2018 (In Thousands, except per share amounts) Net income $ 9,643 $ 9,420 $ 16,185 $ 16,373 Weighted average shares outstanding 26,242 27,504 26,370 27,506 Effect of dilutive potential common shares 170 238 202 284 Diluted weighted average shares outstanding 26,412 27,742 26,572 27,790 Basic earnings per share $ 0.37 $ 0.34 $ 0.61 $ 0.60 Diluted earnings per share $ 0.37 $ 0.34 $ 0.61 $ 0.59

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2019
Fair Values Measurements [Abstract]
Fair Value, Assets and Liabilities Measured on Recurring Basis	The following table presents information about our assets recorded in our consolidated statements of financial condition at their fair value on a recurring basis as of June 30, 2019 and December 31, 2018, and indicates the fair value hierarchy of the valuation techniques utilized to determine such fair value. Fair Value Measurements Using June 30, 2019 Level 1 Level 2 Level 3 (In Thousands) Available-for-sale securities Mortgage-backed securities $ 38,534 $ - $ 38,534 $ - Collateralized mortgage obligations Government sponsored enterprise issued 75,864 - 75,864 - Municipal securities 54,893 - 54,893 - Other debt securities 13,571 - 13,571 - Loans held for sale 244,052 - 244,052 - Mortgage banking derivative assets 3,326 - - 3,326 Mortgage banking derivative liabilities 1,044 - - 1,044 Fair Value Measurements Using December 31, 2018 Level 1 Level 2 Level 3 (In Thousands) Available-for-sale securities Mortgage-backed securities $ 41,631 $ - $ 41,631 $ - Collateralized mortgage obligations Government sponsored enterprise issued 74,955 - 74,955 - Municipal securities 55,948 - 55,948 - Other debt securities 13,186 - 13,186 - Loans held for sale 141,616 - 141,616 - Mortgage banking derivative assets 2,014 - - 2,014 Mortgage banking derivative liabilities 1,116 - - 1,116
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation	The table below presents reconciliation for all assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) during 2019 and 2018. Six months ended June 30, 2019 2018 (In Thousands) Mortgage derivative, net balance at the beginning of the period $ 898 2004 Mortgage derivative gain, net 1,384 719 Mortgage derivative, net balance at the end of the period $ 2,282 2,723
Fair Value Measurements, Nonrecurring	Assets Recorded at Fair Value on a Non-recurring Basis The following tables present information about our assets recorded in our consolidated statements of financial condition at their fair value on a non-recurring basis as of June 30, 2019 and December 31, 2018, and indicate the fair value hierarchy of the valuation techniques utilized to determine such fair value. Fair Value Measurements Using June 30, 2019 Level 1 Level 2 Level 3 (In Thousands) Impaired loans, net (1) $ 598 $ - $ - $ 598 Real estate owned 1,684 - - 1,684 Impaired mortgage servicing rights 159 - - 159 Fair Value Measurements Using December 31, 2018 Level 1 Level 2 Level 3 (In Thousands) Impaired loans, net (1) $ 2,876 $ - $ - $ 2,876 Real estate owned 2,152 - - 2,152 (1) Represents collateral-dependent impaired loans, net, which are included in loans.
Fair Value, by Balance Sheet Grouping	The carrying amounts and fair values of the Company’s financial instruments consist of the following: June 30, 2019 December 31, 2018 Carrying amount Fair Value Carrying amount Fair Value Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 (In Thousands) Financial Assets Cash and cash equivalents $ 70,145 $ 70,145 $ 60,870 $ 9,275 $ - $ 86,101 $ 86,101 $ 73,601 $ 12,500 $ - Securities available-for-sale 182,862 182,862 - 182,862 - 185,720 185,720 - 185,720 - Loans held for sale 244,052 244,052 - 244,052 - 141,616 141,616 - 141,616 - Loans receivable 1,370,727 1,326,449 - - 1,326,449 1,379,148 1,311,633 - - 1,311,633 FHLB stock 22,275 22,275 - 22,275 - 19,350 19,350 - 19,350 - Accrued interest receivable 5,596 5,596 5,596 - - 5,337 5,337 5,337 - - Mortgage servicing rights 175 186 - - 186 109 109 - - 109 Mortgage banking derivative assets 3,326 3,326 - - 3,326 2,014 2,014 - - 2,014 Financial Liabilities Deposits 1,054,996 1,055,534 309,345 746,189 - 1,038,495 1,038,544 302,622 735,922 - Advance payments by borrowers for taxes 18,852 18,852 18,852 - - 4,371 4,371 4,371 - - Borrowings 518,681 519,789 - 519,789 - 435,046 432,269 - 432,269 - Accrued interest payable 1,531 1,531 1,531 - - 1,395 1,395 1,395 - - Mortgage banking derivative liabilities 1,044 1,044 - - 1,044 1,116 1,116 - - 1,116

Segment Reporting (Tables)

Segment Reporting (Tables)	6 Months Ended
	Jun. 30, 2019
Segment Reporting [Abstract]
Segment Reporting Information, by Segment	As of or for the three months ended June 30, 2019 Community Banking Mortgage Banking Holding Company and Other Consolidated (In Thousands) Net interest income (loss) $ 13,530 $ (529 ) $ (20 ) $ 12,981 Provision for loan losses - 30 - 30 Net interest income (loss) after provision for loan losses 13,530 (559 ) (20 ) 12,951 Noninterest income 1,079 34,364 (253 ) 35,190 Noninterest expenses: Compensation, payroll taxes, and other employee benefits 4,671 22,579 (176 ) 27,074 Occupancy, office furniture and equipment 944 1,736 - 2,680 Advertising 220 743 - 963 Data processing 493 372 4 869 Communications 93 260 - 353 Professional fees 160 620 9 789 Real estate owned 19 - - 19 Loan processing expense - 879 - 879 Other 635 1,186 (92 ) 1,729 Total noninterest expenses 7,235 28,375 (255 ) 35,355 Income (loss) before income taxes 7,374 5,430 (18 ) 12,786 Income tax expense 1,594 1,545 4 3,143 Net income (loss) $ 5,780 $ 3,885 $ (22 ) $ 9,643 Total assets $ 1,958,339 $ 290,977 $ (234,178 ) $ 2,015,138 As of or for the three months ended June 30, 2018 Community Banking Mortgage Banking Holding Company and Other Consolidated (In Thousands) Net interest income (loss) $ 13,747 $ (40 ) $ 13 $ 13,720 Provision for loan losses (250 ) 30 - (220 ) Net interest income (loss) after provision for loan losses 13,997 (70 ) 13 13,940 Noninterest income 1,137 32,547 (366 ) 33,318 Noninterest expenses: Compensation, payroll taxes, and other employee benefits 4,301 22,078 (145 ) 26,234 Occupancy, office furniture and equipment 813 1,792 - 2,605 Advertising 241 759 - 1,000 Data processing 400 224 (1 ) 623 Communications 121 314 - 435 Professional fees 180 458 9 647 Real estate owned (126 ) - - (126 ) Loan processing expense - 904 - 904 Other 658 1,964 (207 ) 2,415 Total noninterest expenses 6,588 28,493 (344 ) 34,737 Income (loss) before income taxes 8,546 3,984 (9 ) 12,521 Income tax expense (benefit) 1,970 1,133 (2 ) 3,101 Net income (loss) $ 6,576 $ 2,851 $ (7 ) $ 9,420 Total assets $ 1,878,299 $ 179,546 $ (180,615 ) $ 1,877,230 As of or for the six months ended June 30, 2019 Community Banking Mortgage Banking Holding Company and Other Consolidated (In Thousands) Net interest income $ 26,662 $ (737 ) $ (8 ) $ 25,917 Provision for loan losses (700 ) 50 - (650 ) Net interest income (loss) after provision for loan losses 27,362 (787 ) (8 ) 26,567 Noninterest income 1,960 57,935 (448 ) 59,447 Noninterest expenses: Compensation, payroll taxes, and other employee benefits 9,427 38,639 (353 ) 47,713 Occupancy, office furniture and equipment 1,916 3,540 - 5,456 Advertising 401 1,520 - 1,921 Data processing 950 680 8 1,638 Communications 175 506 - 681 Professional fees 428 1,046 10 1,484 Real estate owned 51 - - 51 Loan processing expense - 1,684 - 1,684 Other 1,124 3,098 (146 ) 4,076 Total noninterest expenses 14,472 50,713 (481 ) 64,704 Income before income taxes 14,850 6,435 25 21,310 Income tax expense 3,281 1,831 13 5,125 Net income $ 11,569 $ 4,604 $ 12 $ 16,185 As of or for the six months ended June 30, 2018 Community Banking Mortgage Banking Holding Company and Other Consolidated (In Thousands) Net interest income $ 27,051 $ (232 ) $ 42 $ 26,861 Provision for loan losses (1,150 ) 50 - (1,100 ) Net interest income after provision for loan losses 28,201 (282 ) 42 27,961 Noninterest income 2,076 57,278 (853 ) 58,501 Noninterest expenses: Compensation, payroll taxes, and other employee benefits 9,189 38,319 (291 ) 47,217 Occupancy, office furniture and equipment 1,639 3,605 - 5,244 Advertising 381 1,479 - 1,860 Data processing 835 410 3 1,248 Communications 221 596 - 817 Profeessional fees 371 972 4 1,347 Real estate owned 191 - - 191 Loan processing expense - 1,892 - 1,892 Other 1,443 4,161 (536 ) 5,068 Total noninterest expenses 14,270 51,434 (820 ) 64,884 Income before income taxes 16,007 5,562 9 21,578 Income tax expense (benefit) 3,638 1,568 (1 ) 5,205 Net income $ 12,369 $ 3,994 $ 10 $ 16,373

Leases (Tables)

Leases (Tables)	6 Months Ended
	Jun. 30, 2019
Leases [Abstract]
Components of Operating Expenses	The cost components of our operating leases were as follows for the three and six months ended June 30, 2019: Three months ended June 30, 2019 Six months ended June 30, 2019 (In Thousands) Operating lease cost 804 $ 1562 Variable cost 156 416 Short-term lease cost 294 527 Total 1,254 $ 2,505
Other Information Related to Operating Leases	The table below summarizes other information related to our operating leases: Six months ended June 30, 2019 (Dollars in Thousands) Cash paid for amounts included in the measurement of lease liabilities Operating cash flows from operating leases $ 1,708 Initial recognition of right of use asset 10,490 Initial recognition of lease liabilities 10,979 Weighted average remaining lease term - operating leases, in years 3.4 Weighted average discount rate - operating leases 5.7 %
Maturity Analysis of Lease Liabilities	As of June 30, 2019, lease liability information for the Company is summarized in the following table. Maturity analysis Operating leases (In Thousands) One year or less $ 3,264 More than one year through two years 2,712 More than two years through three years 1,812 More than three years through four years 1,406 More than four years through five years 881 More than five years 992 Total lease payments 11,067 Present value discount (1,452 ) Lease liability $ 9,615

Securities Available for Sale_3

Securities Available for Sale (Details)	6 Months Ended			12 Months Ended
	Jun. 30, 2019USD ($)Security	Jun. 30, 2018USD ($)	Jun. 30, 2017USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2014USD ($)
Available-for-sale Securities, Fair Value to Amortized Cost Basis [Abstract]
Amortized Cost	$ 181,271,000			$ 188,272,000
Gross unrealized gains	3,225,000			1,159,000
Gross unrealized losses	(1,634,000)			(3,711,000)
Fair Value	182,862,000			185,720,000
Amortized cost of investment securities by contractual maturity [Abstract]
Due within one year	8,312,000
Due after one year through five years	26,204,000
Due after five years through ten years	23,135,000
Due after ten years	10,621,000
Mortgage-related securities	112,999,000
Amortized Cost	181,271,000			188,272,000
Fair value of investment securities by contractual maturity [Abstract]
Due within one year	8,314,000
Due after one year through five years	26,587,000
Due after five years through ten years	24,245,000
Due after ten years	9,318,000
Mortgage-related securities	114,398,000
Fair Value	182,862,000			185,720,000
Gross gains and losses from sales of investment securities available for sale [Abstract]
Proceeds from sales of investment securities			$ 0
Fair value of securities available for sale in a continuous unrealized loss position [Abstract]
Less than 12 months	0			13,710,000
12 months or longer	36,135,000			104,766,000
Fair value	36,135,000			118,476,000
Unrealized loss on securities available for sale in a continuous unrealized loss position [Abstract]
Less than 12 months	0	$ (39,000)
12 months or longer	(1,634,000)	(3,672,000)
Unrealized loss	(1,634,000)	(3,711,000)
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Credit-related impairments on securities as of beginning of period	94,000	94,000		94,000
Credit related impairments related to a security for which other-than-temporaryimpairment was not previously recognized	0			0
Additional credit impairments on securities
Credit-related impairments on securities as of end of period	94,000			94,000
Amortized Cost	116,000	116,000
Mortgage-Backed Securities [Member]
Available-for-sale Securities, Fair Value to Amortized Cost Basis [Abstract]
Amortized Cost	38,250,000			42,105,000
Gross unrealized gains	329,000			91,000
Gross unrealized losses	(45,000)			(565,000)
Fair Value	38,534,000			41,631,000
Amortized cost of investment securities by contractual maturity [Abstract]
Amortized Cost	38,250,000			42,105,000
Fair value of investment securities by contractual maturity [Abstract]
Fair Value	38,534,000			41,631,000
Fair value of securities available for sale in a continuous unrealized loss position [Abstract]
Less than 12 months	0			3,036,000
12 months or longer	7,405,000			33,029,000
Fair value	7,405,000			36,065,000
Unrealized loss on securities available for sale in a continuous unrealized loss position [Abstract]
Less than 12 months	0	(9,000)
12 months or longer	(45,000)	(556,000)
Unrealized loss	(45,000)	(565,000)
Collateralized Mortgage Obligations, Government Sponsored Enterprise Issued [Member]
Available-for-sale Securities, Fair Value to Amortized Cost Basis [Abstract]
Amortized Cost	74,749,000			75,923,000
Gross unrealized gains	1,272,000			243,000
Gross unrealized losses	(157,000)			(1,211,000)
Fair Value	75,864,000			74,955,000
Amortized cost of investment securities by contractual maturity [Abstract]
Amortized Cost	74,749,000			75,923,000
Fair value of investment securities by contractual maturity [Abstract]
Fair Value	75,864,000			74,955,000
Fair value of securities available for sale in a continuous unrealized loss position [Abstract]
Less than 12 months	0			3,079,000
12 months or longer	19,434,000			47,279,000
Fair value	19,434,000			50,358,000
Unrealized loss on securities available for sale in a continuous unrealized loss position [Abstract]
Less than 12 months	0	(13,000)
12 months or longer	(157,000)	(1,198,000)
Unrealized loss	(157,000)	(1,211,000)
Mortgage-Related Securities [Member]
Available-for-sale Securities, Fair Value to Amortized Cost Basis [Abstract]
Amortized Cost	112,999,000			118,028,000
Gross unrealized gains	1,601,000			334,000
Gross unrealized losses	(202,000)			(1,776,000)
Fair Value	114,398,000			116,586,000
Securities pledged as collateral to secure repurchase agreements or related to mortgage banking activities	1,600,000	2,100,000
Amortized cost of investment securities by contractual maturity [Abstract]
Amortized Cost	112,999,000			118,028,000
Fair value of investment securities by contractual maturity [Abstract]
Fair Value	114,398,000			116,586,000
Municipal Securities [Member]
Available-for-sale Securities, Fair Value to Amortized Cost Basis [Abstract]
Amortized Cost	53,270,000			55,242,000
Gross unrealized gains	1,624,000			825,000
Gross unrealized losses	(1,000)			(119,000)
Fair Value	$ 54,893,000			55,948,000
Number of securities that were in unrealized loss position twelve months or longer | Security	11
Amortized cost of investment securities by contractual maturity [Abstract]
Amortized Cost	$ 53,270,000			55,242,000
Fair value of investment securities by contractual maturity [Abstract]
Fair Value	54,893,000			55,948,000
Gross gains and losses from sales of investment securities available for sale [Abstract]
Proceeds from sales of investment securities		0
Fair value of securities available for sale in a continuous unrealized loss position [Abstract]
Less than 12 months	0			7,595,000
12 months or longer	727,000			11,272,000
Fair value	727,000			18,867,000
Unrealized loss on securities available for sale in a continuous unrealized loss position [Abstract]
Less than 12 months	0	(17,000)
12 months or longer	(1,000)	(102,000)
Unrealized loss	(1,000)	(119,000)
Other Debt Securities [Member]
Available-for-sale Securities, Fair Value to Amortized Cost Basis [Abstract]
Amortized Cost	15,002,000			15,002,000
Gross unrealized gains	0			0
Gross unrealized losses	(1,431,000)			(1,816,000)
Fair Value	$ 13,571,000			13,186,000
Number of securities that were in unrealized loss position twelve months or longer | Security	20
Amortized cost of investment securities by contractual maturity [Abstract]
Amortized Cost	$ 15,002,000			15,002,000
Fair value of investment securities by contractual maturity [Abstract]
Fair Value	13,571,000			13,186,000
Fair value of securities available for sale in a continuous unrealized loss position [Abstract]
Less than 12 months	0			0
12 months or longer	8,569,000			13,186,000
Fair value	8,569,000			13,186,000
Unrealized loss on securities available for sale in a continuous unrealized loss position [Abstract]
Less than 12 months	0	0
12 months or longer	(1,431,000)	(1,816,000)
Unrealized loss	(1,431,000)	$ (1,816,000)
Debt Securities [Member]
Available-for-sale Securities, Fair Value to Amortized Cost Basis [Abstract]
Amortized Cost	68,272,000			70,244,000
Gross unrealized gains	1,624,000			825,000
Gross unrealized losses	(1,432,000)			(1,935,000)
Fair Value	68,464,000			69,134,000
Amortized cost of investment securities by contractual maturity [Abstract]
Amortized Cost	68,272,000			70,244,000
Fair value of investment securities by contractual maturity [Abstract]
Fair Value	$ 68,464,000			$ 69,134,000

Loans Receivable, Part I (Detai

Loans Receivable, Part I (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Mortgage Loans [Abstract]
Loans receivable	$ 1,370,727	$ 1,379,148
Loans receivable pledged as collateral	1,080	1,010
Advances by Federal Home Loan Bank	495,000	430,000
Residential Real Estate [Member] | One-to-Four Family [Member]
Mortgage Loans [Abstract]
Loans receivable	478,006	489,979
Residential Real Estate [Member] | Multi Family [Member]
Mortgage Loans [Abstract]
Loans receivable	592,692	597,087
Residential Real Estate [Member] | Home Equity [Member]
Mortgage Loans [Abstract]
Loans receivable	19,242	19,956
Construction and Land [Member]
Mortgage Loans [Abstract]
Loans receivable	25,491	13,361
Commercial Real Estate [Member]
Mortgage Loans [Abstract]
Loans receivable	223,553	225,522
Consumer [Member]
Mortgage Loans [Abstract]
Loans receivable	662	433
Commercial Loans [Member]
Mortgage Loans [Abstract]
Loans receivable	$ 31,081	$ 32,810

Loans Receivable, Part II (Deta

Loans Receivable, Part II (Details) - USD ($)		Jun. 30, 2019	Dec. 31, 2018
Financing receivable, recorded investment, aging [Abstract]
Total Past Due		$ 8,334,000	$ 6,950,000
Current	[1]	1,362,393,000	1,372,198,000
Total Loans		1,370,727,000	1,379,148,000
Loan Receivable, Nonaccrual Status		1,800,000	990,000,000,000
90 or more days past due			0
1 to 59 Days Past Due [Member]
Financing receivable, recorded investment, aging [Abstract]
Total Past Due	[2]	4,181,000	1,807,000
Loan Receivable, Nonaccrual Status		162,000	422,000
60 to 89 Days Past Due [Member]
Financing receivable, recorded investment, aging [Abstract]
Total Past Due	[3]	599,000	118,000
Loan Receivable, Nonaccrual Status		203,000,000,000	118,000,000,000
Greater than 90 Days Past Due [Member]
Financing receivable, recorded investment, aging [Abstract]
Total Past Due		3,554,000	5,025,000
Residential Real Estate [Member] | One-to-Four Family [Member]
Financing receivable, recorded investment, aging [Abstract]
Total Past Due		7,000,000	5,433,000
Current	[1]	471,006,000	484,546,000
Total Loans		478,006,000	489,979,000
Residential Real Estate [Member] | One-to-Four Family [Member] | 1 to 59 Days Past Due [Member]
Financing receivable, recorded investment, aging [Abstract]
Total Past Due	[2]	3,517,000	1,523,000
Residential Real Estate [Member] | One-to-Four Family [Member] | 60 to 89 Days Past Due [Member]
Financing receivable, recorded investment, aging [Abstract]
Total Past Due	[3]	599,000	76,000
Residential Real Estate [Member] | One-to-Four Family [Member] | Greater than 90 Days Past Due [Member]
Financing receivable, recorded investment, aging [Abstract]
Total Past Due		2,884,000	3,834,000
Residential Real Estate [Member] | Multi Family [Member]
Financing receivable, recorded investment, aging [Abstract]
Total Past Due		576,000	937,000
Current	[1]	592,116,000	596,150,000
Total Loans		592,692,000	597,087,000
Residential Real Estate [Member] | Multi Family [Member] | 1 to 59 Days Past Due [Member]
Financing receivable, recorded investment, aging [Abstract]
Total Past Due	[2]	0	0
Residential Real Estate [Member] | Multi Family [Member] | 60 to 89 Days Past Due [Member]
Financing receivable, recorded investment, aging [Abstract]
Total Past Due	[3]	0	0
Residential Real Estate [Member] | Multi Family [Member] | Greater than 90 Days Past Due [Member]
Financing receivable, recorded investment, aging [Abstract]
Total Past Due		576,000	937,000
Residential Real Estate [Member] | Home Equity [Member]
Financing receivable, recorded investment, aging [Abstract]
Total Past Due		169,000	369,000
Current	[1]	19,073,000	19,587,000
Total Loans		19,242,000	19,956,000
Residential Real Estate [Member] | Home Equity [Member] | 1 to 59 Days Past Due [Member]
Financing receivable, recorded investment, aging [Abstract]
Total Past Due	[2]	169,000	216,000
Residential Real Estate [Member] | Home Equity [Member] | 60 to 89 Days Past Due [Member]
Financing receivable, recorded investment, aging [Abstract]
Total Past Due	[3]	0	42,000
Residential Real Estate [Member] | Home Equity [Member] | Greater than 90 Days Past Due [Member]
Financing receivable, recorded investment, aging [Abstract]
Total Past Due		0	111,000
Construction and Land [Member]
Financing receivable, recorded investment, aging [Abstract]
Total Past Due		0	0
Current	[1]	25,491,000	13,361,000
Total Loans		25,491,000	13,361,000
Construction and Land [Member] | 1 to 59 Days Past Due [Member]
Financing receivable, recorded investment, aging [Abstract]
Total Past Due	[2]	0	0
Construction and Land [Member] | 60 to 89 Days Past Due [Member]
Financing receivable, recorded investment, aging [Abstract]
Total Past Due	[3]	0	0
Construction and Land [Member] | Greater than 90 Days Past Due [Member]
Financing receivable, recorded investment, aging [Abstract]
Total Past Due		0	0
Commercial Real Estate [Member]
Financing receivable, recorded investment, aging [Abstract]
Total Past Due		380,000	164,000
Current	[1]	223,173,000	225,358,000
Total Loans		223,553,000	225,522,000
Commercial Real Estate [Member] | 1 to 59 Days Past Due [Member]
Financing receivable, recorded investment, aging [Abstract]
Total Past Due	[2]	287,000	39,000
Commercial Real Estate [Member] | 60 to 89 Days Past Due [Member]
Financing receivable, recorded investment, aging [Abstract]
Total Past Due	[3]	0	0
Commercial Real Estate [Member] | Greater than 90 Days Past Due [Member]
Financing receivable, recorded investment, aging [Abstract]
Total Past Due		93,000	125,000
Consumer [Member]
Financing receivable, recorded investment, aging [Abstract]
Total Past Due		0	29,000
Current	[1]	662,000	404,000
Total Loans		662,000	433,000
Consumer [Member] | 1 to 59 Days Past Due [Member]
Financing receivable, recorded investment, aging [Abstract]
Total Past Due	[2]	0	29,000
Consumer [Member] | 60 to 89 Days Past Due [Member]
Financing receivable, recorded investment, aging [Abstract]
Total Past Due	[3]	0	0
Consumer [Member] | Greater than 90 Days Past Due [Member]
Financing receivable, recorded investment, aging [Abstract]
Total Past Due		0	0
Commercial Loans [Member]
Financing receivable, recorded investment, aging [Abstract]
Total Past Due		209,000	18,000
Current	[1]	30,872,000	32,792,000
Total Loans		31,081,000	32,810,000
Commercial Loans [Member] | 1 to 59 Days Past Due [Member]
Financing receivable, recorded investment, aging [Abstract]
Total Past Due	[2]	208,000	0
Commercial Loans [Member] | 60 to 89 Days Past Due [Member]
Financing receivable, recorded investment, aging [Abstract]
Total Past Due	[3]	0	0
Commercial Loans [Member] | Greater than 90 Days Past Due [Member]
Financing receivable, recorded investment, aging [Abstract]
Total Past Due		$ 1,000	$ 18,000
[1]	Includes $1.9 million and $4.4 million at June 30, 2017 and December 31, 2016, respectively, which are on non-accrual status.
[2]	Includes $59,000 and $148,000 at June 30, 2017 and December 31, 2016, respectively, which are on non-accrual status.
[3]	Includes $1.3 million and $- at June 30, 2017 and December 31, 2016, respectively, which are on non-accrual status.

Loans Receivable, Part III (Det

Loans Receivable, Part III (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Dec. 31, 2018
Allowance for loan losses [Roll Forward]
Balance at beginning of period			$ 13,249	$ 14,077
Provision (credit) for loan losses	$ 30	$ (220)	(650)	(1,100)
Charge-offs			(39)	(62)
Recoveries			57	209
Balance at end of period	12,617	13,124	12,617	13,124
Summary of the allowance for loan loss for loans evaluated individually and collectively for impairment by collateral class [Abstract]
Allowance related to loans individually evaluated for impairment					$ 186	$ 186
Allowance related to loans collectively evaluated for impairment					12,431	13,063
Provision for loan losses	12,617	13,124	13,249	14,077	12,617	13,249
Loans individually evaluated for impairment					8,750	12,100
Loans collectively evaluated for impairment					1,361,977	1,367,048
Total gross loans					1,370,727	1,379,148
Total loans					1,370,727	1,379,148
Residential Real Estate [Member] | One-to-Four Family [Member]
Allowance for loan losses [Roll Forward]
Balance at beginning of period			5,742	5,794
Provision (credit) for loan losses			(449)	102
Charge-offs			(25)	(62)
Recoveries			35	85
Balance at end of period	5,303	5,919	5,303	5,919
Summary of the allowance for loan loss for loans evaluated individually and collectively for impairment by collateral class [Abstract]
Allowance related to loans individually evaluated for impairment					71	73
Allowance related to loans collectively evaluated for impairment					5,232	5,669
Provision for loan losses	5,303	5,919	5,742	5,794	5,303	5,742
Loans individually evaluated for impairment					6,988	7,642
Loans collectively evaluated for impairment					471,018	482,337
Total gross loans					478,006	489,979
Total loans					478,006	489,979
Residential Real Estate [Member] | Multi Family [Member]
Allowance for loan losses [Roll Forward]
Balance at beginning of period			4,153	4,431
Provision (credit) for loan losses			154	(425)
Charge-offs			(1)	0
Recoveries			9	70
Balance at end of period	4,315	4,076	4,315	4,076
Summary of the allowance for loan loss for loans evaluated individually and collectively for impairment by collateral class [Abstract]
Allowance related to loans individually evaluated for impairment					80	0
Allowance related to loans collectively evaluated for impairment					4,235	4,153
Provision for loan losses	4,315	4,076	4,153	4,431	4,315	4,153
Loans individually evaluated for impairment					1,261	1,309
Loans collectively evaluated for impairment					591,431	595,778
Total gross loans					592,692	597,087
Total loans					592,692	597,087
Residential Real Estate [Member] | Home Equity [Member]
Allowance for loan losses [Roll Forward]
Balance at beginning of period			325	356
Provision (credit) for loan losses			(54)	(62)
Charge-offs			(8)	0
Recoveries			12	13
Balance at end of period	275	307	275	307
Summary of the allowance for loan loss for loans evaluated individually and collectively for impairment by collateral class [Abstract]
Allowance related to loans individually evaluated for impairment					26	46
Allowance related to loans collectively evaluated for impairment					249	279
Provision for loan losses	275	307	325	356	275	325
Loans individually evaluated for impairment					126	246
Loans collectively evaluated for impairment					19,116	19,710
Total gross loans					19,242	19,956
Total loans					19,242	19,956
Construction and Land [Member]
Allowance for loan losses [Roll Forward]
Balance at beginning of period			400	949
Provision (credit) for loan losses			12	(607)
Charge-offs			0	0
Recoveries			0	40
Balance at end of period	412	382	412	382
Summary of the allowance for loan loss for loans evaluated individually and collectively for impairment by collateral class [Abstract]
Allowance related to loans individually evaluated for impairment					0	0
Allowance related to loans collectively evaluated for impairment					412	400
Provision for loan losses	412	382	400	949	412	400
Loans individually evaluated for impairment					0	0
Loans collectively evaluated for impairment					25,491	13,361
Total gross loans					25,491	13,361
Total loans					25,491	13,361
Commercial Real Estate [Member]
Allowance for loan losses [Roll Forward]
Balance at beginning of period			2,126	1,881
Provision (credit) for loan losses			(214)	87
Charge-offs			0	0
Recoveries			1	1
Balance at end of period	1,913	1,969	1,913	1,969
Summary of the allowance for loan loss for loans evaluated individually and collectively for impairment by collateral class [Abstract]
Allowance related to loans individually evaluated for impairment					9	67
Allowance related to loans collectively evaluated for impairment					1,904	2,059
Provision for loan losses	1,913	1,969	2,126	1,881	1,913	2,126
Loans individually evaluated for impairment					374	2,885
Loans collectively evaluated for impairment					223,179	222,637
Total gross loans					223,553	225,522
Total loans					223,553	225,522
Consumer [Member]
Allowance for loan losses [Roll Forward]
Balance at beginning of period			20	10
Provision (credit) for loan losses			(3)	(1)
Charge-offs			(5)	0
Recoveries			0	0
Balance at end of period	12	9	12	9
Summary of the allowance for loan loss for loans evaluated individually and collectively for impairment by collateral class [Abstract]
Allowance related to loans individually evaluated for impairment					0	0
Allowance related to loans collectively evaluated for impairment					12	20
Provision for loan losses	12	9	20	10	12	20
Loans individually evaluated for impairment					0	0
Loans collectively evaluated for impairment					662	433
Total gross loans					662	433
Total loans					662	433
Commercial Loans [Member]
Allowance for loan losses [Roll Forward]
Balance at beginning of period			483	656
Provision (credit) for loan losses			(96)	(194)
Charge-offs			0	0
Recoveries			0	0
Balance at end of period	387	462	387	462
Summary of the allowance for loan loss for loans evaluated individually and collectively for impairment by collateral class [Abstract]
Allowance related to loans individually evaluated for impairment					0	0
Allowance related to loans collectively evaluated for impairment					387	483
Provision for loan losses	$ 387	$ 462	$ 483	$ 656	387	483
Loans individually evaluated for impairment					1	18
Loans collectively evaluated for impairment					31,080	32,792
Total gross loans					31,081	32,810
Total loans					$ 31,081	$ 32,810

Loans Receivable, Part IV (Deta

Loans Receivable, Part IV (Details) - USD ($)	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Loans and Leases Receivable [Abstract]
At December 31, 2016	$ 1,370,727,000		$ 1,379,148,000
Loans requiring an officers' loans committee review and approval, minimum	500,000
Minimum amount of potential loan exposure to be reviewed by credit management personnel	$ 1,000,000
Maximum period of time loan is reviewed if renewed	1 year
Period of time sales of real estate owned fair value is based	2 years
Impaired Loans Receivable, Recorded Investment [Abstract]
Total Impaired, with Reserve, Recorded Investment	$ 784,000		3,062,000
Total Impaired, with no Reserve, Recorded Investment	7,966,000		9,038,000
Total Impaired, Recorded Investment	8,750,000		12,100,000
Impaired Loans Receivable, Unpaid Principal Balance [Abstract]
Total Impaired with Reserve, Unpaid Principal Balance	1,193,000		3,471,000
Total Impaired with no Reserve, Unpaid Principal Balance	9,734,000		10,811,000
Total Impaired, Unpaid Principal Balance, Total	10,927,000		14,282,000
Impaired Loans Receivable, Reserve [Abstract]
Total Impaired with Reserve, Reserve	186,000		186,000
Total Impaired with no Reserve, Reserve	0		0
Impaired Loans, Reserve	186,000		186,000
Impaired Loans Receivable, Cumulative Charge Offs [Abstract]
Total Impaired with Reserve, Cumulative Charge-offs	409,000		409,000
Total Impaired with no Reserve, Cumulative Charge-offs	1,768,000		1,773,000
Total Impaired, Cumulative Charge-offs	2,177,000		2,182,000
Impaired Loans Receivable, Average Recorded Investment [Abstract]
Total Impaired with Reserve, Average Recorded Investment	799,000	$ 554,000
Total Impaired with no Reserve, Average Recorded Investment	8,099,000	8,708,000
Total Impaired, Average Recorded Investment, Total	8,898,000	9,262,000
Impaired Loans Receivable, Interest Paid YTD [Abstract]
Total Impaired with Reserve, Interest Paid YTD	32,000	18,000
Total Impaired with no Reserve, Interest Paid YTD	266,000	228,000
Total Impaired, Interest Paid YTD	298,000	246,000
Charge-offs recorded to reduce the unpaid principal balance	1,800,000
Total impaired loans including troubled debt restructurings	4,140,000		6,732,000
Substandard [Member]
Loans and Leases Receivable [Abstract]
At December 31, 2016	10,750,000		10,921,000
Watch [Member]
Loans and Leases Receivable [Abstract]
At December 31, 2016	8,164,000		10,870,000
Pass [Member]
Loans and Leases Receivable [Abstract]
At December 31, 2016	1,351,813,000		1,357,357,000
Residential Real Estate [Member] | One-to-Four Family [Member]
Loans and Leases Receivable [Abstract]
At December 31, 2016	478,006,000		489,979,000
Impaired Loans Receivable, Recorded Investment [Abstract]
Total Impaired, with Reserve, Recorded Investment	349,000		462,000
Total Impaired, with no Reserve, Recorded Investment	6,639,000		7,180,000
Total Impaired, Recorded Investment	6,988,000		7,642,000
Impaired Loans Receivable, Unpaid Principal Balance [Abstract]
Total Impaired with Reserve, Unpaid Principal Balance	349,000		462,000
Total Impaired with no Reserve, Unpaid Principal Balance	7,579,000		8,120,000
Total Impaired, Unpaid Principal Balance, Total	7,928,000		8,582,000
Impaired Loans Receivable, Reserve [Abstract]
Total Impaired with Reserve, Reserve	71,000		73,000
Total Impaired with no Reserve, Reserve	0		0
Impaired Loans, Reserve	71,000		73,000
Impaired Loans Receivable, Cumulative Charge Offs [Abstract]
Total Impaired with Reserve, Cumulative Charge-offs	0		0
Total Impaired with no Reserve, Cumulative Charge-offs	940,000		940,000
Total Impaired, Cumulative Charge-offs	940,000		940,000
Impaired Loans Receivable, Average Recorded Investment [Abstract]
Total Impaired with Reserve, Average Recorded Investment	353,000	444,000
Total Impaired with no Reserve, Average Recorded Investment	6,727,000	7,307,000
Total Impaired, Average Recorded Investment, Total	7,080,000	7,751,000
Impaired Loans Receivable, Interest Paid YTD [Abstract]
Total Impaired with Reserve, Interest Paid YTD	11,000	15,000
Total Impaired with no Reserve, Interest Paid YTD	213,000	193,000
Total Impaired, Interest Paid YTD	224,000	208,000
Total impaired loans including troubled debt restructurings	3,509,000		3,584,000
Residential Real Estate [Member] | One-to-Four Family [Member] | Substandard [Member]
Loans and Leases Receivable [Abstract]
At December 31, 2016	7,376,000		7,799,000
Residential Real Estate [Member] | One-to-Four Family [Member] | Watch [Member]
Loans and Leases Receivable [Abstract]
At December 31, 2016	5,628,000		4,662,000
Residential Real Estate [Member] | One-to-Four Family [Member] | Pass [Member]
Loans and Leases Receivable [Abstract]
At December 31, 2016	465,002,000		477,518,000
Residential Real Estate [Member] | Multi Family [Member]
Loans and Leases Receivable [Abstract]
At December 31, 2016	592,692,000		597,087,000
Impaired Loans Receivable, Recorded Investment [Abstract]
Total Impaired, with Reserve, Recorded Investment	344,000		0
Total Impaired, with no Reserve, Recorded Investment	917,000		1,309,000
Total Impaired, Recorded Investment	1,261,000		1,309,000
Impaired Loans Receivable, Unpaid Principal Balance [Abstract]
Total Impaired with Reserve, Unpaid Principal Balance	344,000		0
Total Impaired with no Reserve, Unpaid Principal Balance	1,745,000		2,142,000
Total Impaired, Unpaid Principal Balance, Total	2,089,000		2,142,000
Impaired Loans Receivable, Reserve [Abstract]
Total Impaired with Reserve, Reserve	80,000		0
Total Impaired with no Reserve, Reserve	0		0
Impaired Loans, Reserve	80,000		0
Impaired Loans Receivable, Cumulative Charge Offs [Abstract]
Total Impaired with Reserve, Cumulative Charge-offs	0		0
Total Impaired with no Reserve, Cumulative Charge-offs	828,000		833,000
Total Impaired, Cumulative Charge-offs	828,000		833,000
Impaired Loans Receivable, Average Recorded Investment [Abstract]
Total Impaired with Reserve, Average Recorded Investment	348,000	0
Total Impaired with no Reserve, Average Recorded Investment	935,000	791,000
Total Impaired, Average Recorded Investment, Total	1,283,000	791,000
Impaired Loans Receivable, Interest Paid YTD [Abstract]
Total Impaired with Reserve, Interest Paid YTD	16,000	0
Total Impaired with no Reserve, Interest Paid YTD	41,000	26,000
Total Impaired, Interest Paid YTD	57,000	26,000
Total impaired loans including troubled debt restructurings	341,000		372,000
Residential Real Estate [Member] | Multi Family [Member] | Substandard [Member]
Loans and Leases Receivable [Abstract]
At December 31, 2016	1,261,000		1,309,000
Residential Real Estate [Member] | Multi Family [Member] | Watch [Member]
Loans and Leases Receivable [Abstract]
At December 31, 2016	486,000		491,000
Residential Real Estate [Member] | Multi Family [Member] | Pass [Member]
Loans and Leases Receivable [Abstract]
At December 31, 2016	590,945,000		595,287,000
Residential Real Estate [Member] | Home Equity [Member]
Loans and Leases Receivable [Abstract]
At December 31, 2016	19,242,000		19,956,000
Impaired Loans Receivable, Recorded Investment [Abstract]
Total Impaired, with Reserve, Recorded Investment	82,000		107,000
Total Impaired, with no Reserve, Recorded Investment	44,000		139,000
Total Impaired, Recorded Investment	126,000		246,000
Impaired Loans Receivable, Unpaid Principal Balance [Abstract]
Total Impaired with Reserve, Unpaid Principal Balance	82,000		107,000
Total Impaired with no Reserve, Unpaid Principal Balance	44,000		139,000
Total Impaired, Unpaid Principal Balance, Total	126,000		246,000
Impaired Loans Receivable, Reserve [Abstract]
Total Impaired with Reserve, Reserve	26,000		46,000
Total Impaired with no Reserve, Reserve	0		0
Impaired Loans, Reserve	26,000		46,000
Impaired Loans Receivable, Cumulative Charge Offs [Abstract]
Total Impaired with Reserve, Cumulative Charge-offs	0		0
Total Impaired with no Reserve, Cumulative Charge-offs	0		0
Total Impaired, Cumulative Charge-offs	0		0
Impaired Loans Receivable, Average Recorded Investment [Abstract]
Total Impaired with Reserve, Average Recorded Investment	85,000	80,000
Total Impaired with no Reserve, Average Recorded Investment	46,000	146,000
Total Impaired, Average Recorded Investment, Total	131,000	226,000
Impaired Loans Receivable, Interest Paid YTD [Abstract]
Total Impaired with Reserve, Interest Paid YTD	5,000	3,000
Total Impaired with no Reserve, Interest Paid YTD	2,000	2,000
Total Impaired, Interest Paid YTD	7,000	5,000
Residential Real Estate [Member] | Home Equity [Member] | Substandard [Member]
Loans and Leases Receivable [Abstract]
At December 31, 2016	320,000		246,000
Residential Real Estate [Member] | Home Equity [Member] | Watch [Member]
Loans and Leases Receivable [Abstract]
At December 31, 2016	0		468,000
Residential Real Estate [Member] | Home Equity [Member] | Pass [Member]
Loans and Leases Receivable [Abstract]
At December 31, 2016	18,922,000		19,242,000
Construction and Land [Member]
Loans and Leases Receivable [Abstract]
At December 31, 2016	25,491,000		13,361,000
Impaired Loans Receivable, Recorded Investment [Abstract]
Total Impaired, with Reserve, Recorded Investment	0		0
Total Impaired, with no Reserve, Recorded Investment	0		0
Total Impaired, Recorded Investment	0		0
Impaired Loans Receivable, Unpaid Principal Balance [Abstract]
Total Impaired with Reserve, Unpaid Principal Balance	0		0
Total Impaired with no Reserve, Unpaid Principal Balance	0		0
Total Impaired, Unpaid Principal Balance, Total	0		0
Impaired Loans Receivable, Reserve [Abstract]
Total Impaired with Reserve, Reserve	0		0
Total Impaired with no Reserve, Reserve	0		0
Impaired Loans, Reserve	0		0
Impaired Loans Receivable, Cumulative Charge Offs [Abstract]
Total Impaired with Reserve, Cumulative Charge-offs	0		0
Total Impaired with no Reserve, Cumulative Charge-offs	0		0
Total Impaired, Cumulative Charge-offs	0		0
Impaired Loans Receivable, Average Recorded Investment [Abstract]
Total Impaired with Reserve, Average Recorded Investment	0	0
Total Impaired with no Reserve, Average Recorded Investment	0	0
Total Impaired, Average Recorded Investment, Total	0	0
Impaired Loans Receivable, Interest Paid YTD [Abstract]
Total Impaired with Reserve, Interest Paid YTD	0	0
Total Impaired with no Reserve, Interest Paid YTD	0	0
Total Impaired, Interest Paid YTD	0	0
Construction and Land [Member] | Substandard [Member]
Loans and Leases Receivable [Abstract]
At December 31, 2016	0		0
Construction and Land [Member] | Watch [Member]
Loans and Leases Receivable [Abstract]
At December 31, 2016	0		0
Construction and Land [Member] | Pass [Member]
Loans and Leases Receivable [Abstract]
At December 31, 2016	25,491,000		13,361,000
Commercial Real Estate [Member]
Loans and Leases Receivable [Abstract]
At December 31, 2016	223,553,000		225,522,000
Impaired Loans Receivable, Recorded Investment [Abstract]
Total Impaired, with Reserve, Recorded Investment	9,000		2,493,000
Total Impaired, with no Reserve, Recorded Investment	365,000		392,000
Total Impaired, Recorded Investment	374,000		2,885,000
Impaired Loans Receivable, Unpaid Principal Balance [Abstract]
Total Impaired with Reserve, Unpaid Principal Balance	418,000		2,902,000
Total Impaired with no Reserve, Unpaid Principal Balance	365,000		392,000
Total Impaired, Unpaid Principal Balance, Total	783,000		3,294,000
Impaired Loans Receivable, Reserve [Abstract]
Total Impaired with Reserve, Reserve	9,000		67,000
Total Impaired with no Reserve, Reserve	0		0
Impaired Loans, Reserve	9,000		67,000
Impaired Loans Receivable, Cumulative Charge Offs [Abstract]
Total Impaired with Reserve, Cumulative Charge-offs	409,000		409,000
Total Impaired with no Reserve, Cumulative Charge-offs	0		0
Total Impaired, Cumulative Charge-offs	409,000		409,000
Impaired Loans Receivable, Average Recorded Investment [Abstract]
Total Impaired with Reserve, Average Recorded Investment	13,000	30,000
Total Impaired with no Reserve, Average Recorded Investment	380,000	438,000
Total Impaired, Average Recorded Investment, Total	393,000	468,000
Impaired Loans Receivable, Interest Paid YTD [Abstract]
Total Impaired with Reserve, Interest Paid YTD	0	0
Total Impaired with no Reserve, Interest Paid YTD	9,000	7,000
Total Impaired, Interest Paid YTD	9,000	7,000
Total impaired loans including troubled debt restructurings	290,000		2,776,000
Commercial Real Estate [Member] | Substandard [Member]
Loans and Leases Receivable [Abstract]
At December 31, 2016	918,000		678,000
Commercial Real Estate [Member] | Watch [Member]
Loans and Leases Receivable [Abstract]
At December 31, 2016	1,442,000		4,343,000
Commercial Real Estate [Member] | Pass [Member]
Loans and Leases Receivable [Abstract]
At December 31, 2016	221,193,000		220,501,000
Consumer [Member]
Loans and Leases Receivable [Abstract]
At December 31, 2016	662,000		433,000
Impaired Loans Receivable, Recorded Investment [Abstract]
Total Impaired, with Reserve, Recorded Investment	0		0
Total Impaired, with no Reserve, Recorded Investment	0		0
Total Impaired, Recorded Investment	0		0
Impaired Loans Receivable, Unpaid Principal Balance [Abstract]
Total Impaired with Reserve, Unpaid Principal Balance	0		0
Total Impaired with no Reserve, Unpaid Principal Balance	0		0
Total Impaired, Unpaid Principal Balance, Total	0		0
Impaired Loans Receivable, Reserve [Abstract]
Total Impaired with Reserve, Reserve	0		0
Total Impaired with no Reserve, Reserve	0		0
Impaired Loans, Reserve	0		0
Impaired Loans Receivable, Cumulative Charge Offs [Abstract]
Total Impaired with Reserve, Cumulative Charge-offs	0		0
Total Impaired with no Reserve, Cumulative Charge-offs	0		0
Total Impaired, Cumulative Charge-offs	0		0
Impaired Loans Receivable, Average Recorded Investment [Abstract]
Total Impaired with Reserve, Average Recorded Investment	0	0
Total Impaired with no Reserve, Average Recorded Investment	0	0
Total Impaired, Average Recorded Investment, Total	0	0
Impaired Loans Receivable, Interest Paid YTD [Abstract]
Total Impaired with Reserve, Interest Paid YTD	0	0
Total Impaired with no Reserve, Interest Paid YTD	0	0
Total Impaired, Interest Paid YTD	0	0
Consumer [Member] | Substandard [Member]
Loans and Leases Receivable [Abstract]
At December 31, 2016	0		0
Consumer [Member] | Watch [Member]
Loans and Leases Receivable [Abstract]
At December 31, 2016	0		0
Consumer [Member] | Pass [Member]
Loans and Leases Receivable [Abstract]
At December 31, 2016	662,000		433,000
Commercial Loans [Member]
Loans and Leases Receivable [Abstract]
At December 31, 2016	31,081,000		32,810,000
Impaired Loans Receivable, Recorded Investment [Abstract]
Total Impaired, with Reserve, Recorded Investment	0		0
Total Impaired, with no Reserve, Recorded Investment	1,000		18,000
Total Impaired, Recorded Investment	1,000		18,000
Impaired Loans Receivable, Unpaid Principal Balance [Abstract]
Total Impaired with Reserve, Unpaid Principal Balance	0		0
Total Impaired with no Reserve, Unpaid Principal Balance	1,000		18,000
Total Impaired, Unpaid Principal Balance, Total	1,000		18,000
Impaired Loans Receivable, Reserve [Abstract]
Total Impaired with Reserve, Reserve	0		0
Total Impaired with no Reserve, Reserve	0		0
Impaired Loans, Reserve	0		0
Impaired Loans Receivable, Cumulative Charge Offs [Abstract]
Total Impaired with Reserve, Cumulative Charge-offs	0		0
Total Impaired with no Reserve, Cumulative Charge-offs	0		0
Total Impaired, Cumulative Charge-offs	0		0
Impaired Loans Receivable, Average Recorded Investment [Abstract]
Total Impaired with Reserve, Average Recorded Investment	0	0
Total Impaired with no Reserve, Average Recorded Investment	11,000	26,000
Total Impaired, Average Recorded Investment, Total	11,000	26,000
Impaired Loans Receivable, Interest Paid YTD [Abstract]
Total Impaired with Reserve, Interest Paid YTD	0	0
Total Impaired with no Reserve, Interest Paid YTD	1,000	0
Total Impaired, Interest Paid YTD	1,000	$ 0
Commercial Loans [Member] | Substandard [Member]
Loans and Leases Receivable [Abstract]
At December 31, 2016	875,000		889,000
Commercial Loans [Member] | Watch [Member]
Loans and Leases Receivable [Abstract]
At December 31, 2016	608,000		906,000
Commercial Loans [Member] | Pass [Member]
Loans and Leases Receivable [Abstract]
At December 31, 2016	$ 29,598,000		$ 31,015,000

Loans Receivable, Part V (Detai

Loans Receivable, Part V (Details)	3 Months Ended		6 Months Ended	12 Months Ended
	Jun. 30, 2019USD ($)Loan	Jun. 30, 2018USD ($)Loan	Jun. 30, 2019USD ($)LoanPayment	Dec. 31, 2018USD ($)Loan
Troubled Debt Restructuring Note, Debtor [Abstract]
Amount of troubled debt restructuring	$ 4,140,000		$ 4,140,000	$ 6,732,000
Total number of troubled debt restructurings | Loan			11	12
Period of principal forbearance, reduction in interest rate or both included in typical restructured terms			0 months
Valuation allowance with respect to troubled debt restructurings	9,000		$ 9,000	$ 67,000
Minimum number of consecutive contractual payments received prior to consideration for a return to accrual status | Payment			6
Troubled Debt Restructurings by Concession Type [Abstract]
Loans Receivable, Modifications, Loans Performing in Accordance with Modified Terms	$ 3,646,000		$ 3,646,000	$ 6,186,000
Number of loans performing in accordance with modified terms | Loan	9		9	10
Loans Receivable, Modifications, Loans in Default	$ 494,000		$ 494,000	$ 546,000
Number of Loans in Default | Loan	2		2	2
Loans Receivable, Modifications, Total	$ 4,140,000		$ 4,140,000	$ 6,732,000
Number of Loans, Total | Loan	11		11	12
Data on Troubled Debt Restructuring [Abstract]
Loans modified as a troubled debt restructure
Number of loans modified as a troubled debt restructuring | Loan
Non accrual Loans [Abstract]
Total non-accrual loans	$ 5,685,000		$ 5,685,000	$ 6,555,000
Ratio of total non-accrual loans to total loans, net of allowance			0.41%	0.48%
Ratio of total non-accrual loans to total assets			0.28%	0.34%
Accruing [Member]
Troubled Debt Restructuring Note, Debtor [Abstract]
Amount of troubled debt restructuring	3,021,000		$ 3,021,000	$ 5,499,000
Total number of troubled debt restructurings | Loan			3	4
Non-Accruing [Member]
Troubled Debt Restructuring Note, Debtor [Abstract]
Amount of troubled debt restructuring	1,119,000		$ 1,119,000	$ 1,233,000
Total number of troubled debt restructurings | Loan			8	8
Interest Reduction and Principal Forbearance [Member]
Troubled Debt Restructurings by Concession Type [Abstract]
Loans Receivable, Modifications, Loans Performing in Accordance with Modified Terms	$ 3,316,000		$ 3,316,000	$ 5,848,000
Number of loans performing in accordance with modified terms | Loan	6		6	7
Loans Receivable, Modifications, Loans in Default	$ 494,000		$ 494,000	$ 546,000
Number of Loans in Default | Loan	2		2	2
Loans Receivable, Modifications, Total	$ 3,810,000		$ 3,810,000	$ 6,394,000
Number of Loans, Total | Loan	8		8	9
Interest Reduction [Member]
Troubled Debt Restructurings by Concession Type [Abstract]
Loans Receivable, Modifications, Loans Performing in Accordance with Modified Terms	$ 330,000		$ 330,000	$ 338,000
Number of loans performing in accordance with modified terms | Loan	3		3	3
Loans Receivable, Modifications, Loans in Default	$ 0		$ 0	$ 0
Number of Loans in Default | Loan	0		0	0
Loans Receivable, Modifications, Total	$ 330,000		$ 330,000	$ 338,000
Number of Loans, Total | Loan	3		3	3
Residential Real Estate [Member] | One-to-Four Family [Member]
Troubled Debt Restructuring Note, Debtor [Abstract]
Amount of troubled debt restructuring	$ 3,509,000		$ 3,509,000	$ 3,584,000
Total number of troubled debt restructurings | Loan			7	7
Non accrual Loans [Abstract]
Total non-accrual loans	4,249,000		$ 4,249,000	$ 4,902,000
Residential Real Estate [Member] | One-to-Four Family [Member] | Accruing [Member]
Troubled Debt Restructuring Note, Debtor [Abstract]
Amount of troubled debt restructuring	2,740,000		$ 2,740,000	$ 2,740,000
Total number of troubled debt restructurings | Loan			2	2
Residential Real Estate [Member] | One-to-Four Family [Member] | Non-Accruing [Member]
Troubled Debt Restructuring Note, Debtor [Abstract]
Amount of troubled debt restructuring	769,000		$ 769,000	$ 844,000
Total number of troubled debt restructurings | Loan			5	5
Residential Real Estate [Member] | Multi Family [Member]
Troubled Debt Restructuring Note, Debtor [Abstract]
Amount of troubled debt restructuring	341,000		$ 341,000	$ 372,000
Total number of troubled debt restructurings | Loan			2	2
Non accrual Loans [Abstract]
Total non-accrual loans	1,261,000		$ 1,261,000	$ 1,309,000
Residential Real Estate [Member] | Multi Family [Member] | Accruing [Member]
Troubled Debt Restructuring Note, Debtor [Abstract]
Amount of troubled debt restructuring	0		$ 0	$ 0
Total number of troubled debt restructurings | Loan			0	0
Residential Real Estate [Member] | Multi Family [Member] | Non-Accruing [Member]
Troubled Debt Restructuring Note, Debtor [Abstract]
Amount of troubled debt restructuring	341,000		$ 341,000	$ 372,000
Total number of troubled debt restructurings | Loan			2	2
Residential Real Estate [Member] | Home Equity [Member]
Non accrual Loans [Abstract]
Total non-accrual loans	81,000		$ 81,000	$ 201,000
Construction and Land [Member]
Non accrual Loans [Abstract]
Total non-accrual loans	0		0	0
Commercial Real Estate [Member]
Troubled Debt Restructuring Note, Debtor [Abstract]
Amount of troubled debt restructuring	290,000		$ 290,000	$ 2,776,000
Total number of troubled debt restructurings | Loan			2	3
Non accrual Loans [Abstract]
Total non-accrual loans	93,000		$ 93,000	$ 125,000
Commercial Real Estate [Member] | Accruing [Member]
Troubled Debt Restructuring Note, Debtor [Abstract]
Amount of troubled debt restructuring	281,000		$ 281,000	$ 2,759,000
Total number of troubled debt restructurings | Loan			1	2
Commercial Real Estate [Member] | Non-Accruing [Member]
Troubled Debt Restructuring Note, Debtor [Abstract]
Amount of troubled debt restructuring	9,000		$ 9,000	$ 17,000
Total number of troubled debt restructurings | Loan			1	1
Consumer [Member]
Non accrual Loans [Abstract]
Total non-accrual loans	0		$ 0	$ 0
Commercial Loans [Member]
Non accrual Loans [Abstract]
Total non-accrual loans	$ 1,000		$ 1,000	$ 18,000

Real Estate Owned (Details)

Real Estate Owned (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018	Dec. 31, 2017
Real Estate [Abstract]
Real estate owned, net	$ 1,684	$ 2,378	$ 2,152	$ 4,558
Transferred from loans receivable	743	318
Sales	(1,201)	(2,197)
Write downs	0	(301)
Other	(10)	$ 0
Mortgage loans in process of foreclosure	2,300		2,200
One-to-Four Family [Member]
Real Estate [Abstract]
Real estate owned, net	250		163
Multi Family [Member]
Real Estate [Abstract]
Real estate owned, net	0		0
Construction and Land [Member]
Real Estate [Abstract]
Real estate owned, net	2,714		3,327
Commercial Real Estate [Member]
Real Estate [Abstract]
Real estate owned, net	0		300
Real Estate Owned Prior To Valuation Allowance [Member]
Real Estate [Abstract]
Real estate owned, net	2,964		3,790
Valuation Allowance, Real Estate Owned [Member]
Real Estate [Abstract]
Valuation allowance at end of period	$ (1,280)		$ (1,638)

Mortgage Servicing Rights (Deta

Mortgage Servicing Rights (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Mortgage servicing rights [Roll Forward]
Mortgage servicing rights at beginning of the period	$ 109	$ 888
Additions	175	244
Amortization	(29)	(89)
Sales	0	0
Mortgage servicing rights at end of the period	255	1,043
Valuation allowance at end of period	(80)	0
Mortgage servicing rights at end of the period, net	175	1,043
Estimated future servicing rights amortization expense by period [Abstract]
2019	20
2020	34
2021	30
2022	27
2023	23
Thereafter	41
Total	175
MSR Sales [Abstract]
Loans originated for sale	1,270	1,200
Sales of loans held for sale	1,230	1,300
Generated mortgage banking income	57,500	56,300
Loans sold on a servicing retained basis	34,100	147,900	$ 14,100
Sold mortgage servicing rights	0	0
Sales Of Mortgage Servicing Rights	0
Mortgage servicing rights book value	0	0
Mortgage servicing rights sold	0	0
Gain on sale of MSR	$ 0	$ 0

Deposits (Details)

Deposits (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Deposits [Abstract]
Time deposits, greater than $250,000	$ 69,700	$ 60,100
Summary of the contractual maturities of time deposits [Abstract]
Within one year	538,390
More than one to two years	202,785
More than two to three years	1,459
More than three to four years	2,110
More than four through five years	907
Time deposits	$ 745,651	$ 735,873

Borrowings (Details)

Borrowings (Details) $ in Thousands	Jun. 30, 2019USD ($)Agreement	Dec. 31, 2018USD ($)
Debt Instruments [Abstract]
Long-term borrowings	$ 518,681	$ 435,046
Percentage of carrying value of qualifying of one-to-four family loans	80.00%
Percentage of carrying value of qualifying home equity loans	75.00%
Percentage of carrying value of qualifying of multi-family loans	64.00%
FHLBC stock as collateral	$ 22,300	19,400
Long Term FHLB maturing 2029 [Member]
Debt Instruments [Abstract]
Long-term borrowings	$ 165,000	$ 0
Weighted average rate	1.61%	0.00%
Repurchase Agreements [Member]
Debt Instruments [Abstract]
Short-term borrowings	$ 23,681	$ 5,046
Weighted average rate	5.28%	5.39%
Long Term Debt Maturing 2027 [Member] | Federal Home Loan Bank, Chicago Advances [Member]
Debt Instruments [Abstract]
Long-term borrowings	$ 75,000	$ 175,000
Weighted average rate	1.56%	1.38%
Long Term Debt Maturing 2028 [Member] | Federal Home Loan Bank, Chicago Advances [Member]
Debt Instruments [Abstract]
Long-term borrowings	$ 255,000	$ 255,000
Weighted average rate	2.37%	2.37%
Long Term Debt Maturing 05/2027 [Member]
Debt Instruments [Abstract]
Long-term borrowings	$ 50,000
FHLB, year of maturity	2027
Number of Federal Home Loan Bank Advances | Agreement	1
Long Term Debt Maturing 05/2027 [Member] | Minimum [Member]
Debt Instruments [Abstract]
Interest rate	1.24%
Long Term Debt Maturing 05/2027 [Member] | Maximum [Member]
Debt Instruments [Abstract]
Interest rate	1.24%
Long Term Debt Maturing 05/2027 [Member] | Federal Home Loan Bank, Chicago Advances [Member]
Debt Instruments [Abstract]
Long-term borrowings	$ 518,681	$ 435,046
Weighted average rate	2.14%	2.01%
Long Term Debt Maturing 03/28/2028 [Member]
Debt Instruments [Abstract]
Long-term borrowings	$ 25,000
FHLB, year of maturity	2028
Number of Federal Home Loan Bank Advances | Agreement	1
Long Term Debt Maturing 03/28/2028 [Member] | Minimum [Member]
Debt Instruments [Abstract]
Interest rate	2.16%
Long Term Debt Maturing 03/28/2028 [Member] | Maximum [Member]
Debt Instruments [Abstract]
Interest rate	2.16%
Long Term Debt Maturing 06/2027 [Member]
Debt Instruments [Abstract]
Long-term borrowings	$ 50,000
FHLB, year of maturity	2027
Number of Federal Home Loan Bank Advances | Agreement	1
Long Term Debt Maturing 06/2027 [Member] | Minimum [Member]
Debt Instruments [Abstract]
Interest rate	1.23%
Long Term Debt Maturing 06/2027 [Member] | Maximum [Member]
Debt Instruments [Abstract]
Interest rate	1.23%
Long Term Debt Maturing 08/2027 [Member]
Debt Instruments [Abstract]
Long-term borrowings	$ 25,000
FHLB, year of maturity	2027
Number of Federal Home Loan Bank Advances | Agreement	1
Long Term Debt Maturing 08/2027 [Member] | Minimum [Member]
Debt Instruments [Abstract]
Interest rate	1.23%
Long Term Debt Maturing 08/2027 [Member] | Maximum [Member]
Debt Instruments [Abstract]
Interest rate	1.23%
Long Term Debt Maturing 12/2027 [Member]
Debt Instruments [Abstract]
Long-term borrowings	$ 50,000
FHLB, year of maturity	2027
Number of Federal Home Loan Bank Advances | Agreement	1
Long Term Debt Maturing 12/2027 [Member] | Minimum [Member]
Debt Instruments [Abstract]
Interest rate	1.73%
Long Term Debt Maturing 12/2027 [Member] | Maximum [Member]
Debt Instruments [Abstract]
Interest rate	1.73%
Long Term Debt Maturing 03/06/2028 [Member]
Debt Instruments [Abstract]
Long-term borrowings	$ 55,000
FHLB, year of maturity	2028
Number of Federal Home Loan Bank Advances | Agreement	2
Long Term Debt Maturing 03/06/2028 [Member] | Minimum [Member]
Debt Instruments [Abstract]
Interest rate	2.27%
Long Term Debt Maturing 03/06/2028 [Member] | Maximum [Member]
Debt Instruments [Abstract]
Interest rate	2.27%
Long Term FHLB Borrowing due 09/25/2028 [Member]
Debt Instruments [Abstract]
Long-term borrowings	$ 50,000
Number of Federal Home Loan Bank Advances | Agreement	1
Long Term FHLB Borrowing due 09/25/2028 [Member] | Minimum [Member]
Debt Instruments [Abstract]
Interest rate	2.57%
Long Term FHLB Borrowing due 09/25/2028 [Member] | Maximum [Member]
Debt Instruments [Abstract]
Interest rate	2.57%

Regulatory Capital (Details)

Regulatory Capital (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Actual and Required Capital Amounts and Ratios [Abstract]
Total capital (to risk-weighted assets)	$ 398,062	$ 414,566
Tier I capital (to risk-weighted assets)		401,317
Common Equity Tier 1 Capital (to risk-weighted assets)	385,445	401,317
Tier I capital (to average assets)	$ 385,445	$ 401,317
Total capital (to risk-weighted assets) Ratio	26.12%	28.22%
Tier I capital (to risk-weighted assets) Ratio		27.32%
Common Equity Tier 1 capital (to risk-weighted assets) Ratio	25.29%	27.32%
Tier I capital (to average assets) Ratio	19.44%	21.06%
Total capital (to risk-weighted assets), For Capital Adequacy Purposes	$ 121,915	$ 117,506
Tier I capital (to risk-weighted assets), For Capital Adequacy Purposes		88,130
Common Equity Tier I capital (to risk weighted assets), For Capital Adequacy Purposes	68,577	66,097
Tier I capital (to average assets), For Capital Adequacy Purposes	$ 79,296	$ 76,214
Total capital (to risk-weighted assets), For Capital Adequacy Ratio	8.00%	8.00%
Tier I capital (to risk-weighted assets), For Capital Adequacy Ratio		6.00%
Common Equity Tier I capital (to risk-weighted), For Capital Adequacy Ratio	4.50%	4.50%
Tier I capital (to average assets), For Capital Adequacy Ratio	4.00%	4.00%
Total capital (to risk-weighted assets), Minimum Capital Adequacy with Capital Buffer	$ 160,013	$ 145,046
Tier I capital (to risk weighted assets), Minimum Capital Adequacy with Capital Buffer		115,670
Common Equity Tier I capital (to risk weighted assets) Minimum Capital Adequacy with Capital Buffer	$ 106,675	$ 93,638
Total capital (to risk-weighted assets), Minimum Capital Adequacy with Capital Buffer Ratio	10.50%	9.875%
Tier I capital (to risk weighted assets), Minimum Capital Adequacy with Capital Buffer Ratio		7.875%
Common Equity Tier I capital (to risk weighted), Minimum Capital Adequacy with Capital Buffer Ratio	7.00%	6.375%
Waterstone Bank [Member]
Actual and Required Capital Amounts and Ratios [Abstract]
Total capital (to risk-weighted assets)	$ 343,730	$ 395,783
Tier I capital (to risk-weighted assets)	331,113	382,534
Common Equity Tier 1 Capital (to risk-weighted assets)	331,113	382,534
Tier I capital (to average assets)	331,113	382,534
State of Wisconsin (to total assets)	$ 331,113	$ 382,534
Total capital (to risk-weighted assets) Ratio	22.58%	26.95%
Tier I capital (to risk-weighted assets) Ratio	21.75%	26.05%
Common Equity Tier 1 capital (to risk-weighted assets) Ratio	21.75%	26.05%
Tier I capital (to average assets) Ratio	16.70%	20.08%
State of Wisconsin (to total assets) Ratio	16.47%	20.01%
Total capital (to risk-weighted assets), For Capital Adequacy Purposes	$ 121,803	$ 117,490
Tier I capital (to risk-weighted assets), For Capital Adequacy Purposes	91,352	88,118
Common Equity Tier I capital (to risk weighted assets), For Capital Adequacy Purposes	68,514	66,088
Tier I capital (to average assets), For Capital Adequacy Purposes	79,296	76,214
State of Wisconsin (to total assets), For Capital Adequacy Purposes	$ 120,660	$ 114,712
Total capital (to risk-weighted assets), For Capital Adequacy Ratio	8.00%	8.00%
Tier I capital (to risk-weighted assets), For Capital Adequacy Ratio	6.00%	6.00%
Common Equity Tier I capital (to risk-weighted), For Capital Adequacy Ratio	4.50%	4.50%
Tier I capital (to average assets), For Capital Adequacy Ratio	4.00%	4.00%
State of Wisconsin (to total assets), For Capital Adequacy Ratio	6.00%	6.00%
Total capital (to risk-weighted assets), Minimum Capital Adequacy with Capital Buffer	$ 159,867	$ 145,027
Tier I capital (to risk weighted assets), Minimum Capital Adequacy with Capital Buffer	129,416	115,655
Common Equity Tier I capital (to risk weighted assets) Minimum Capital Adequacy with Capital Buffer	$ 106,578	$ 93,625
Total capital (to risk-weighted assets), Minimum Capital Adequacy with Capital Buffer Ratio	10.50%	9.875%
Tier I capital (to risk weighted assets), Minimum Capital Adequacy with Capital Buffer Ratio	8.50%	7.875%
Common Equity Tier I capital (to risk weighted), Minimum Capital Adequacy with Capital Buffer Ratio	7.00%	6.375%
Total capital (to risk-weighted assets), To Be Well-Capitalized Under Prompt Corrective Action Provisions	$ 152,254	$ 146,863
Tier I capital (to risk-weighted assets), To Be Well-Capitalized Under Prompt Corrective Action Provisions	121,803	117,490
Common Equity Tier I capital (to risk-weighted assets), To Be Well-Capitalized Under Prompt Corrective Action Provisions	98,965	95,461
Tier I capital (to average assets), To Be Well-Capitalized Under Prompt Corrective Action Provisions	$ 99,120	$ 95,268
Total capital (to risk-weighted assets), To Be Well-Capitalized Under Prompt Corrective Action Provisions Ratio	10.00%	10.00%
Tier I capital (to risk-weighted assets), To Be Well-Capitalized Under Prompt Corrective Action Provisions Ratio	8.00%	8.00%
Common Equity Tier I capital (to risk-weighted) , To Be Well-Capitalized Under Prompt Corrective Action Provisions Ratio	6.50%	6.50%
Tier I capital (to average assets), To Be Well-Capitalized Under Prompt Corrective Action Provisions Ratio	5.00%	5.00%
Consolidated Waterstone Financial, Inc. [Member]
Actual and Required Capital Amounts and Ratios [Abstract]
Tier I capital (to risk-weighted assets)	$ 385,445
Tier I capital (to risk-weighted assets) Ratio	25.29%
Tier I capital (to risk-weighted assets), For Capital Adequacy Purposes	$ 91,436
Tier I capital (to risk-weighted assets), For Capital Adequacy Ratio	6.00%
Tier I capital (to risk weighted assets), Minimum Capital Adequacy with Capital Buffer	$ 129,534
Tier I capital (to risk weighted assets), Minimum Capital Adequacy with Capital Buffer Ratio	8.50%

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Taxes [Abstract]
Income tax expense	$ 3,143	$ 3,101	$ 5,125	$ 5,205
Income before income taxes	$ 12,786	$ 12,521	$ 21,310	$ 21,578
Effective tax rate			24.00%	24.10%

Offsetting of Assets and Liab_3

Offsetting of Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Repurchase Agreement [Abstract]
Long term repurchase agreements	$ 518,681	$ 435,046
Net Amount [Member]
Repurchase Agreement [Abstract]
Short-term, Repurchase Agreements	0	0
Repurchase Agreements	0	0
Gross Recognized Liabilities [Member]
Repurchase Agreement [Abstract]
Short-term, Repurchase Agreements	23,681	5,046
Repurchase Agreements	23,681	5,046
Gross Amounts Offset [Member]
Repurchase Agreement [Abstract]
Short-term, Repurchase Agreements	0	0
Repurchase Agreements	0	0
Net Amounts Presented [Member]
Repurchase Agreement [Abstract]
Short-term, Repurchase Agreements	23,681	5,046
Repurchase Agreements	23,681	5,046
Gross Amounts Not Offset [Member]
Repurchase Agreement [Abstract]
Short-term, Repurchase Agreements	23,681	5,046
Repurchase Agreements	$ 23,681	$ 5,046

Commitments, Off-Balance Shee_3

Commitments, Off-Balance Sheet Arrangements, and Contingent Liabilities (Details) - USD ($) $ in Thousands		6 Months Ended
		Jun. 30, 2019	Dec. 31, 2018
Fair Value, Off-Balance Sheet Arrangements, and Contingent Loss [Abstract]
Period of home equity loans available to the borrower		10 years
Maximum [Member]
Fair Value, Off-Balance Sheet Arrangements, and Contingent Loss [Abstract]
Period of commitments for loans extended to customers		90 days
Period of construction loans available to the borrower		1 year
Commitments to Extend Credit Under Amortizing Loans [Member]
Fair Value, Off-Balance Sheet Arrangements, and Contingent Loss [Abstract]
Off-balance sheet risks asset amount	[1]	$ 85,611	$ 33,762
Probable losses		0	0
Commitments to Extend Credit Under Home Equity Lines of Credit [Member]
Fair Value, Off-Balance Sheet Arrangements, and Contingent Loss [Abstract]
Off-balance sheet risks asset amount	[2]	14,742	14,903
Probable losses		0	0
Unused Portion of Construction Loans [Member]
Fair Value, Off-Balance Sheet Arrangements, and Contingent Loss [Abstract]
Off-balance sheet risks asset amount	[3]	60,028	79,776
Unused Portion of Business Lines of Credit [Member]
Fair Value, Off-Balance Sheet Arrangements, and Contingent Loss [Abstract]
Off-balance sheet risks asset amount		13,806	16,778
Standby Letters of Credit [Member]
Fair Value, Off-Balance Sheet Arrangements, and Contingent Loss [Abstract]
Off-balance sheet risks liability amount		161	860
Probable losses		$ 0	$ 0
[1]	Commitments for loans are extended to customers for up to 90 days after which they expire. Excludes commitments to originate loans held for sale, which are discussed in the following footnote.
[2]	Unused portions of home equity loans are available to the borrower for up to 10 years.
[3]	Unused portions of construction loans are available to the borrower for up to one year.

Derivative Financial Instrume_3

Derivative Financial Instruments (Details) $ in Millions	6 Months Ended
	Jun. 30, 2019USD ($)
Forward Commitments to Sell Mortgage Loans [Member]
Derivative [Abstract]
Aggregate notional amount of derivatives	$ 481
Gain (loss) reported as a component of other assets	1
Interest Rate Lock Commitments [Member]
Derivative [Abstract]
Aggregate notional amount of derivatives	277.4
Gain (loss) reported as a component of other assets	$ 3.3

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Basic and Diluted Earnings Per Share Calculations [Abstract]
Net income	$ 9,643	$ 9,420	$ 16,185	$ 16,373
Weighted average shares outstanding (in shares)	26,242	27,504	26,370	27,506
Effect of dilutive potential common shares (in shares)	170	238	202	284
Diluted weighted average shares outstanding (in shares)	26,412	27,742	26,572	27,790
Basic income per share (in dollars per share)	$ 0.37	$ 0.34	$ 0.61	$ 0.60
Diluted income per share (in dollars per share)	$ 0.37	$ 0.34	$ 0.61	$ 0.59

Fair Value Measurements, Fair V

Fair Value Measurements, Fair Value of Assets and Liabilities Measured On Recurring and Nonrecurring Basis (Details) - USD ($) $ in Thousands		Jun. 30, 2019	Dec. 31, 2018
Available for sale securities [Abstract]
Loans held for sale		$ 244,052	$ 141,616
Recurring [Member]
Available for sale securities [Abstract]
Mortgage-backed securities		38,534	41,631
Collateralized mortgage obligations, Government sponsored enterprise issued		75,864	74,955
Municipal securities		54,893	55,948
Other debt securities		13,571	13,186
Loans held for sale		244,052	141,616
Mortgage banking derivative assets		3,326	2,014
Mortgage banking derivatives liabilities		1,044	1,116
Recurring [Member] | Level 1 [Member]
Available for sale securities [Abstract]
Mortgage-backed securities		0	0
Collateralized mortgage obligations, Government sponsored enterprise issued		0	0
Municipal securities		0	0
Other debt securities		0	0
Loans held for sale		0	0
Mortgage banking derivative assets		0	0
Mortgage banking derivatives liabilities		0	0
Recurring [Member] | Level 2 [Member]
Available for sale securities [Abstract]
Mortgage-backed securities		38,534	41,631
Collateralized mortgage obligations, Government sponsored enterprise issued		75,864	74,955
Municipal securities		54,893	55,948
Other debt securities		13,571	13,186
Loans held for sale		244,052	141,616
Mortgage banking derivative assets		0	0
Mortgage banking derivatives liabilities		0	0
Recurring [Member] | Level 3 [Member]
Available for sale securities [Abstract]
Mortgage-backed securities		0	0
Collateralized mortgage obligations, Government sponsored enterprise issued		0	0
Municipal securities		0	0
Other debt securities		0	0
Loans held for sale		0	0
Mortgage banking derivative assets		3,326	2,014
Mortgage banking derivatives liabilities		1,044	1,116
Non-Recurring [Member]
Available for sale securities [Abstract]
Impaired loans, net	[1]	598	2,876
Real estate owned		1,684	2,152
Mortgage Servicing Rights, Impaired, Valuation Allowance		159
Non-Recurring [Member] | Level 1 [Member]
Available for sale securities [Abstract]
Impaired loans, net	[1]	0	0
Real estate owned		0	0
Mortgage Servicing Rights, Impaired, Valuation Allowance		0
Non-Recurring [Member] | Level 2 [Member]
Available for sale securities [Abstract]
Impaired loans, net	[1]	0	0
Real estate owned		0	0
Mortgage Servicing Rights, Impaired, Valuation Allowance		0
Non-Recurring [Member] | Level 3 [Member]
Available for sale securities [Abstract]
Impaired loans, net	[1]	598	2,876
Real estate owned		1,684	$ 2,152
Mortgage Servicing Rights, Impaired, Valuation Allowance		$ 159
[1]	Represents collateral-dependent impaired loans, net, which are included in loans.

Fair Value Measurements, Fair_2

Fair Value Measurements, Fair Value of Assets Measured on Recurring Basis, Unobservable Input Reconciliation (Details) - Mortgage Banking Derivatives, Net [Member] - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Assets measured on recurring basis, unobservable input reconciliation [Roll Forward]
Beginning balance	$ 898	$ 2,004
Mortgage derivative gain (loss), net		719
Ending balance		$ 2,723
Recurring [Member]
Assets measured on recurring basis, unobservable input reconciliation [Roll Forward]
Mortgage derivative gain (loss), net	1,384
Ending balance	$ 2,282

Fair Value Measurements, Balanc

Fair Value Measurements, Balance Sheet Grouping (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Financial Assets [Abstract]
Securities available-for-sale	$ 182,862	$ 185,720
Loans held for sale	244,052	141,616
Financial Liabilities [Abstract]
Advance payments by borrowers for taxes	18,852	4,371
Carrying Amount [Member]
Financial Assets [Abstract]
Cash and cash equivalents	70,145	86,101
Securities available-for-sale	182,862	185,720
Loans held for sale	244,052	141,616
Loans receivable	1,370,727	1,379,148
FHLB stock	22,275	19,350
Accrued interest receivable	5,596	5,337
Mortgage servicing rights	175	109
Mortgage banking derivative assets	3,326	2,014
Financial Liabilities [Abstract]
Deposits	1,054,996	1,038,495
Advance payments by borrowers for taxes	18,852	4,371
Borrowings	518,681	435,046
Accrued interest payable	1,531	1,395
Mortgage banking derivative liabilities	1,044	1,116
Fair Value [Member]
Financial Assets [Abstract]
Cash and cash equivalents	70,145	86,101
Securities available-for-sale	182,862	185,720
Loans held for sale	244,052	141,616
Loans receivable	1,326,449	1,311,633
FHLB stock	22,275	19,350
Accrued interest receivable	5,596	5,337
Mortgage servicing rights	186	109
Mortgage banking derivative assets	3,326	2,014
Financial Liabilities [Abstract]
Deposits	1,055,534	1,038,544
Advance payments by borrowers for taxes	18,852	4,371
Borrowings	519,789	432,269
Accrued interest payable	1,531	1,395
Mortgage banking derivative liabilities	1,044	1,116
Fair Value [Member] | Level 1 [Member]
Financial Assets [Abstract]
Cash and cash equivalents	60,870	73,601
Securities available-for-sale	0	0
Loans held for sale	0	0
Loans receivable	0	0
FHLB stock	0	0
Accrued interest receivable	5,596	5,337
Mortgage servicing rights	0	0
Mortgage banking derivative assets	0	0
Financial Liabilities [Abstract]
Deposits	309,345	302,622
Advance payments by borrowers for taxes	18,852	4,371
Borrowings	0	0
Accrued interest payable	1,531	1,395
Mortgage banking derivative liabilities	0	0
Fair Value [Member] | Level 2 [Member]
Financial Assets [Abstract]
Cash and cash equivalents	9,275	12,500
Securities available-for-sale	182,862	185,720
Loans held for sale	244,052	141,616
Loans receivable	0	0
FHLB stock	22,275	19,350
Accrued interest receivable	0	0
Mortgage servicing rights	0	0
Mortgage banking derivative assets	0	0
Financial Liabilities [Abstract]
Deposits	746,189	735,922
Advance payments by borrowers for taxes	0	0
Borrowings	519,789	432,269
Accrued interest payable	0	0
Mortgage banking derivative liabilities	0	0
Fair Value [Member] | Level 3 [Member]
Financial Assets [Abstract]
Cash and cash equivalents	0	0
Securities available-for-sale	0	0
Loans held for sale	0	0
Loans receivable	1,326,449	1,311,633
FHLB stock	0	0
Accrued interest receivable	0	0
Mortgage servicing rights	186	109
Mortgage banking derivative assets	3,326	2,014
Financial Liabilities [Abstract]
Deposits	0	0
Advance payments by borrowers for taxes	0	0
Borrowings	0	0
Accrued interest payable	0	0
Mortgage banking derivative liabilities	$ 1,044	$ 1,116

Segment Reporting (Details)

Segment Reporting (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019USD ($)	Jun. 30, 2018USD ($)	Jun. 30, 2019USD ($)Segment	Jun. 30, 2018USD ($)	Dec. 31, 2018USD ($)
Segment Reporting [Abstract]
Number of reportable segments | Segment			2
Net Income (Loss) [Abstract]
Net interest income	$ 12,981	$ 13,720	$ 25,917	$ 26,861
Provision for loan losses	30	(220)	(650)	(1,100)
Net interest income (loss) after provision for loan losses	12,951	13,940	26,567	27,961
Noninterest income	35,190	33,318	59,447	58,501
Noninterest expenses [Abstract]
Compensation, payroll taxes, and other employee benefits	27,074	26,234	47,713	47,217
Occupancy, office furniture and equipment	2,680	2,605	5,456	5,244
FDIC insurance premiums	879	904	1,684	1,892
Advertising Expense	963	1,000	1,921	1,860
Information Technology and Data Processing	869	623	1,638	1,248
Communication	353	435	681	817
Professional Fees	789	647	1,484	1,347
Real estate owned	19	(126)	51	191
Segment Loan Processing Expense	879	904	1,684	1,892
Other	1,729	2,415	4,076	5,068
Total noninterest expenses	35,355	34,737	64,704	64,884
Income (loss) before income taxes	12,786	12,521	21,310	21,578
Income tax expense	3,143	3,101	5,125	5,205
Net income	9,643	9,420	16,185	16,373
Total assets	2,015,138	1,877,230	2,015,138	1,877,230	$ 1,915,381
Community Banking [Member]
Noninterest expenses [Abstract]
Advertising Expense	220	241	401	381
Information Technology and Data Processing	493	400	950	835
Communication	93	121	175	221
Professional Fees	160	180	428	371
Segment Loan Processing Expense	0	0	0	0
Mortgage Banking [Member]
Noninterest expenses [Abstract]
Advertising Expense	743	759	1,520	1,479
Information Technology and Data Processing	372	224	680	410
Communication	260	314	506	596
Professional Fees	620	458	1,046	972
Segment Loan Processing Expense	879	904	1,684	1,892
Holding Company and Other [Member]
Net Income (Loss) [Abstract]
Net interest income	(20)	13	(8)	42
Provision for loan losses	0	0	0	0
Net interest income (loss) after provision for loan losses	(20)	13	(8)	42
Noninterest income	(253)	(366)	(448)	(853)
Noninterest expenses [Abstract]
Compensation, payroll taxes, and other employee benefits	(176)	(145)	(353)	(291)
Occupancy, office furniture and equipment	0	0	0	0
Advertising Expense	0	0	0	0
Information Technology and Data Processing	4	(1)	8	3
Communication	0	0	0	0
Professional Fees	9	9	10	4
Real estate owned	0	0	0	0
Segment Loan Processing Expense	0	0	0	0
Other	(92)	(207)	(146)	(536)
Total noninterest expenses	(255)	(344)	(481)	(820)
Income (loss) before income taxes	(18)	(9)	25	9
Income tax expense	4	(2)	13	(1)
Net income	(22)	(7)	12	10
Total assets	(234,178)	(180,615)	(234,178)	(180,615)
Operating Segments [Member]
Noninterest expenses [Abstract]
Other	1,729	2,415	4,076	5,068
Operating Segments [Member] | Community Banking [Member]
Net Income (Loss) [Abstract]
Net interest income	13,530	13,747	26,662	27,051
Provision for loan losses	0	(250)	(700)	(1,150)
Net interest income (loss) after provision for loan losses	13,530	13,997	27,362	28,201
Noninterest income	1,079	1,137	1,960	2,076
Noninterest expenses [Abstract]
Compensation, payroll taxes, and other employee benefits	4,671	4,301	9,427	9,189
Occupancy, office furniture and equipment	944	813	1,916	1,639
Real estate owned	19	(126)	51	191
Other	635	658	1,124	1,443
Total noninterest expenses	7,235	6,588	14,472	14,270
Income (loss) before income taxes	7,374	8,546	14,850	16,007
Income tax expense	1,594	1,970	3,281	3,638
Net income	5,780	6,576	11,569	12,369
Total assets	1,958,339	1,878,299	1,958,339	1,878,299
Operating Segments [Member] | Mortgage Banking [Member]
Net Income (Loss) [Abstract]
Net interest income	(529)	(40)	(737)	(232)
Provision for loan losses	30	30	50	50
Net interest income (loss) after provision for loan losses	(559)	(70)	(787)	(282)
Noninterest income	34,364	32,547	57,935	57,278
Noninterest expenses [Abstract]
Compensation, payroll taxes, and other employee benefits	22,579	22,078	38,639	38,319
Occupancy, office furniture and equipment	1,736	1,792	3,540	3,605
Real estate owned	0	0	0	0
Other	1,186	1,964	3,098	4,161
Total noninterest expenses	28,375	28,493	50,713	51,434
Income (loss) before income taxes	5,430	3,984	6,435	5,562
Income tax expense	1,545	1,133	1,831	1,568
Net income	3,885	2,851	4,604	3,994
Total assets	$ 290,977	$ 179,546	$ 290,977	$ 179,546

Leases (Details)

Leases (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019USD ($)Location	Jun. 30, 2019USD ($)Location	Dec. 31, 2018USD ($)
Leases [Abstract]
Number of branch locations | Location	2	2
Components of Lease Expense [Abstract]
Operating lease cost	$ 804	$ 1,562
Variable cost	156	416
Short-term lease cost	294	527
Total	1,254	2,505
Other Information Related to Operating Leases [Abstract]
Operating cash flows from operating leases		1,708
Right-of-use assets	$ 9,100	$ 9,100
Weighted average remaining lease term - operating leases, in years	3 years 4 months 24 days	3 years 4 months 24 days
Weighted average discount rate - operating leases	5.70%	5.70%
Operating Lease Liabilities, Payments Due [Abstract]
One year or less	$ 3,264	$ 3,264
More than one year through two years	2,712	2,712
More than two years through three years	1,812	1,812
More than three years through four years	1,406	1,406
More than four years through five years	881	881
More than five years	992	992
Total lease payments	11,067	11,067
Present value discount	(1,452)	(1,452)
Lease liability	9,615	9,615
ASC Topic 842 [Member]
Other Information Related to Operating Leases [Abstract]
Right-of-use assets			$ 10,490
Initial recognition of lease liabilities			$ 10,979
Plan [Member]
Other Information Related to Operating Leases [Abstract]
Right-of-use assets	28	28
Operating Lease Liabilities, Payments Due [Abstract]
Lease liability	$ 28	$ 28