Waterstone Financial (WSBF) 10-K 6 Mar 15 2014 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2014	Feb. 28, 2015	Jun. 30, 2014
Document and Entity Information [Abstract]
Entity Registrant Name	Waterstone Financial, Inc.
Entity Central Index Key	1569994
Current Fiscal Year End Date	-19
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Public Float			$392.70
Entity Common Stock, Shares Outstanding		34,418,121
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Document Type	10-K
Amendment Flag	FALSE
Document Period End Date	31-Dec-14

Consolidated_Statements_of_Fin

Consolidated Statements of Financial Condition (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Assets
Cash	$145,846	$428,832
Federal funds sold	21,268	93
Interest-earning deposits in other financial institutions and other short term investments	5,706	244
Cash and cash equivalents	172,820	429,169
Securities available for sale (at fair value)	273,443	213,418
Loans held for sale (at fair value)	125,073	97,021
Loans receivable	1,094,990	1,092,676
Less: Allowance for loan losses	18,706	24,264
Loans receivable, net	1,076,284	1,068,412
Office properties and equipment, net	25,562	27,090
Federal Home Loan Bank stock (at cost)	17,500	17,500
Cash surrender value of life insurance	50,848	39,378
Real estate owned	18,706	22,663
Prepaid expenses and other assets	23,144	32,388
Total assets	1,783,380	1,947,039
Liabilities:
Demand deposits	92,162	93,275
Money market and savings deposits	119,163	513,716
Time deposits	652,635	637,750
Total deposits	863,960	1,244,741
Short-term borrowings	0	21,197
Long-term borrowings	434,000	434,000
Advance payments by borrowers for taxes	4,991	2,482
Other liabilities	30,192	30,147
Total liabilities	1,333,143	1,732,567
Shareholders' equity:
Preferred stock (par value $.01 per share) Authorized 20,000,000 shares, no shares issued	0	0
Common stock (par value $.01 per share), Authorized - 100,000,000 shares in 2014 and 200,000,000 in 2013, Issued - 34,420,094 in 2014 and 34,073,670 in 2013, Outstanding - 34,420,094 in 2014 and 31,349,317 in 2013	344	341
Additional paid-in capital	313,894	110,480
Retained earnings	157,304	151,195
Unearned ESOP shares	-22,552	-854
Accumulated other comprehensive income, net of taxes	1,247	-1,429
Treasury shares (2,724,353 shares), at cost	0	-45,261
Total shareholders' equity	450,237	214,472
Total liabilities and shareholders' equity	$1,783,380	$1,947,039

Consolidated_Statements_of_Fin1

Consolidated Statements of Financial Condition (Parenthetical) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified
Assets
Securities held to maturity	$0	$0
Shareholders' equity:
Preferred stock - par value (in dollars per share)	$0.01	$0.01
Preferred stock - shares authorized (in shares)	50,000,000	20,000,000
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	200,000,000
Common stock - shares issued (in shares)	34,420,094	34,073,670
Common stock - shares outstanding (in shares)	34,420,094	31,349,317
Treasury shares (in shares)	0	2,724,353

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Interest income:
Loans	$57,316	$58,470	$64,317
Mortgage-related securities	2,996	1,849	3,278
Debt securities, federal funds sold and short-term investments	3,322	2,545	2,251
Total interest income	63,634	62,864	69,846
Interest expense:
Deposits	4,926	5,215	9,477
Borrowings	17,401	18,443	18,424
Total interest expense	22,327	23,658	27,901
Net interest income	41,307	39,206	41,945
Provision for loan losses	1,150	4,532	8,300
Net interest income after provision for loan losses	40,157	34,674	33,645
Noninterest income:
Service charges on loans and deposits	1,486	1,337	1,331
Increase in cash surrender value of life insurance	1,290	1,076	1,071
Total other than temporary investment losses	44	0	-190
Portion of (gain) loss recognized in other comprehensive income (before tax)	-61	0	-23
Net impairment losses recognized in earnings	-17	0	-213
Mortgage banking income	77,982	80,260	87,375
Gain on sale of available for sale securities	0	-9	522
Other	3,827	5,135	1,117
Total noninterest income	84,568	87,799	91,203
Noninterest expenses:
Compensation, payroll taxes, and other employee benefits	69,172	68,807	63,507
Occupancy, office furniture and equipment	10,369	8,165	6,968
Advertising	2,949	3,085	2,647
Data processing	2,245	2,032	1,523
Communications	1,690	1,557	1,277
Professional fees	2,393	2,386	2,109
Real estate owned	2,482	255	8,746
FDIC insurance premiums	1,395	1,986	3,390
Other	12,123	10,871	11,971
Total noninterest expenses	104,818	99,144	102,138
Income (loss) before income tax	19,907	23,329	22,710
Income tax expense (benefit)	7,175	8,621	-12,204
Net income (loss)	$12,732	$14,708	$34,914
Loss per share:
Basic (in dollars per share)	$0.38	$0.43	$1.02
Diluted (in dollars per share)	$0.38	$0.43	$1.02
Weighted average shares outstanding:
Basic (in shares)	33,406	34,185	34,076
Diluted (in shares)	33,643	34,439	34,194

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (Loss) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Consolidated Statements of Comprehensive Income (Loss) [Abstract]
Net income (loss)	$12,732	$14,708	$34,914
Other comprehensive income (loss), net of tax
Net unrealized holding gain (loss) on available for sale securities arising during the period, net of tax (expense) benefit of ($791), ($1,240) and ($2,102), respectively	2,666	-3,719	1,082
Reclassification adjustment for net gain (loss) on available for sale securities realized during the period, net of tax expense (benefit) of $124, ($22) and $22, respectively	10	5	-185
Total other comprehensive income (loss)	2,676	-3,714	897
Comprehensive income (loss)	$15,408	$10,994	$35,811

Consolidated_Statements_of_Com1

Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Other comprehensive income (loss), net of tax
Net unrealized holding gain (loss) on available for sale securities arising during the period, net of tax (expense) benefit	($1,722)	$2,436	($791)
Reclassification adjustment for net gains on available for sale securities realized during the period, net of taxes	($7)	($4)	$124

Consolidated_Statements_of_Cha

Consolidated Statements of Changes in Shareholders' Equity (USD $)	Common Stock [Member]	Exchange of common stock - Member [Member]	Merger of Lamplighter MHC (Common Stock)- Member [Member]	Purchase of ESOP Share - Common Stock [Member]	Cash dividend - Common Stock [Member]	Stock Based Compensation Expense - Common Stock [Member]	Treasury stock retired - Member [Member]	Stock Compensation Activity [Member]	Proceeds of stock offering net of costs-member [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Unearned ESOP Shares [Member]	Accumulated Other Comprehensive (Loss) [Member]	Treasury Shares [Member]	Total
In Thousands, except Share data, unless otherwise specified	USD ($)									USD ($)	USD ($)	USD ($)	USD ($)	USD ($)	USD ($)
Balances at Dec. 31, 2011	$340									$110,894	$101,573	($2,562)	$1,388	($45,261)	$166,372
Balances (in shares) at Dec. 31, 2011	31,250
Comprehensive income (loss):
Net income (loss)	0									0	34,914	0	0	0	34,914
Other comprehensive income:	0									0	0	0	897	0	897
Total comprehensive income (loss)															35,811
ESOP shares committed to be released to Plan participants	0									-548	0	854	0	0	306
Stock based compensation	1									144	0	0	0	0	145
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures (in shares)	98
Balances at Dec. 31, 2012	341									110,490	136,487	-1,708	2,285	-45,261	202,634
Balances (in shares) at Dec. 31, 2012	31,348
Comprehensive income (loss):
Net income (loss)	0									0	14,708	0	0	0	14,708
Other comprehensive income:	0									0	0	0	-3,714	0	-3,714
Total comprehensive income (loss)															10,994
ESOP shares committed to be released to Plan participants	0									-136	0	854	0	0	718
Stock based compensation	0									126	0	0	0	0	126
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures (in shares)	1
Balances at Dec. 31, 2013	341									110,480	151,195	-854	-1,429	-45,261	214,472
Balances (in shares) at Dec. 31, 2013	31,349														31,349,317
Comprehensive income (loss):
Net income (loss)	0									0	12,732	0	0	0	12,732
Other comprehensive income:	0									0	0	0	2,676	0	2,676
Total comprehensive income (loss)															15,408
wsbf_ Purchase Of Esop Shares	0									0	0	-22,884	0	0	-22,884
ESOP shares committed to be released to Plan participants	0									31	0	1,186	0	0	1,217
Dividends, Common Stock, Cash	0									0	-6,623	0	0	0	-6,623
Stock compensation activity, net of tax	0									116	0	0	0	0	116
Stock based compensation	0									109	0	0	0	0	109
Merger of Lamplighter MHC	-231									305	0	0	0	0	74
Exchange of common stock	-83									83	0	0	0	0	0
Treasury stock retired	-27									-45,234	0	0	0	45,261	0
Proceeds of stock offering	344									248,004	0	0	0	0	248,348
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures (in shares)		-8,299	-23,050	0	0	0	0	14	34,406
Balances at Dec. 31, 2014	$344									$313,894	$157,304	($22,552)	$1,247	$0	$450,237
Balances (in shares) at Dec. 31, 2014	34,420														34,420,094

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating activities:
Net income (loss)	$12,732	$14,708	$34,914
Adjustments to reconcile net loss to net cash used in operating activities:
Provision for loan losses	1,150	4,532	8,300
Provision for depreciation	3,283	2,717	2,081
Deferred income taxes	3,716	5,394	-16,895
Stock based compensation	109	126	145
Net amortization of premium/discount on debt and mortgage related securities	1,583	2,203	1,647
Amortization of unearned ESOP shares	1,217	718	306
Amortization Of MSR	445	1,125	389
Gain on sale of loans held for sale	-82,146	-73,548	-90,171
Loans originated for sale	-1,661,376	-1,751,054	-1,749,426
Proceeds on sales of loans originated for sale	1,715,470	1,861,194	1,794,268
Decrease in accrued interest receivable	-225	-352	612
Increase in cash surrender value of life insurance	-1,290	-1,076	-1,071
Decrease in accrued interest on deposits and borrowings	5	-120	-372
Increase in other liabilities	-1,581	-6,007	4,796
Increase (decrease) in accrued tax payable	-453	-3,119	-161
Gain on sale of available for sale securities	0	9	-522
Impairment of securities	17	0	213
Net realized and unrealized loss related to real estate owned	659	-1,415	6,162
Gain Sale Of MSR	-2,456	-2,578	0
Other	6,925	-1,173	-3,352
Net cash (used in) provided by operating activities	-2,216	52,284	-8,137
Investing activities:
Net decrease in loans receivable	-25,668	16,133	51,023
Purchases of:
Debt securities	-22,009	-44,540	-19,269
Mortgage related securities	-80,837	-16,264	-115,660
Certificates Of Deposits Cash Flow	-735	0	0
Premises and equipment, net	-1,949	-5,360	-1,674
Bank owned life insurance	-10,180	-240	-240
Proceeds from:
Principal repayments on mortgage-related securities	28,515	36,952	35,504
Maturities of debt securities	17,864	6,170	71,065
Sales of debt securities	0	921	11,798
Sales of mortgage-related securities	0	0	18,291
Calls of structured notes	0	0	2,648
Sales of foreclosed properties and other assets	19,751	27,604	36,580
Redemption of FHLB stock	0	2,693	1,459
Net cash used in investing activities	-75,248	24,069	91,525
Financing activities:
Net decrease in deposits	9,523	305,228	-111,779
Net increase (decrease) in short-term borrowings	-21,197	-24,691	18,750
Net increase (decrease) in advance payments by borrowers for taxes	2,509	810	730
Financing for cash dividends on common stock	-5,003	0	0
Financing for purchase of ESOP	-22,884	0	0
Proceeds from stock option exercises	49	0	0
Stock offering proceeds returned to subscribers	-141,882	0	0
Net cash used by financing activities	-178,885	281,347	-92,299
(Decrease) Increase in cash and cash equivalents	-256,349	357,700	-8,911
Cash and cash equivalents at beginning of year	429,169	71,469	80,380
Cash and cash equivalents at end of year	172,820	429,169	71,469
Cash paid, credited or (received) during the period for:
Income tax payments (refunds)	3,847	6,265	4,852
Interest payments	22,322	23,778	28,273
Noncash investing activities:
Loans receivable transferred to other real estate	16,645	13,552	22,282
Deposits utilized to purchase common stock	248,422	0	0
Dividends declared but not paid in other liabilities	$1,620	$0	$0

Summary_of_Significant_Account

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2014
Summary of Significant Accounting Policies [Abstract]
Summary of Significant Accounting Policies	1)	Summary of Significant Accounting Policies
	The following significant accounting and reporting policies of Waterstone Financial, Inc. and subsidiaries (collectively, the "Company"), conform to U.S. generally accepted accounting principles, or ("GAAP"), and are used in preparing and presenting these consolidated financial statements.
	(a)      Plan of Conversion and Reorganization
	On June 6, 2013, the Board of Directors of Lamplighter Financial, MHC ("MHC") and the Board of Directors of Waterstone Financial, Inc., a federal corporation, ("Waterstone-Federal") adopted a Plan of Conversion and Reorganization (the "Plan"). Pursuant to the Plan, Waterstone Financial, Inc., a Maryland corporation, ("New Waterstone") was organized and the MHC converted from the mutual holding company form of organization to the fully public form on January 22, 2014.  As part of the conversion, the MHC's ownership interest of Waterstone-Federal was offered for sale in a public offering. A total of 25,300,000 shares were sold in the offering at a price $10.00 per share, resulting in gross proceeds of $253.0 million.  Expenses related to the offering totaled approximately $4.7 million.  The existing publicly held shares of Waterstone-Federal were exchanged for new shares of common stock of New Waterstone at a conversion ratio of 1.0973-to-one.  The exchange ratio ensured that immediately after the conversion and public offering, the public shareholders of Waterstone-Federal owned the same aggregate percentage of New Waterstone common stock that they owned immediately prior to that time (excluding shares purchased in the stock offering and cash received in lieu of fractional shares). When the conversion and public offering was completed, New Waterstone became the holding company of WaterStone Bank SSB and succeeded to all of the business and operations of Waterstone-Federal and each of Waterstone-Federal and Lamplighter Financial, MHC ceased to exist.  A total of 34,405,458 shares of New Waterstone common stock were outstanding after the completion of the offering and exchange.
	The Plan provided for the establishment of special "liquidation accounts" for the benefit of certain depositors of WaterStone Bank in an amount equal to the greater of the MHC's ownership interest in the retained earnings of the Company as of the date of the latest balance sheet contained in the prospectus or the retained earnings of WaterStone Bank at the time it reorganized into the MHC. Following the completion of the conversion, under the rules of the Board of Governors of the Federal Reserve System, WaterStone Bank is not permitted to pay dividends on its capital stock to Waterstone Financial, Inc., its sole shareholder, if WaterStone Bank's shareholder's equity would be reduced below the amount of the liquidation accounts. The liquidation accounts will be reduced annually to the extent that eligible account holders have reduced their qualifying deposits. Subsequent increases will not restore an eligible account holder's interest in the liquidation accounts.
	Share and per share amounts have been restated to reflect the completion of our second-step conversion on January 22, 2014 at a conversion ratio of 1.0973 unless noted otherwise.
	New Waterstone did not engage in any business prior to the completion of the mutual-to-stock conversion of Lamplighter Financial, MHC on January 22, 2014. Consequently, these financial statements and footnotes reflect the financial condition and operating results of Waterstone-Federal and its subsidiaries, including the Bank, until January 22, 2014, and of New Waterstone, and its subsidiaries, including the Bank, thereafter. The words "Waterstone Financial," "we" and "our" thus are intended to refer to Waterstone-Federal and its subsidiaries with respect to matters and time periods occurring on or before January 22, 2014, and to New Waterstone and its subsidiaries with respect to matters and time periods occurring thereafter.
		b)	Nature of Operations
	The Company is a one-bank holding company with two operating segments – community banking and mortgage banking.  The Bank is principally engaged in the business of attracting deposits from the general public and using such deposits to originate real estate, business and consumer loans.
	The Bank provides a full range of financial services to customers through branch locations in southeastern Wisconsin. In addition, the Bank has a loan production office in Minneapolis, Minnesota.  The Bank is subject to the regulations of certain federal and state agencies and undergoes periodic examinations by those regulatory authorities.
	The Bank owns a mortgage banking subsidiary that originates residential real estate loans held for sale at various branch offices across the country.  Mortgage banking volume fluctuates widely given movements in interest rates.  Mortgage banking income is reported as a single line item in the statements of operations while mortgage banking expense is distributed among the various noninterest expense lines.  Compensation, payroll taxes and other employee benefits expense varies directly with mortgage banking income.
		c)	Principles of Consolidation
	The consolidated financial statements include the accounts and operations of Waterstone Financial, Inc. and its wholly owned subsidiary, WaterStone Bank.  The Bank has the following wholly owned subsidiaries: Wauwatosa Investments, Inc., Waterstone Mortgage Corporation, and Main Street Real Estate Holdings, LLC.. All significant intercompany accounts and transactions have been eliminated in consolidation.
		d)	Use of Estimates
	The preparation of the 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, income taxes, and fair value measurements. Actual results could differ from those estimates and the current economic environment has increased the degree of uncertainty inherent in those estimates and assumptions.
		e)	Cash and Cash Equivalents
	The Company considers federal funds sold and highly liquid debt instruments with a maturity of three months or less when purchased to be cash equivalents.
		f)	Securities
	Available for Sale Securities
	At the time of purchase, investment securities are classified as available for sale, as management has the intent and ability to hold such securities for an indefinite period of time, but not necessarily to maturity.  Any decision to sell investment securities available for sale would be based on various factors, including, but not limited to asset/liability management strategies, changes in interest rates or prepayment risks, liquidity needs, or regulatory capital considerations.  Available for sale securities are carried at fair value, with the unrealized gains and losses, net of deferred tax, reported as a separate component of equity, accumulated other comprehensive income.  The cost of debt securities is adjusted for amortization of premiums and accretion of discounts to maturity or, in the case of mortgage-backed securities and collateralized mortgage obligations, over the estimated life of the security. Such amortization is included in interest income from securities.  Realized gains or losses on securities sales (using specific identification method) are included in other income.  Declines in value judged to be other than temporary are included in net impairment losses recognized in earnings in the consolidated statements of operations.
	Other Than Temporary Impairment
	One of the significant estimates related to securities is the evaluation of investments for other than temporary impairment.  The Company assesses  investment securities with unrealized loss positions for other than temporary impairment on at least a quarterly basis.  When the fair value of an investment is less than its amortized cost at the balance sheet date of the reporting period for which impairment is assessed, the impairment is designated as either temporary or other than temporary.  In evaluating other than temporary impairment, management considers the length of time and extent to which the fair value has been less than cost and the expected recovery period of the security, the financial condition and near-term prospects of the issuer, and the intent and ability of the Company to retain its investment in the issuer for a period of time sufficient to allow for any anticipated recovery in fair value in the near term.  Declines in the fair value of investment securities below amortized cost are deemed to be other than temporary when the Company cannot assert that it will recover its amortized cost basis, including whether the present value of cash flows expected to be collected is less than the amortized cost basis of the security. If it is more likely than not that the Company will be required to sell the security before recovery or if the Company has the intent to sell, an other than temporary impairment write down is recognized in earnings equal to the difference between the security's amortized cost and its fair value.  If it is not more likely than not that the Company will be required to sell the security before recovery and if the Company does not intend to sell, the other than temporary impairment write down is separated into an amount representing credit loss, which is recognized in earnings, and an amount related to other factors, which is recognized as a separate component of equity.  Following the recognition of an other than temporary impairment representing credit loss, the book value of an investment less the impairment loss realized becomes the new cost basis.  Because the Company's assessments are based on factual information as well as subjective information available at the time of assessment, the determination as to whether an other than temporary impairment exists and, if so, the amount considered other than temporarily impaired, or not impaired, is subjective and, therefore, the timing and amount of other than temporary impairments constitute material estimates that are subject to significant change.
	Federal Home Loan Bank Stock
	Federal Home Loan Bank stock is carried at cost, which is the amount that the stock is redeemable by tendering to the FHLBC or the amount at which shares can be sold to other FHLBC members.  FHLBC dividends are recognized as income on their ex-dividend date.
		g)	Loans Held for Sale
	The origination of residential real estate loans is an integral component of the business of the Company. The Company generally sells its originations of long-term fixed interest rate mortgage loans in the secondary market, and on a selective basis, retains the rights to service the loans sold. Gains and losses on the sales of these loans are determined using the specific identification method. Mortgage loans originated for sale are generally sold within 45 days after closing.
	The Company has elected to carry loans held for sale at fair value.  Fair value is generally determined by estimating a gross premium or discount, which is derived from pricing currently observable in the market.  The amount by which cost differs from market value is accounted for as a valuation adjustment to the carrying value of the loans.  Changes in value are included in mortgage banking income in the consolidated statements of operations.
	Costs to originate loans held for sale are expensed as incurred and are included on the appropriate noninterest expense lines of the statements of operations.  Salaries, commissions and related payroll taxes are the primary costs to originate and comprise approximately 69.8 % of total mortgage banking noninterest expense.
	The value of mortgage loans held for sale and other residential mortgage loan commitments to customers are hedged by utilizing both best efforts and mandatory forward commitments to sell loans to investors in the secondary market. Such forward commitments are generally entered into at the time when applications are taken to protect the value of the mortgage loans from increases in market interest rates during the period held. The Corporation recognizes revenue associated with the expected future cash flows of servicing loans at the time a forward loan commitment is made, as required under Securities and Exchange Commission Staff Accounting Bulletin No. 109, Written Loan Commitments Recorded at Fair Value Through Earnings.
		h)	Loans Receivable and Related Interest Income
	Loans are classified as held for investment when management has both the intent and ability to hold the loan for the foreseeable future, or until maturity or payoff.  Loans are carried at the principal amount outstanding, net of any unearned income, charge-offs and unamortized deferred fees and costs.  Loan origination and commitment fees and certain direct loan origination costs are deferred and the net amount amortized as an adjustment of the related loan yield. Amortization is based on a level-yield method over the contractual life of the related loans or until the loan is paid in full.
	Loan interest income is recognized on the accrual basis.  Accrual of interest is generally discontinued either when reasonable doubt exists as to the full, timely collection of interest or principal, or when a loan becomes contractually past due more than 90 days with respect to interest or principal. At that time, previously accrued and uncollected interest on such loans is reversed and additional income is recorded only to the extent that payments are received and the collection of principal is reasonably assured.  Generally, loans are restored to accrual status when the obligation is brought current, has performed in accordance with the contractual terms for a reasonable period of time, and the ultimate collectability of the total contractual principal and interest is no longer in doubt.
	A loan is accounted for as a troubled debt restructuring if the Company, for economic reasons related to the borrower's financial condition, grants a concession to the borrower that it would not otherwise consider.  A troubled debt restructuring typically involves a modification of terms such as a reduction of the stated interest rate, a deferral of principal payments or a combination of both for a temporary period of time.  If the borrower was performing in accordance with the original contractual terms at the time of the restructuring, the restructured loan is accounted for on an accruing basis as long as the borrower continues to comply with the modified terms.  If the loan was not accounted for on an accrual basis at the time of restructuring, the restructured loan remains in non-accrual status until the loan completes a minimum of six consecutive contractual payments.
		i)	Allowance for Loan Losses
	The allowance for loan losses is presented as a reserve against loans and represents the Bank's assessment of probable loan losses inherent in the loan portfolio.  The allowance for loan losses is established as losses are estimated to have occurred through a provision for loan losses charged to income.  Estimated loan losses are charged against the allowance when the loan balance is confirmed to be uncollectible directly or indirectly by the borrower or upon initiation of a foreclosure action by the Bank.  Subsequent recoveries, if any, are credited to the allowance as long as it is within 90 days of being transferred to real estate owned.
	The allowance provides for probable losses that have been identified with specific customer relationships and for probable losses believed to be inherent in the loan portfolio, but have not been specifically identified.  The Bank utilizes its own loss history to estimate inherent losses on loans. Although the Bank allocates portions of the allowance to specific loans and loan types, the entire allowance is available for any loan losses that occur.
	The Bank evaluates the need for specific valuation allowances on loans that are considered impaired. A loan is considered impaired when, based on current information and events, it is probable that the Bank will not be able to collect all amounts due according to the contractual terms of the loan agreement. Within the loan portfolio, all non-accrual loans and loans modified under troubled debt restructurings have been determined by the Bank to meet the definition of an impaired loan.  In addition, other one- to four-family, over four-family, construction and land, commercial real estate and commercial loans may be considered impaired loans.  A valuation allowance is established for an amount equal to the impairment when the carrying amount of the loan exceeds the present value of the expected future cash flows, discounted at the loan's original effective interest rate or the fair value of the underlying collateral.
	The Bank also establishes valuation allowances based on an evaluation of the various risk components that are inherent in the loan portfolio. The risk components that are evaluated include past loan loss experience; the level of non-performing and classified assets; current economic conditions; volume, growth, and composition of the loan portfolio; adverse situations that may affect the borrower's ability to repay; the estimated value of any underlying collateral; regulatory guidance; and other relevant factors.
	The appropriateness of the allowance for loan losses is approved quarterly by the Bank's board of directors. The allowance reflects management's best estimate of the amount needed to provide for the probable loss on impaired loans, as well as other credit risks of the Bank, and is based on a risk model developed and implemented by management and approved by the Bank's board of directors.
	Actual results could differ from this estimate, and future additions to the allowance may be necessary based on unforeseen changes in economic conditions. In addition, federal regulators periodically review the Bank's allowance for loan losses. Such regulators have the authority to require the Bank to recognize additions to the allowance at the time of their examination.
		j)	Real Estate Owned
	Real estate owned consists of properties acquired through, or in lieu of, loan foreclosure.  Real estate owned is transferred into the portfolio at estimated net realizable value.  To the extent that the net carrying value of the loan exceeds the estimated fair value of the property at the date of transfer, the excess is charged to the allowance for loan losses within 90 days of being transferred.  Subsequent write-downs to reflect current fair market value, as well as gains and losses upon disposition and revenue and expenses incurred in maintaining such properties, are treated as period costs and included in real estate owned in the consolidated statements of operations.
		k)	Mortgage Servicing Rights
	The Company sells residential mortgage loans in the secondary market and, on a selective basis, retains the right to service the loans sold.  Upon sale, a mortgage servicing rights asset is capitalized, which represents the then current fair value of future net cash flows expected to be realized for performing servicing activities.  Mortgage servicing rights, when purchased, are initially recorded at fair value.  Mortgage servicing rights are amortized over the period of estimated net servicing income, and assessed for impairment at each reporting date. Mortgage servicing rights are carried at the lower of the initial capitalized amount, net of accumulated amortization, or estimated fair value, and are included in other assets, net in the consolidated balance sheets. To the extent that the Company sells mortgage servicing rights, a gain is recognized for the amount of which sale proceeds exceed the remaining unamortized cost of the servicing rights that were sold. Gains on sale of mortgage serving rights are included in other noninterest income in the consolidated statements of operations.
		l)	Cash Surrender Value of Life Insurance
	The Company purchased bank owned life insurance on the lives of certain employees.  The Company is the beneficiary of the life insurance policies.  The cash surrender value of life insurance is reported at the amount that would be received in cash if the polices were surrendered.  Increases in the cash value of the policies and proceeds of death benefits received are recorded in non-interest income.  The increase in cash surrender value of life insurance is not subject to income taxes, as long as the Company has the intent and ability to hold the policies until the death benefits are received.
		m)	Office Properties and Equipment
	Office properties and equipment, including leasehold improvements and software, are stated at cost, net of depreciation and amortization. Depreciation and amortization are computed on the straight-line method over the estimated useful lives of the related assets. Leasehold improvements are amortized over the lease term, if shorter than the estimated useful life. Maintenance and repairs are charged to expense as incurred, while additions or major improvements are capitalized and depreciated over their estimated useful lives. Estimated useful lives of the assets are 10 to 30 years for office properties, 3 to 10 years for equipment, and 3 years for software. Rent expense related to long-term operating leases is recorded on the accrual basis.
		n)	Income Taxes
	The Company and its subsidiaries file consolidated federal and combined state income tax returns. The provision for income taxes is based upon income in the consolidated financial statements, rather than amounts reported on the income tax returns.  Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases, as well as net operating loss carry forwards.  Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled.  The effect on deferred tax assets and liabilities of a change in tax rates is recognized as income or expense in the period that includes the enactment date.
	The Company evaluates the realizability of its deferred tax assets on a quarterly basis.  Under generally accepted accounting principles, a valuation allowance is required to be recognized if it is "more likely than not" that a deferred tax asset will not be realized.  The determination of the realizability of the deferred tax assets is highly subjective and dependent upon judgment concerning management's evaluation of both positive and negative evidence, the forecasts of future income, applicable tax planning strategies, and assessments of current and future economic and business conditions.
	Positions taken in the Company's tax returns may be subject to challenge by the taxing authorities upon examination.  The benefit of uncertain tax positions are initially recognized in the financial statements only when it is more likely than not the position will be sustained upon examination by the tax authorities.  Such tax positions are both initially and subsequently measured as the largest amount of tax benefit that is greater than 50% likely of being realized upon settlement with the tax authority, assuming full knowledge of the position and all relevant facts.   Interest and penalties on income tax uncertainties are classified within income tax expense in the income statement.
		o)	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 shareholders by the weighted average number of common shares outstanding during the applicable period, excluding outstanding participating securities.  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.  Diluted EPS reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised.  Shares of the Employee Stock Ownership Plan committed to be released are considered outstanding for both common and diluted EPS.  Incentive stock compensation awards granted can result in dilution.
		p)	Comprehensive Income
	Comprehensive income is the total of reported net income and changes in unrealized gains or losses, net of tax, on securities available for sale.
		q)	Employee Stock Ownership Plan (ESOP)
	Compensation expense under the ESOP is equal to the fair value of common shares released or committed to be released to participants in the ESOP in each respective period.  Common stock purchased by the ESOP and not committed to be released to participants is included in the consolidated statements of financial condition at cost as a reduction of shareholders' equity.
		r)	Impact of Recent Accounting Pronouncements
	In July 2013, the FASB issued ASU No. 2013-11, "Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exits." This ASU provides that an unrecognized tax benefit, or a portion thereof, should be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward, except to the extent a net operating loss carryforward, a similar tax loss, or a tax credit carryforward is not available at the reporting date to settle any additional income taxes that would result from disallowance of a tax position, or the tax law does not require the entity to use, and the entity does not intend to use the deferred tax asset for such purpose. In these cases, the unrecognized tax benefit should be presented as a liability. This ASU is effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. Early adoption and retrospective application is permitted. The adoption of this accounting standard did not have a material impact on the Company's results of operations, financial position or liquidity.
	In January 2014, the FASB issued ASU No. 2014-04, "Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure." This ASU clarifies that an in substance repossession or foreclosure occurs, and a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either (1) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure or (2) the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar agreement. In addition, the amendment requires interim and annual disclosure of both the amount of foreclosed residential real estate property held by the creditor and the recorded investment in consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure in accordance with local requirements of the applicable jurisdiction. This amendment is effective for fiscal years, and interim periods within those years, beginning after December 15, 2014. An entity can elect to adopt the amendments using either a modified retrospective method or a prospective transition method. Early adoption is permitted. The Company is in the process of evaluating the impact of this standard to its results of operations, financial position, or liquidity.
	In May 2014, the FASB issued Accounting Standards Update (ASU) No. 2014-09, "Revenue from Contracts with Customers (Topic 606)." The ASU is a converged standard between the FASB and the IASB that provides a single comprehensive revenue recognition model for all contracts with customers across transactions and industries. The primary objective of the ASU is revenue recognition that represents the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The ASU is effective for interim and annual reporting periods beginning after December 15, 2016. The Company is in the process of evaluating the impact of this standard to its results of operations, financial position, and liquidity.
	In June 2014, the FASB issued ASU No. 2014-11, "Transfers and Servicing (Topic 860): Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures." This ASU requires secured borrowing accounting treatment for repurchase-to-maturity transactions and provides guidance on accounting for repurchase financing arrangements. This ASU is effective for interim and annual reporting periods beginning after December 15, 2014. The Company is in the process of evaluating the impact of this standard to its results of operations, financial position, and liquidity.
	In June 2014, the FASB also issued ASU No. 2014-12, "Compensation – Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could be Achieved after the Requisite Service Period." This ASU requires that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition and should not be reflected in estimating the grant-date fair value of the award. This ASU is effective for interim and annual reporting periods beginning after December 15, 2015 with earlier adoption permitted. The adoption of this standard is not expected to have a material impact to the Company's consolidated financial position or results of operations.

Securities

Securities	12 Months Ended
	Dec. 31, 2014
Securities [Abstract]
Securities	2)	Securities
	Securities Available for Sale
	The amortized cost and fair value of the Company's investment in securities follow:
			31-Dec-14
			Amortized cost			Gross unrealized gains			Gross unrealized losses			Fair value
			(In Thousands)
	Mortgage-backed securities		$	115,670			1,582			(124	)		117,128
	Collateralized mortgage obligations
	Government sponsored enterprise issued			58,821			320			(70	)		59,071
	Mortgage related securities			174,491			1,902			(194	)		176,199
	Government sponsored enterprise bonds			6,750			2			(41	)		6,711
	Municipal securities			76,037			1,442			(371	)		77,108
	Other debt securities			7,404			159			(35	)		7,528
	Debt securities			90,191			1,603			(447	)		91,347
	Certificates of deposit			5,880			17			-			5,897
			$	270,562			3,522			(641	)		273,443
			31-Dec-13
			Amortized cost			Gross unrealized gains			Gross unrealized losses			Fair value
			(In Thousands)
	Mortgage-backed securities		$	104,462			1,192			(731	)		104,923
	Collateralized mortgage obligations
	Government sponsored enterprise issued			18,946			320			(25	)		19,241
	Mortgage related securities			123,408			1,512			(756	)		124,164
	Government sponsored enterprise bonds			18,171			4			(241	)		17,934
	Municipal securities			61,014			802			(3,023	)		58,793
	Other debt securities			5,000			160			-			5,160
	Debt securities			84,185			966			(3,264	)		81,887
	Certificates of deposit			7,350			32			(15	)		7,367
			$	214,943			2,510			(4,035	)		213,418
	The Company's mortgage-backed securities and collateralized mortgage obligations issued by government sponsored enterprises are guaranteed by one of the following government sponsored enterprises: Fannie Mae, Freddie Mac or Ginnie Mae.  At December 31, 2014, $98.2 million of the Company's mortgage related securities were pledged as collateral to secure repurchase agreement obligations of the Company.  As of December 31, 2014, $1.3 million of municipal securities were pledged as collateral to secure mortgage related activities.
	The amortized cost and fair value of securities at December 31, 2014, by contractual maturity, are shown below. Expected maturities may differ from contractual maturities because issuers or borrowers may have the right to prepay obligations with or without prepayment penalties.
		31-Dec-14
		Amortized cost			Fair value
		(In Thousands)
	Debt securities:
	Due within one year		$	5,767			5,803
	Due after one year through five years			24,274			24,549
	Due after five years through ten years			40,505			40,487
	Due after ten years			25,525			26,405
	Mortgage-related securities			174,491			176,199
			$	270,562			273,443
	Total proceeds and gross gains and losses from sales of investment securities available for sale for each of periods listed below.
		December 31,
		2014				2013			2012
		(In Thousands)
	Gross gains		$	-			6			522
	Gross losses			-			(15	)		-
	Gains on sale of investment securities, net		$	-			(9	)		522
	Proceeds from sales of investment securities		$	-			921			30,089
	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:
			31-Dec-14
			Less than 12 months						12 months or longer						Total
			Fair			Unrealized			Fair			Unrealized			Fair		Unrealized
			value			loss			value			loss			value		loss
			(In Thousands)
	Mortgage-backed securities		$	10,537			(13	)		12,489			(111	)		23,026		(124	)
	Collateralized mortgage obligations
	Government sponsored enterprise issued			23,131			(70	)		-			-			23,131		(70	)
	Government sponsored enterprise bonds			2,739			(11	)		2,970			(30	)		5,709		(41	)
	Municipal securities			5,671			(19	)		21,344			(352	)		27,015		(371	)
	Other debt securities			4,977			(35	)		-			-			4,977		(35	)
	Certificates of deposit			490			-			-			-			490		-
			$	47,545			(148	)		36,803			(493	)		84,348		(641	)
		31-Dec-13
	Less than 12 months							12 months or longer						Total
	Fair				Unrealized			Fair			Unrealized			Fair		Unrealized
	value				loss			value			loss			value		loss
	(In Thousands)
Mortgage-backed securities		$	45,094			(539	)		5,349			(192	)		50,443		(731	)
Collateralized mortgage obligations
Government sponsored enterprise issued			5,669			(25	)		-			-			5,669		(25	)
Government sponsored enterprise bonds			15,530			(241	)		-			-			15,530		(241	)
Municipal securities			37,498			(2,546	)		4,708			(477	)		42,206		(3,023	)
Certificates of deposit			3,660			(15	)		-			-			3,660		(15	)
		$	107,451			(3,366	)		10,057			(669	)		117,508		(4,035	)
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, 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.
As of December 31, 2014, the Company identified two municipal securities that were deemed to be other-than-temporarily impaired.  Both securities were 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 securities to operate as a going concern.  During the year ended December 31, 2012, the Company's analysis of these securities resulted in $100,000 in credit losses that were charged to earnings with respect to these two municipal securities. An additional $17,000 credit loss was charged to earnings during the year ended December 31, 2014 with respect to these two securities. As of December 31, 2014, these securities had a combined amortized cost of $198,000 and a total life-to-date impairment of $117,000.
As of December 31, 2014, the Company had 53 municipal securities, six mortgage-backed securities, and two government sponsored enterprise bonds which had been in an unrealized loss position for twelve months or longer.  These securities were determined not to be other-than-temporarily impaired as of December 31, 2014. The Company has determined that the decline in fair value of these securities is not attributable to credit deterioration, and 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.
Continued 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.
The following table presents the change in other-than-temporary credit related impairment charges on municipal securities 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, 2012		$	100
Credit related impairments related to a security for which other-than-temporary impairment was not previously recognized			-
Increase in credit related impairments related to securities for which an other-than-temporary impairment was previously recognized			-
Reduction for sales of securities for which other-than-temporary was previously recognized			-
Credit related impairments on securities as of December 31, 2013			100
Credit related impairments related to a security for which other-than-temporary impairment was not previously recognized			-
Increase in credit related impairments related to securities for which an other-than-temporary impairment was previously recognized			17
Credit related impairments on securities as of December 31, 2014		$	117

Loans_Receivable

Loans Receivable	12 Months Ended
	Dec. 31, 2014
Loan Receivable [Abstract]
Loans Receivable	3)	Loans Receivable
	Loans receivable at December 31, 2014 and 2013 are summarized as follows:
			December 31,
			2014				2013
	Mortgage loans:		(In Thousands)
	Residential real estate:
	One- to four-family		$	411,979				413,614
	Multi family			522,281				521,597
	Home equity			29,207				35,432
	Construction and land			17,081				31,905
	Commercial real estate			94,771				71,698
	Consumer			200				134
	Commercial loans			19,471				18,296
	Total loans receivable		$	1,094,990				1,092,676
	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 credit risks tend to be geographically concentrated in the Company's Milwaukee metropolitan area and while 88.0% of the Company's loan portfolio involves loans that are secured by residential real estate, 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 $844.2 million and $882.9 million are pledged as collateral against $350.0 million in outstanding Federal Home Loan Bank of Chicago advances under a blanket security agreement at both December 31, 2014 and December 31, 2013.
	An analysis of past due loans receivable as of December 31, 2014 and 2013 follows:
			As of December 31, 2014
			1-59 Days Past				60-89 Days Past				Greater Than 90				Total Past Due				Current (3)				Total Loans
			Due (1)				Due (2)				Days
	Mortgage loans:		(In Thousands)
	Residential real estate:
	One- to four-family		$	3,767				3,743				12,196				19,706				392,273				411,979
	Multi family			462				280				11,092				11,834				510,447				522,281
	Home equity			268				153				250				671				28,536				29,207
	Construction and land			90				-				362				452				16,629				17,081
	Commercial real estate			225				-				947				1,172				93,599				94,771
	Consumer			-				-				-				-				200				200
	Commercial loans			34				-				265				299				19,172				19,471
	Total		$	4,846				4,176				25,112				34,134				1,060,856				1,094,990
			As of December 31, 2013
			1-59 Days Past				60-89 Days Past				Greater Than 90				Total Past Due				Current (3)				Total Loans
			Due (1)				Due (2)				Days
	Mortgage loans:		(In Thousands)
	Residential real estate:
	One- to four-family		$	4,994				5,236				17,499				27,729				385,885				413,614
	Multi family			804				1,293				7,743				9,840				511,757				521,597
	Home equity			373				205				465				1,043				34,389				35,432
	Construction and land			-				39				4,195				4,234				27,671				31,905
	Commercial real estate			287				-				357				644				71,054				71,698
	Consumer			-				-				-				-				134				134
	Commercial loans			-				-				521				521				17,775				18,296
	Total		$	6,458				6,773				30,780				44,011				1,048,665				1,092,676
	-1	Includes $1.6 million and $1.1 million for December 31, 2014 and 2013, respectively, which are on non-accrual status.
	-2	Includes $795,000 and $5.7 million for December 31, 2014 and 2013, respectively, which are on non-accrual status.
	-3	Includes $10.5 million and $12.9 million for December 31, 2014 and 2013, respectively, which are on non-accrual status.
	As of December 31, 2014 and 2013, there are no loans that are 90 or more days past due and still accruing interest.
	A summary of the activity for the years ended December 31, 2014, 2013 and 2012 in the allowance for loan losses follows:
			One- to Four-				Multi				Home Equity				Construction				Commercial				Consumer			Commercial			Total
			Family				Family								and Land				Real Estate
			(In Thousands)
	Year ended December 31, 2014
	Balance at beginning of period		$	11,549				7,211				1,807				1,613				1,402				34			648			24,264
	Provision for loan losses			(1,081	)			3,205				(1,208	)			(505	)			721				(27	)		45			1,150
	Charge-offs			(2,424	)			(5,247	)			(191	)			(496	)			(199	)			(5	)		(293	)		(8,855	)
	Recoveries			1,833				189				14				75				27				6			3			2,147
	Balance at end of period		$	9,877				5,358				422				687				1,951				8			403			18,706
	Year ended December 31, 2013
	Balance at beginning of period		$	17,819				7,734				2,097				1,323				1,259				30			781			31,043
	Provision for loan losses			1,479				859				305				1,719				303				(2	)		(131	)		4,532
	Charge-offs			(8,706	)			(1,640	)			(630	)			(1,480	)			(160	)			-			(8	)		(12,624	)
	Recoveries			957				258				35				51				-				6			6			1,313
	Balance at end of period		$	11,549				7,211				1,807				1,613				1,402				34			648			24,264
	Year ended December 31, 2012
Balance at beginning of period		$	17,475				8,252				1,998				2,922				941				28			814			32,430
Provision for loan losses			6,149				534				559				(181	)			1,500				6			(267	)		8,300
Charge-offs			(6,472	)			(1,108	)			(485	)			(1,668	)			(1,182	)			(4	)		(59	)		(10,978	)
Recoveries			667				56				25				250				-				-			293			1,291
Balance at end of period		$	17,819				7,734				2,097				1,323				1,259				30			781			31,043
A summary of the allowance for loan loss for loans evaluated individually and collectively for impairment by collateral class as of the year ended December 31, 2014 follows:
		One- to Four-				Multi				Home Equity				Construction				Commercial				Consumer			Commercial			Total
		Family				Family								and Land				Real Estate
		(In Thousands)
Allowance related to loans individually evaluated for impairment		$	2,386				731				63				13				526				-			7			3,726
Allowance related to loans collectively evaluated for impairment			7,491				4,627				359				674				1,425				8			396			14,980
Balance at end of period		$	9,877				5,358				422				687				1,951				8			403			18,706
Loans individually evaluated for impairment		$	29,509				15,562				589				2,266				3,077				-			299			51,302
Loans collectively evaluated for impairment			382,470				506,719				28,618				14,815				91,694				200			19,172			1,043,688
Total gross loans		$	411,979				522,281				29,207				17,081				94,771				200			19,471			1,094,990
A summary of the allowance for loan loss for loans evaluated individually and collectively for impairment by collateral class as of the year ended December 31, 2013 follows:
		One- to Four-				Multi				Home Equity				Construction				Commercial				Consumer			Commercial			Total
		Family				Family								and Land				Real Estate
		(In Thousands)
Allowance related to loans individually evaluated for impairment		$	2,631				2,196				862				624				370				-			258			6,941
Allowance related to loans collectively evaluated for impairment			8,918				5,015				945				989				1,032				34			390			17,323
Balance at end of period		$	11,549				7,211				1,807				1,613				1,402				34			648			24,264
Loans individually evaluated for impairment		$	37,064				17,221				1,956				6,527				1,298				17			580			64,663
Loans collectively evaluated for impairment			376,550				504,376				33,476				25,378				70,400				117			17,716			1,028,013
Total gross loans		$	413,614				521,597				35,432				31,905				71,698				134			18,296			1,092,676
The following table presents information relating to the Company's internal risk ratings of its loans receivable as of December 31, 2014 and 2013:
	One- to Four-					Multi				Home Equity				Construction				Commercial				Consumer			Commercial			Total
	Family					Family								and Land				Real Estate
At December 31, 2014	(In Thousands)
Substandard		$	28,945				12,638				624				2,266				3,077				-			299			47,849
Watch			10,779				7,070				278				1,377				2,186				-			840			22,530
Pass			372,255				502,573				28,305				13,438				89,508				200			18,332			1,024,611
		$	411,979				522,281				29,207				17,081				94,771				200			19,471			1,094,990
At December 31, 2013	(In Thousands)
Substandard		$	37,060				14,809				2,169				6,576				1,298				17			580			62,509
Watch			14,402				13,108				1,077				1,866				1,401				-			1,120			32,974
Pass			362,152				493,680				32,186				23,463				68,999				117			16,596			997,193
		$	413,614				521,597				35,432				31,905				71,698				134			18,296			1,092,676
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.  In addition, an independent loan review function exists 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, over four-family, construction and land, commercial real estate and commercial loans that individually, or as part of an overall borrower relationship exceed $1.0 million 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 Bank will sustain some loss if the deficiencies are not corrected.  Finally, a loan is considered to be impaired when it is probable that the Bank 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 over-four 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 December 31, 2014 and 2013.
		As of or for the Year Ended December 31, 2014
		Recorded				Unpaid				Reserve				Cumulative				Average				Interest Paid YTD
		Investment				Principal								Charge-Offs				Recorded
																		Investment
Total Impaired with Reserve
One- to four-family		$	11,864				13,345				2,386				1,481				15,982				515
Multi family			7,438				10,285				731				2,847				12,720				177
Home equity			144				144				63				-				195				7
Construction and land			47				61				13				14				63				-
Commercial real estate			2,984				3,544				526				560				4,211				128
Consumer			-				-				-				-				-				-
Commercial			7				7				7				-				12				1
		$	22,484				27,386				3,726				4,902				33,183				828
Total Impaired with no Reserve
One- to four-family		$	17,645				19,795				-				2,150				23,215				860
Multi family			8,124				9,364				-				1,240				12,693				439
Home equity			445				445				-				-				554				15
Construction and land			2,219				2,332				-				113				3,379				97
Commercial real estate			93				93				-				-				126				4
Consumer			-				-				-				-				-				-
Commercial			292				535				-				243				470				2
		$	28,818				32,564				-				3,746				40,437				1,417
Total Impaired
One- to four-family		$	29,509				33,140				2,386				3,631				39,197				1,375
Multi family			15,562				19,649				731				4,087				25,413				616
Home equity			589				589				63				-				749				22
Construction and land			2,266				2,393				13				127				3,442				97
Commercial real estate			3,077				3,637				526				560				4,337				132
Consumer			-				-				-				-				-				-
Commercial			299				542				7				243				482				3
		$	51,302				59,950				3,726				8,648				73,620				2,245
The difference between a loan's recorded investment and the unpaid principal balance represents a partial charge-off resulting from a confirmed loss due to the value of the collateral securing the loan being below the loan balance and management's assessment that the full collection of the loan balance is not likely.
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.
		As of or for the Year Ended December 31, 2013
		Recorded				Unpaid				Reserve				Cumulative				Average				Interest Paid YTD
		Investment				Principal								Charge-Offs				Recorded
																		Investment
Total Impaired with Reserve
One- to four-family		$	12,263				12,674				2,631				411				13,256				577
Multi family			13,352				13,400				2,196				48				14,047				660
Home equity			1,427				1,427				862				-				1,536				59
Construction and land			3,087				3,087				624				-				3,092				93
Commercial real estate			839				1,324				370				485				1,339				35
Consumer			-				-				-				-				-				-
Commercial			569				569				258				-				570				1
		$	31,537				32,481				6,941				944				33,840				1,425
Total Impaired with no Reserve
One- to four-family		$	24,801				30,519				-				5,718				30,629				1,080
Multi family			3,869				4,902				-				1,033				5,431				114
Home equity			529				529				-				-				533				12
Construction and land			3,440				6,133				-				2,693				6,135				62
Commercial real estate			459				523				-				64				524				27
Consumer			17				17				-				-				19				1
Commercial			11				11				-				-				11				1
		$	33,126				42,634				-				9,508				43,282				1,297
Total Impaired
One- to four-family		$	37,064				43,193				2,631				6,129				43,885				1,657
Multi family			17,221				18,302				2,196				1,081				19,478				774
Home equity			1,956				1,956				862				-				2,069				71
Construction and land			6,527				9,220				624				2,693				9,227				155
Commercial real estate			1,298				1,847				370				549				1,863				62
Consumer			17				17				-				-				19				1
Commercial			580				580				258				-				581				2
		$	64,663				75,115				6,941				10,452				77,122				2,722
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 $28.8 million of impaired loans as of December 31, 2014 for which no allowance has been provided, $3.7 million in charge-offs have been recorded to reduce the unpaid principal balance to an amount that is commensurate with the loan's 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 resulting in additional provisions to the allowance for loans losses or charge-offs.
The following presents data on troubled debt restructurings:
	As of December 31, 2014
	Accruing									Non-accruing								Total
	Amount					Number				Amount				Number				Amount				Number
	(dollars in thousands)
One- to four-family		$	4,724				8			$	10,233				55			$	14,957				63
Multi family			2,923				2				4,797				7				7,720				9
Home equity			-				-				98				1				98				1
Construction and land			1,866				2				-				-				1,866				2
Commercial real estate			1,306				1				170				1				1,476				2
		$	10,819				13			$	15,298				64			$	26,117				77
	As of December 31, 2013
	Accruing									Non-accruing								Total
	Amount					Number				Amount				Number				Amount				Number
	(dollars in thousands)
One- to four-family		$	6,218				13			$	11,875				70			$	18,093				83
Multi family			2,710				1				5,314				4				8,024				5
Home equity			-				-				972				3				972				3
Construction and land			1,408				1				833				2				2,241				3
Commercial real estate			-				-				257				2				257				2
		$	10,336				15			$	19,251				81			$	29,587				96
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.  Typical restructured terms include six to twelve months of principal forbearance, a reduction in interest rate or both.  In no instances have the restructured terms included a reduction of outstanding principal balance.  At December 31, 2014, $26.1 million in loans had been modified in troubled debt restructurings and $15.3 million of these loans were included in the non-accrual loan total.  The remaining $10.8 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 thus, 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 $1.5 million valuation allowance has been established as of December 31, 2014 with respect to the $26.1 million in troubled debt restructurings.  As of December 31, 2013, $2.6 million in valuation allowance had been established with respect to the $29.6 million in troubled debt restructurings.
If an updated credit department review indicates no other evidence of elevated credit risk and the borrower completes a minimum of six consecutive contractual payments, the loan is returned to accrual status at that time.
The following presents troubled debt restructurings by concession type at December 31, 2014 and 2013:
	As of December 31, 2014
	Performing in								In Default								Total
	accordance with
	modified terms
	Amount				Number				Amount				Number				Amount				Number
	(dollars in thousands)
Interest reduction and principal forbearance		$	15,306				36				2,014				7				17,320				43
Principal forbearance			490				3				2,632				1				3,122				4
Interest reduction			4,875				11				800				19				5,675				30
		$	20,671				50				5,446				27				26,117				77
	As of December 31, 2013
	Performing in								In Default								Total
	accordance with
	modified terms
	Amount				Number				Amount				Number				Amount				Number
	(dollars in thousands)
Interest reduction and principal  forbearance		$	15,160				37				3,638				19				18,798				56
Principal forbearance			5,240				5				-				-				5,240				5
Interest reduction			3,317				11				2,232				24				5,549				35
		$	23,717				53				5,870				43				29,587				96
The following presents data on troubled debt restructurings:
	For the Year Ended
	31-Dec-14								31-Dec-13
	Amount				Number				Amount				Number
	(dollars in thousands)								(dollars in thousands)
Loans modified as a troubled debt restructure
One- to four-family		$	2,939				14				1,682				9
Multi family			1,337				5				-				-
Home equity			98				1				37				1
Commercial real estate			1,306				1				-				-
		$	5,680				21				1,719				10
There were no troubled debt restructurings within the past twelve months for which there was a default during the year ended December 31, 2014 or December 31, 2013.
The following table presents data on non-accrual loans:
		As of December 31,
		2014				2013
		(Dollars in Thousands)
Residential
One- to four-family		$	23,918				30,207
Multi family			12,001				13,498
Home equity			445				1,585
Construction and land			401				4,195
Commercial real estate			947				938
Commercial			299				521
Consumer			-				17
Total non-accrual loans		$	38,011				50,961
Total non-accrual loans to total loans			3.47	%			4.66	%
Total non-accrual loans to total assets			2.13	%			2.62	%

Office_Properties_and_Equipmen

Office Properties and Equipment	12 Months Ended
	Dec. 31, 2014
Office Properties and Equipment [Abstract]
Office Properties and Equipment	4)	Office Properties and Equipment
	Office properties and equipment are summarized as follows:
			December 31,
			2014			2013
			(In Thousands)
	Land		$	6,442			6,444
	Office buildings and improvements			28,085			27,634
	Furniture and equipment			16,339			15,195
				50,866			49,273
	Less accumulated depreciation			(25,304	)		(22,183	)
			$	25,562			27,090
	Depreciation of premises and equipment totaled $3.3 million, $2.7 million and $2.1 million for the years ended December 31, 2014, 2013 and 2012, respectively.
	The Company and certain subsidiaries are obligated under non-cancelable operating leases for other facilities and equipment.  Rent and equipment lease expense totaled $4.5 million, $3.3 million and $2.8 million for the years ended December 31, 2014, 2013 and 2012, respectively.  The appropriate minimum annual commitments under all non-cancelable lease agreements as of December 31, 2014 are as follows:
			Operating
			leases
			(In Thousands)
	Within one year		$	2,349
	One to two years			1,764
	Two to three years			1,482
	Three to four years			1,200
	Four through five years			755
	After five years			2,901
	Total		$	10,451

Real_Estate_Owned

Real Estate Owned	12 Months Ended
	Dec. 31, 2014
Real Estate Owned [Abstract]
Real Estate Owned [Text Block]	5)	Real Estate Owned
	Real estate owned is summarized as follows:
		December 31,
		2014				2013
		(In Thousands)
	One- to four-family		$	10,796			12,980
	Multi-family			2,210			3,040
	Construction and land			5,400			6,258
	Commercial real estate			300			385
			$	18,706			22,663
	The following table presents the activity in real estate owned:
			Year Ended December 31,
			2014			2013
			(In Thousands)
	Real estate owned at beginning of period		$	22,663			35,974
	Transferred in from loans receivable			16,645			13,552
	Sales			(19,057	)		(25,734	)
	Write downs			(1,523	)		(1,382	)
	Other activity			(22	)		253
	Real estate owned at end of period		$	18,706			22,663

Mortgage_Servicing_Rights

Mortgage Servicing Rights	12 Months Ended
	Dec. 31, 2014
Mortgage Servicing Rights [Abstract]
Mortgage Servicing Rights	6)	Mortgage Servicing Rights
	The following table presents the activity related to the Company's mortgage servicing rights:
			Year ended December 31,
			2014			2013
			(In Thousands)
	Mortgage servicing rights at beginning of the period		$	3,377		$	3,220
	Additions			4,181			4,077
	Amortization			(435	)		(1,125	)
	Sales			(4,602	)		(2,795	)
	Mortgage servicing rights at end of the period			2,521			3,377
	Valuation allowance at end of period			(10	)		-
	Mortgage servicing rights at the end of the period, net		$	2,511		$	3,377
	During the twelve months ended December 31, 2014, $1.7 billion in residential loans were originated for sale. During the same period, sales of loans held for sale totaled $1.6 billion, generating mortgage banking income of $78.0 million. The unpaid principal balance of loans serviced for others was $308.1 million and $563.7 million at December 31, 2014 and December 31, 2013 respectively. These loans are not reflected in the consolidated statements of financial condition.
	During the twelve months ended December 31, 2014, the Company sold mortgage servicing rights related to $713.0 million in loans receivable and with a book value of $4.6 million for $7.1 million resulting in a gain on sale of $2.5 million. During the twelve months ended December 31, 2013, the Company sold mortgage servicing rights related to $541.6 million in loans receivable and with a book value of $2.8 million for $5.4 million resulting in a gain on sale of $2.6 million.
	The following table shows the estimated future amortization expense for mortgage servicing rights at December 31, 2014 for the periods indicated:
				(In Thousands)
	Estimate for the years ended December 31:	2015		$	406
	2016				367
	2017				330
	2018				294
	2019				184
	Thereafter				930
	Total			$	2,511

Deposits

Deposits	12 Months Ended
	Dec. 31, 2014
Deposits [Abstract]
Deposits	7)	Deposits
	The aggregate amount of time deposit accounts with balances greater than $250,000 at December 31, 2014 and 2013 amounted to $34.6 million and $23.9 million, respectively.
	A summary of interest expense on deposits is as follows:
		Years ended December 31,
		2014			2013		2012
		(In Thousands)
	Interest-bearing demand deposits		$	16		13		23
	Money market and savings deposits			113		132		272
	Time deposits			4,797		5,070		9,182
			$	4,926		5,215		9,477
	A summary of the contractual maturities of time deposits at December 31, 2014 is as follows:
			(In Thousands)
	Within one year		$	417,484
	One to two years			195,873
	Two to three years			27,339
	Three to four years			9,463
	Four through five years			2,476
			$	652,635
	The Company's subscription offering related to its second step conversion closed on December 17, 2013. As a result, money market and savings deposits at December 31, 2013 include $388.7 million in proceeds from the offering. Of the total proceeds, $253.0 million was reserved for the purchase of common stock and remaining funds were returned to subscribers upon completion of the conversion.

Borrowings

Borrowings	12 Months Ended
	Dec. 31, 2014
Borrowings [Abstract]
Borrowings	8)	Borrowings
	Borrowings consist of the following:
			31-Dec-14					31-Dec-13
			Balance		Weighted			Balance		Weighted
					Average					Average
					Rate					Rate
			(In Thousands)
	Short-term repurchase agreements		$	-		0	%		21,197		3.19	%
	Federal Home Loan Bank advances maturing:
	2016			220,000		4.34	%		220,000		4.34	%
	2017			65,000		3.19	%		65,000		3.19	%
	2018			65,000		2.97	%		65,000		2.97	%
	Repurchase agreements maturing:
	2017			84,000		3.96	%		84,000		3.96	%
			$	434,000		3.89	%		455,197		3.86	%
	The short-term repurchase agreements 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 has no outstanding balance on a total commitment of $35.0 million at December 31, 2014.
	The $220.0 million in advances due in 2016 consist of eight advances with fixed rates ranging from 4.01% to 4.82% callable quarterly until maturity.
	The $65.0 million in advances due in 2017 consist of three advances with fixed rates ranging from 3.09% to 3.46% callable quarterly until maturity.
	The $65.0 million in advances due in 2018 consist of three advances with fixed rates ranging from 2.73% to 3.11% callable quarterly until maturity.
	The $84.0 million in repurchase agreements have fixed rates ranging from 2.89% to 4.31% callable quarterly until their maturity in 2017.  The repurchase agreements are collateralized by securities available for sale with an estimated fair value of $98.2 million at December 31, 2014.
	The Company selects loans that meet underwriting criteria established by the Federal Home Loan Bank Chicago (FHLBC) as collateral for outstanding advances. The Company's borrowings at the FHLBC are limited to 75% of the carrying value of unencumbered one- to four-family mortgage loans, 40% of the carrying value of home equity loans and 60% of the carrying value of over four-family loans. In addition, these advances are collateralized by FHLBC stock of $17.5 million at December 31, 2014 and $17.5 million at December 31, 2013. In the event of prepayment, the Company is obligated to pay all remaining contractual interest on the advance.

Regulatory_Capital

Regulatory Capital	12 Months Ended
	Dec. 31, 2014
Regulatory Capital [Abstract]
Regulatory Capital	9)	Regulatory Capital
	The Bank is 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 Bank's assets, liabilities, and certain off-balance-sheet items, as calculated under regulatory accounting practices. The Bank's capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors.
	Quantitative measures established by regulation to ensure capital adequacy require the Bank to maintain minimum amounts and ratios (set forth in the table below) of total and Tier I capital (as defined in the regulations) to risk-weighted assets (as defined) and of Tier I capital (as defined) to average assets (as defined). Management believes, as of December 31, 2014, that the Bank meets all capital adequacy requirements to which it is subject.
	Effective December 11, 2012, the WDFI and the Federal Deposit Insurance Corporation terminated a consent order originally agreed to by WaterStone Bank on November 25, 2009 and replaced it with a memorandum of understanding.  The memorandum of understanding required, among other things, maintenance of a minimum Tier I capital ratio of 8.5% and a minimum Total risk based capital ratio of 12.0%.  The memorandum of understanding was subsequently terminated by the WDFI and the Federal Deposit Insurance Corporation effective November 4, 2013. The Company and its subsidiaries were in full compliance with all regulatory orders throughout the term of each order.
	As of December 31, 2014 the most recent notification from the Federal Deposit Insurance Corporation categorized the Bank as quantitatively "well capitalized" under the regulatory framework for prompt corrective action. To be categorized as "well capitalized," the Bank must maintain minimum total risk-based, Tier I risk-based and Tier I leverage ratios, as set forth in the table below. There are no conditions or events since that notification that management believes have changed the Bank's category.
	As a state-chartered savings bank, the Bank is required to meet minimum capital levels established by the state of Wisconsin in addition to federal requirements. For the state of Wisconsin, regulatory capital consists of retained income, paid-in-capital, capital stock equity and other forms of capital considered to be qualifying capital by the Federal Deposit Insurance Corporation.
	The actual and required capital amounts and ratios for the Bank as of December 31, 2014 and 2013 are presented in the table below:
		31-Dec-14
		Actual						For Capital					To Be Well-Capitalized
								Adequacy Purposes					Under Prompt Corrective
													Action Provisions
		Amount			Ratio			Amount		Ratio			Amount			Ratio
		(Dollars In Thousands)
	WaterStone Bank
	Total capital (to risk-weighted assets)		$	357,514		31.98	%		89,428		8	%		111,785			10	%
	Tier I capital (to risk-weighted assets)			343,483		30.73	%		44,714		4	%		67,071			6	%
	Tier I capital (to average assets)			343,483		19.04	%		72,175		4	%		90,219			5	%
	State of Wisconsin (to total assets)			343,483		19.33	%		106,643		6	%		N/	A		N/	A
		31-Dec-13
	WaterStone Bank
	Total capital (to risk-weighted assets)		$	219,146		21.67	%		80,887		8	%		101,109			10	%
	Tier I capital (to risk-weighted assets)			206,364		20.41	%		40,443		4	%		60,665			6	%
	Tier I capital (to average assets)			206,364		12.48	%		66,161		4	%		82,701			5	%
	State of Wisconsin (to total assets)			206,364		10.65	%		116,252		6	%		N/	A		N/	A

Stock_Based_Compensation

Stock Based Compensation	12 Months Ended
	Dec. 31, 2014
Stock Based Compensation [Abstract]
Stock Based Compensation	10)	Stock Based Compensation
	Stock-Based Compensation Plan
	In 2006, the Company's shareholders approved the 2006 Equity Incentive Plan.  All stock awards granted under this plan vest over a period of five years and are required to be settled in shares of the Company's common stock.  The exercise price for all stock options granted is equal to the quoted NASDAQ market close price on the date that the awards were granted and expire ten years after the grant date, if not exercised.  All restricted stock grants are issued from previously unissued shares.
	Accounting for Stock-Based Compensation Plan
	The fair value of stock options granted is estimated on the grant date using a Black-Scholes pricing model.   The fair value of restricted shares is equal to the quoted NASDAQ market close price on the date of grant.  The fair value of stock grants is recognized as compensation expense on a straight-line basis over the vesting period of the grants.  Compensation expense is included in compensation, payroll taxes and other employee benefits in the consolidated statements of income.
	Assumptions are used in estimating the fair value of stock options granted.  The weighted average expected life of the stock options represent the period of time that the options are expected to be outstanding and is based on the SEC simplified approach to calculating expected term.  The risk-free interest rate is based on the U.S. Treasury yield curve in effect at the time of grant.  The expected volatility is based on the actual volatility of Waterstone Financial, Inc. stock from the original date of issue, October 4, 2005.  The following assumptions were used in estimating the fair value of options granted in the year ended 2012.  There were no options granted during the years ended December 31, 2014 or 2013.
			2012
	Dividend Yield			0	%
	Risk-free interest rate			0.25	%
	Expected volatility			74.53	%
	Weighted average expected life		6.5 years
	Weighted average per share value of options		$	1.25
	The Company estimates potential forfeitures of stock grants and adjusts compensation expense recorded accordingly.  The estimate of forfeitures will be adjusted over the requisite service period to the extent that actual forfeitures differ, or are expected to differ, from such estimates.  Changes in estimated forfeitures will be recognized in the period of change and will also impact the amount of stock compensation expense to be recognized in future periods.
	A summary of the Company's stock option activity for the years ended December 31, 2014, 2013 and 2012 is presented below.
	Stock Options		Shares			Weighted Average		Weighted Average		Aggregate
						Exercise Price		Years Remaining in		Intrinsic Value
								Contractual Term		(000's)
	Outstanding December 31, 2011			869,610		$	14.88		5.37		-
	Options exercisable at December 31, 2011			657,282			15.75		5.12		-
	Granted			279,811			1.85				-
	Exercised			(3,291	)		4.24				9
	Forfeited			(26,335	)		8.14				(72	)
	Outstanding December 31, 2012			1,119,795			11.95		5.69		1,622
	Options exercisable at December 31, 2012			816,939			15.12		4.31		80
	Granted			-			-				-
	Exercised			(1,097	)		1.72				(9	)
	Forfeited			(19,751	)		4.63				(112	)
	Outstanding December 31, 2013			1,098,947			12.11		4.18		2,744
	Options exercisable at December 31, 2013			870,707			14.23		3.28		636
	Granted			-			-				-
	Exercised			(31,624	)		1.73				361
	Forfeited			(96,576	)		13.33				(18	)
	Outstanding December 31, 2014			970,747			12.33		3.32		797
	Options exercisable at December 31, 2014			824,803			14.16		2.67		(829	)
	The following table summarizes information about the Company's nonvested stock option activity for the years ended December 31, 2014 and 2013:
	Stock Options		Shares			Weighted Average
						Grant Date Fair Value
	Nonvested at December 31, 2012			302,854		$	1.35
	Granted			-			-
	Vested			(62,546	)		1.41
	Forfeited			(12,070	)		1.36
	Nonvested at December 31, 2013			228,238			1.33
	Nonvested at December 31, 2013			228,238		$	1.33
	Granted			-			-
	Vested			(62,543	)		1.41
	Forfeited			(19,751	)		1.14
	Nonvested at December 31, 2014			145,944			1.32
	The Company amortizes the expense related to stock options as compensation expense over the vesting period.  During the year ended December 31, 2014, no options were granted, 96,576 were forfeited, of which 82,297 were vested.  During the year ended December 31, 2013, no options were granted, 19,751 were forfeited, of which 7,681 were vested.  During the year ended December 31, 2012, 279,811 options were granted and 26,335 were forfeited, of which 10,973 were vested.  Expense for the stock options granted of $80,000, $81,000 and $94,000 was recognized during the years ended December 31, 2014, 2013 and 2012, respectively.  At December 31, 2014, the Company had $138,000 in estimated unrecognized compensation costs related to outstanding stock options that is expected to be recognized over a weighted average period of 23 months.
	The following table summarizes information about the Company's restricted stock shares activity for the years ended December 31, 2014 and 2013:
	Restricted Stock		Shares			Weighted Average
						Grant Date Fair Value
	Nonvested at December 31, 2012			110,827		$	1.79
	Granted			-			-
	Vested			(23,043	)		2.09
	Forfeited			-			-
	Nonvested at December 31, 2013			87,784			1.72
	Nonvested at December 31, 2013			87,784			1.72
	Granted			-			-
	Vested			(21,945	)		1.73
	Forfeited			(16,459	)		1.73
	Nonvested at December 31, 2014			49,380			1.73
	The Company amortizes the expense related to restricted stock awards as compensation expense over the vesting period.  During the year ended December 31, 2014, no shares of restricted stock were granted and 16,459 shares were forfeited.  During the year ended December 31, 2013, no shares of restricted stock were granted and no shares were forfeited.  Expense for the restricted stock awards of $28,000, $45,000 and $51,000 was recorded for the years ended December 31, 2014, 2013 and 2012, respectively.  At December 31, 2014, the Company had $57,000 of unrecognized compensation expense related to restricted stock shares that is expected to be recognized over a weighted average period 24 months.

Employee_Benefit_Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2014
Employee Benefit Plans [Abstract]
Employee Benefit Plans	11)	Employee Benefit Plans
	The Company has two 401(k) profit sharing plans and trusts covering substantially all employees.  WaterStone Bank employees over 18 years of age are immediately eligible to participate in the Bank's Plan.  Waterstone Mortgage employees over 18 years of age are eligible to participate in its Plan as of the first of the month following their date of employment.  Participating employees may annually contribute pretax compensation in accordance with IRS limits.  The Company made matching contributions of $488,000, $486,000 and $70,000 to the Plans during the years ended December 31, 2014, 2013 and 2012 respectively.
	The Company has a nonqualified salary continuation plan for one former employee. This agreement provides for payments of specific amounts over a 10-year period subsequent to the employee's retirement. The deferred compensation liability was accrued ratably to the employee's respective normal retirement date. Payments made to the retired employee reduce the liability.  As of December 31, 2014 and 2013, approximately $384,000 and $535,000 was accrued related to this plan. This agreement is funded by a life insurance policy with a death benefit of $7.1 million and a cash surrender value of $3.9 million and $3.6 million at December 31, 2014 and 2013, respectively. The former employee has no interest in this policy.  There was no expense for compensation under this agreement during the years ended December 31, 2014, 2013 and 2012.

Employee_Stock_Ownership_Plan

Employee Stock Ownership Plan	12 Months Ended
	Dec. 31, 2014
Employee Stock Ownership Plan [Abstract]
Employee Stock Ownership Plan	12)	Employee Stock Ownership Plan
	All employees are eligible to participate in the WaterStone Bank Employee Stock Ownership Plan (the "Plan") after they attain twenty one years of age and complete twelve consecutive months of service in which they work at least 1,000 hours of service.  During the year ended December 31, 2005, the Plan borrowed $8.5 million from the Company and purchased 835,610 shares of common stock of the Company in the open market.  The Plan debt is secured by shares of the Company.  The Company has committed to make annual contributions to the Plan necessary to repay the loan, including interest.  The loan was scheduled to be repaid in ten annual installments through the year ended December 31, 2015.  A total of 83,561 shares remained from the purchase during the year ended 2014.
	During the year ended December 31, 2014, the Plan borrowed an additional $23.8 million from the Company and refinanced the remaining 83,561 shares, purchased an additional 2,024,000 shares of common stock of the Company in the open market.  While the shares are not released and allocated to Plan participants until the loan payment is made, the shares are deemed to be earned and are therefore, committed to be released throughout the service period.  As such, one-twentieth of the total 2,107,561 shares are scheduled to be released annually as shares are earned over a period of twenty years, beginning with the period ended December 31, 2014.  As the debt is repaid, shares are released from collateral and allocated to active participant accounts.  The shares pledged as collateral are reported as "Unearned ESOP shares" in the consolidated statement of financial condition.  As shares are committed to be released from collateral, the Company reports compensation expense equal to the average fair market price of the shares, and the shares become outstanding for earnings per share computations.  Compensation expense attributed to the ESOP was $1,200,000.0 million, $719,000 and $306,000, respectively for the years ended December 31, 2014, 2013 and 2012.
	The aggregate activity in the number of unearned ESOP shares, considering the allocation of those shares committed to be released as of December 31, is as follows:
			2014			2013
	Beginning ESOP shares			83,561			167,122
	Shares purchased under 2014 plan			2,024,000			-
	Shares committed to be released			(105,378	)		(83,561	)
	Unreleased shares			2,002,183			83,561
	Fair value of unreleased shares (2014 in millions, 2013 in thousands)		$	26,200.00			845

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2014
Income Taxes [Abstract]
Income Taxes	13)	Income Taxes
	The provision (benefit) for income taxes for the year ended December 31, 2014, 2013 and 2012 consists of the following:
			Years ended December 31,
			2014			2013			2012
			(In Thousands)
	Current:
	Federal		$	3,158			2,842			4,256
	State			301			385			435
				3,459			3,227			4,691
	Deferred:
	Federal			2,578			3,861			(12,664	)
	State			1,138			1,533			(4,231	)
				3,716			5,394			(16,895	)
	Total		$	7,175			8,621			(12,204	)
	The income tax provisions differ from that computed at the Federal statutory corporate tax rate for the years ended December 31, 2014, 2013 and 2012 as follows:
			Years ended December 31,
			2014			2013			2012
			(Dollars In Thousands)
	Income before income taxes		$	19,907			23,329			22,710
	Tax at Federal statutory rate (35%)			6,967			8,165			7,949
	Add (deduct) effect of:
	State income taxes net of Federal income tax benefit (expense)			936			1,246			(2,467	)
	Cash surrender value of life insurance			(451	)		(376	)		(375	)
	Non-deductible ESOP and stock option expense			39			(62	)		103
	Tax-exempt interest income			(514	)		(392	)		(185	)
	Reversal of federal valuation allowance on deferred taxes			-			-			(17,008	)
	Increase in tax exposure reserve			-			-			(184	)
	Other			198			40			(37	)
	Income tax provision (benefit)			7,175			8,621			(12,204	)
	Effective tax rate			36	%		37	%		(53.7	%)
	Deferred tax asset valuation allowances originally established in 2008 were fully reversed at December 31, 2012.  Under generally accepted accounting principles, a valuation allowance is required to be recognized if it is "more likely than not" that a deferred tax asset will not be realized.  The determination of the realizability of the deferred tax assets is highly subjective and dependent upon judgment concerning management's evaluation of both positive and negative evidence, the forecasts of future income, applicable tax planning strategies, and assessments of current and future economic and business conditions. Examples of positive evidence may include the existence of taxes paid in available carry back years as well as the probability that taxable income will be generated in future periods, while examples of negative evidence may include the cumulative losses in the current year and prior two years and general business and economic trends.  In addition, general uncertainty surrounding future economic and business conditions increased the potential volatility and uncertainty of projected earnings.  At December 31, 2011, the Company determined a valuation allowance was necessary, largely based on the negative evidence represented by a cumulative loss in the most recent three-year period caused by the significant loan loss provisions recorded during the period.  Cumulative pretax income, the existence of taxes paid and available for carry back in future years, applicable tax planning strategies and general economic conditions resulted in the conclusion that as of December 31, 2014 and 2013, it is more likely than not that net deferred tax assets will be realized in future periods.
	The significant components of the Company's net deferred tax assets (liabilities) included in prepaid expenses and other assets are as follows at December 31, 2014 and 2013:
			December 31,
			2014			2013
	Gross deferred tax assets:		(In Thousands)
	Fixed Assets		$	290			46
	Compensation agreements			149			210
	Restricted stock and stock options			911			991
	Allowance for loan losses			7,272			9,523
	Repurchase reserve for loans sold			145			122
	Real estate owned			1,001			2,401
	Nonaccrual interest			1,371			1,390
	Capital loss carryforward			465			467
	State NOL carryforward			230			508
	Unrealized loss on impaired securities			45			-
	Unrealized loss on securities available for sale, net			-			598
	Other			87			291
	Total gross deferred tax assets			11,966			16,547
	Gross deferred tax liabilities:
	Unrealized gain on securities available for sale, net			(1,130	)		-
	Mortgage servicing rights			(1,019	)		(1,365	)
	FHLB stock			(729	)		(736	)
	Deferred loan fees			(708	)		(622	)
	Deferred liabilities			(3,586	)		(2,723	)
	Net deferred tax assets		$	8,380			13,824
	The Company has a Wisconsin NOL carry forward of $4.5 million at December 31, 2014 which will begin to expire in 2028. The Company has a capital loss carry forward of $1.2 million which will expire if unused as of December 31, 2017.
	Under the Internal Revenue Code and Wisconsin Statutes, the Company was permitted to deduct, for tax years beginning before 1988, an annual addition to a reserve for bad debts. This amount differs from the provision for loan losses recorded for financial accounting purposes. Under prior law, bad debt deductions for income tax purposes were included in taxable income of later years only if the bad debt reserves were used for purposes other than to absorb bad debt losses. Because the Company did not intend to use the reserve for purposes other than to absorb losses, no deferred income taxes were provided. Retained earnings at December 31, 2014 include approximately $16.7 million for which no deferred Federal or state income taxes were provided.  Deferred income taxes have been provided on certain additions to the tax reserve for bad debts.
	The Company and its subsidiaries file consolidated federal and combined state tax returns. One subsidiary also files separate state income tax returns in certain states.  The Company is no longer subject to federal or state income tax examinations by tax authorities for years before 2010.
	A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:
			2014			2013
			(In Thousands)
	Balance at January 1		$	-			71
	Increases related to prior year tax positions			-			-
	Increases related to current year tax positions			-			-
Decreases related to prior year tax positions			-			(71	)
Balance at December 31		$	-			-
The Internal Revenue Service (IRS) commenced an examination of the Company's income tax returns for 2005 through 2009 in the first quarter of 2010.  In the fourth quarter of 2011, the IRS proposed significant adjustments related to the Company's deduction of expenses related to real estate owned and acquired through foreclosure, loan loss charge-offs and state tax deductions.  All of these significant proposed adjustments are timing differences which resulted in current tax expense offset by deferred tax benefit to be realized in future periods.  In the second quarter of 2012, a payment of $982,000 was made towards the proposed IRS adjustment.  Final consideration of the case was given by the Joint Committee on Taxation of the United States Department of the Treasury in 2013 and during the year ended December 31, 2013 all remaining previously unrecognized tax benefits have been recognized.

Offsetting_of_Assets_and_Liabi

Offsetting of Assets and Liabilities	12 Months Ended
	Dec. 31, 2014
Offsetting of Assets and Liabilities [Abstract]
liabilities subject to an enforceable master netting agreement [Text Block]	14) 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 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 agreements are 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 December 31, 2014 and December 31, 2013.
		Gross Recognized Liabililities		Gross Amounts Offset		Net Amounts Presented		Gross Amounts Not Offset		Net Amount
		(In thousands)
	31-Dec-14
	Repurchase Agreements
	Short-term	$	-		-		-		-		-
	Long-term		84,000		-		84,000		84,000		-
		$	84,000		-		84,000		84,000		-
	31-Dec-13
	Repurchase Agreements
	Short-term	$	17,526		-		17,526		17,526		-
	Long-term		84,000		-		84,000		84,000		-
		$	101,526		-		101,526		101,526		-

Financial_Instruments_with_Off

Financial Instruments with Off-Balance Sheet Risk	12 Months Ended
	Dec. 31, 2014
Financial Instruments with Off Balance Sheet Risk [Abstract]
Financial Instruments with Off-Balance Sheet Risk	15)	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 balance sheets. The contract or notional amounts of those instruments reflect the extent of involvement the Company has in particular classes of financial instruments.
		December 31,
		2014			2013
		(In Thousands)
	Financial instruments whose contract amounts represent potential credit risk:
	Commitments to extend credit under first mortgage loans(1)		$	18,889		9,637
	Commitments to extend credit under home equity lines of credit			14,775		14,699
	Unused portion of construction loans			12,333		8,637
	Unused portion of business lines of credit			11,599		10,364
	Standby letters of credit			766		696
	(1) Excludes commitments to originate loans held for sale, which are discussed in the following footnote
	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 December 31, 2014 and 2013.

Derivative_Financial_Instrumen

Derivative Financial Instruments	12 Months Ended
	Dec. 31, 2014
Derivative Financial Instruments [Abstract]
Derivative Financial Instruments	16)	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.  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 being a hedge relationship.  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 directly in earnings.  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 December 31, 2014, the Company had forward commitments to sell mortgage loans with an aggregate notional amount of $150.9  million and interest rate lock commitments with an aggregate notional amount of approximately $105.6 million.  The fair value of the forward commitments to sell mortgage loans at December 31, 2014 included a loss of $645,000 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, 2014 included a gain of $1.6 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 when the loan arising from exercise of the loan commitment is 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.
	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 its 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.

Fair_Value_Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2014
Fair Value Measurements [Abstract]
Fair Value Measurements	17)	Fair Values 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 - In general, fair values determined by Level 1 inputs use quoted prices in active markets for identical assets or liabilities that we have the ability to access.
	Level 2 inputs - Fair values determined by Level 2 inputs use inputs other than quoted prices included in Level 1 inputs that are observable for the asset or liability, either directly or indirectly.  Level 2 inputs include quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets where there are few transactions and inputs other than quoted prices that are observable for the asset or liability, such as interest rates and yield curves that are observable at commonly quoted intervals.
	Level 3 inputs - Level 3 inputs are unobservable inputs for the asset or liability and include situations where there is little, if any, market activity for the asset or liability.
	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 statement of financial position at their fair value on a recurring basis as of December 31, 2014 and December 31, 2013, and indicates the fair value hierarchy of the valuation techniques utilized to determine such fair value.
						Fair Value Measurements Using
		31-Dec-14				Level 1				Level 2				Level 3
		(In Thousands)
	Available for sale securities
	Mortgage-backed securities		$	117,128				-				117,128				-
	Collateralized mortgage obligations
	Government sponsored enterprise issued			59,071				-				59,071				-
	Government sponsored enterprise bonds			6,711				-				6,711				-
	Municipal securities			77,108				-				77,108				-
	Other debt securities			7,528				2,550				4,978				-
	Certificates of deposit			5,897				-				5,897				-
	Loans held for sale			125,073				-				125,073				-
	Mortgage banking derivative assets			1,644				-				-				1,644
	Mortgage banking derivative liabilities			645				-				-				645
						Fair Value Measurements Using
		31-Dec-13				Level 1				Level 2				Level 3
		(In Thousands)
	Available for sale securities
	Mortgage-backed securities		$	104,923				-				104,923				-
	Collateralized mortgage obligations
	Government sponsored enterprise issued			19,241				-				19,241				-
	Government sponsored enterprise bonds			17,934				-				17,934				-
	Municipal securities			58,793				-				58,793				-
	Other debt securities			5,160				5,160				-				-
	Certificates of deposit			7,367				-				7,367				-
	Loans held for sale			97,021				-				97,021				-
	Mortgage banking derivative assets			1,189				-				-				1,189
	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 and Level 3 in the fair value hierarchy.  The fair value of municipal 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 fair value of other debt securities, which includes a trust preferred security issued by a financial institution, is determined through quoted prices in active markets and is classified as Level 1 in the fair value hierarchy.
	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.
	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 table below presents reconciliation for all assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) during 2014 and 2013.
			Mortgage banking
			derivatives, net
	Balance at December 31, 2012		$	1,419
	Transfer into level 3			-
	Mortgage derivative gain, net			(230	)
	Balance at December 31, 2013			1,189
	Transfer into level 3			-
	Mortgage derivative gain, net			(190	)
	Balance at December 31, 2014		$	999
	Assets Recorded at Fair Value on a Non-recurring Basis
	The following table presents information about our assets recorded in our consolidated statement of financial position at their fair value on a non-recurring basis as of December 31, 2014 and December 31, 2013, and indicates the fair value hierarchy of the valuation techniques utilized to determine such fair value.
						Fair Value Measurements Using
		31-Dec-14				Level 1				Level 2				Level 3
		(In Thousands)
	Impaired loans, net (1)		$	18,758				-				-				18,758
	Real estate owned			18,706				-				-				18,706
	Mortgage servicing rights			9				-				-				9
						Fair Value Measurements Using
		31-Dec-13				Level 1				Level 2				Level 3
		(In Thousands)
	Impaired loans, net (1)		$	24,596				-				-				24,596
	Real estate owned			22,663				-				-				22,663
	_________
	(1) Represents collateral-dependent impaired loans, net, which are included in loans.
Loans – We do not record loans at fair value on a recurring basis.  On a non-recurring basis, loans determined to be impaired are analyzed to determine whether a collateral shortfall exists, and if such a shortfall exists, are recorded on our consolidated statements of financial condition at net realizable value of the underlying collateral.  Fair value is determined based on third party appraisals.  Appraised values are adjusted to consider disposition costs and also to take into consideration the age of the most recent appraisal.  Given the significance of the adjustments made to appraised values necessary to estimate the fair value of impaired loans, loans that have been deemed to be impaired are considered to be Level 3 in the fair value hierarchy of valuation techniques.  At December 31, 2014, loans determined to be impaired with an outstanding balance of $22.5 million were carried net of specific reserves of $3.7 million for a fair value of $18.8 million.  At December 31, 2013, loans determined to be impaired with an outstanding balance of $31.5 million were carried net of specific reserves of $6.9 million for a fair value of $24.6 million.  Impaired loans collateralized by assets which are valued in excess of the net investment in the loan do not require any specific reserves.
Real estate owned – On a non-recurring basis, real estate owned, is recorded in our consolidated statements of financial condition at the lower of cost or fair value.  Fair value is determined based on third party appraisals and, if less than the carrying value of the foreclosed loan, the carrying value of the real estate owned is adjusted to the fair value.  Appraised values are adjusted to consider disposition costs and also to take into consideration the age of the most recent appraisal.  Given the significance of the adjustments made to appraised values necessary to estimate the fair value of the properties, real estate owned is considered to be Level 3 in the fair value hierarchy of valuation techniques.  Changes in the fair value of real estate owned totaled $1.5 million and $1.4 million during the year ended December 31, 2014 and 2013, respectively and are recorded in real estate owned expense. At December 31, 2014 and December 31, 2013, real estate owned totaled $18.7 million and $22.7 million, respectively.
Mortgage servicing rights -  The Company utilizes an independent valuation from a third party which uses a discounted cash flow model to estimate the fair value of mortgage servicing rights.  The model utilizes prepayment assumptions to project cash flows related to the mortgage servicing rights based upon the current interest rate environment, which is then discounted to estimate an expected fair value of the mortgage servicing rights.   The model considers characteristics specific to the underlying mortgage portfolio, such as: contractually specified servicing fees, prepayment assumptions, delinquency rates, late charges and costs to service.  Given the significance of the unobservable inputs utilized in the estimation process, mortgage servicing rights are classified as Level 3 within the fair value hierarchy.  The Company records the mortgage servicing rights at the lower of amortized cost or fair value.  For the purpose of measuring impairment, mortgage servicing rights are stratified based upon predominent risk charateristics of the underlying loans.  At December 31, 2014, the Company determined that the mortgage servicing rights were partially impaired, and as a result, recorded an impairment valuation allowance of $10,000.  At December 31, 2013, there was no impairment identified for mortgage servicing rights.
For Level 3 assets and liabilities measured at fair value on a recurring or non-recurring basis as of December 31, 2014, the significant unobservable inputs used in the fair value measurements were as follows:
		Fair Value at				Significant		Significant Unobservable Input Value
		31-Dec-14			Valuation	Unobservable		Minimum				Maximum
					Technique	Inputs		Value				Value
Mortgage banking derivatives		$	999		Pricing models	Pull through rate			53.1	%			100	%
Impaired loans			18,758		Market approach	Disount rates applied to appraisals			15	%			30	%
Real estate owned			18,706		Market approach	Disount rates applied to appraisals			0	%			89.4	%
Mortgage servicing rights			9		Pricing models	Prepayment rate			7	%			36.3	%
						Discount rate			10	%			11	%
						Cost to service		$	71.75			$	828.26
___________
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.
The significant unobservable inputs used in the fair value measurement of collateral for collateral-dependent impaired loans and real estate owned included in the above table primarily relate to discounting criteria applied to independent appraisals received with respect to the collateral.  Discounts applied to the appraisals are dependent on the vintage of the appraisal as well as the marketability of the property.  The discount factor is computed using actual realization rates on properties that have been foreclosed upon and liquidated in the open market.
The significant unobservable inputs used in the fair value measurement or mortgage servicing rights include the prepayment rate, discount rate and cost to service.  The prepayment rate represents the assumed rate of prepayment of the outstanding principal balance of the underlying mortgage notes. Significant increases (decreases) in any of those inputs in isolation could result in a significantly lower (higher) fair value measurement. Although the prepayment rate and discount rate are not directly interrelated, they will generally move in opposite directions.
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 at December 31, 2014 and December 31, 2013:
		31-Dec-14																31-Dec-13
		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		$	172,820				172,820				167,370				5,450		-		429,169		429,169		429,169		-		-
Securities available-for-sale			273,443				273,443				2,550				270,893		-		213,418		213,418		5,160		208,258		-
Loans held for sale			125,073				125,073				-				125,073		-		97,021		97,021		-		97,021		-
Loans receivable			1,094,990				1,184,398				-				-		1,184,398		1,092,676		1,117,959		-		-		1,117,959
FHLB stock			17,500				17,500				-				17,500		-		17,500		17,500		-		17,500		-
Accrued interest receivable			4,029				4,029				4,029				-		-		3,804		3,804		3,804		-		-
Mortgage servicing rights			2,511				2,808				-				-		2,808		3,377		5,829		-		-		5,829
Mortgage banking derivative assets			1,644				1,644				-				-		1,644		1,189		1,189		-		-		1,189
Financial Liabilities
Deposits			863,960				866,173				211,325				654,848		-		1,244,741		1,246,541		606,991		639,550		-
Advance payments by borrowers for taxes			4,991				4,991				4,991				-		-		2,482		2,482		2,482		-		-
Borrowings			434,000				459,484				-				459,484		-		455,197		491,053		21,197		469,856		-
Accrued interest payable			1,600				1,600				1,600				-		-		1,595		1,595		1,595		-		-
Mortgage banking derivative liabilities			645				645				-				-		645		-		-		-		-		-
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 for these short-term instruments.
Securities
The fair value of securities is 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
Loans determined to be impaired are analyzed to determine whether a collateral shortfall exists, and if such a shortfall exists, are recorded on our consolidated statements of financial condition at fair value.  Fair value is determined based on third party appraisals.  Appraised values are adjusted to consider disposition costs and also to take into consideration the age of the most recent appraisal.  With respect to loans that are not considered to be impaired, fair value is estimated by discounting the future contractual cash flows using discount rates that that reflect a current rate offered to borrowers of similar credit standing for the remaining term to maturity.  This method of estimating fair value does not incorporate the exit-price concept of fair value prescribed by ASC 820-10 and generally produces a higher fair value.
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.
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 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.  On the Company's Consolidated Statements of 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.

Earnings_Loss_Per_Share

Earnings (Loss) Per Share	12 Months Ended
	Dec. 31, 2014
Earnings (Loss) Per Share [Abstract]
Earnings (Loss) Per Share	18)	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, excluding outstanding participating securities.  Participating securities include unvested restricted shares.  Unvested restricted shares are considered participating securities because holders of these securities have the right to receive dividends at the same rate as holders of the Company's common stock.  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.  Unvested restricted stock and stock options are considered outstanding for diluted earnings per share only.
			For the year ended December 31,
			2014		2013		2012
			(In Thousands, except per share amounts)
	Net income			12,732		14,708		34,914
	Net income available to unvested restricted stockholders			19		38		113
	Net income available to common stockholders		$	12,713		14,670		34,801
	Weighted average shares outstanding			33,406		34,185		34,076
	Effect of dilutive potential common shares			237		254		118
	Diluted weighted average shares outstanding			33,643		34,439		34,194
	Basic income per share		$	0.38		0.43		1.02
	Diluted income per share		$	0.38		0.43		1.02

Condensed_Parent_Company_Only_

Condensed Parent Company Only Statements	12 Months Ended
	Dec. 31, 2014
Condensed Parent Company Only Statements [Abstract]
Condensed Parent Company Only Statements	19)	Condensed Parent Company Only Statements
	Statements of Financial Condition
			December 31,
			2014			2013
			(In Thousands)
	Assets
	Cash and cash equivalents		$	101,637			349
	Securities available for sale (at fair value)			2,550			5,160
	Investment in subsidiaries			345,234			205,776
	Other assets			2,596			3,276
	Total Assets		$	452,017			214,561
	Liabilities and shareholders' equity
	Liabilities:
	Other liabilities			1,780			89
	Shareholders' equity
	Preferred Stock (par value $.01 per share), Authorized - 50,000,000 shares in 2014 and 20,000,000 in 2013, no shares issued			-			-
	Common stock (par value $.01 per share), Authorized - 100,000,000 shares in 2014 and 200,000,000 in 2013, Issued - 34,420,094 in 2014 and 34,073,670 in 2013, Outstanding -  34,420,094 in 2014 and 31,349,317 in 2013			344			341
	Additional paid-in-capital			313,894			110,480
	Retained earnings			157,304			151,195
	Unearned ESOP shares			(22,552	)		(854	)
	Treasury stock (0 in 2014 and 2,724,353 in 2013), at cost			-			(45,261	)
	Accumulated other comprehensive (loss) income (net of taxes)			1,247			(1,429	)
	Total shareholders' equity			450,237			214,472
	Total liabilities and shareholders' equity		$	452,017			214,561
	Statements of Operations
			For the year ended December 31,
			2014			2013			2012
			(In Thousands)
	Interest income		$	1,078			586			644
	Equity in income of subsidiaries			12,431			14,468			33,448
	Total income			13,509			15,054			34,092
	Compensation			52			(118	)		(523	)
	Professional fees			2			16			3
	Other expense			370			287			279
	Total expense (income)			424			185			(241	)
	Income before income tax expense			13,085			14,869			34,333
	Income tax expense (benefit)			353			161			(581	)
	Net income		$	12,732			14,708			34,914
	Statements of Cash Flows
			For the year ended December 31,
			2014			2013			2012
			(In Thousands)
	Cash flows from operating activities
	Net income		$	12,732			14,708			34,914
	Adjustments to reconcile net income to net cash provided by (used in) operating activities:
	Amortization of unearned ESOP			1,217			718			306
	Stock based compensation			109			126			145
	Deferred income taxes			80			(21	)		(954	)
	Equity in (earnings) loss of subsidiaries			(12,431	)		(14,468	)		(33,448	)
	Change in other assets and liabilities			599			(1,051	)		(1,147	)
	Net cash provided by (used in) operating activities			2,306			12			(184	)
	Cash flows used in investing activities:
	Capital contributions to subsidiary			(124,211	)		-			-
	Call of debt securities			2,609			-			-
	Net cash used in investing activities			(121,602	)		-			-
	Cash dividends on Common Stock			(5,003	)		-			-
	Financing for purchase of ESOP shares			(22,884	)		-			-
	Proceeds from stock option exercises			49			-			-
	Proceeds/refunds from stock offering			248,422			-			-
	Net cash provided by financing activities			220,584			-			-
	Net increase (decrease) in cash			101,288			12			(184	)
	Cash and cash equivalents at beginning of year			349			337			521
	Cash and cash equivalents at end of year		$	101,637			349			337

Segment_and_Related_Informatio

Segment and Related Information	12 Months Ended
	Dec. 31, 2014
Segments and Related Information [Abstract]
Segments and Related Information	20)	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. 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. 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 purpose of sale on the secondary market. Mortgage banking products and services are provided by offices in 16 states.
			As of or for the Year ended December 31, 2014
			Community			Mortgage		Holding			Consolidated
			Banking			Banking		Company and
								Other
			(in thousands)
	Net interest income		$	39,591			1,051		665			41,307
	Provision for loan losses			750			400		-			1,150
	Net interest income after provision for loan losses			38,841			651		665			40,157
	Noninterest income			3,264			81,710		(406	)		84,568
	Noninterest expenses:
	Compensation, payroll taxes, and other employee benefits			14,915			54,626		(369	)		69,172
	Occupancy, office furniture, and equipment			3,350			7,019		-			10,369
	FDIC insurance premiums			1,395			-		-			1,395
	Real estate owned			2,473			9		-			2,482
	Other			4,819			16,616		(35	)		21,400
	Total noninterest expenses			26,952			78,270		(404	)		104,818
	Income before income taxes			15,153			4,091		663			19,907
	Income taxes			5,173			1,649		353			7,175
	Net income		$	9,980			2,442		310			12,732
	Total Assets		$	1,758,707			145,980		(121,307	)		1,783,380
			As of or for the Year ended December 31, 2013
			Community			Mortgage		Holding			Consolidated
			Banking			Banking		Company and
								Other
			(in thousands)
	Net interest income		$	38,148			557		501			39,206
	Provision for loan losses			4,472			60		-			4,532
	Net interest income after provision for loan losses			33,676			497		501			34,674
	Noninterest income			3,134			84,879		(214	)		87,799
	Noninterest expenses:
	Compensation, payroll taxes, and other employee benefits			13,526			55,484		(203	)		68,807
	Occupancy, office furniture and equipment			3,052			5,194		(81	)		8,165
	FDIC insurance premiums			1,986			-		-			1,986
	Real estate owned			255			-		-			255
	Other			4,197			15,565		169			19,931
	Total noninterest expenses			23,016			76,243		(115	)		99,144
	Income before income taxes			13,794			9,133		402			23,329
	Income taxes			4,777			3,682		162			8,621
	Net income		$	9,017			5,451		240			14,708
	Total Assets		$	1,895,833			119,401		(68,195	)		1,947,039
			As of or for the Year ended December 31, 2012
			Community			Mortgage		Holding			Consolidated
			Banking			Banking		Company and
								Other
			(in thousands)
	Net interest income		$	40,973			470		502			41,945
	Provision for loan losses			8,250			50		-			8,300
	Net interest income after provision for loan losses			32,723			420		502			33,645
	Noninterest income			3,259			87,944		-			91,203
	Noninterest expenses:
	Compensation, payroll taxes, and other employee benefits			13,424			50,748		(665	)		63,507
	Occupancy, office furniture and equipment			3,112			3,856		-			6,968
	FDIC insurance premiums			3,390			-		-			3,390
	Real estate owned			8,746			-		-			8,746
	Other			4,728			14,517		282			19,527
	Total noninterest expenses			33,400			69,121		(383	)		102,138
	Income before income taxes (benefit)			2,582			19,243		885			22,710
Income taxes (benefit)			(19,347	)		7,724		(581	)		(12,204	)
Net income		$	21,929			11,519		1,466			34,914
Total Assets		$	1,589,314			147,699		(75,937	)		1,661,076

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2014
Summary of Significant Accounting Policies [Abstract]
Organization	(a)      Plan of Conversion and Reorganization
	On June 6, 2013, the Board of Directors of Lamplighter Financial, MHC ("MHC") and the Board of Directors of Waterstone Financial, Inc., a federal corporation, ("Waterstone-Federal") adopted a Plan of Conversion and Reorganization (the "Plan"). Pursuant to the Plan, Waterstone Financial, Inc., a Maryland corporation, ("New Waterstone") was organized and the MHC converted from the mutual holding company form of organization to the fully public form on January 22, 2014.  As part of the conversion, the MHC's ownership interest of Waterstone-Federal was offered for sale in a public offering. A total of 25,300,000 shares were sold in the offering at a price $10.00 per share, resulting in gross proceeds of $253.0 million.  Expenses related to the offering totaled approximately $4.7 million.  The existing publicly held shares of Waterstone-Federal were exchanged for new shares of common stock of New Waterstone at a conversion ratio of 1.0973-to-one.  The exchange ratio ensured that immediately after the conversion and public offering, the public shareholders of Waterstone-Federal owned the same aggregate percentage of New Waterstone common stock that they owned immediately prior to that time (excluding shares purchased in the stock offering and cash received in lieu of fractional shares). When the conversion and public offering was completed, New Waterstone became the holding company of WaterStone Bank SSB and succeeded to all of the business and operations of Waterstone-Federal and each of Waterstone-Federal and Lamplighter Financial, MHC ceased to exist.  A total of 34,405,458 shares of New Waterstone common stock were outstanding after the completion of the offering and exchange.
	The Plan provided for the establishment of special "liquidation accounts" for the benefit of certain depositors of WaterStone Bank in an amount equal to the greater of the MHC's ownership interest in the retained earnings of the Company as of the date of the latest balance sheet contained in the prospectus or the retained earnings of WaterStone Bank at the time it reorganized into the MHC. Following the completion of the conversion, under the rules of the Board of Governors of the Federal Reserve System, WaterStone Bank is not permitted to pay dividends on its capital stock to Waterstone Financial, Inc., its sole shareholder, if WaterStone Bank's shareholder's equity would be reduced below the amount of the liquidation accounts. The liquidation accounts will be reduced annually to the extent that eligible account holders have reduced their qualifying deposits. Subsequent increases will not restore an eligible account holder's interest in the liquidation accounts.
	Share and per share amounts have been restated to reflect the completion of our second-step conversion on January 22, 2014 at a conversion ratio of 1.0973 unless noted otherwise.
	New Waterstone did not engage in any business prior to the completion of the mutual-to-stock conversion of Lamplighter Financial, MHC on January 22, 2014. Consequently, these financial statements and footnotes reflect the financial condition and operating results of Waterstone-Federal and its subsidiaries, including the Bank, until January 22, 2014, and of New Waterstone, and its subsidiaries, including the Bank, thereafter. The words "Waterstone Financial," "we" and "our" thus are intended to refer to Waterstone-Federal and its subsidiaries with respect to matters and time periods occurring on or before January 22, 2014, and to New Waterstone and its subsidiaries with respect to matters and time periods occurring thereafter.
Nature of Operations		b)	Nature of Operations
	The Company is a one-bank holding company with two operating segments – community banking and mortgage banking.  The Bank is principally engaged in the business of attracting deposits from the general public and using such deposits to originate real estate, business and consumer loans.
	The Bank provides a full range of financial services to customers through branch locations in southeastern Wisconsin. In addition, the Bank has a loan production office in Minneapolis, Minnesota.  The Bank is subject to the regulations of certain federal and state agencies and undergoes periodic examinations by those regulatory authorities.
	The Bank owns a mortgage banking subsidiary that originates residential real estate loans held for sale at various branch offices across the country.  Mortgage banking volume fluctuates widely given movements in interest rates.  Mortgage banking income is reported as a single line item in the statements of operations while mortgage banking expense is distributed among the various noninterest expense lines.  Compensation, payroll taxes and other employee benefits expense varies directly with mortgage banking income.
Principles of Consolidation		c)	Principles of Consolidation
	The consolidated financial statements include the accounts and operations of Waterstone Financial, Inc. and its wholly owned subsidiary, WaterStone Bank.  The Bank has the following wholly owned subsidiaries: Wauwatosa Investments, Inc., Waterstone Mortgage Corporation, and Main Street Real Estate Holdings, LLC.. All significant intercompany accounts and transactions have been eliminated in consolidation.
Use of Estimates		d)	Use of Estimates
	The preparation of the 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, income taxes, and fair value measurements. Actual results could differ from those estimates and the current economic environment has increased the degree of uncertainty inherent in those estimates and assumptions.
Cash and Cash Equivalents		e)	Cash and Cash Equivalents
	The Company considers federal funds sold and highly liquid debt instruments with a maturity of three months or less when purchased to be cash equivalents.
Securities		f)	Securities
	Available for Sale Securities
	At the time of purchase, investment securities are classified as available for sale, as management has the intent and ability to hold such securities for an indefinite period of time, but not necessarily to maturity.  Any decision to sell investment securities available for sale would be based on various factors, including, but not limited to asset/liability management strategies, changes in interest rates or prepayment risks, liquidity needs, or regulatory capital considerations.  Available for sale securities are carried at fair value, with the unrealized gains and losses, net of deferred tax, reported as a separate component of equity, accumulated other comprehensive income.  The cost of debt securities is adjusted for amortization of premiums and accretion of discounts to maturity or, in the case of mortgage-backed securities and collateralized mortgage obligations, over the estimated life of the security. Such amortization is included in interest income from securities.  Realized gains or losses on securities sales (using specific identification method) are included in other income.  Declines in value judged to be other than temporary are included in net impairment losses recognized in earnings in the consolidated statements of operations.
	Other Than Temporary Impairment
	One of the significant estimates related to securities is the evaluation of investments for other than temporary impairment.  The Company assesses  investment securities with unrealized loss positions for other than temporary impairment on at least a quarterly basis.  When the fair value of an investment is less than its amortized cost at the balance sheet date of the reporting period for which impairment is assessed, the impairment is designated as either temporary or other than temporary.  In evaluating other than temporary impairment, management considers the length of time and extent to which the fair value has been less than cost and the expected recovery period of the security, the financial condition and near-term prospects of the issuer, and the intent and ability of the Company to retain its investment in the issuer for a period of time sufficient to allow for any anticipated recovery in fair value in the near term.  Declines in the fair value of investment securities below amortized cost are deemed to be other than temporary when the Company cannot assert that it will recover its amortized cost basis, including whether the present value of cash flows expected to be collected is less than the amortized cost basis of the security. If it is more likely than not that the Company will be required to sell the security before recovery or if the Company has the intent to sell, an other than temporary impairment write down is recognized in earnings equal to the difference between the security's amortized cost and its fair value.  If it is not more likely than not that the Company will be required to sell the security before recovery and if the Company does not intend to sell, the other than temporary impairment write down is separated into an amount representing credit loss, which is recognized in earnings, and an amount related to other factors, which is recognized as a separate component of equity.  Following the recognition of an other than temporary impairment representing credit loss, the book value of an investment less the impairment loss realized becomes the new cost basis.  Because the Company's assessments are based on factual information as well as subjective information available at the time of assessment, the determination as to whether an other than temporary impairment exists and, if so, the amount considered other than temporarily impaired, or not impaired, is subjective and, therefore, the timing and amount of other than temporary impairments constitute material estimates that are subject to significant change.
	Federal Home Loan Bank Stock
	Federal Home Loan Bank stock is carried at cost, which is the amount that the stock is redeemable by tendering to the FHLBC or the amount at which shares can be sold to other FHLBC members.  FHLBC dividends are recognized as income on their ex-dividend date.
Loans Held for Sale		g)	Loans Held for Sale
	The origination of residential real estate loans is an integral component of the business of the Company. The Company generally sells its originations of long-term fixed interest rate mortgage loans in the secondary market, and on a selective basis, retains the rights to service the loans sold. Gains and losses on the sales of these loans are determined using the specific identification method. Mortgage loans originated for sale are generally sold within 45 days after closing.
	The Company has elected to carry loans held for sale at fair value.  Fair value is generally determined by estimating a gross premium or discount, which is derived from pricing currently observable in the market.  The amount by which cost differs from market value is accounted for as a valuation adjustment to the carrying value of the loans.  Changes in value are included in mortgage banking income in the consolidated statements of operations.
	Costs to originate loans held for sale are expensed as incurred and are included on the appropriate noninterest expense lines of the statements of operations.  Salaries, commissions and related payroll taxes are the primary costs to originate and comprise approximately 69.8 % of total mortgage banking noninterest expense.
	The value of mortgage loans held for sale and other residential mortgage loan commitments to customers are hedged by utilizing both best efforts and mandatory forward commitments to sell loans to investors in the secondary market. Such forward commitments are generally entered into at the time when applications are taken to protect the value of the mortgage loans from increases in market interest rates during the period held. The Corporation recognizes revenue associated with the expected future cash flows of servicing loans at the time a forward loan commitment is made, as required under Securities and Exchange Commission Staff Accounting Bulletin No. 109, Written Loan Commitments Recorded at Fair Value Through Earnings.
Loans Receivable and Related Interest Income		h)	Loans Receivable and Related Interest Income
	Loans are classified as held for investment when management has both the intent and ability to hold the loan for the foreseeable future, or until maturity or payoff.  Loans are carried at the principal amount outstanding, net of any unearned income, charge-offs and unamortized deferred fees and costs.  Loan origination and commitment fees and certain direct loan origination costs are deferred and the net amount amortized as an adjustment of the related loan yield. Amortization is based on a level-yield method over the contractual life of the related loans or until the loan is paid in full.
	Loan interest income is recognized on the accrual basis.  Accrual of interest is generally discontinued either when reasonable doubt exists as to the full, timely collection of interest or principal, or when a loan becomes contractually past due more than 90 days with respect to interest or principal. At that time, previously accrued and uncollected interest on such loans is reversed and additional income is recorded only to the extent that payments are received and the collection of principal is reasonably assured.  Generally, loans are restored to accrual status when the obligation is brought current, has performed in accordance with the contractual terms for a reasonable period of time, and the ultimate collectability of the total contractual principal and interest is no longer in doubt.
	A loan is accounted for as a troubled debt restructuring if the Company, for economic reasons related to the borrower's financial condition, grants a concession to the borrower that it would not otherwise consider.  A troubled debt restructuring typically involves a modification of terms such as a reduction of the stated interest rate, a deferral of principal payments or a combination of both for a temporary period of time.  If the borrower was performing in accordance with the original contractual terms at the time of the restructuring, the restructured loan is accounted for on an accruing basis as long as the borrower continues to comply with the modified terms.  If the loan was not accounted for on an accrual basis at the time of restructuring, the restructured loan remains in non-accrual status until the loan completes a minimum of six consecutive contractual payments.
Allowance for Loan Losses		i)	Allowance for Loan Losses
	The allowance for loan losses is presented as a reserve against loans and represents the Bank's assessment of probable loan losses inherent in the loan portfolio.  The allowance for loan losses is established as losses are estimated to have occurred through a provision for loan losses charged to income.  Estimated loan losses are charged against the allowance when the loan balance is confirmed to be uncollectible directly or indirectly by the borrower or upon initiation of a foreclosure action by the Bank.  Subsequent recoveries, if any, are credited to the allowance as long as it is within 90 days of being transferred to real estate owned.
	The allowance provides for probable losses that have been identified with specific customer relationships and for probable losses believed to be inherent in the loan portfolio, but have not been specifically identified.  The Bank utilizes its own loss history to estimate inherent losses on loans. Although the Bank allocates portions of the allowance to specific loans and loan types, the entire allowance is available for any loan losses that occur.
	The Bank evaluates the need for specific valuation allowances on loans that are considered impaired. A loan is considered impaired when, based on current information and events, it is probable that the Bank will not be able to collect all amounts due according to the contractual terms of the loan agreement. Within the loan portfolio, all non-accrual loans and loans modified under troubled debt restructurings have been determined by the Bank to meet the definition of an impaired loan.  In addition, other one- to four-family, over four-family, construction and land, commercial real estate and commercial loans may be considered impaired loans.  A valuation allowance is established for an amount equal to the impairment when the carrying amount of the loan exceeds the present value of the expected future cash flows, discounted at the loan's original effective interest rate or the fair value of the underlying collateral.
	The Bank also establishes valuation allowances based on an evaluation of the various risk components that are inherent in the loan portfolio. The risk components that are evaluated include past loan loss experience; the level of non-performing and classified assets; current economic conditions; volume, growth, and composition of the loan portfolio; adverse situations that may affect the borrower's ability to repay; the estimated value of any underlying collateral; regulatory guidance; and other relevant factors.
	The appropriateness of the allowance for loan losses is approved quarterly by the Bank's board of directors. The allowance reflects management's best estimate of the amount needed to provide for the probable loss on impaired loans, as well as other credit risks of the Bank, and is based on a risk model developed and implemented by management and approved by the Bank's board of directors.
	Actual results could differ from this estimate, and future additions to the allowance may be necessary based on unforeseen changes in economic conditions. In addition, federal regulators periodically review the Bank's allowance for loan losses. Such regulators have the authority to require the Bank to recognize additions to the allowance at the time of their examination.
Real Estate Owned		j)	Real Estate Owned
	Real estate owned consists of properties acquired through, or in lieu of, loan foreclosure.  Real estate owned is transferred into the portfolio at estimated net realizable value.  To the extent that the net carrying value of the loan exceeds the estimated fair value of the property at the date of transfer, the excess is charged to the allowance for loan losses within 90 days of being transferred.  Subsequent write-downs to reflect current fair market value, as well as gains and losses upon disposition and revenue and expenses incurred in maintaining such properties, are treated as period costs and included in real estate owned in the consolidated statements of operations.
Mortgage Servicing Rights		k)	Mortgage Servicing Rights
	The Company sells residential mortgage loans in the secondary market and, on a selective basis, retains the right to service the loans sold.  Upon sale, a mortgage servicing rights asset is capitalized, which represents the then current fair value of future net cash flows expected to be realized for performing servicing activities.  Mortgage servicing rights, when purchased, are initially recorded at fair value.  Mortgage servicing rights are amortized over the period of estimated net servicing income, and assessed for impairment at each reporting date. Mortgage servicing rights are carried at the lower of the initial capitalized amount, net of accumulated amortization, or estimated fair value, and are included in other assets, net in the consolidated balance sheets. To the extent that the Company sells mortgage servicing rights, a gain is recognized for the amount of which sale proceeds exceed the remaining unamortized cost of the servicing rights that were sold. Gains on sale of mortgage serving rights are included in other noninterest income in the consolidated statements of operations.
Cash Surrender Value of Life Insurance		l)	Cash Surrender Value of Life Insurance
	The Company purchased bank owned life insurance on the lives of certain employees.  The Company is the beneficiary of the life insurance policies.  The cash surrender value of life insurance is reported at the amount that would be received in cash if the polices were surrendered.  Increases in the cash value of the policies and proceeds of death benefits received are recorded in non-interest income.  The increase in cash surrender value of life insurance is not subject to income taxes, as long as the Company has the intent and ability to hold the policies until the death benefits are received.
Office Properties and Equipment		m)	Office Properties and Equipment
	Office properties and equipment, including leasehold improvements and software, are stated at cost, net of depreciation and amortization. Depreciation and amortization are computed on the straight-line method over the estimated useful lives of the related assets. Leasehold improvements are amortized over the lease term, if shorter than the estimated useful life. Maintenance and repairs are charged to expense as incurred, while additions or major improvements are capitalized and depreciated over their estimated useful lives. Estimated useful lives of the assets are 10 to 30 years for office properties, 3 to 10 years for equipment, and 3 years for software. Rent expense related to long-term operating leases is recorded on the accrual basis.
Income Taxes		n)	Income Taxes
	The Company and its subsidiaries file consolidated federal and combined state income tax returns. The provision for income taxes is based upon income in the consolidated financial statements, rather than amounts reported on the income tax returns.  Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases, as well as net operating loss carry forwards.  Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled.  The effect on deferred tax assets and liabilities of a change in tax rates is recognized as income or expense in the period that includes the enactment date.
	The Company evaluates the realizability of its deferred tax assets on a quarterly basis.  Under generally accepted accounting principles, a valuation allowance is required to be recognized if it is "more likely than not" that a deferred tax asset will not be realized.  The determination of the realizability of the deferred tax assets is highly subjective and dependent upon judgment concerning management's evaluation of both positive and negative evidence, the forecasts of future income, applicable tax planning strategies, and assessments of current and future economic and business conditions.
	Positions taken in the Company's tax returns may be subject to challenge by the taxing authorities upon examination.  The benefit of uncertain tax positions are initially recognized in the financial statements only when it is more likely than not the position will be sustained upon examination by the tax authorities.  Such tax positions are both initially and subsequently measured as the largest amount of tax benefit that is greater than 50% likely of being realized upon settlement with the tax authority, assuming full knowledge of the position and all relevant facts.   Interest and penalties on income tax uncertainties are classified within income tax expense in the income statement.
Earnings Per Share		o)	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 shareholders by the weighted average number of common shares outstanding during the applicable period, excluding outstanding participating securities.  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.  Diluted EPS reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised.  Shares of the Employee Stock Ownership Plan committed to be released are considered outstanding for both common and diluted EPS.  Incentive stock compensation awards granted can result in dilution.
Other Comprehensive Income		p)	Comprehensive Income
	Comprehensive income is the total of reported net income and changes in unrealized gains or losses, net of tax, on securities available for sale.
Employee Stock Ownership Plan (ESOP)		q)	Employee Stock Ownership Plan (ESOP)
	Compensation expense under the ESOP is equal to the fair value of common shares released or committed to be released to participants in the ESOP in each respective period.  Common stock purchased by the ESOP and not committed to be released to participants is included in the consolidated statements of financial condition at cost as a reduction of shareholders' equity.
Impact of Recent Accounting Pronouncements		r)	Impact of Recent Accounting Pronouncements
	In July 2013, the FASB issued ASU No. 2013-11, "Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exits." This ASU provides that an unrecognized tax benefit, or a portion thereof, should be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward, except to the extent a net operating loss carryforward, a similar tax loss, or a tax credit carryforward is not available at the reporting date to settle any additional income taxes that would result from disallowance of a tax position, or the tax law does not require the entity to use, and the entity does not intend to use the deferred tax asset for such purpose. In these cases, the unrecognized tax benefit should be presented as a liability. This ASU is effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. Early adoption and retrospective application is permitted. The adoption of this accounting standard did not have a material impact on the Company's results of operations, financial position or liquidity.
	In January 2014, the FASB issued ASU No. 2014-04, "Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure." This ASU clarifies that an in substance repossession or foreclosure occurs, and a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either (1) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure or (2) the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar agreement. In addition, the amendment requires interim and annual disclosure of both the amount of foreclosed residential real estate property held by the creditor and the recorded investment in consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure in accordance with local requirements of the applicable jurisdiction. This amendment is effective for fiscal years, and interim periods within those years, beginning after December 15, 2014. An entity can elect to adopt the amendments using either a modified retrospective method or a prospective transition method. Early adoption is permitted. The Company is in the process of evaluating the impact of this standard to its results of operations, financial position, or liquidity.
	In May 2014, the FASB issued Accounting Standards Update (ASU) No. 2014-09, "Revenue from Contracts with Customers (Topic 606)." The ASU is a converged standard between the FASB and the IASB that provides a single comprehensive revenue recognition model for all contracts with customers across transactions and industries. The primary objective of the ASU is revenue recognition that represents the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The ASU is effective for interim and annual reporting periods beginning after December 15, 2016. The Company is in the process of evaluating the impact of this standard to its results of operations, financial position, and liquidity.
	In June 2014, the FASB issued ASU No. 2014-11, "Transfers and Servicing (Topic 860): Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures." This ASU requires secured borrowing accounting treatment for repurchase-to-maturity transactions and provides guidance on accounting for repurchase financing arrangements. This ASU is effective for interim and annual reporting periods beginning after December 15, 2014. The Company is in the process of evaluating the impact of this standard to its results of operations, financial position, and liquidity.
	In June 2014, the FASB also issued ASU No. 2014-12, "Compensation – Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could be Achieved after the Requisite Service Period." This ASU requires that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition and should not be reflected in estimating the grant-date fair value of the award. This ASU is effective for interim and annual reporting periods beginning after December 15, 2015 with earlier adoption permitted. The adoption of this standard is not expected to have a material impact to the Company's consolidated financial position or results of operations.

Securities_Policies

Securities (Policies)	12 Months Ended
	Dec. 31, 2014
Securities [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, 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_Instrumen1

Derivative Financial Instruments (Policies)	12 Months Ended
	Dec. 31, 2014
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.  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 being a hedge relationship.  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 directly in earnings.  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 December 31, 2014, the Company had forward commitments to sell mortgage loans with an aggregate notional amount of $150.9  million and interest rate lock commitments with an aggregate notional amount of approximately $105.6 million.  The fair value of the forward commitments to sell mortgage loans at December 31, 2014 included a loss of $645,000 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, 2014 included a gain of $1.6 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 when the loan arising from exercise of the loan commitment is 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.
	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 its 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_Tables

Securities (Tables)	12 Months Ended
	Dec. 31, 2014
Securities [Abstract]
Amortized cost and fair values of investment in securities available for sale	The amortized cost and fair value of the Company's investment in securities follow:
			31-Dec-14
			Amortized cost			Gross unrealized gains			Gross unrealized losses			Fair value
			(In Thousands)
	Mortgage-backed securities		$	115,670			1,582			(124	)		117,128
	Collateralized mortgage obligations
	Government sponsored enterprise issued			58,821			320			(70	)		59,071
	Mortgage related securities			174,491			1,902			(194	)		176,199
	Government sponsored enterprise bonds			6,750			2			(41	)		6,711
	Municipal securities			76,037			1,442			(371	)		77,108
	Other debt securities			7,404			159			(35	)		7,528
	Debt securities			90,191			1,603			(447	)		91,347
	Certificates of deposit			5,880			17			-			5,897
			$	270,562			3,522			(641	)		273,443
			31-Dec-13
			Amortized cost			Gross unrealized gains			Gross unrealized losses			Fair value
			(In Thousands)
	Mortgage-backed securities		$	104,462			1,192			(731	)		104,923
	Collateralized mortgage obligations
	Government sponsored enterprise issued			18,946			320			(25	)		19,241
	Mortgage related securities			123,408			1,512			(756	)		124,164
	Government sponsored enterprise bonds			18,171			4			(241	)		17,934
	Municipal securities			61,014			802			(3,023	)		58,793
	Other debt securities			5,000			160			-			5,160
	Debt securities			84,185			966			(3,264	)		81,887
	Certificates of deposit			7,350			32			(15	)		7,367
			$	214,943			2,510			(4,035	)		213,418
Amortized cost and fair values of investment securities by contractual maturity	The amortized cost and fair value of securities at December 31, 2014, by contractual maturity, are shown below. Expected maturities may differ from contractual maturities because issuers or borrowers may have the right to prepay obligations with or without prepayment penalties.
		31-Dec-14
		Amortized cost			Fair value
		(In Thousands)
	Debt securities:
	Due within one year		$	5,767			5,803
	Due after one year through five years			24,274			24,549
	Due after five years through ten years			40,505			40,487
	Due after ten years			25,525			26,405
	Mortgage-related securities			174,491			176,199
			$	270,562			273,443
Total proceeds and gross gains and losses from sales of investment securities available for sale	Total proceeds and gross gains and losses from sales of investment securities available for sale for each of periods listed below.
		December 31,
		2014				2013			2012
		(In Thousands)
	Gross gains		$	-			6			522
	Gross losses			-			(15	)		-
	Gains on sale of investment securities, net		$	-			(9	)		522
	Proceeds from sales of investment securities		$	-			921			30,089
Fair value and gross unrealized losses on securities available for sale and in a continuous unrealized loss position	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:
			31-Dec-14
			Less than 12 months						12 months or longer						Total
			Fair			Unrealized			Fair			Unrealized			Fair		Unrealized
			value			loss			value			loss			value		loss
			(In Thousands)
	Mortgage-backed securities		$	10,537			(13	)		12,489			(111	)		23,026		(124	)
	Collateralized mortgage obligations
	Government sponsored enterprise issued			23,131			(70	)		-			-			23,131		(70	)
	Government sponsored enterprise bonds			2,739			(11	)		2,970			(30	)		5,709		(41	)
	Municipal securities			5,671			(19	)		21,344			(352	)		27,015		(371	)
	Other debt securities			4,977			(35	)		-			-			4,977		(35	)
	Certificates of deposit			490			-			-			-			490		-
			$	47,545			(148	)		36,803			(493	)		84,348		(641	)
		31-Dec-13
		Less than 12 months							12 months or longer						Total
		Fair				Unrealized			Fair			Unrealized			Fair		Unrealized
		value				loss			value			loss			value		loss
		(In Thousands)
	Mortgage-backed securities		$	45,094			(539	)		5,349			(192	)		50,443		(731	)
	Collateralized mortgage obligations
	Government sponsored enterprise issued			5,669			(25	)		-			-			5,669		(25	)
	Government sponsored enterprise bonds			15,530			(241	)		-			-			15,530		(241	)
	Municipal securities			37,498			(2,546	)		4,708			(477	)		42,206		(3,023	)
	Certificates of deposit			3,660			(15	)		-			-			3,660		(15	)
			$	107,451			(3,366	)		10,057			(669	)		117,508		(4,035	)
Change in other-than-temporary credit related impairment charges on collateralized mortgage obligations for which a portion of OTTI related to other factors was recognized in other comprehensive loss	The following table presents the change in other-than-temporary credit related impairment charges on municipal securities 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, 2012		$	100
	Credit related impairments related to a security for which other-than-temporary impairment was not previously recognized			-
	Increase in credit related impairments related to securities for which an other-than-temporary impairment was previously recognized			-
	Reduction for sales of securities for which other-than-temporary was previously recognized			-
	Credit related impairments on securities as of December 31, 2013			100
	Credit related impairments related to a security for which other-than-temporary impairment was not previously recognized			-
	Increase in credit related impairments related to securities for which an other-than-temporary impairment was previously recognized			17
	Credit related impairments on securities as of December 31, 2014		$	117

Loans_Receivable_Tables

Loans Receivable (Tables)	12 Months Ended
	Dec. 31, 2014
Loan Receivable [Abstract]
Schedule of Components of Loans Receivable	Loans receivable at December 31, 2014 and 2013 are summarized as follows:
			December 31,
			2014				2013
	Mortgage loans:		(In Thousands)
	Residential real estate:
	One- to four-family		$	411,979				413,614
	Multi family			522,281				521,597
	Home equity			29,207				35,432
	Construction and land			17,081				31,905
	Commercial real estate			94,771				71,698
	Consumer			200				134
	Commercial loans			19,471				18,296
	Total loans receivable		$	1,094,990				1,092,676
Analysis of Past Due Loans Receivable	An analysis of past due loans receivable as of December 31, 2014 and 2013 follows:
			As of December 31, 2014
			1-59 Days Past				60-89 Days Past				Greater Than 90				Total Past Due				Current (3)				Total Loans
			Due (1)				Due (2)				Days
	Mortgage loans:		(In Thousands)
	Residential real estate:
	One- to four-family		$	3,767				3,743				12,196				19,706				392,273				411,979
	Multi family			462				280				11,092				11,834				510,447				522,281
	Home equity			268				153				250				671				28,536				29,207
	Construction and land			90				-				362				452				16,629				17,081
	Commercial real estate			225				-				947				1,172				93,599				94,771
	Consumer			-				-				-				-				200				200
	Commercial loans			34				-				265				299				19,172				19,471
	Total		$	4,846				4,176				25,112				34,134				1,060,856				1,094,990
			As of December 31, 2013
			1-59 Days Past				60-89 Days Past				Greater Than 90				Total Past Due				Current (3)				Total Loans
			Due (1)				Due (2)				Days
	Mortgage loans:		(In Thousands)
	Residential real estate:
	One- to four-family		$	4,994				5,236				17,499				27,729				385,885				413,614
	Multi family			804				1,293				7,743				9,840				511,757				521,597
	Home equity			373				205				465				1,043				34,389				35,432
	Construction and land			-				39				4,195				4,234				27,671				31,905
	Commercial real estate			287				-				357				644				71,054				71,698
	Consumer			-				-				-				-				134				134
	Commercial loans			-				-				521				521				17,775				18,296
	Total		$	6,458				6,773				30,780				44,011				1,048,665				1,092,676
	-1	Includes $1.6 million and $1.1 million for December 31, 2014 and 2013, respectively, which are on non-accrual status.
	-2	Includes $795,000 and $5.7 million for December 31, 2014 and 2013, respectively, which are on non-accrual status.
	-3	Includes $10.5 million and $12.9 million for December 31, 2014 and 2013, respectively, which are on non-accrual status.
Allowance for Loan Losses	A summary of the activity for the years ended December 31, 2014, 2013 and 2012 in the allowance for loan losses follows:
			One- to Four-				Multi				Home Equity				Construction				Commercial				Consumer			Commercial			Total
			Family				Family								and Land				Real Estate
			(In Thousands)
	Year ended December 31, 2014
	Balance at beginning of period		$	11,549				7,211				1,807				1,613				1,402				34			648			24,264
	Provision for loan losses			(1,081	)			3,205				(1,208	)			(505	)			721				(27	)		45			1,150
	Charge-offs			(2,424	)			(5,247	)			(191	)			(496	)			(199	)			(5	)		(293	)		(8,855	)
	Recoveries			1,833				189				14				75				27				6			3			2,147
	Balance at end of period		$	9,877				5,358				422				687				1,951				8			403			18,706
	Year ended December 31, 2013
	Balance at beginning of period		$	17,819				7,734				2,097				1,323				1,259				30			781			31,043
	Provision for loan losses			1,479				859				305				1,719				303				(2	)		(131	)		4,532
	Charge-offs			(8,706	)			(1,640	)			(630	)			(1,480	)			(160	)			-			(8	)		(12,624	)
	Recoveries			957				258				35				51				-				6			6			1,313
	Balance at end of period		$	11,549				7,211				1,807				1,613				1,402				34			648			24,264
	Year ended December 31, 2012
	Balance at beginning of period		$	17,475				8,252				1,998				2,922				941				28			814			32,430
	Provision for loan losses			6,149				534				559				(181	)			1,500				6			(267	)		8,300
	Charge-offs			(6,472	)			(1,108	)			(485	)			(1,668	)			(1,182	)			(4	)		(59	)		(10,978	)
	Recoveries			667				56				25				250				-				-			293			1,291
	Balance at end of period		$	17,819				7,734				2,097				1,323				1,259				30			781			31,043
Schedule of 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 the year ended December 31, 2014 follows:
			One- to Four-				Multi				Home Equity				Construction				Commercial				Consumer			Commercial			Total
			Family				Family								and Land				Real Estate
			(In Thousands)
	Allowance related to loans individually evaluated for impairment		$	2,386				731				63				13				526				-			7			3,726
	Allowance related to loans collectively evaluated for impairment			7,491				4,627				359				674				1,425				8			396			14,980
	Balance at end of period		$	9,877				5,358				422				687				1,951				8			403			18,706
	Loans individually evaluated for impairment		$	29,509				15,562				589				2,266				3,077				-			299			51,302
	Loans collectively evaluated for impairment			382,470				506,719				28,618				14,815				91,694				200			19,172			1,043,688
	Total gross loans		$	411,979				522,281				29,207				17,081				94,771				200			19,471			1,094,990
	A summary of the allowance for loan loss for loans evaluated individually and collectively for impairment by collateral class as of the year ended December 31, 2013 follows:
			One- to Four-				Multi				Home Equity				Construction				Commercial				Consumer			Commercial			Total
			Family				Family								and Land				Real Estate
			(In Thousands)
	Allowance related to loans individually evaluated for impairment		$	2,631				2,196				862				624				370				-			258			6,941
	Allowance related to loans collectively evaluated for impairment			8,918				5,015				945				989				1,032				34			390			17,323
	Balance at end of period		$	11,549				7,211				1,807				1,613				1,402				34			648			24,264
	Loans individually evaluated for impairment		$	37,064				17,221				1,956				6,527				1,298				17			580			64,663
	Loans collectively evaluated for impairment			376,550				504,376				33,476				25,378				70,400				117			17,716			1,028,013
	Total gross loans		$	413,614				521,597				35,432				31,905				71,698				134			18,296			1,092,676
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 December 31, 2014 and 2013:
		One- to Four-					Multi				Home Equity				Construction				Commercial				Consumer			Commercial			Total
		Family					Family								and Land				Real Estate
	At December 31, 2014	(In Thousands)
	Substandard		$	28,945				12,638				624				2,266				3,077				-			299			47,849
	Watch			10,779				7,070				278				1,377				2,186				-			840			22,530
	Pass			372,255				502,573				28,305				13,438				89,508				200			18,332			1,024,611
			$	411,979				522,281				29,207				17,081				94,771				200			19,471			1,094,990
	At December 31, 2013	(In Thousands)
	Substandard		$	37,060				14,809				2,169				6,576				1,298				17			580			62,509
	Watch			14,402				13,108				1,077				1,866				1,401				-			1,120			32,974
	Pass			362,152				493,680				32,186				23,463				68,999				117			16,596			997,193
			$	413,614				521,597				35,432				31,905				71,698				134			18,296			1,092,676
Impaired Loan Receivables	The following tables present data on impaired loans at December 31, 2014 and 2013.
			As of or for the Year Ended December 31, 2014
			Recorded				Unpaid				Reserve				Cumulative				Average				Interest Paid YTD
			Investment				Principal								Charge-Offs				Recorded
																			Investment
	Total Impaired with Reserve
	One- to four-family		$	11,864				13,345				2,386				1,481				15,982				515
	Multi family			7,438				10,285				731				2,847				12,720				177
	Home equity			144				144				63				-				195				7
	Construction and land			47				61				13				14				63				-
	Commercial real estate			2,984				3,544				526				560				4,211				128
	Consumer			-				-				-				-				-				-
	Commercial			7				7				7				-				12				1
			$	22,484				27,386				3,726				4,902				33,183				828
	Total Impaired with no Reserve
	One- to four-family		$	17,645				19,795				-				2,150				23,215				860
	Multi family			8,124				9,364				-				1,240				12,693				439
	Home equity			445				445				-				-				554				15
	Construction and land			2,219				2,332				-				113				3,379				97
	Commercial real estate			93				93				-				-				126				4
	Consumer			-				-				-				-				-				-
	Commercial			292				535				-				243				470				2
			$	28,818				32,564				-				3,746				40,437				1,417
	Total Impaired
	One- to four-family		$	29,509				33,140				2,386				3,631				39,197				1,375
	Multi family			15,562				19,649				731				4,087				25,413				616
	Home equity			589				589				63				-				749				22
	Construction and land			2,266				2,393				13				127				3,442				97
	Commercial real estate			3,077				3,637				526				560				4,337				132
	Consumer			-				-				-				-				-				-
	Commercial			299				542				7				243				482				3
			$	51,302				59,950				3,726				8,648				73,620				2,245
	The difference between a loan's recorded investment and the unpaid principal balance represents a partial charge-off resulting from a confirmed loss due to the value of the collateral securing the loan being below the loan balance and management's assessment that the full collection of the loan balance is not likely.
	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.
			As of or for the Year Ended December 31, 2013
			Recorded				Unpaid				Reserve				Cumulative				Average				Interest Paid YTD
			Investment				Principal								Charge-Offs				Recorded
																			Investment
	Total Impaired with Reserve
	One- to four-family		$	12,263				12,674				2,631				411				13,256				577
	Multi family			13,352				13,400				2,196				48				14,047				660
	Home equity			1,427				1,427				862				-				1,536				59
	Construction and land			3,087				3,087				624				-				3,092				93
	Commercial real estate			839				1,324				370				485				1,339				35
	Consumer			-				-				-				-				-				-
	Commercial			569				569				258				-				570				1
			$	31,537				32,481				6,941				944				33,840				1,425
	Total Impaired with no Reserve
	One- to four-family		$	24,801				30,519				-				5,718				30,629				1,080
	Multi family			3,869				4,902				-				1,033				5,431				114
	Home equity			529				529				-				-				533				12
	Construction and land			3,440				6,133				-				2,693				6,135				62
	Commercial real estate			459				523				-				64				524				27
	Consumer			17				17				-				-				19				1
	Commercial			11				11				-				-				11				1
			$	33,126				42,634				-				9,508				43,282				1,297
	Total Impaired
	One- to four-family		$	37,064				43,193				2,631				6,129				43,885				1,657
	Multi family			17,221				18,302				2,196				1,081				19,478				774
	Home equity			1,956				1,956				862				-				2,069				71
	Construction and land			6,527				9,220				624				2,693				9,227				155
	Commercial real estate			1,298				1,847				370				549				1,863				62
	Consumer			17				17				-				-				19				1
	Commercial			580				580				258				-				581				2
		$	64,663				75,115				6,941				10,452				77,122				2,722
Troubled Debt Restructurings on Loan Receivables	The following presents data on troubled debt restructurings:
		As of December 31, 2014
		Accruing									Non-accruing								Total
		Amount					Number				Amount				Number				Amount				Number
		(dollars in thousands)
	One- to four-family		$	4,724				8			$	10,233				55			$	14,957				63
	Multi family			2,923				2				4,797				7				7,720				9
	Home equity			-				-				98				1				98				1
	Construction and land			1,866				2				-				-				1,866				2
	Commercial real estate			1,306				1				170				1				1,476				2
			$	10,819				13			$	15,298				64			$	26,117				77
		As of December 31, 2013
		Accruing									Non-accruing								Total
		Amount					Number				Amount				Number				Amount				Number
		(dollars in thousands)
	One- to four-family		$	6,218				13			$	11,875				70			$	18,093				83
	Multi family			2,710				1				5,314				4				8,024				5
	Home equity			-				-				972				3				972				3
	Construction and land			1,408				1				833				2				2,241				3
	Commercial real estate			-				-				257				2				257				2
			$	10,336				15			$	19,251				81			$	29,587				96
Schedule of Troubled Debt Restructurings by Concession Type	The following presents troubled debt restructurings by concession type at December 31, 2014 and 2013:
		As of December 31, 2014
		Performing in								In Default								Total
		accordance with
		modified terms
		Amount				Number				Amount				Number				Amount				Number
		(dollars in thousands)
	Interest reduction and principal forbearance		$	15,306				36				2,014				7				17,320				43
	Principal forbearance			490				3				2,632				1				3,122				4
	Interest reduction			4,875				11				800				19				5,675				30
			$	20,671				50				5,446				27				26,117				77
		As of December 31, 2013
		Performing in								In Default								Total
		accordance with
		modified terms
		Amount				Number				Amount				Number				Amount				Number
		(dollars in thousands)
	Interest reduction and principal  forbearance		$	15,160				37				3,638				19				18,798				56
	Principal forbearance			5,240				5				-				-				5,240				5
	Interest reduction			3,317				11				2,232				24				5,549				35
			$	23,717				53				5,870				43				29,587				96
Schedule of Data on Troubled Debt Restructurings	The following presents data on troubled debt restructurings:
		For the Year Ended
		31-Dec-14								31-Dec-13
		Amount				Number				Amount				Number
		(dollars in thousands)								(dollars in thousands)
	Loans modified as a troubled debt restructure
	One- to four-family		$	2,939				14				1,682				9
	Multi family			1,337				5				-				-
	Home equity			98				1				37				1
	Commercial real estate			1,306				1				-				-
			$	5,680				21				1,719				10
	There were no troubled debt restructurings within the past twelve months for which there was a default during the year ended December 31, 2014 or December 31, 2013.
Schedule of Loans Receivables, Non Accrual Status	The following table presents data on non-accrual loans:
			As of December 31,
			2014				2013
			(Dollars in Thousands)
	Residential
	One- to four-family		$	23,918				30,207
	Multi family			12,001				13,498
	Home equity			445				1,585
	Construction and land			401				4,195
	Commercial real estate			947				938
	Commercial			299				521
	Consumer			-				17
	Total non-accrual loans		$	38,011				50,961
	Total non-accrual loans to total loans			3.47	%			4.66	%
	Total non-accrual loans to total assets			2.13	%			2.62	%

Office_Properties_and_Equipmen1

Office Properties and Equipment (Tables)	12 Months Ended
	Dec. 31, 2014
Office Properties and Equipment [Abstract]
Schedule of office properties and equipment	Office properties and equipment are summarized as follows:
		December 31,
		2014			2013
		(In Thousands)
	Land	$	6,442			6,444
	Office buildings and improvements		28,085			27,634
	Furniture and equipment		16,339			15,195
			50,866			49,273
	Less accumulated depreciation		(25,304	)		(22,183	)
		$	25,562			27,090
Minimum annual commitments under all non-cancelable lease agreements	The Company and certain subsidiaries are obligated under non-cancelable operating leases for other facilities and equipment.  Rent and equipment lease expense totaled $4.5 million, $3.3 million and $2.8 million for the years ended December 31, 2014, 2013 and 2012, respectively.  The appropriate minimum annual commitments under all non-cancelable lease agreements as of December 31, 2014 are as follows:
		Operating
		leases
		(In Thousands)
	Within one year	$	2,349
	One to two years		1,764
	Two to three years		1,482
	Three to four years		1,200
	Four through five years		755
	After five years		2,901
	Total	$	10,451

Real_Estate_Owned_Tables

Real Estate Owned (Tables)	12 Months Ended
	Dec. 31, 2014
Real Estate Owned [Abstract]
Summary of real estate owned	Real estate owned is summarized as follows:
		December 31,
		2014				2013
		(In Thousands)
	One- to four-family		$	10,796			12,980
	Multi-family			2,210			3,040
	Construction and land			5,400			6,258
	Commercial real estate			300			385
			$	18,706			22,663
	The following table presents the activity in real estate owned:
			Year Ended December 31,
			2014			2013
			(In Thousands)
	Real estate owned at beginning of period		$	22,663			35,974
	Transferred in from loans receivable			16,645			13,552
	Sales			(19,057	)		(25,734	)
	Write downs			(1,523	)		(1,382	)
	Other activity			(22	)		253
	Real estate owned at end of period		$	18,706			22,663

Mortgage_Servicing_Rights_Tabl

Mortgage Servicing Rights (Tables)	12 Months Ended
	Dec. 31, 2014
Mortgage Servicing Rights [Abstract]
Mortgage Servicing Rights Activity	The following table presents the activity related to the Company's mortgage servicing rights:
			Year ended December 31,
			2014			2013
			(In Thousands)
	Mortgage servicing rights at beginning of the period		$	3,377		$	3,220
	Additions			4,181			4,077
	Amortization			(435	)		(1,125	)
	Sales			(4,602	)		(2,795	)
	Mortgage servicing rights at end of the period			2,521			3,377
	Valuation allowance at end of period			(10	)		-
	Mortgage servicing rights at the end of the period, net		$	2,511		$	3,377
	During the twelve months ended December 31, 2014, $1.7 billion in residential loans were originated for sale. During the same period, sales of loans held for sale totaled $1.6 billion, generating mortgage banking income of $78.0 million. The unpaid principal balance of loans serviced for others was $308.1 million and $563.7 million at December 31, 2014 and December 31, 2013 respectively. These loans are not reflected in the consolidated statements of financial condition.
	During the twelve months ended December 31, 2014, the Company sold mortgage servicing rights related to $713.0 million in loans receivable and with a book value of $4.6 million for $7.1 million resulting in a gain on sale of $2.5 million. During the twelve months ended December 31, 2013, the Company sold mortgage servicing rights related to $541.6 million in loans receivable and with a book value of $2.8 million for $5.4 million resulting in a gain on sale of $2.6 million.
Estimated Amortization Expense of Mortgage Servicing Rights	The following table shows the estimated future amortization expense for mortgage servicing rights at December 31, 2014 for the periods indicated:
				(In Thousands)
	Estimate for the years ended December 31:	2015		$	406
	2016				367
	2017				330
	2018				294
	2019				184
	Thereafter				930
	Total			$	2,511

Deposits_Tables

Deposits (Tables)	12 Months Ended
	Dec. 31, 2014
Deposits [Abstract]
Summary of interest expense on deposits	A summary of interest expense on deposits is as follows:
		Years ended December 31,
		2014			2013		2012
		(In Thousands)
	Interest-bearing demand deposits		$	16		13		23
	Money market and savings deposits			113		132		272
	Time deposits			4,797		5,070		9,182
			$	4,926		5,215		9,477
Contractual maturities of time deposits	A summary of the contractual maturities of time deposits at December 31, 2014 is as follows:
			(In Thousands)
	Within one year		$	417,484
	One to two years			195,873
	Two to three years			27,339
	Three to four years			9,463
	Four through five years			2,476
			$	652,635

Borrowings_Tables

Borrowings (Tables)	12 Months Ended
	Dec. 31, 2014
Borrowings [Abstract]
Borrowings	Borrowings consist of the following:
		31-Dec-14					31-Dec-13
		Balance		Weighted			Balance		Weighted
				Average					Average
				Rate					Rate
		(In Thousands)
	Short-term repurchase agreements	$	-		0	%		21,197		3.19	%
	Federal Home Loan Bank advances maturing:
	2016		220,000		4.34	%		220,000		4.34	%
	2017		65,000		3.19	%		65,000		3.19	%
	2018		65,000		2.97	%		65,000		2.97	%
	Repurchase agreements maturing:
	2017		84,000		3.96	%		84,000		3.96	%
		$	434,000		3.89	%		455,197		3.86	%

Regulatory_Capital_Tables

Regulatory Capital (Tables)	12 Months Ended
	Dec. 31, 2014
Regulatory Capital [Abstract]
Actual and required capital amounts and ratios	The actual and required capital amounts and ratios for the Bank as of December 31, 2014 and 2013 are presented in the table below:
		31-Dec-14
		Actual						For Capital					To Be Well-Capitalized
								Adequacy Purposes					Under Prompt Corrective
													Action Provisions
		Amount			Ratio			Amount		Ratio			Amount			Ratio
		(Dollars In Thousands)
	WaterStone Bank
	Total capital (to risk-weighted assets)		$	357,514		31.98	%		89,428		8	%		111,785			10	%
	Tier I capital (to risk-weighted assets)			343,483		30.73	%		44,714		4	%		67,071			6	%
	Tier I capital (to average assets)			343,483		19.04	%		72,175		4	%		90,219			5	%
	State of Wisconsin (to total assets)			343,483		19.33	%		106,643		6	%		N/	A		N/	A
		31-Dec-13
	WaterStone Bank
	Total capital (to risk-weighted assets)		$	219,146		21.67	%		80,887		8	%		101,109			10	%
	Tier I capital (to risk-weighted assets)			206,364		20.41	%		40,443		4	%		60,665			6	%
	Tier I capital (to average assets)			206,364		12.48	%		66,161		4	%		82,701			5	%
	State of Wisconsin (to total assets)			206,364		10.65	%		116,252		6	%		N/	A		N/	A

Stock_Based_Compensation_Table

Stock Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2014
Stock Based Compensation [Abstract]
Estimated fair value of options granted	Assumptions are used in estimating the fair value of stock options granted.  The weighted average expected life of the stock options represent the period of time that the options are expected to be outstanding and is based on the SEC simplified approach to calculating expected term.  The risk-free interest rate is based on the U.S. Treasury yield curve in effect at the time of grant.  The expected volatility is based on the actual volatility of Waterstone Financial, Inc. stock from the original date of issue, October 4, 2005.  The following assumptions were used in estimating the fair value of options granted in the year ended 2012.  There were no options granted during the years ended December 31, 2014 or 2013.
		2012
	Dividend Yield		0	%
	Risk-free interest rate		0.25	%
	Expected volatility		74.53	%
	Weighted average expected life	6.5 years
	Weighted average per share value of options	$	1.25
Stock option activity	A summary of the Company's stock option activity for the years ended December 31, 2014, 2013 and 2012 is presented below.
	Stock Options	Shares			Weighted Average		Weighted Average		Aggregate
					Exercise Price		Years Remaining in		Intrinsic Value
							Contractual Term		(000's)
	Outstanding December 31, 2011		869,610		$	14.88		5.37		-
	Options exercisable at December 31, 2011		657,282			15.75		5.12		-
	Granted		279,811			1.85				-
	Exercised		(3,291	)		4.24				9
	Forfeited		(26,335	)		8.14				(72	)
	Outstanding December 31, 2012		1,119,795			11.95		5.69		1,622
	Options exercisable at December 31, 2012		816,939			15.12		4.31		80
	Granted		-			-				-
	Exercised		(1,097	)		1.72				(9	)
	Forfeited		(19,751	)		4.63				(112	)
	Outstanding December 31, 2013		1,098,947			12.11		4.18		2,744
	Options exercisable at December 31, 2013		870,707			14.23		3.28		636
	Granted		-			-				-
	Exercised		(31,624	)		1.73				361
	Forfeited		(96,576	)		13.33				(18	)
	Outstanding December 31, 2014		970,747			12.33		3.32		797
	Options exercisable at December 31, 2014		824,803			14.16		2.67		(829	)
Summary of nonvested stock option activity	The following table summarizes information about the Company's nonvested stock option activity for the years ended December 31, 2014 and 2013:
	Stock Options	Shares			Weighted Average
					Grant Date Fair Value
	Nonvested at December 31, 2012		302,854		$	1.35
	Granted		-			-
	Vested		(62,546	)		1.41
	Forfeited		(12,070	)		1.36
	Nonvested at December 31, 2013		228,238			1.33
	Nonvested at December 31, 2013		228,238		$	1.33
	Granted		-			-
	Vested		(62,543	)		1.41
	Forfeited		(19,751	)		1.14
	Nonvested at December 31, 2014		145,944			1.32
Summary of restricted stock shares activity	The following table summarizes information about the Company's restricted stock shares activity for the years ended December 31, 2014 and 2013:
	Restricted Stock	Shares			Weighted Average
					Grant Date Fair Value
	Nonvested at December 31, 2012		110,827		$	1.79
	Granted		-			-
	Vested		(23,043	)		2.09
	Forfeited		-			-
	Nonvested at December 31, 2013		87,784			1.72
	Nonvested at December 31, 2013		87,784			1.72
	Granted		-			-
	Vested		(21,945	)		1.73
	Forfeited		(16,459	)		1.73
	Nonvested at December 31, 2014		49,380			1.73

Employee_Stock_Ownership_Plan_

Employee Stock Ownership Plan (Tables)	12 Months Ended
	Dec. 31, 2014
Employee Stock Ownership Plan [Abstract]
Employee Stock Ownership Plan	The aggregate activity in the number of unearned ESOP shares, considering the allocation of those shares committed to be released as of December 31, is as follows:
		2014			2013
	Beginning ESOP shares		83,561			167,122
	Shares purchased under 2014 plan		2,024,000			-
	Shares committed to be released		(105,378	)		(83,561	)
	Unreleased shares		2,002,183			83,561
	Fair value of unreleased shares (2014 in millions, 2013 in thousands)	$	26,200.00			845

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2014
Income Taxes [Abstract]
Provision (benefit) for income taxes	The provision (benefit) for income taxes for the year ended December 31, 2014, 2013 and 2012 consists of the following:
		Years ended December 31,
		2014			2013			2012
		(In Thousands)
	Current:
	Federal	$	3,158			2,842			4,256
	State		301			385			435
			3,459			3,227			4,691
	Deferred:
	Federal		2,578			3,861			(12,664	)
	State		1,138			1,533			(4,231	)
			3,716			5,394			(16,895	)
	Total	$	7,175			8,621			(12,204	)
Differential income tax provisions computed at the Federal statutory corporate tax rate	The income tax provisions differ from that computed at the Federal statutory corporate tax rate for the years ended December 31, 2014, 2013 and 2012 as follows:
		Years ended December 31,
		2014			2013			2012
		(Dollars In Thousands)
	Income before income taxes	$	19,907			23,329			22,710
	Tax at Federal statutory rate (35%)		6,967			8,165			7,949
	Add (deduct) effect of:
	State income taxes net of Federal income tax benefit (expense)		936			1,246			(2,467	)
	Cash surrender value of life insurance		(451	)		(376	)		(375	)
	Non-deductible ESOP and stock option expense		39			(62	)		103
	Tax-exempt interest income		(514	)		(392	)		(185	)
	Reversal of federal valuation allowance on deferred taxes		-			-			(17,008	)
	Increase in tax exposure reserve		-			-			(184	)
	Other		198			40			(37	)
	Income tax provision (benefit)		7,175			8,621			(12,204	)
	Effective tax rate		36	%		37	%		(53.7	%)
Components of net deferred tax assets (liabilities) included in prepaid expenses and other assets	The significant components of the Company's net deferred tax assets (liabilities) included in prepaid expenses and other assets are as follows at December 31, 2014 and 2013:
		December 31,
		2014			2013
	Gross deferred tax assets:	(In Thousands)
	Fixed Assets	$	290			46
	Compensation agreements		149			210
	Restricted stock and stock options		911			991
	Allowance for loan losses		7,272			9,523
	Repurchase reserve for loans sold		145			122
	Real estate owned		1,001			2,401
	Nonaccrual interest		1,371			1,390
	Capital loss carryforward		465			467
	State NOL carryforward		230			508
	Unrealized loss on impaired securities		45			-
	Unrealized loss on securities available for sale, net		-			598
	Other		87			291
	Total gross deferred tax assets		11,966			16,547
	Gross deferred tax liabilities:
	Unrealized gain on securities available for sale, net		(1,130	)		-
	Mortgage servicing rights		(1,019	)		(1,365	)
	FHLB stock		(729	)		(736	)
	Deferred loan fees		(708	)		(622	)
	Deferred liabilities		(3,586	)		(2,723	)
	Net deferred tax assets	$	8,380			13,824
Reconciliation of the beginning and ending amount of unrecognized tax benefits	A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:
		2014			2013
		(In Thousands)
	Balance at January 1	$	-			71
	Increases related to prior year tax positions		-			-
	Increases related to current year tax positions		-			-
	Decreases related to prior year tax positions		-			(71	)
	Balance at December 31	$	-			-

Offsetting_of_Assets_and_Liabi1

Offsetting of Assets and Liabilities (Tables)	12 Months Ended
	Dec. 31, 2014
Offsetting of Assets and Liabilities [Abstract]
Repurchase liabilities [Table Text Block]	The following table presents the liabilities subject to an enforceable master netting agreement as of December 31, 2014 and December 31, 2013.
		Gross Recognized Liabililities		Gross Amounts Offset		Net Amounts Presented		Gross Amounts Not Offset		Net Amount
		(In thousands)
	31-Dec-14
	Repurchase Agreements
	Short-term	$	-		-		-		-		-
	Long-term		84,000		-		84,000		84,000		-
		$	84,000		-		84,000		84,000		-
	31-Dec-13
	Repurchase Agreements
	Short-term	$	17,526		-		17,526		17,526		-
	Long-term		84,000		-		84,000		84,000		-
		$	101,526		-		101,526		101,526		-

Financial_Instruments_with_Off1

Financial Instruments with Off-Balance Sheet Risk (Tables)	12 Months Ended
	Dec. 31, 2014
Financial Instruments with Off Balance Sheet Risk [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 balance sheets. The contract or notional amounts of those instruments reflect the extent of involvement the Company has in particular classes of financial instruments.
		December 31,
		2014			2013
		(In Thousands)
	Financial instruments whose contract amounts represent potential credit risk:
	Commitments to extend credit under first mortgage loans(1)		$	18,889		9,637
	Commitments to extend credit under home equity lines of credit			14,775		14,699
	Unused portion of construction loans			12,333		8,637
	Unused portion of business lines of credit			11,599		10,364
	Standby letters of credit			766		696
	(1) Excludes commitments to originate loans held for sale, which are discussed in the following footnote

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2014
Fair Value Measurements [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured On Recurring Basis [Table Text Block]	The following table presents information about our assets recorded in our consolidated statement of financial position at their fair value on a recurring basis as of December 31, 2014 and December 31, 2013, and indicates the fair value hierarchy of the valuation techniques utilized to determine such fair value.
						Fair Value Measurements Using
		31-Dec-14				Level 1				Level 2				Level 3
		(In Thousands)
	Available for sale securities
	Mortgage-backed securities		$	117,128				-				117,128				-
	Collateralized mortgage obligations
	Government sponsored enterprise issued			59,071				-				59,071				-
	Government sponsored enterprise bonds			6,711				-				6,711				-
	Municipal securities			77,108				-				77,108				-
	Other debt securities			7,528				2,550				4,978				-
	Certificates of deposit			5,897				-				5,897				-
	Loans held for sale			125,073				-				125,073				-
	Mortgage banking derivative assets			1,644				-				-				1,644
	Mortgage banking derivative liabilities			645				-				-				645
						Fair Value Measurements Using
		31-Dec-13				Level 1				Level 2				Level 3
		(In Thousands)
	Available for sale securities
	Mortgage-backed securities		$	104,923				-				104,923				-
	Collateralized mortgage obligations
	Government sponsored enterprise issued			19,241				-				19,241				-
	Government sponsored enterprise bonds			17,934				-				17,934				-
	Municipal securities			58,793				-				58,793				-
	Other debt securities			5,160				5,160				-				-
	Certificates of deposit			7,367				-				7,367				-
	Loans held for sale			97,021				-				97,021				-
	Mortgage banking derivative assets			1,189				-				-				1,189
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]	The table below presents reconciliation for all assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) during 2014 and 2013.
			Mortgage banking
			derivatives, net
	Balance at December 31, 2012		$	1,419
	Transfer into level 3			-
	Mortgage derivative gain, net			(230	)
	Balance at December 31, 2013			1,189
	Transfer into level 3			-
	Mortgage derivative gain, net			(190	)
	Balance at December 31, 2014		$	999
Fair Value Measurements, Nonrecurring [Table Text Block]	The following table presents information about our assets recorded in our consolidated statement of financial position at their fair value on a non-recurring basis as of December 31, 2014 and December 31, 2013, and indicates the fair value hierarchy of the valuation techniques utilized to determine such fair value.
						Fair Value Measurements Using
		31-Dec-14				Level 1				Level 2				Level 3
		(In Thousands)
	Impaired loans, net (1)		$	18,758				-				-				18,758
	Real estate owned			18,706				-				-				18,706
	Mortgage servicing rights			9				-				-				9
						Fair Value Measurements Using
		31-Dec-13				Level 1				Level 2				Level 3
		(In Thousands)
	Impaired loans, net (1)		$	24,596				-				-				24,596
	Real estate owned			22,663				-				-				22,663
	_________
	(1) Represents collateral-dependent impaired loans, net, which are included in loans.
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Table Text Block]	For Level 3 assets and liabilities measured at fair value on a recurring or non-recurring basis as of December 31, 2014, the significant unobservable inputs used in the fair value measurements were as follows:
			Fair Value at				Significant		Significant Unobservable Input Value
			31-Dec-14			Valuation	Unobservable		Minimum				Maximum
						Technique	Inputs		Value				Value
	Mortgage banking derivatives		$	999		Pricing models	Pull through rate			53.1	%			100	%
	Impaired loans			18,758		Market approach	Disount rates applied to appraisals			15	%			30	%
	Real estate owned			18,706		Market approach	Disount rates applied to appraisals			0	%			89.4	%
	Mortgage servicing rights			9		Pricing models	Prepayment rate			7	%			36.3	%
							Discount rate			10	%			11	%
							Cost to service		$	71.75			$	828.26
	___________
Fair Value, by Balance Sheet Grouping [Table Text Block]	The carrying amounts and fair values of the Company's financial instruments consist of the following at December 31, 2014 and December 31, 2013:
			31-Dec-14																31-Dec-13
			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		$	172,820				172,820				167,370				5,450		-		429,169		429,169		429,169		-		-
	Securities available-for-sale			273,443				273,443				2,550				270,893		-		213,418		213,418		5,160		208,258		-
	Loans held for sale			125,073				125,073				-				125,073		-		97,021		97,021		-		97,021		-
	Loans receivable			1,094,990				1,184,398				-				-		1,184,398		1,092,676		1,117,959		-		-		1,117,959
	FHLB stock			17,500				17,500				-				17,500		-		17,500		17,500		-		17,500		-
	Accrued interest receivable			4,029				4,029				4,029				-		-		3,804		3,804		3,804		-		-
	Mortgage servicing rights			2,511				2,808				-				-		2,808		3,377		5,829		-		-		5,829
	Mortgage banking derivative assets			1,644				1,644				-				-		1,644		1,189		1,189		-		-		1,189
	Financial Liabilities
	Deposits			863,960				866,173				211,325				654,848		-		1,244,741		1,246,541		606,991		639,550		-
	Advance payments by borrowers for taxes			4,991				4,991				4,991				-		-		2,482		2,482		2,482		-		-
	Borrowings			434,000				459,484				-				459,484		-		455,197		491,053		21,197		469,856		-
	Accrued interest payable			1,600				1,600				1,600				-		-		1,595		1,595		1,595		-		-
	Mortgage banking derivative liabilities			645				645				-				-		645		-		-		-		-		-

Earnings_loss_per_share_Tables

Earnings (loss) per share (Tables)	12 Months Ended
	Dec. 31, 2014
Earnings (Loss) Per Share [Abstract]
Calculations for basic and diluted earnings loss 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, excluding outstanding participating securities.  Participating securities include unvested restricted shares.  Unvested restricted shares are considered participating securities because holders of these securities have the right to receive dividends at the same rate as holders of the Company's common stock.  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.  Unvested restricted stock and stock options are considered outstanding for diluted earnings per share only.
		For the year ended December 31,
		2014		2013		2012
		(In Thousands, except per share amounts)
	Net income		12,732		14,708		34,914
	Net income available to unvested restricted stockholders		19		38		113
	Net income available to common stockholders	$	12,713		14,670		34,801
	Weighted average shares outstanding		33,406		34,185		34,076
	Effect of dilutive potential common shares		237		254		118
	Diluted weighted average shares outstanding		33,643		34,439		34,194
	Basic income per share	$	0.38		0.43		1.02
	Diluted income per share	$	0.38		0.43		1.02

Condensed_Parent_Company_Only_1

Condensed Parent Company Only Statements (Tables)	12 Months Ended
	Dec. 31, 2014
Condensed Parent Company Only Statements [Abstract]
Statements of Financial Condition	Statements of Financial Condition
		December 31,
		2014			2013
		(In Thousands)
	Assets
	Cash and cash equivalents	$	101,637			349
	Securities available for sale (at fair value)		2,550			5,160
	Investment in subsidiaries		345,234			205,776
	Other assets		2,596			3,276
	Total Assets	$	452,017			214,561
	Liabilities and shareholders' equity
	Liabilities:
	Other liabilities		1,780			89
	Shareholders' equity
	Preferred Stock (par value $.01 per share), Authorized - 50,000,000 shares in 2014 and 20,000,000 in 2013, no shares issued		-			-
	Common stock (par value $.01 per share), Authorized - 100,000,000 shares in 2014 and 200,000,000 in 2013, Issued - 34,420,094 in 2014 and 34,073,670 in 2013, Outstanding -  34,420,094 in 2014 and 31,349,317 in 2013		344			341
	Additional paid-in-capital		313,894			110,480
	Retained earnings		157,304			151,195
	Unearned ESOP shares		(22,552	)		(854	)
	Treasury stock (0 in 2014 and 2,724,353 in 2013), at cost		-			(45,261	)
	Accumulated other comprehensive (loss) income (net of taxes)		1,247			(1,429	)
	Total shareholders' equity		450,237			214,472
	Total liabilities and shareholders' equity	$	452,017			214,561
Statements of Operations	Statements of Operations
		For the year ended December 31,
		2014			2013			2012
		(In Thousands)
	Interest income	$	1,078			586			644
	Equity in income of subsidiaries		12,431			14,468			33,448
	Total income		13,509			15,054			34,092
	Compensation		52			(118	)		(523	)
	Professional fees		2			16			3
	Other expense		370			287			279
	Total expense (income)		424			185			(241	)
	Income before income tax expense		13,085			14,869			34,333
	Income tax expense (benefit)		353			161			(581	)
	Net income	$	12,732			14,708			34,914
Statements of Cash Flows	Statements of Cash Flows
		For the year ended December 31,
		2014			2013			2012
		(In Thousands)
	Cash flows from operating activities
	Net income	$	12,732			14,708			34,914
	Adjustments to reconcile net income to net cash provided by (used in) operating activities:
	Amortization of unearned ESOP		1,217			718			306
	Stock based compensation		109			126			145
	Deferred income taxes		80			(21	)		(954	)
	Equity in (earnings) loss of subsidiaries		(12,431	)		(14,468	)		(33,448	)
	Change in other assets and liabilities		599			(1,051	)		(1,147	)
	Net cash provided by (used in) operating activities		2,306			12			(184	)
	Cash flows used in investing activities:
	Capital contributions to subsidiary		(124,211	)		-			-
	Call of debt securities		2,609			-			-
	Net cash used in investing activities		(121,602	)		-			-
	Cash dividends on Common Stock		(5,003	)		-			-
	Financing for purchase of ESOP shares		(22,884	)		-			-
	Proceeds from stock option exercises		49			-			-
	Proceeds/refunds from stock offering		248,422			-			-
	Net cash provided by financing activities		220,584			-			-
	Net increase (decrease) in cash		101,288			12			(184	)
	Cash and cash equivalents at beginning of year		349			337			521
	Cash and cash equivalents at end of year	$	101,637			349			337

Segment_and_Related_Informatio1

Segment and Related Information (Tables)	12 Months Ended
	Dec. 31, 2014
Segments and Related Information [Abstract]
Schedule of segment reporting information, by segment
		As of or for the Year ended December 31, 2014
		Community			Mortgage		Holding			Consolidated
		Banking			Banking		Company and
							Other
		(in thousands)
	Net interest income	$	39,591			1,051		665			41,307
	Provision for loan losses		750			400		-			1,150
	Net interest income after provision for loan losses		38,841			651		665			40,157
	Noninterest income		3,264			81,710		(406	)		84,568
	Noninterest expenses:
	Compensation, payroll taxes, and other employee benefits		14,915			54,626		(369	)		69,172
	Occupancy, office furniture, and equipment		3,350			7,019		-			10,369
	FDIC insurance premiums		1,395			-		-			1,395
	Real estate owned		2,473			9		-			2,482
	Other		4,819			16,616		(35	)		21,400
	Total noninterest expenses		26,952			78,270		(404	)		104,818
	Income before income taxes		15,153			4,091		663			19,907
	Income taxes		5,173			1,649		353			7,175
	Net income	$	9,980			2,442		310			12,732
	Total Assets	$	1,758,707			145,980		(121,307	)		1,783,380
		As of or for the Year ended December 31, 2013
		Community			Mortgage		Holding			Consolidated
		Banking			Banking		Company and
							Other
		(in thousands)
	Net interest income	$	38,148			557		501			39,206
	Provision for loan losses		4,472			60		-			4,532
	Net interest income after provision for loan losses		33,676			497		501			34,674
	Noninterest income		3,134			84,879		(214	)		87,799
	Noninterest expenses:
	Compensation, payroll taxes, and other employee benefits		13,526			55,484		(203	)		68,807
	Occupancy, office furniture and equipment		3,052			5,194		(81	)		8,165
	FDIC insurance premiums		1,986			-		-			1,986
	Real estate owned		255			-		-			255
	Other		4,197			15,565		169			19,931
	Total noninterest expenses		23,016			76,243		(115	)		99,144
	Income before income taxes		13,794			9,133		402			23,329
	Income taxes		4,777			3,682		162			8,621
	Net income	$	9,017			5,451		240			14,708
	Total Assets	$	1,895,833			119,401		(68,195	)		1,947,039
		As of or for the Year ended December 31, 2012
		Community			Mortgage		Holding			Consolidated
		Banking			Banking		Company and
							Other
		(in thousands)
	Net interest income	$	40,973			470		502			41,945
	Provision for loan losses		8,250			50		-			8,300
	Net interest income after provision for loan losses		32,723			420		502			33,645
	Noninterest income		3,259			87,944		-			91,203
	Noninterest expenses:
	Compensation, payroll taxes, and other employee benefits		13,424			50,748		(665	)		63,507
	Occupancy, office furniture and equipment		3,112			3,856		-			6,968
	FDIC insurance premiums		3,390			-		-			3,390
	Real estate owned		8,746			-		-			8,746
	Other		4,728			14,517		282			19,527
	Total noninterest expenses		33,400			69,121		(383	)		102,138
	Income before income taxes (benefit)		2,582			19,243		885			22,710
	Income taxes (benefit)		(19,347	)		7,724		(581	)		(12,204	)
	Net income	$	21,929			11,519		1,466			34,914
	Total Assets	$	1,589,314			147,699		(75,937	)		1,661,076

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
	Segment
Organization [Abstract]
Common shares outstanding (in hundredths)	0.00%
Nature of Operations [Abstract]
Number of operating segments (in segments)	2
Cash and Cash Equivalents [Abstract]
Federal funds and debt instruments maturity period (in months)	3 months
Loans Held for Sale [Abstract]
Mortgage loans selling period (in days)	45 days
Carrying value of loans held for sale	$5.90	$2.30
Percentage of costs expensed on appropriate noninterest expense (in hundredths)	69.80%
Income Taxes [Abstract]
Realized income tax benefit (in hundredths)	50.00%
Office properties [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives of office properties and equipment (in years)	P10Y
Office properties [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives of office properties and equipment (in years)	P30Y
Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives of office properties and equipment (in years)	P3Y
Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives of office properties and equipment (in years)	P10Y
Software [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives of office properties and equipment (in years)	P3Y

Securities_Part_I_Details

Securities, Part I (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	$270,562,000	$214,943,000
Gross unrealized gains	3,522,000	2,510,000
Gross unrealized losses	-641,000	-4,035,000
Fair value	273,443,000	213,418,000
Amortized cost of investment securities by contractual maturity [Abstract]
Due within one year	5,767,000
Due after one year through five years	24,274,000
Due after five years through ten years	40,505,000
Due after ten years	25,525,000
Mortgage-related securities	174,491,000
Amortized cost	270,562,000
Fair value of investment securities by contractual maturity [Abstract]
Due within one year	5,803,000
Due after one year through five years	24,549,000
Due after five years through ten years	40,487,000
Due after ten years	26,405,000
Mortgage-related securities	176,199,000
Fair value	273,443,000
Gross gains and losses from sales of investment securities available for sale [Abstract]
Gross gains	0	6,000	522,000
Gross losses	0	-15,000	0
Gains on sale of investment securities, net	0	-9,000	522,000
Proceeds from sales of investment securities	0	921,000	30,089,000
Fair value of securities available for sale in a continuous unrealized loss position [Abstract]
Less than 12 months	47,545,000	107,451,000
12 months or longer	36,803,000	10,057,000
Fair value	84,348,000	117,508,000
Unrealized loss on securities available for sale in a continuous unrealized loss position [Abstract]
Less than 12 months	-148,000	-3,366,000
12 months or longer	-493,000	-669,000
Unrealized loss	-641,000	-4,035,000
Mortgage-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	115,670,000	104,462,000
Gross unrealized gains	1,582,000	1,192,000
Gross unrealized losses	-124,000	-731,000
Fair value	117,128,000	104,923,000
Fair value of securities available for sale in a continuous unrealized loss position [Abstract]
Less than 12 months	10,537,000	45,094,000
12 months or longer	12,489,000	5,349,000
Fair value	23,026,000	50,443,000
Unrealized loss on securities available for sale in a continuous unrealized loss position [Abstract]
Less than 12 months	-13,000	-539,000
12 months or longer	-111,000	-192,000
Unrealized loss	-124,000	-731,000
Collateralized mortgage obligations, government sponsored enterprise issued [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	58,821,000	18,946,000
Gross unrealized gains	320,000	320,000
Gross unrealized losses	-70,000	-25,000
Fair value	59,071,000	19,241,000
Fair value of securities available for sale in a continuous unrealized loss position [Abstract]
Less than 12 months	23,131,000	5,669,000
12 months or longer	0	0
Fair value	23,131,000	5,669,000
Unrealized loss on securities available for sale in a continuous unrealized loss position [Abstract]
Less than 12 months	-70,000	-25,000
12 months or longer	0	0
Unrealized loss	-70,000	-25,000
Mortgage-related securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	174,491,000	123,408,000
Gross unrealized gains	1,902,000	1,512,000
Gross unrealized losses	-194,000	-756,000
Fair value	176,199,000	124,164,000
Securities pledged as collateral to secure repurchase agreements or related to mortgage banking activities	98,200,000
Government-sponsored enterprise bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	6,750,000	18,171,000
Gross unrealized gains	2,000	4,000
Gross unrealized losses	-41,000	-241,000
Fair value	6,711,000	17,934,000
Securities pledged as collateral to secure repurchase agreements or related to mortgage banking activities	0
Fair value of securities available for sale in a continuous unrealized loss position [Abstract]
Less than 12 months	2,739,000	15,530,000
12 months or longer	2,970,000	0
Fair value	5,709,000	15,530,000
Unrealized loss on securities available for sale in a continuous unrealized loss position [Abstract]
Less than 12 months	-11,000	-241,000
12 months or longer	-30,000	0
Unrealized loss	-41,000	-241,000
Municipal securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	76,037,000	61,014,000
Gross unrealized gains	1,442,000	802,000
Gross unrealized losses	-371,000	-3,023,000
Fair value	77,108,000	58,793,000
Securities pledged as collateral to secure repurchase agreements or related to mortgage banking activities	1,300,000
Fair value of securities available for sale in a continuous unrealized loss position [Abstract]
Less than 12 months	5,671,000	37,498,000
12 months or longer	21,344,000	4,708,000
Fair value	27,015,000	42,206,000
Unrealized loss on securities available for sale in a continuous unrealized loss position [Abstract]
Less than 12 months	-19,000	-2,546,000
12 months or longer	-352,000	-477,000
Unrealized loss	-371,000	-3,023,000
Other debt securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	7,404,000	5,000,000
Gross unrealized gains	159,000	160,000
Gross unrealized losses	-35,000	0
Fair value	7,528,000	5,160,000
Fair value of securities available for sale in a continuous unrealized loss position [Abstract]
Less than 12 months	4,977,000
12 months or longer	0
Fair value	4,977,000
Unrealized loss on securities available for sale in a continuous unrealized loss position [Abstract]
Less than 12 months	-35,000
12 months or longer	0
Unrealized loss	-35,000
Debt securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	90,191,000	84,185,000
Gross unrealized gains	1,603,000	966,000
Gross unrealized losses	-447,000	-3,264,000
Fair value	91,347,000	81,887,000
Certificates of Deposit [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	5,880,000	7,350,000
Gross unrealized gains	17,000	32,000
Gross unrealized losses	0	-15,000
Fair value	5,897,000	7,367,000
Fair value of securities available for sale in a continuous unrealized loss position [Abstract]
Less than 12 months	490,000	3,660,000
12 months or longer	0	0
Fair value	490,000	3,660,000
Unrealized loss on securities available for sale in a continuous unrealized loss position [Abstract]
Less than 12 months	0	-15,000
12 months or longer	0	0
Unrealized loss	$0	($15,000)

Securities_Part_II_Details

Securities, Part II (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
	Security	Security
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Gain on sale	$0	($9,000)	$522,000
Amortized cost	270,562,000
Fair value	273,443,000
Other-than-temporary impairment charges recognized in other comprehensive loss [Roll Forward]
Credit related impairments on securities as of beginning of period	100,000	100,000
Credit related impairments related to securities for which an other-than-temporary impairment was not previously recognized	0	0
Reduction for sales of securities for which other-than-temporary impairment was previously recognized		0
Increase in credit related impairments related to securities for which an other-than-temporary impairment was previously recognized	17,000	0
Credit related impairments on securities as of end of period	117,000	100,000	100,000
Securities Held to Maturity [Abstract]
Number of securities held to maturity (in securities)	0	0
Securities held to maturity, at amortized cost	0	0
Debt security, other-than-temporarily Impaired 1 [Member]
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Analysis resulted in an estimate of approximately in credit losses
Collateralized mortgage obligations, private-label issued [Member]
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Number of securities for which a cash flow analysis was performed
Gain on sale
Amortized cost of securities for which a cash flow analysis was performed
Number of securities that were other-than-temporarily impaired
Municipal securities [Member]
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Number of securities that were other-than-temporarily impaired	2
Amortized cost	198,000
Fair value	117,000
Number of securities that were in unrealized loss position twelve months or longer (in securities)	53
Other-than-temporary impairment charges recognized in other comprehensive loss [Roll Forward]
Credit related impairments on securities as of end of period

Loans_Receivable_Part_I_Detail

Loans Receivable, Part I (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Mortgage Loans [Abstract]
Loans receivable	$1,094,990,000	$1,092,676,000
Percentage of total loans receivable secured by residential real estate (in hundredths)	88.00%
Mortgage loans receivable located outside the state of Wisconsin
Percentage of total mortgage loans located outside of the state of Wisconsin (in hundredths)
Loans receivable pledged as collateral	844,200,000	882,900,000
Advances by Federal Home Loan Bank	350,000,000	350,000,000
One-to Four-family [Member]
Mortgage Loans [Abstract]
Loans receivable	411,979,000	413,614,000
Over Four-Family [Member]
Mortgage Loans [Abstract]
Loans receivable	522,281,000	521,597,000
Home Equity [Member]
Mortgage Loans [Abstract]
Loans receivable	29,207,000	35,432,000
Construction and Land [Member]
Mortgage Loans [Abstract]
Loans receivable	17,081,000	31,905,000
Commercial Real Estate [Member]
Mortgage Loans [Abstract]
Loans receivable	94,771,000	71,698,000
Consumer [Member]
Mortgage Loans [Abstract]
Loans receivable	200,000	134,000
Commercial Loans [Member]
Mortgage Loans [Abstract]
Loans receivable	$19,471,000	$18,296,000

Loans_Receivable_Part_II_Detai

Loans Receivable, Part II (Details) (USD $)	Dec. 31, 2014		Dec. 31, 2013
Financing receivable, recorded investment, aging [Abstract]
1 to 59 Days Past Due	$4,846,000	[1]	$6,458,000	[1]
60 to 89 Days Past Due	4,176,000	[2]	6,773,000	[2]
Greater than 90 Days	25,112,000		30,780,000
Total Past Due	34,134,000		44,011,000
Current	1,060,856,000	[3]	1,048,665,000	[3]
Total Loans	1,094,990,000		1,092,676,000
Loan Receivable, 1 to 59 Days Past Due, Nonaccrual Status	1,600,000		1,100,000
Loan Receivable, 60 to 89 Days Past Due, Nonaccrual Status	795,000,000,000		5,700,000
Loan Receivable, Nonaccrual Status	10,500,000		12,900,000
90 or more days past due	0		0
One-to Four-family [Member]
Financing receivable, recorded investment, aging [Abstract]
1 to 59 Days Past Due	3,767,000	[1]	4,994,000	[1]
60 to 89 Days Past Due	3,743,000	[2]	5,236,000	[2]
Greater than 90 Days	12,196,000		17,499,000
Total Past Due	19,706,000		27,729,000
Current	392,273,000	[3]	385,885,000	[3]
Total Loans	411,979,000		413,614,000
Over Four-Family [Member]
Financing receivable, recorded investment, aging [Abstract]
1 to 59 Days Past Due	462,000	[1]	804,000	[1]
60 to 89 Days Past Due	280,000	[2]	1,293,000	[2]
Greater than 90 Days	11,092,000		7,743,000
Total Past Due	11,834,000		9,840,000
Current	510,447,000	[3]	511,757,000	[3]
Total Loans	522,281,000		521,597,000
Home Equity [Member]
Financing receivable, recorded investment, aging [Abstract]
1 to 59 Days Past Due	268,000	[1]	373,000	[1]
60 to 89 Days Past Due	153,000	[2]	205,000	[2]
Greater than 90 Days	250,000		465,000
Total Past Due	671,000		1,043,000
Current	28,536,000	[3]	34,389,000	[3]
Total Loans	29,207,000		35,432,000
Construction and Land [Member]
Financing receivable, recorded investment, aging [Abstract]
1 to 59 Days Past Due	90,000	[1]	0	[1]
60 to 89 Days Past Due	0	[2]	39,000	[2]
Greater than 90 Days	362,000		4,195,000
Total Past Due	452,000		4,234,000
Current	16,629,000	[3]	27,671,000	[3]
Total Loans	17,081,000		31,905,000
Commercial Real Estate [Member]
Financing receivable, recorded investment, aging [Abstract]
1 to 59 Days Past Due	225,000	[1]	287,000	[1]
60 to 89 Days Past Due	0	[2]	0	[2]
Greater than 90 Days	947,000		357,000
Total Past Due	1,172,000		644,000
Current	93,599,000	[3]	71,054,000	[3]
Total Loans	94,771,000		71,698,000
Consumer [Member]
Financing receivable, recorded investment, aging [Abstract]
1 to 59 Days Past Due	0	[1]	0	[1]
60 to 89 Days Past Due	0	[2]	0	[2]
Greater than 90 Days	0		0
Total Past Due	0		0
Current	200,000	[3]	134,000	[3]
Total Loans	200,000		134,000
Commercial Loans [Member]
Financing receivable, recorded investment, aging [Abstract]
1 to 59 Days Past Due	34,000	[1]	0	[1]
60 to 89 Days Past Due	0	[2]	0	[2]
Greater than 90 Days	265,000		521,000
Total Past Due	299,000		521,000
Current	19,172,000	[3]	17,775,000	[3]
Total Loans	$19,471,000		$18,296,000
[1]	Includes $1.6 million and $1.1 million for December 31, 2014 and 2013, respectively, which are on non-accrual status.
[2]	Includes $795,000 and $5.7 million for December 31, 2014 and 2013, respectively, which are on non-accrual status.
[3]	Includes $10.5 million and $12.9 million for December 31, 2014 and 2013, respectively, which are on non-accrual status.

Loans_Receivable_Part_III_Deta

Loans Receivable, Part III (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Allowance for loan losses [Roll Forward]
Balance at beginning of period	$24,264	$31,043	$32,430
Provision for loan losses	1,150	4,532	8,300
Charge-offs	-8,855	-12,624	-10,978
Recoveries	2,147	1,313	1,291
Balance at end of period	18,706	24,264	31,043
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	3,726	6,941
Allowance related to loans collectively evaluated for impairment	14,980	17,323
Loans individually evaluated for impairment	51,302	64,663
Loans collectively evaluated for impairment	1,043,688	1,028,013
Total loans	1,094,990	1,092,676
One-to Four-family [Member]
Allowance for loan losses [Roll Forward]
Balance at beginning of period	11,549	17,819	17,475
Provision for loan losses	-1,081	1,479	6,149
Charge-offs	-2,424	-8,706	-6,472
Recoveries	1,833	957	667
Balance at end of period	9,877	11,549	17,819
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	2,386	2,631
Allowance related to loans collectively evaluated for impairment	7,491	8,918
Loans individually evaluated for impairment	29,509	37,064
Loans collectively evaluated for impairment	382,470	376,550
Total loans	411,979	413,614
Over Four-Family [Member]
Allowance for loan losses [Roll Forward]
Balance at beginning of period	7,211	7,734	8,252
Provision for loan losses	3,205	859	534
Charge-offs	-5,247	-1,640	-1,108
Recoveries	189	258	56
Balance at end of period	5,358	7,211	7,734
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	731	2,196
Allowance related to loans collectively evaluated for impairment	4,627	5,015
Loans individually evaluated for impairment	15,562	17,221
Loans collectively evaluated for impairment	506,719	504,376
Total loans	522,281	521,597
Home Equity [Member]
Allowance for loan losses [Roll Forward]
Balance at beginning of period	1,807	2,097	1,998
Provision for loan losses	-1,208	305	559
Charge-offs	-191	-630	-485
Recoveries	14	35	25
Balance at end of period	422	1,807	2,097
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	63	862
Allowance related to loans collectively evaluated for impairment	359	945
Loans individually evaluated for impairment	589	1,956
Loans collectively evaluated for impairment	28,618	33,476
Total loans	29,207	35,432
Construction and Land [Member]
Allowance for loan losses [Roll Forward]
Balance at beginning of period	1,613	1,323	2,922
Provision for loan losses	-505	1,719	-181
Charge-offs	-496	-1,480	-1,668
Recoveries	75	51	250
Balance at end of period	687	1,613	1,323
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	13	624
Allowance related to loans collectively evaluated for impairment	674	989
Loans individually evaluated for impairment	2,266	6,527
Loans collectively evaluated for impairment	14,815	25,378
Total loans	17,081	31,905
Commercial Real Estate [Member]
Allowance for loan losses [Roll Forward]
Balance at beginning of period	1,402	1,259	941
Provision for loan losses	721	303	1,500
Charge-offs	-199	-160	-1,182
Recoveries	27	0	0
Balance at end of period	1,951	1,402	1,259
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	526	370
Allowance related to loans collectively evaluated for impairment	1,425	1,032
Loans individually evaluated for impairment	3,077	1,298
Loans collectively evaluated for impairment	91,694	70,400
Total loans	94,771	71,698
Consumer [Member]
Allowance for loan losses [Roll Forward]
Balance at beginning of period	34	30	28
Provision for loan losses	-27	-2	6
Charge-offs	-5	0	-4
Recoveries	6	6	0
Balance at end of period	8	34	30
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	8	34
Loans individually evaluated for impairment	0	17
Loans collectively evaluated for impairment	200	117
Total loans	200	134
Commercial Loans [Member]
Allowance for loan losses [Roll Forward]
Balance at beginning of period	648	781	814
Provision for loan losses	45	-131	-267
Charge-offs	-293	-8	-59
Recoveries	3	6	293
Balance at end of period	403	648	781
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	7	258
Allowance related to loans collectively evaluated for impairment	396	390
Loans individually evaluated for impairment	299	580
Loans collectively evaluated for impairment	19,172	17,716
Total loans	$19,471	$18,296

Loans_Receivable_Part_IV_Detai

Loans Receivable, Part IV (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Loans Receivable, Recorded Investment [Line Items]
Loans receivable, net	$1,094,990,000	$1,092,676,000
Loans requiring an officers' loans committee review and approval, minimum	500,000	500,000
Minimum amount of potential loan exposure to be reviewed by credit management personnel	1,000,000	1,000,000
Maximum period of time loan is reviewed if renewed (in years)	1 year	1 year
Impaired Loans Receivable, Recorded Investment [Abstract]
Total Impaired, with Reserve, Recorded Investment	22,484,000	31,537,000
Total Impaired, with no Reserve, Recorded Investment	28,818,000	33,126,000
Total Impaired, Recorded Investment	51,302,000	64,663,000
Impaired Loans Receivable, Unpaid Principal Balance [Abstract]
Total Impaired with Reserve, Unpaid Principal Balance	27,386,000	32,481,000
Total Impaired with no Reserve, Unpaid Principal Balance	32,564,000	42,634,000
Total Impaired, Unpaid Principal Balance, Total	59,950,000	75,115,000
Impaired Loans Receivable, Reserve [Abstract]
Total Impaired with Reserve, Reserve	3,726,000	6,941,000
Total Impaired with no Reserve, Reserve	0	0
Impaired Loans, Reserve	3,726,000	6,941,000
Impaired Loans Receivable, Cumulative Charge-Offs [Abstract]
Total Impaired with Reserve, Cumulative Charge-offs	4,902,000	944,000
Total Impaired with no Reserve, Cumulative Charge-offs	3,746,000	9,508,000
Total Impaired, Cumulative Charge-offs	8,648,000	10,452,000
Impaired Loans Receivable, Average Recorded Investment [Abstract]
Total Impaired with Reserve, Average Recorded Investment	33,183,000	33,840,000
Total Impaired with no Reserve, Average Recorded Investment	40,437,000	43,282,000
Total Impaired, Average Recorded Investment, Total	73,620,000	77,122,000
Impaired Loans Receivable, Interest Paid YTD [Abstract]
Total Impaired with Reserve, Interest Paid YTD	828,000	1,425,000
Total Impaired with no Reserve, Interest Paid YTD	1,417,000	1,297,000
Total Impaired, Interest Paid YTD	2,245,000	2,722,000
One-to Four-Family [Member]
Loans Receivable, Recorded Investment [Line Items]
Loans receivable, net	411,979,000	413,614,000
Impaired Loans Receivable, Recorded Investment [Abstract]
Total Impaired, with Reserve, Recorded Investment	11,864,000	12,263,000
Total Impaired, with no Reserve, Recorded Investment	17,645,000	24,801,000
Total Impaired, Recorded Investment	29,509,000	37,064,000
Impaired Loans Receivable, Unpaid Principal Balance [Abstract]
Total Impaired with Reserve, Unpaid Principal Balance	13,345,000	12,674,000
Total Impaired with no Reserve, Unpaid Principal Balance	19,795,000	30,519,000
Total Impaired, Unpaid Principal Balance, Total	33,140,000	43,193,000
Impaired Loans Receivable, Reserve [Abstract]
Total Impaired with Reserve, Reserve	2,386,000	2,631,000
Total Impaired with no Reserve, Reserve	0	0
Impaired Loans, Reserve	2,386,000	2,631,000
Impaired Loans Receivable, Cumulative Charge-Offs [Abstract]
Total Impaired with Reserve, Cumulative Charge-offs	1,481,000	411,000
Total Impaired with no Reserve, Cumulative Charge-offs	2,150,000	5,718,000
Total Impaired, Cumulative Charge-offs	3,631,000	6,129,000
Impaired Loans Receivable, Average Recorded Investment [Abstract]
Total Impaired with Reserve, Average Recorded Investment	15,982,000	13,256,000
Total Impaired with no Reserve, Average Recorded Investment	23,215,000	30,629,000
Total Impaired, Average Recorded Investment, Total	39,197,000	43,885,000
Impaired Loans Receivable, Interest Paid YTD [Abstract]
Total Impaired with Reserve, Interest Paid YTD	515,000	577,000
Total Impaired with no Reserve, Interest Paid YTD	860,000	1,080,000
Total Impaired, Interest Paid YTD	1,375,000	1,657,000
Over Four-Family [Member]
Loans Receivable, Recorded Investment [Line Items]
Loans receivable, net	522,281,000	521,597,000
Impaired Loans Receivable, Recorded Investment [Abstract]
Total Impaired, with Reserve, Recorded Investment	7,438,000	13,352,000
Total Impaired, with no Reserve, Recorded Investment	8,124,000	3,869,000
Total Impaired, Recorded Investment	15,562,000	17,221,000
Impaired Loans Receivable, Unpaid Principal Balance [Abstract]
Total Impaired with Reserve, Unpaid Principal Balance	10,285,000	13,400,000
Total Impaired with no Reserve, Unpaid Principal Balance	9,364,000	4,902,000
Total Impaired, Unpaid Principal Balance, Total	19,649,000	18,302,000
Impaired Loans Receivable, Reserve [Abstract]
Total Impaired with Reserve, Reserve	731,000	2,196,000
Total Impaired with no Reserve, Reserve	0	0
Impaired Loans, Reserve	731,000	2,196,000
Impaired Loans Receivable, Cumulative Charge-Offs [Abstract]
Total Impaired with Reserve, Cumulative Charge-offs	2,847,000	48,000
Total Impaired with no Reserve, Cumulative Charge-offs	1,240,000	1,033,000
Total Impaired, Cumulative Charge-offs	4,087,000	1,081,000
Impaired Loans Receivable, Average Recorded Investment [Abstract]
Total Impaired with Reserve, Average Recorded Investment	12,720,000	14,047,000
Total Impaired with no Reserve, Average Recorded Investment	12,693,000	5,431,000
Total Impaired, Average Recorded Investment, Total	25,413,000	19,478,000
Impaired Loans Receivable, Interest Paid YTD [Abstract]
Total Impaired with Reserve, Interest Paid YTD	177,000	660,000
Total Impaired with no Reserve, Interest Paid YTD	439,000	114,000
Total Impaired, Interest Paid YTD	616,000	774,000
Home Equity [Member]
Loans Receivable, Recorded Investment [Line Items]
Loans receivable, net	29,207,000	35,432,000
Impaired Loans Receivable, Recorded Investment [Abstract]
Total Impaired, with Reserve, Recorded Investment	144,000	1,427,000
Total Impaired, with no Reserve, Recorded Investment	445,000	529,000
Total Impaired, Recorded Investment	589,000	1,956,000
Impaired Loans Receivable, Unpaid Principal Balance [Abstract]
Total Impaired with Reserve, Unpaid Principal Balance	144,000	1,427,000
Total Impaired with no Reserve, Unpaid Principal Balance	445,000	529,000
Total Impaired, Unpaid Principal Balance, Total	589,000	1,956,000
Impaired Loans Receivable, Reserve [Abstract]
Total Impaired with Reserve, Reserve	63,000	862,000
Total Impaired with no Reserve, Reserve	0	0
Impaired Loans, Reserve	63,000	862,000
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	195,000	1,536,000
Total Impaired with no Reserve, Average Recorded Investment	554,000	533,000
Total Impaired, Average Recorded Investment, Total	749,000	2,069,000
Impaired Loans Receivable, Interest Paid YTD [Abstract]
Total Impaired with Reserve, Interest Paid YTD	7,000	59,000
Total Impaired with no Reserve, Interest Paid YTD	15,000	12,000
Total Impaired, Interest Paid YTD	22,000	71,000
Construction and Land [Member]
Loans Receivable, Recorded Investment [Line Items]
Loans receivable, net	17,081,000	31,905,000
Impaired Loans Receivable, Recorded Investment [Abstract]
Total Impaired, with Reserve, Recorded Investment	47,000	3,087,000
Total Impaired, with no Reserve, Recorded Investment	2,219,000	3,440,000
Total Impaired, Recorded Investment	2,266,000	6,527,000
Impaired Loans Receivable, Unpaid Principal Balance [Abstract]
Total Impaired with Reserve, Unpaid Principal Balance	61,000	3,087,000
Total Impaired with no Reserve, Unpaid Principal Balance	2,332,000	6,133,000
Total Impaired, Unpaid Principal Balance, Total	2,393,000	9,220,000
Impaired Loans Receivable, Reserve [Abstract]
Total Impaired with Reserve, Reserve	13,000	624,000
Total Impaired with no Reserve, Reserve	0	0
Impaired Loans, Reserve	13,000	624,000
Impaired Loans Receivable, Cumulative Charge-Offs [Abstract]
Total Impaired with Reserve, Cumulative Charge-offs	14,000	0
Total Impaired with no Reserve, Cumulative Charge-offs	113,000	2,693,000
Total Impaired, Cumulative Charge-offs	127,000	2,693,000
Impaired Loans Receivable, Average Recorded Investment [Abstract]
Total Impaired with Reserve, Average Recorded Investment	63,000	3,092,000
Total Impaired with no Reserve, Average Recorded Investment	3,379,000	6,135,000
Total Impaired, Average Recorded Investment, Total	3,442,000	9,227,000
Impaired Loans Receivable, Interest Paid YTD [Abstract]
Total Impaired with Reserve, Interest Paid YTD	0	93,000
Total Impaired with no Reserve, Interest Paid YTD	97,000	62,000
Total Impaired, Interest Paid YTD	97,000	155,000
Commercial Real Estate [Member]
Loans Receivable, Recorded Investment [Line Items]
Loans receivable, net	94,771,000	71,698,000
Impaired Loans Receivable, Recorded Investment [Abstract]
Total Impaired, with Reserve, Recorded Investment	2,984,000	839,000
Total Impaired, with no Reserve, Recorded Investment	93,000	459,000
Total Impaired, Recorded Investment	3,077,000	1,298,000
Impaired Loans Receivable, Unpaid Principal Balance [Abstract]
Total Impaired with Reserve, Unpaid Principal Balance	3,544,000	1,324,000
Total Impaired with no Reserve, Unpaid Principal Balance	93,000	523,000
Total Impaired, Unpaid Principal Balance, Total	3,637,000	1,847,000
Impaired Loans Receivable, Reserve [Abstract]
Total Impaired with Reserve, Reserve	526,000	370,000
Total Impaired with no Reserve, Reserve	0	0
Impaired Loans, Reserve	526,000	370,000
Impaired Loans Receivable, Cumulative Charge-Offs [Abstract]
Total Impaired with Reserve, Cumulative Charge-offs	560,000	485,000
Total Impaired with no Reserve, Cumulative Charge-offs	0	64,000
Total Impaired, Cumulative Charge-offs	560,000	549,000
Impaired Loans Receivable, Average Recorded Investment [Abstract]
Total Impaired with Reserve, Average Recorded Investment	4,211,000	1,339,000
Total Impaired with no Reserve, Average Recorded Investment	126,000	524,000
Total Impaired, Average Recorded Investment, Total	4,337,000	1,863,000
Impaired Loans Receivable, Interest Paid YTD [Abstract]
Total Impaired with Reserve, Interest Paid YTD	128,000	35,000
Total Impaired with no Reserve, Interest Paid YTD	4,000	27,000
Total Impaired, Interest Paid YTD	132,000	62,000
Consumer [Member]
Loans Receivable, Recorded Investment [Line Items]
Loans receivable, net	200,000	134,000
Impaired Loans Receivable, Recorded Investment [Abstract]
Total Impaired, with Reserve, Recorded Investment	0	0
Total Impaired, with no Reserve, Recorded Investment	0	17,000
Total Impaired, Recorded Investment	0	17,000
Impaired Loans Receivable, Unpaid Principal Balance [Abstract]
Total Impaired with Reserve, Unpaid Principal Balance	0	0
Total Impaired with no Reserve, Unpaid Principal Balance	0	17,000
Total Impaired, Unpaid Principal Balance, Total	0	17,000
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	0	19,000
Total Impaired, Average Recorded Investment, Total	0	19,000
Impaired Loans Receivable, Interest Paid YTD [Abstract]
Total Impaired with Reserve, Interest Paid YTD	0	0
Total Impaired with no Reserve, Interest Paid YTD	0	1,000
Total Impaired, Interest Paid YTD	0	1,000
Commercial Loans [Member]
Loans Receivable, Recorded Investment [Line Items]
Loans receivable, net	19,471,000	18,296,000
Impaired Loans Receivable, Recorded Investment [Abstract]
Total Impaired, with Reserve, Recorded Investment	7,000	569,000
Total Impaired, with no Reserve, Recorded Investment	292,000	11,000
Total Impaired, Recorded Investment	299,000	580,000
Impaired Loans Receivable, Unpaid Principal Balance [Abstract]
Total Impaired with Reserve, Unpaid Principal Balance	7,000	569,000
Total Impaired with no Reserve, Unpaid Principal Balance	535,000	11,000
Total Impaired, Unpaid Principal Balance, Total	542,000	580,000
Impaired Loans Receivable, Reserve [Abstract]
Total Impaired with Reserve, Reserve	7,000	258,000
Total Impaired with no Reserve, Reserve	0	0
Impaired Loans, Reserve	7,000	258,000
Impaired Loans Receivable, Cumulative Charge-Offs [Abstract]
Total Impaired with Reserve, Cumulative Charge-offs	0	0
Total Impaired with no Reserve, Cumulative Charge-offs	243,000	0
Total Impaired, Cumulative Charge-offs	243,000	0
Impaired Loans Receivable, Average Recorded Investment [Abstract]
Total Impaired with Reserve, Average Recorded Investment	12,000	570,000
Total Impaired with no Reserve, Average Recorded Investment	470,000	11,000
Total Impaired, Average Recorded Investment, Total	482,000	581,000
Impaired Loans Receivable, Interest Paid YTD [Abstract]
Total Impaired with Reserve, Interest Paid YTD	1,000	1,000
Total Impaired with no Reserve, Interest Paid YTD	2,000	1,000
Total Impaired, Interest Paid YTD	3,000	2,000
Substandard [Member]
Loans Receivable, Recorded Investment [Line Items]
Loans receivable, net	47,849,000	62,509,000
Substandard [Member] | One-to Four-Family [Member]
Loans Receivable, Recorded Investment [Line Items]
Loans receivable, net	28,945,000	37,060,000
Substandard [Member] | Over Four-Family [Member]
Loans Receivable, Recorded Investment [Line Items]
Loans receivable, net	12,638,000	14,809,000
Substandard [Member] | Home Equity [Member]
Loans Receivable, Recorded Investment [Line Items]
Loans receivable, net	624,000	2,169,000
Substandard [Member] | Construction and Land [Member]
Loans Receivable, Recorded Investment [Line Items]
Loans receivable, net	2,266,000	6,576,000
Substandard [Member] | Commercial Real Estate [Member]
Loans Receivable, Recorded Investment [Line Items]
Loans receivable, net	3,077,000	1,298,000
Substandard [Member] | Consumer [Member]
Loans Receivable, Recorded Investment [Line Items]
Loans receivable, net	0	17,000
Substandard [Member] | Commercial Loans [Member]
Loans Receivable, Recorded Investment [Line Items]
Loans receivable, net	299,000	580,000
Watch [Member]
Loans Receivable, Recorded Investment [Line Items]
Loans receivable, net	22,530,000	32,974,000
Watch [Member] | One-to Four-Family [Member]
Loans Receivable, Recorded Investment [Line Items]
Loans receivable, net	10,779,000	14,402,000
Watch [Member] | Over Four-Family [Member]
Loans Receivable, Recorded Investment [Line Items]
Loans receivable, net	7,070,000	13,108,000
Watch [Member] | Home Equity [Member]
Loans Receivable, Recorded Investment [Line Items]
Loans receivable, net	278,000	1,077,000
Watch [Member] | Construction and Land [Member]
Loans Receivable, Recorded Investment [Line Items]
Loans receivable, net	1,377,000	1,866,000
Watch [Member] | Commercial Real Estate [Member]
Loans Receivable, Recorded Investment [Line Items]
Loans receivable, net	2,186,000	1,401,000
Watch [Member] | Consumer [Member]
Loans Receivable, Recorded Investment [Line Items]
Loans receivable, net	0	0
Watch [Member] | Commercial Loans [Member]
Loans Receivable, Recorded Investment [Line Items]
Loans receivable, net	840,000	1,120,000
Pass [Member]
Loans Receivable, Recorded Investment [Line Items]
Loans receivable, net	1,024,611,000	997,193,000
Pass [Member] | One-to Four-Family [Member]
Loans Receivable, Recorded Investment [Line Items]
Loans receivable, net	372,255,000	362,152,000
Pass [Member] | Over Four-Family [Member]
Loans Receivable, Recorded Investment [Line Items]
Loans receivable, net	502,573,000	493,680,000
Pass [Member] | Home Equity [Member]
Loans Receivable, Recorded Investment [Line Items]
Loans receivable, net	28,305,000	32,186,000
Pass [Member] | Construction and Land [Member]
Loans Receivable, Recorded Investment [Line Items]
Loans receivable, net	13,438,000	23,463,000
Pass [Member] | Commercial Real Estate [Member]
Loans Receivable, Recorded Investment [Line Items]
Loans receivable, net	89,508,000	68,999,000
Pass [Member] | Consumer [Member]
Loans Receivable, Recorded Investment [Line Items]
Loans receivable, net	200,000	117,000
Pass [Member] | Commercial Loans [Member]
Loans Receivable, Recorded Investment [Line Items]
Loans receivable, net	$18,332,000	$16,596,000

Loans_Receivable_Part_V_Detail

Loans Receivable, Part V (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
	Loan	Loan
Troubled Debt Restructuring Note, Debtor [Abstract]
Amount of troubled debt restructuring	$26,117,000	$29,587,000
Total number of troubled debt restructurings	77	96
Valuation allowance with respect to troubled debt restructurings	1,500,000	2,600,000
Troubled Debt Restructurings by Concession Type [Abstract]
Loans Receivable, Modifications, Loans Performing in Accordance with Modified Terms	20,671,000	23,717,000
Number of loans performing in accordance with modified terms (in loans)	50	53
Loans Receivable, Modifications, Loans in Default	5,446,000	5,870,000
Number of Loans in Default (in loans)	27	43
Loans Receivable, Modifications, Total	26,117,000	29,587,000
Number of Loans, Total (in loans)	77	96
Data on Troubled Debt Restructuring [Abstract]
Loans modified as a troubled debt restructure	5,680,000	1,719,000
Number of loans modified as a troubled debt restructuring (in loans)	21	10
Non-accrual Loans [Abstract]
Total non-accrual loans	38,011,000	50,961,000
Ratio of total non-accrual loans to total loans, net of allowance (in hundredths)	3.47%	4.66%
Ratio of total non-accrual loans to total assets (in hundredths)	2.13%	2.62%
One-to Four-Family [Member]
Troubled Debt Restructuring Note, Debtor [Abstract]
Amount of troubled debt restructuring	14,957,000	18,093,000
Total number of troubled debt restructurings	63	83
Data on Troubled Debt Restructuring [Abstract]
Loans modified as a troubled debt restructure	2,939,000	1,682,000
Number of loans modified as a troubled debt restructuring (in loans)	14	9
Non-accrual Loans [Abstract]
Total non-accrual loans	23,918,000	30,207,000
Over Four-Family [Member]
Troubled Debt Restructuring Note, Debtor [Abstract]
Amount of troubled debt restructuring	7,720,000	8,024,000
Total number of troubled debt restructurings	9	5
Data on Troubled Debt Restructuring [Abstract]
Loans modified as a troubled debt restructure	1,337,000	0
Number of loans modified as a troubled debt restructuring (in loans)	5	0
Non-accrual Loans [Abstract]
Total non-accrual loans	12,001,000	13,498,000
Home Equity [Member]
Troubled Debt Restructuring Note, Debtor [Abstract]
Amount of troubled debt restructuring	98,000	972,000
Total number of troubled debt restructurings	1	3
Data on Troubled Debt Restructuring [Abstract]
Loans modified as a troubled debt restructure	98,000	37,000
Number of loans modified as a troubled debt restructuring (in loans)	1	1
Non-accrual Loans [Abstract]
Total non-accrual loans	445,000	1,585,000
Construction and Land [Member]
Troubled Debt Restructuring Note, Debtor [Abstract]
Amount of troubled debt restructuring	1,866,000	2,241,000
Total number of troubled debt restructurings	2	3
Non-accrual Loans [Abstract]
Total non-accrual loans	401,000	4,195,000
Commercial Real Estate [Member]
Troubled Debt Restructuring Note, Debtor [Abstract]
Amount of troubled debt restructuring	1,476,000	257,000
Total number of troubled debt restructurings	2	2
Data on Troubled Debt Restructuring [Abstract]
Loans modified as a troubled debt restructure	1,306,000	0
Number of loans modified as a troubled debt restructuring (in loans)	1	0
Non-accrual Loans [Abstract]
Total non-accrual loans	947,000	938,000
Consumer [Member]
Non-accrual Loans [Abstract]
Total non-accrual loans	0	17,000
Commercial Loans [Member]
Non-accrual Loans [Abstract]
Total non-accrual loans	299,000	521,000
Minimum [Member]
Troubled Debt Restructuring Note, Debtor [Abstract]
Period of principal forbearance, reduction in interest rate or both included in typical restructured terms (in months)	6 months
Minimum number of consecutive contractual payments received prior to consideration for a return to accrual status (in payments)	6
Maximum [Member]
Troubled Debt Restructuring Note, Debtor [Abstract]
Period of principal forbearance, reduction in interest rate or both included in typical restructured terms (in months)	12 months
Accruing [Member]
Troubled Debt Restructuring Note, Debtor [Abstract]
Amount of troubled debt restructuring	10,819,000	10,336,000
Total number of troubled debt restructurings	13	15
Accruing [Member] | One-to Four-Family [Member]
Troubled Debt Restructuring Note, Debtor [Abstract]
Amount of troubled debt restructuring	4,724,000	6,218,000
Total number of troubled debt restructurings	8	13
Accruing [Member] | Over Four-Family [Member]
Troubled Debt Restructuring Note, Debtor [Abstract]
Amount of troubled debt restructuring	2,923,000	2,710,000
Total number of troubled debt restructurings	2	1
Accruing [Member] | Home Equity [Member]
Troubled Debt Restructuring Note, Debtor [Abstract]
Amount of troubled debt restructuring	0	0
Total number of troubled debt restructurings	0	0
Accruing [Member] | Construction and Land [Member]
Troubled Debt Restructuring Note, Debtor [Abstract]
Amount of troubled debt restructuring	1,866,000	1,408,000
Total number of troubled debt restructurings	2	1
Accruing [Member] | Commercial Real Estate [Member]
Troubled Debt Restructuring Note, Debtor [Abstract]
Amount of troubled debt restructuring	1,306,000	0
Total number of troubled debt restructurings	1	0
Non-accruing [Member]
Troubled Debt Restructuring Note, Debtor [Abstract]
Amount of troubled debt restructuring	15,298,000	19,251,000
Total number of troubled debt restructurings	64	81
Non-accruing [Member] | One-to Four-Family [Member]
Troubled Debt Restructuring Note, Debtor [Abstract]
Amount of troubled debt restructuring	10,233,000	11,875,000
Total number of troubled debt restructurings	55	70
Non-accruing [Member] | Over Four-Family [Member]
Troubled Debt Restructuring Note, Debtor [Abstract]
Amount of troubled debt restructuring	4,797,000	5,314,000
Total number of troubled debt restructurings	7	4
Non-accruing [Member] | Home Equity [Member]
Troubled Debt Restructuring Note, Debtor [Abstract]
Amount of troubled debt restructuring	98,000	972,000
Total number of troubled debt restructurings	1	3
Non-accruing [Member] | Construction and Land [Member]
Troubled Debt Restructuring Note, Debtor [Abstract]
Amount of troubled debt restructuring	0	833,000
Total number of troubled debt restructurings	0	2
Non-accruing [Member] | Commercial Real Estate [Member]
Troubled Debt Restructuring Note, Debtor [Abstract]
Amount of troubled debt restructuring	170,000	257,000
Total number of troubled debt restructurings	1	2
Interest Reduction and Principal Forbearance [Member]
Troubled Debt Restructurings by Concession Type [Abstract]
Loans Receivable, Modifications, Loans Performing in Accordance with Modified Terms	15,306,000	15,160,000
Number of loans performing in accordance with modified terms (in loans)	36	37
Loans Receivable, Modifications, Loans in Default	2,014,000	3,638,000
Number of Loans in Default (in loans)	7	19
Loans Receivable, Modifications, Total	17,320,000	18,798,000
Number of Loans, Total (in loans)	43	56
Interest Reduction [Member]
Troubled Debt Restructurings by Concession Type [Abstract]
Loans Receivable, Modifications, Loans Performing in Accordance with Modified Terms	4,875,000	3,317,000
Number of loans performing in accordance with modified terms (in loans)	11	11
Loans Receivable, Modifications, Loans in Default	800,000	2,232,000
Number of Loans in Default (in loans)	19	24
Loans Receivable, Modifications, Total	5,675,000	5,549,000
Number of Loans, Total (in loans)	30	35
Principal Forbearance [Member]
Troubled Debt Restructurings by Concession Type [Abstract]
Loans Receivable, Modifications, Loans Performing in Accordance with Modified Terms	490,000	5,240,000
Number of loans performing in accordance with modified terms (in loans)	3	5
Loans Receivable, Modifications, Loans in Default	2,632,000	0
Number of Loans in Default (in loans)	1	0
Loans Receivable, Modifications, Total	$3,122,000	$5,240,000
Number of Loans, Total (in loans)	4	5

Office_Properties_and_Equipmen2

Office Properties and Equipment (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Office properties and equipment [Abstract]
Office properties and equipment, gross	$50,866,000	$49,273,000
Less accumulated depreciation	-25,304,000	-22,183,000
Office properties and equipment, net	25,562,000	27,090,000
Depreciation of premises and equipment	3,283,000	2,717,000	2,081,000
Rent expense totaled	4,500,000	3,300,000	2,800,000
Minimum annual commitments under all non-cancelable lease agreements [Abstract]
Within one year	2,349,000
One to two years	1,764,000
Two to three years	1,482,000
Three to four years	1,200,000
Four through five years	755,000
After five years	2,901,000
Total	10,451,000
Land [Member]
Office properties and equipment [Abstract]
Office properties and equipment, gross	6,442,000	6,444,000
Office buildings and improvements [Member]
Office properties and equipment [Abstract]
Office properties and equipment, gross	28,085,000	27,634,000
Furniture and equipment [Member]
Office properties and equipment [Abstract]
Office properties and equipment, gross	$16,339,000	$15,195,000

Real_Estate_Owned_Details

Real Estate Owned (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Real Estate Owned [Line Items]
Real estate owned	$18,706	$22,663	$35,974
Mortgage loans transferred to real estate owned upon completion of foreclosure	16,645	13,552
Sales of real estate owned	-19,057	-25,734
Write downs of real estate owned	-1,523	-1,382
Other Real Estate Owned	-22	253
One- to four-family [Member]
Real Estate Owned [Line Items]
Real estate owned	10,796	12,980
Over four-family [Member]
Real Estate Owned [Line Items]
Real estate owned	2,210	3,040
Construction and land [Member]
Real Estate Owned [Line Items]
Real estate owned	5,400	6,258
Commercial Real Estate [Member]
Real Estate Owned [Line Items]
Real estate owned	$300	$385

Mortgage_Servicing_Rights_Deta

Mortgage Servicing Rights (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Mortgage servicing rights [Roll Forward]
Mortgage servicing rights, beginning balance	$3,377,000	$3,220,000
Additions	4,181,000	4,077,000
Amortization	-435,000	-1,125,000
Sales Of Mortgage Servicing Rights	-4,602,000	-2,795,000
Mortgage servicing rights, ending balance	2,521,000	3,377,000
Valuation allowance at period end	-10,000	0
Mortgage servicing rights, end of period net	2,511,000	3,377,000
MSR Sales [Line Items]
Loans Originated for Sale - Residential	1,700,000,000	1,800,000,000
Sales of loans held for sale	1,600,000,000	1,900,000,000
Generated mortgage banking income	78,000,000	80,300,000
Loans sold on a servicing retained basis	308,100,000	563,700,000
Sold mortgage servicing rights	713,000,000
Mortgage servicing rights book value	4,600,000
Mortgage servicing rights sold	7,100,000
Gain on sale of MSR	2,500,000
Mortgage Servicing Rights [Member]
Estimated future servicing rights amortization expense by period [Abstract]
2015	406,000
2016	367,000
2017	330,000
2018	294,000
2019	184,000
Thereafter	930,000
Total	$2,511,000

Deposits_Details

Deposits (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Deposits [Abstract]
Time deposits, greater than $250,000	$34,600,000	$23,900,000
Summary of interest expense on deposits [Abstract]
Interest-bearing demand deposits	16,000	13,000	23,000
Money market and savings deposits	113,000	132,000	272,000
Time deposits	4,797,000	5,070,000	9,182,000
Interest expense on deposits	4,926,000	5,215,000	9,477,000
Summary of the contractual maturities of time deposits [Abstract]
Within one year	417,484,000
More than one to two years	195,873,000
More than two to three years	27,339,000
More than three to four years	9,463,000
More than four through five years	2,476,000
Time deposits	$652,635,000	$637,750,000

Borrowings_Details

Borrowings (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Short-term Debt [Line Items]
Short-term borrowings	$0	$21,197,000
Weighted average rate (in hundredths)	0.00%	3.19%
Long-term Debt [Line Items]
Long-term borrowings	434,000,000	434,000,000
Total debt	434,000,000	455,197,000
Weighted average rate (in hundredths)	3.89%	3.86%
Total commitment on repurchase agreements	35,000,000	90,000,000
First Repurchase Agreement [Member]
Long-term Debt [Line Items]
Repurchase agreement outstanding balance		17,500,000
Interest rate (in hundredths)		3.17%
Total commitment on repurchase agreements	35,000,000	40,000,000
Second Repurchase Agreement [Member]
Long-term Debt [Line Items]
Repurchase agreement outstanding balance
Interest rate (in hundredths)
Total commitment on repurchase agreements
Percentage of carrying value of qualifying unencumbered mortgage loans (in hundredths)	75.00%
Percentage of carrying value of qualifying home equity loans (in hundredths)	40.00%
Percentage of carrying value of qualifying of over four-family loans (in hundredths)	60.00%
FHLBC stock as collateral	17,500,000	17,500,000
FHLB, Chicago, Advances, Maturing 2016 [Member]
Long-term Debt [Line Items]
Long-term borrowings	220,000,000	220,000,000
FHLB, weighted average rate (in hundredths)	4.34%	4.34%
FHLB, year of maturity	2016
Number of Federal Home Loan Bank Advances (in loans)	8
FHLB, interest rate, minimum (in hundredths)	4.01%
FHLB, interest rate, maximum (in hundredths)	4.82%
FHLB, Chicago, Advances, Maturing 2017 [Member]
Long-term Debt [Line Items]
Long-term borrowings	65,000,000	65,000,000
FHLB, weighted average rate (in hundredths)	3.19%	3.19%
FHLB, year of maturity	2017
Number of Federal Home Loan Bank Advances (in loans)	3
FHLB, interest rate, minimum (in hundredths)	3.09%
FHLB, interest rate, maximum (in hundredths)	3.46%
FHLB, Chicago, Advances, Maturing 2018 [Member]
Long-term Debt [Line Items]
Long-term borrowings	65,000,000	65,000,000
FHLB, weighted average rate (in hundredths)	2.97%	2.97%
FHLB, year of maturity	2018
Number of Federal Home Loan Bank Advances (in loans)	3
FHLB, interest rate, minimum (in hundredths)	2.73%
FHLB, interest rate, maximum (in hundredths)	3.11%
Repurchase Agreements Maturing 2018 [Member]
Long-term Debt [Line Items]
Long-term borrowings	84,000,000	84,000,000
Weighted average rate (in hundredths)	3.96%	3.96%
FHLB, year of maturity	2017
Interest rate, minimum (in hundredths)	2.89%
Interest rate, maximum (in hundredths)	4.31%
Available for sale securities as collateral	$98,200,000

Regulatory_Capital_Details

Regulatory Capital (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Nov. 25, 2009
In Thousands, unless otherwise specified
Regulatory Capital [Abstract]
Minimum Tier 1 capital ratio (in hundredths)			8.50%
Minimum total risk based capital ratio (in hundredths)			12.00%
Actual [Abstract]
Total capital (to risk-weighted assets)	$357,514	$219,146
Tier I capital (to risk-weighted assets)	343,483	206,364
Tier I capital (to average assets)	343,483	206,364
State of Wisconsin (to total assets)	343,483	206,364
Total capital (to risk-weighted assets) (in hundredths)	31.98%	21.67%
Tier I capital (to risk-weighted assets) (in hundredths)	30.73%	20.41%
Tier I capital (to average assets) (in hundredths)	19.04%	12.48%
State of Wisconsin (to total assets) (in hundredths)	19.33%	10.65%
For Capital Adequacy Purposes [Abstract]
Total capital (to risk-weighted assets)	89,428	80,887
Tier I capital (to risk-weighted assets)	44,714	40,443
Tier I capital (to average assets)	72,175	66,161
State of Wisconsin (to total assets)	106,643	116,252
Total capital (to risk-weighted assets) (in hundredths)	8.00%	8.00%
Tier I capital (to risk-weighted assets) (in hundredths)	4.00%	4.00%
Tier I capital (to average assets) (in hundredths)	4.00%	4.00%
State of Wisconsin (to total assets) (in hundredths)	6.00%	6.00%
To Be Well-Capitalized Under Prompt Corrective Action Provisions [Abstract]
Total capital (to risk-weighted assets)	111,785	101,109
Tier I capital (to risk-weighted assets)	67,071	60,665
Tier I capital (to average assets)	$90,219	$82,701
Total capital (to risk-weighted assets) (in hundredths)	10.00%	10.00%
Tier I capital (to risk-weighted assets) (in hundredths)	6.00%	6.00%
Tier I capital (to average assets) (in hundredths)	5.00%	5.00%

Stock_Based_Compensation_Detai

Stock Based Compensation (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Schedule for assumptions for estimating the fair value of options granted [Abstract]
Dividend Yield (in hundredths)			0.00%
Risk-free interest rate (in hundredths)			0.25%
Expected volatility (in hundredths)			74.53%
Weighted average expected life (in years)			6 years 6 months
Weighted average per share value of options (in dollars per share)			$1.25
Stock option activity shares [Roll Forward]
Outstanding, beginning balance (in shares)	1,098,947	1,119,795	869,610
Options exercisable, beginning balance (in shares)	870,707	816,939	657,282
Granted (in shares)	0	0	279,811
Exercised (in shares)	-31,624	-1,097	-3,291
Forfeited (in shares)	-96,576	-19,751	-26,335
Outstanding, ending balance (in shares)	970,747	1,098,947	1,119,795	869,610
Options exercisable, ending balance (in shares)	824,803	870,707	816,939	657,282
Weighted Average Exercise Price [Roll Forward]
Outstanding, beginning balance (in dollars per share)	$12.11	$11.95	$14.88
Outstanding, beginning balance (in dollars per share)	$14.23	$15.12	$15.75
Granted (in dollars per share)	$0	$0	$1.85
Exercised (in dollars per share)	$1.73	$1.72	$4.24
Forfeited (in dollars per share)	$13.33	$4.63	$8.14
Outstanding, beginning balance (in dollars per share)	$12.33	$14.23	$15.12	$15.75
Outstanding, ending balance (in dollars per share)	$14.16	$12.11	$11.95	$14.88
Weighted Average Years Remaining in Contractual Term [Abstract]
Outstanding, Weighted Average Years Remaining in Contractual Term	3 years 3 months 25 days	4 years 2 months 5 days	5 years 8 months 8 days	5 years 4 months 13 days
Options exercisable, Weighted Average Years Remaining in Contractual Term	2 years 8 months 1 day	3 years 3 months 11 days	4 years 3 months 22 days	5 years 1 month 13 days
Aggregate Intrinsic Value [Abstract]
Outstanding, Aggregate Intrinsic Value, beginning period	$2,744,000	$1,622,000	$0
Options exercisable, Aggregate Intrinsic Value, beginning period	636,000	80,000	0
Granted, Aggregate Intrinsic Value	0	0	0
Exercised, Aggregate Intrinsic Value	361,000	-9,000	9,000
Forfeited, Aggregate Intrinsic Value	-18,000	-112,000	-72,000
Outstanding, Aggregate Intrinsic Value, ending period	797,000	2,744,000	1,622,000	0
Options exercisable, Aggregate Intrinsic Value, ending period	-829,000	636,000	80,000	0
Nonvested stock option and restricted stock shares [Roll Forward]
Granted (in shares)	0	0	279,811
Vested (in shares)	82,297	7,681	10,973
Forfeited (in shares)	96,576	19,751	26,335
Exercised (in shares)	31,624	1,097	3,291
Forfeited (in shares)	-96,576	-19,751	-26,335
Nonvested stock option and restricted stock weighted average grant date fair value [Roll Forward]
Share-based compensation expense	80,000	81,000	94,000
2006 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	5 years
Award grant life (in years)	10 years
Stock Options [Member]
Weighted Average Exercise Price [Roll Forward]
Granted (in dollars per share)		$0
Nonvested stock option and restricted stock shares [Roll Forward]
Nonvested, beginning period (in shares)	228,238	302,854
Granted (in shares)	0	0
Vested (in shares)	-62,543	-62,546
Forfeited (in shares)	-19,751	-12,070
Nonvested, ending period (in shares)	145,944	228,238
Forfeited (in shares)	19,751	12,070
Nonvested stock option and restricted stock weighted average grant date fair value [Roll Forward]
Nonvested, beginning period (in dollars per share)	$1.33	$1.35
Granted (in dollars per share)	$0	$0
Vested (in dollars per share)	$1.41	$1.41
Forfeited (in dollars per share)	$1.14	$1.36
Nonvested, ending period (in dollars per share)	$1.32	$1.33
Unrecognized stock based compensation expense	138,000
Unrecognized stock based compensation expense recognize period (in months)	23 months
Restricted Stock [Member]
Nonvested stock option and restricted stock shares [Roll Forward]
Nonvested, beginning period (in shares)	87,784	110,827
Granted (in shares)	0	0
Vested (in shares)	-21,945	-23,043
Forfeited (in shares)	-16,459	0
Nonvested, ending period (in shares)	49,380	87,784	110,827
Forfeited (in shares)	16,459	0
Nonvested stock option and restricted stock weighted average grant date fair value [Roll Forward]
Nonvested, beginning period (in dollars per share)	$1.72	$1.79
Granted (in dollars per share)	$0	$0
Vested (in dollars per share)	$1.73	$2.09
Forfeited (in dollars per share)	$1.73	$0
Nonvested, ending period (in dollars per share)	$1.73	$1.72	$1.79
Share-based compensation expense	28,000	45,000	51,000
Unrecognized stock based compensation expense	$57,000	$113,000
Unrecognized stock based compensation expense recognize period (in months)	24 months	36 months

Employee_Benefit_Plans_Details

Employee Benefit Plans (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
	Employee
Defined Benefit Plan Disclosure [Line Items]
Minimum age criteria for participation in benefit plan (in years)	18 years	18 years	18 years
Contributions to the Plans	$488,000	$486,000	$70,000
Number of employees under nonqualified salary continuation plan (in employees)	1
Defined Contribution Plan period under nonqualified salary continuation plan (in years)	10 years
Accrued liability	384,000	535,000
Death benefit under nonqualified salary continuation plan	7,100,000
Cash surrender value of life insurance	3,900,000	3,600,000
Expense for compensation	$0	$0
Waterstone Mortgage [Member]
Defined Benefit Plan Disclosure [Line Items]
Minimum age criteria for participation in benefit plan (in years)	18 years

Employee_Stock_Ownership_Plan_1

Employee Stock Ownership Plan (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2005
Employee Stock Ownership Plan [Abstract]
Minimum employee age (in years)	21 years
Minimum employee tenure (in months)	12 months
Minimum service hour required for employee stock option plan (in hours)	1000 hours
Borrowings under stock ownership plan	$23,800,000
Common stock open market purchase (in shares)				835,610
Amount of share released	one-twentieth
Tenure of shares earned (in years)	20 years
Compensation expense attributed to the ESOP	1,200,000	719,000	306,000
Aggregate activity of unearned ESOP shares [Abstract]
Beginning ESOP shares (in shares)	83,561	167,122
Shares purchased under 2014 plan	2,024,000	0
Shares committed to be released (in shares)	-105,378	-83,561
Unreleased shares (in shares)	2,002,183	83,561
Fair value of unreleased shares	$26,200,000	$845,000

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended	12 Months Ended
	Jun. 30, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current [Abstract]
Federal		$3,158,000	$2,842,000	$4,256,000
State		301,000	385,000	435,000
Current Total		3,459,000	3,227,000	4,691,000
Deferred [Abstract]
Federal		2,578,000	3,861,000	-12,664,000
State		1,138,000	1,533,000	-4,231,000
Deferred Total		3,716,000	5,394,000	-16,895,000
Total		7,175,000	8,621,000	-12,204,000
Differential income tax provisions computed at the Federal statutory corporate tax rate [Abstract]
Income (loss) before income tax		19,907,000	23,329,000	22,710,000
Tax at Federal statutory rate (35%)		6,967,000	8,165,000	7,949,000
Add (deduct) effect of [Abstract]
State income taxes net of Federal income tax benefit (expense)		936,000	1,246,000	-2,467,000
Cash surrender value of life insurance		-451,000	-376,000	-375,000
Non-deductible ESOP and stock option expense		39,000	-62,000	103,000
Tax-exempt interest income		-514,000	-392,000	-185,000
Reversal of federal valuation allowance on deferred taxes		0	0	-17,008,000
Increase in tax exposure reserve		0	0	-184,000
Other		198,000	40,000	-37,000
Total		7,175,000	8,621,000	-12,204,000
Federal statutory rate (in hundredths)		35.00%	35.00%	35.00%
Effective tax rate (in hundredths)		36.00%	37.00%	-53.70%
Number of prior periods of cumulative losses included in examples of negative evidence
Number of most recent periods of cumulative loss used as negative evidence in determining necessity of valuation allowance
Federal and state income tax benefit
Gross deferred tax assets [Abstract]
Excess book depreciation		290,000	46,000
Compensation agreements		149,000	210,000
Restricted stock and stock options		911,000	991,000
Allowance for loan losses		7,272,000	9,523,000
Repurchase reserve for loans sold		145,000	122,000
Real estate owned write-downs		1,001,000	2,401,000
Interest recognized for tax but not books		1,371,000	1,390,000
Federal NOL carryforward		465,000	467,000
State NOL carryforward		230,000	508,000
Unrealized loss on impaired securities		45,000	0
Unrealized loss on securities available for sale		0	598,000
Other		87,000	291,000
Total gross deferred tax assets		11,966,000	16,547,000
Gross deferred tax liabilities [Abstract]
Unrealized gain on securities available for sale, net		-1,130,000	0
Mortgage Servicing Rights		-1,019,000	-1,365,000
FHLB stock dividends		-729,000	-736,000
Deferred loan fees		-708,000	-622,000
Deferred liabilities		-3,586,000	-2,723,000
Net deferred tax assets		8,380,000	13,824,000
Operating Loss Carryforwards [Line Items]
Retained earnings excluding federal or state taxes		16,700,000
Reconciliation of the beginning and ending amount of unrecognized tax benefits [Roll Forward]
Balance at January 1		0	71,000
Increases related to prior year tax positions		0	0
Increases related to current year tax positions		0	0
Decreases related to prior year tax positions		0	-71,000
Balance at December 31		0	0	71,000
Payment towards IRS proposed IRS adjustment				982,000
Income tax interest or penalties		0	0	0
Income tax interest or penalties accrued		0	0	53,000
Federal [Member]
Operating Loss Carryforwards [Line Items]
NOL Carryforwards
Wisconsin [Member]
Operating Loss Carryforwards [Line Items]
NOL Carryforwards		$4,500,000
Operating Loss Carryforwards, Expiration Year		2028

Offsetting_of_Assets_and_Liabi2

Offsetting of Assets and Liabilities (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Repo-Net Amount [Member]
Schedule of Liabilities subject to netting agreement [Line Items]
Repurchase Agreement Totals	$0	$0
Short-term Repurchase Agreements	0	0
Long term repurchase agreements	0	0
Repo-Gross Recognized Liabilities [Member]
Schedule of Liabilities subject to netting agreement [Line Items]
Repurchase Agreement Totals	84,000	101,526
Short-term Repurchase Agreements	0	17,526
Long term repurchase agreements	84,000	84,000
Gross Amounts Offset [Member]
Schedule of Liabilities subject to netting agreement [Line Items]
Repurchase Agreement Totals	0	0
Short-term Repurchase Agreements	0	0
Long term repurchase agreements	0	0
Net Amounts Presented [Member]
Schedule of Liabilities subject to netting agreement [Line Items]
Repurchase Agreement Totals	84,000	101,526
Short-term Repurchase Agreements	0	17,526
Long term repurchase agreements	84,000	84,000
Gross Amounts Not Offset [Member]
Schedule of Liabilities subject to netting agreement [Line Items]
Repurchase Agreement Totals	84,000	101,526
Short-term Repurchase Agreements	0	17,526
Long term repurchase agreements	$84,000	$84,000

Financial_Instruments_with_Off2

Financial Instruments with Off-Balance Sheet Risk (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet risks liability amount	$766,000	$696,000
Probable losses	0	0
Commitments to Extend Credit Under Amortizing Loans [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet risks asset amount	18,889,000	9,637,000
Commitments to Extend Credit Under Home Equity Lines of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet risks asset amount	14,775,000	14,699,000
Unused Portion of Construction Loans [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet risks asset amount	12,333,000	8,637,000
Unused Portion of Business Lines of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet risks asset amount	$11,599,000	$10,364,000

Derivative_Financial_Instrumen2

Derivative Financial Instruments (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014
Forward commitments to sell mortgage loans [Member]
Derivative [Line Items]
Aggregate notional amount of derivatives	$150.90
Cumulative net gain reported as a component of other assets	-645,000
Interest rate lock commitments [Member]
Derivative [Line Items]
Aggregate notional amount of derivatives
Cumulative net gain reported as a component of other assets

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale (at fair value)	$125,073,000		$97,021,000
Real Estate Owned, Fair Value Disclosure	18,700,000		22,700,000
Assets measured on recurring basis, unobservable input reconciliation [Roll Forward]
Ending balance	9,000
Loans and Leases Receivable, Impaired, Outstanding Balance	22,500,000		31,500,000
Loans and Leases Receivable, Impaired, Specific Reserve	3,700,000		6,900,000
Real Estate Owned, Change in Fair Value	1,500,000		1,400,000
Mortgage Banking Derivatives [Member]
Assets measured on recurring basis, unobservable input reconciliation [Roll Forward]
Beginning balance	1,189,000		1,419,000
Transfer into level 3	0		0
Mortgage derivative gain, net	-190,000		-230,000
Ending balance	999,000		1,189,000
Impaired Loans, Net [Member]
Assets measured on recurring basis, unobservable input reconciliation [Roll Forward]
Ending balance	18,758,000
Real Estate Owned [Member]
Assets measured on recurring basis, unobservable input reconciliation [Roll Forward]
Ending balance	18,706,000
Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value of MSR Stratification with Impairment	9,000
Mortgage Servicing Rights Fair Value	2,808,000
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage Servicing Rights Fair Value	0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage Servicing Rights Fair Value	0
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage Servicing Rights Fair Value	9,000
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage-backed securities	117,128,000		104,923,000
Collateralized mortgage obligations, Government sponsored enterprise bonds	59,071,000		19,241,000
Government sponsored enterprise bonds	6,711,000		17,934,000
Municipal securities	77,108,000		58,793,000
Other debt securities	7,528,000		5,160,000
Certificates of deposit	5,897,000		7,367,000
Loans held for sale (at fair value)	125,073,000		97,021,000
Mortgage Banking Derivative Assets	1,644,000		1,189,000
Mortgage Banking Derivatives Liabilities	645,000
Impaired Loans, Fair Value Disclosure	18,800,000		24,596,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage-backed securities	0		0
Collateralized mortgage obligations, Government sponsored enterprise bonds	0		0
Government sponsored enterprise bonds	0		0
Municipal securities	0		0
Other debt securities	2,550,000		5,160,000
Certificates of deposit	0		0
Loans held for sale (at fair value)	0		0
Mortgage Banking Derivative Assets	0		0
Mortgage Banking Derivatives Liabilities	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage-backed securities	117,128,000		104,923,000
Collateralized mortgage obligations, Government sponsored enterprise bonds	59,071,000		19,241,000
Government sponsored enterprise bonds	6,711,000		17,934,000
Municipal securities	77,108,000		58,793,000
Other debt securities	4,978,000		0
Certificates of deposit	5,897,000		7,367,000
Loans held for sale (at fair value)	125,073,000		97,021,000
Mortgage Banking Derivative Assets	0		0
Mortgage Banking Derivatives Liabilities	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage-backed securities	0		0
Collateralized mortgage obligations, Government sponsored enterprise bonds	0		0
Government sponsored enterprise bonds	0		0
Municipal securities	0		0
Other debt securities	0		0
Certificates of deposit	0		0
Loans held for sale (at fair value)	0		0
Mortgage Banking Derivative Assets	1,644,000		1,189,000
Mortgage Banking Derivatives Liabilities	645,000
Fair Value, Measurements, Nonrecurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired Loans, Fair Value Disclosure	18,758,000	[1]	24,596,000	[1]
Real Estate Owned, Fair Value Disclosure	18,706,000		22,663,000
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired Loans, Fair Value Disclosure	0	[1]	0	[1]
Real Estate Owned, Fair Value Disclosure	0		0
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired Loans, Fair Value Disclosure	0	[1]	0	[1]
Real Estate Owned, Fair Value Disclosure	0		0
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired Loans, Fair Value Disclosure	18,758,000	[1]	24,596,000	[1]
Real Estate Owned, Fair Value Disclosure	$18,706,000		$22,663,000
[1]	Represents collateral-dependent impaired loans, net, which are included in loans.

Fair_Value_Measurements_Valuat

Fair Value Measurements, Valuation Techniques (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	$9,000
Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rates Applied to Appraisals (in hundredths)	36.30%
Fair Value Inputs, Discount Rate	11.00%
Fair Value Inputs, Cost to Service	828.26
Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rates Applied to Appraisals (in hundredths)	7.00%
Fair Value Inputs, Discount Rate	10.00%
Fair Value Inputs, Cost to Service	71.75
Mortgage Banking Derivatives [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	999,000	1,189,000	1,419,000
Mortgage Banking Derivatives [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Pull Through Rate (in hundredths)	100.00%
Mortgage Banking Derivatives [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Pull Through Rate (in hundredths)	53.10%
Impaired Loans, Net [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	18,758,000
Impaired Loans, Net [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rates Applied to Appraisals (in hundredths)	30.00%
Impaired Loans, Net [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rates Applied to Appraisals (in hundredths)	15.00%
Real Estate Owned [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	$18,706,000
Real Estate Owned [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rates Applied to Appraisals (in hundredths)	89.40%
Real Estate Owned [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rates Applied to Appraisals (in hundredths)	0.00%

Fair_Value_Measurements_by_Bal

Fair Value Measurements, by Balance Sheet Grouping (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Assets
Securities available for sale	$273,443	$213,418
Loans held for sale (at fair value)	125,073	97,021
Real estate owned	18,700	22,700
Estimate of Fair Value, Fair Value Disclosure [Member]
Assets
Mortgage Servicing Rights Fair Value	2,808
Fair Value, Inputs, Level 1 [Member]
Assets
Mortgage Servicing Rights Fair Value	0
Fair Value, Inputs, Level 2 [Member]
Assets
Mortgage Servicing Rights Fair Value	0
Fair Value, Inputs, Level 3 [Member]
Assets
Mortgage Servicing Rights Fair Value	9
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Assets
Cash and cash equivalents	172,820	429,169
Securities available for sale	273,443	213,418
Loans held for sale (at fair value)	125,073	97,021
Loans receivable, net	1,094,990	1,092,676
FHLB stock	17,500	17,500
Accrued interest receivable	4,029	3,804
Mortgage Servicing Rights Fair Value	2,511	3,377
Mortgage banking derivative assets	1,644	1,189
Liabilities:
Deposits	863,960	1,244,741
Advance payments by borrowers for taxes	4,991	2,482
Borrowings	434,000	455,197
Accrued interest payable	1,600	1,595
Mortgage banking derivative liabilities	645	0
Estimate of Fair Value, Fair Value Disclosure [Member]
Assets
Cash and cash equivalents	172,820	429,169
Securities available for sale	273,443	213,418
Loans held for sale (at fair value)	125,073	97,021
Loans receivable, net	1,184,398	1,117,959
FHLB stock	17,500	17,500
Accrued interest receivable	4,029	3,804
Mortgage Servicing Rights Fair Value		5,829
Mortgage banking derivative assets	1,644	1,189
Liabilities:
Deposits	866,173	1,246,541
Advance payments by borrowers for taxes	4,991	2,482
Borrowings	459,484	491,053
Accrued interest payable	1,600	1,595
Mortgage banking derivative liabilities	645	0
Estimate of Fair Value, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 1 [Member]
Assets
Cash and cash equivalents	167,370	429,169
Securities available for sale	2,550	5,160
Loans held for sale (at fair value)	0	0
Loans receivable, net	0	0
FHLB stock	0	0
Accrued interest receivable	4,029	3,804
Mortgage Servicing Rights Fair Value		0
Mortgage banking derivative assets	0	0
Liabilities:
Deposits	211,325	606,991
Advance payments by borrowers for taxes	4,991	2,482
Borrowings	0	21,197
Accrued interest payable	1,600	1,595
Mortgage banking derivative liabilities	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 2 [Member]
Assets
Cash and cash equivalents	5,450	0
Securities available for sale	270,893	208,258
Loans held for sale (at fair value)	125,073	97,021
Loans receivable, net	0	0
FHLB stock	17,500	17,500
Accrued interest receivable	0	0
Mortgage Servicing Rights Fair Value		0
Mortgage banking derivative assets	0	0
Liabilities:
Deposits	654,848	639,550
Advance payments by borrowers for taxes	0	0
Borrowings	459,484	469,856
Accrued interest payable	0	0
Mortgage banking derivative liabilities	0	0
Estimate of Fair Value, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 3 [Member]
Assets
Cash and cash equivalents	0	0
Securities available for sale	0	0
Loans held for sale (at fair value)	0	0
Loans receivable, net	1,184,398	1,117,959
FHLB stock	0	0
Accrued interest receivable	0	0
Mortgage Servicing Rights Fair Value	2,808	5,829
Mortgage banking derivative assets	1,644	1,189
Liabilities:
Deposits	0	0
Advance payments by borrowers for taxes	0	0
Borrowings	0	0
Accrued interest payable	0	0
Mortgage banking derivative liabilities	$645	$0

Earnings_loss_per_share_Detail

Earnings (loss) per share (Details) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Basic and diluted earnings per share calculations [Abstract]
Net income (loss)	$12,732	$14,708	$34,914
Net Income available to unvested restricted stockholders	19	38	113
Net Income (Loss) available to common stockholders	$12,713	$14,670	$34,801
Weighted average shares outstanding (in shares)	33,406,000	34,185,000	34,076,000
Effect of dilutive potential common shares (in shares)	237,000	254,000	118,000
Diluted weighted average shares outstanding (in shares)	33,643,000	34,439,000	34,194,000
Basic loss per share (in dollars per share)	$0.38	$0.43	$1.02
Diluted loss per share (in dollars per share)	$0.38	$0.43	$1.02
Nonvested Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	237,421	228,238	302,854
Nonvested Restricted Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	49,380	87,784	110,827

Condensed_Parent_Company_Only_2

Condensed Parent Company Only Statements (Details) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Assets
Cash and cash equivalents	$172,820	$429,169
Securities available for sale (at fair value)	273,443	213,418
Total assets	1,783,380	1,947,039	1,661,076
Liabilities [Abstract]
Other liabilities	30,192	30,147
Shareholders' equity [Abstract]
Preferred Stock (par value $.01 per share) Authorized - 50,000,000 shares in 2014 and 20,000,000 in 2013, no shares issued	0	0
Common stock (par value $.01 per share), Authorized - 100,000,000 shares in 2014 and 200,000,000 in 2013, Issued - 34,420,094 in 2014 and 34,073,670 in 2013, Outstanding - 34,420,094 in 2014 and 31,349,317 in 2013	344	341
Additional paid-in-capital	313,894	110,480
Retained earnings	157,304	151,195
Unearned ESOP shares	-22,552	-854
Treasury stock (0 in 2014 and 2,724,353 in 2013), at cost	0	-45,261
Accumulated other comprehensive income (net of taxes)	1,247	-1,429
Total shareholders' equity	450,237	214,472	202,634	166,372
Total liabilities and shareholders' equity	1,783,380	1,947,039
Preferred stock - par value (in dollars per share)	$0.01	$0.01
Preferred stock - shares authorized (in shares)	50,000,000	20,000,000
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	200,000,000
Common stock - shares issued (in shares)	34,420,094	34,073,670
Common stock - shares outstanding (in shares)	34,420,094	31,349,317
Treasury shares (in shares)	0	2,724,353
Statements of Operations [Abstract]
Interest income	63,634	62,864	69,846
Total income (loss)	41,307	39,206	41,945
Compensation	69,172	68,807	63,507
Professional fees	2,393	2,386	2,109
Other expense	12,123	10,871	11,971
Total expense	104,818	99,144	102,138
Income (loss) before income tax	19,907	23,329	22,710
Income tax benefit	7,175	8,621	-12,204
Net income (loss)	12,732	14,708	34,914
Cash flows from operating activities [Abstract]
Net income (loss)	12,732	14,708	34,914
Adjustments to reconcile net loss to net cash provided by operating activities [Abstract]
Amortization of unearned ESOP shares	1,217	718	306
Stock based compensation	109	126	145
Deferred income taxes	3,716	5,394	-16,895
Change in other assets and liabilities	6,925	-1,173	-3,352
Net cash (used in) provided by operating activities	-2,216	52,284	-8,137
Cash flows from investing activities [Abstract]
Proceeds from Sale of Available-for-sale Securities, Debt	0	921	11,798
Net cash used in investing activities	-75,248	24,069	91,525
Financing for cash dividends on common stock	-5,003	0	0
Financing for purchase of ESOP	-22,884	0	0
Proceeds from stock option exercises	49	0	0
Proceeds of stock offering	248,348
Net cash provided by (used in) financing activities	-178,885	281,347	-92,299
Net increase (decrease) in cash	-256,349	357,700	-8,911
Cash and cash equivalents at beginning of year	429,169	71,469	80,380
Cash and cash equivalents at end of year	172,820	429,169	71,469
Parent Company [Member]
Assets
Cash and cash equivalents	101,637	349
Securities available for sale (at fair value)	2,550	5,160
Investment in subsidiaries	345,234	205,776
Other assets	2,596	3,276
Total assets	452,017	214,561
Liabilities [Abstract]
Other liabilities	1,780	89
Shareholders' equity [Abstract]
Preferred Stock (par value $.01 per share) Authorized - 50,000,000 shares in 2014 and 20,000,000 in 2013, no shares issued	0	0
Common stock (par value $.01 per share), Authorized - 100,000,000 shares in 2014 and 200,000,000 in 2013, Issued - 34,420,094 in 2014 and 34,073,670 in 2013, Outstanding - 34,420,094 in 2014 and 31,349,317 in 2013	344	341
Additional paid-in-capital	313,894	110,480
Retained earnings	157,304	151,195
Unearned ESOP shares	-22,552	-854
Treasury stock (0 in 2014 and 2,724,353 in 2013), at cost	0	-45,261
Accumulated other comprehensive income (net of taxes)	1,247	-1,429
Total shareholders' equity	450,237	214,472
Total liabilities and shareholders' equity	452,017	214,561
Preferred stock - par value (in dollars per share)	$0.01	$0.01
Preferred stock - shares authorized (in shares)	50,000,000	20,000,000
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	200,000,000
Common stock - shares issued (in shares)	34,420,094	34,073,670
Common stock - shares outstanding (in shares)	34,420,094	31,349,317
Treasury shares (in shares)	0	2,724,353
Statements of Operations [Abstract]
Interest income	1,078	586	644
Equity in loss of subsidiaries	12,431	14,468	33,448
Total income (loss)	13,509	15,054	34,092
Compensation	52	-118	-523
Professional fees	2	16	3
Other expense	370	287	279
Total expense	424	185	-241
Income (loss) before income tax	13,085	14,869	34,333
Income tax benefit	353	161	-581
Net income (loss)	12,732	14,708	34,914
Cash flows from operating activities [Abstract]
Net income (loss)	12,732	14,708	34,914
Adjustments to reconcile net loss to net cash provided by operating activities [Abstract]
Amortization of unearned ESOP shares	1,217	718	306
Stock based compensation	109	126	145
Deferred income taxes	80	-21	-954
Equity in (earnings) loss of subsidiaries	-12,431	-14,468	-33,448
Change in other assets and liabilities	599	-1,051	-1,147
Net cash (used in) provided by operating activities	2,306	12	-184
Cash flows from investing activities [Abstract]
Capital contributions to subsidiary	-124,211	0	0
Proceeds from Sale of Available-for-sale Securities, Debt	2,609	0	0
Net cash used in investing activities	-121,602	0	0
Financing for cash dividends on common stock	-5,003	0	0
Financing for purchase of ESOP	-22,884	0	0
Proceeds from stock option exercises	49	0	0
Proceeds of stock offering	248,422	0	0
Net cash provided by (used in) financing activities	220,584	0	0
Net increase (decrease) in cash	101,288	12	-184
Cash and cash equivalents at beginning of year	349	337	521
Cash and cash equivalents at end of year	$101,637	$349	$337

Segment_and_Related_Informatio2

Segment and Related Information (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
	Segment
Segments and Related Information [Abstract]
Number of operating segments (in segments)	2
Segment Reporting Information [Line Items]
Net interest income	$41,307	$39,206	$41,945
Provision for loan losses	1,150	4,532	8,300
Net interest income after provision for loan losses	40,157	34,674	33,645
Noninterest income	84,568	87,799	91,203
Noninterest expenses [Abstract]
Compensation, payroll taxes, and other employee benefits	69,172	68,807	63,507
Occupancy, office furniture and equipment	10,369	8,165	6,968
FDIC insurance premiums	1,395	1,986	3,390
Real estate owned	2,482	255	8,746
Other	21,400	19,931	19,527
Total noninterest expenses	104,818	99,144	102,138
Income (loss) before income tax	19,907	23,329	22,710
Income tax expense (benefit)	7,175	8,621	-12,204
Net income (loss)	12,732	14,708	34,914
Total Assets	1,783,380	1,947,039	1,661,076
Mortgage Banking [Member]
Segment Reporting Information [Line Items]
Net interest income	1,051	557	470
Provision for loan losses	400	60	50
Net interest income after provision for loan losses	651	497	420
Noninterest income	81,710	84,879	87,944
Noninterest expenses [Abstract]
Compensation, payroll taxes, and other employee benefits	54,626	55,484	50,748
Occupancy, office furniture and equipment	7,019	5,194	3,856
FDIC insurance premiums	0	0	0
Real estate owned	9	0	0
Other	16,616	15,565	14,517
Total noninterest expenses	78,270	76,243	69,121
Income (loss) before income tax	4,091	9,133	19,243
Income tax expense (benefit)	1,649	3,682	7,724
Net income (loss)	2,442	5,451	11,519
Total Assets	145,980	119,401	147,699
Community Banking [Member]
Segment Reporting Information [Line Items]
Net interest income	39,591	38,148	40,973
Provision for loan losses	750	4,472	8,250
Net interest income after provision for loan losses	38,841	33,676	32,723
Noninterest income	3,264	3,134	3,259
Noninterest expenses [Abstract]
Compensation, payroll taxes, and other employee benefits	14,915	13,526	13,424
Occupancy, office furniture and equipment	3,350	3,052	3,112
FDIC insurance premiums	1,395	1,986	3,390
Real estate owned	2,473	255	8,746
Other	4,819	4,197	4,728
Total noninterest expenses	26,952	23,016	33,400
Income (loss) before income tax	15,153	13,794	2,582
Income tax expense (benefit)	5,173	4,777	-19,347
Net income (loss)	9,980	9,017	21,929
Total Assets	1,758,707	1,895,833	1,589,314
Holding Company and Other [Member]
Segment Reporting Information [Line Items]
Net interest income	665	501	502
Provision for loan losses	0	0	0
Net interest income after provision for loan losses	665	501	502
Noninterest income	-406	-214	0
Noninterest expenses [Abstract]
Compensation, payroll taxes, and other employee benefits	-369	-203	-665
Occupancy, office furniture and equipment	0	-81	0
FDIC insurance premiums	0	0	0
Real estate owned	0	0	0
Other	-35	169	282
Total noninterest expenses	-404	-115	-383
Income (loss) before income tax	663	402	885
Income tax expense (benefit)	353	162	-581
Net income (loss)	310	240	1,466
Total Assets	($121,307)	($68,195)	($75,937)