2.4.0.8031 - Disclosure - Summary of Significant Accounting Policies (Policies)truefalsefalse1false falsefalseContext_3ME_31-Mar-2013http://www.sec.gov/CIK0001569994duration2013-01-01T00:00:002013-03-31T00:00:002false falsefalseContext_FYE_31-Dec-2012http://www.sec.gov/CIK0001569994duration2012-01-01T00:00:002012-12-31T00:00:001true 1us-gaap_AccountingPoliciesAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Summary Of Significant Accounting Policies [Abstract]2false 2us-gaap_BasisOfAccountingPolicyPolicyTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00<div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">The accompanying unaudited consolidated financial statements have been prepared in accordance with generally accepted accounting principles ("GAAP") for interim financial information, Rule 10-01 of Regulation S-X and the instructions to Form 10-Q. The financial statements do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, the accompanying unaudited consolidated financial statements contain all adjustments (consisting of normal recurring accruals) necessary to present fairly the financial position, results of operations, changes in shareholders' equity, and cash flows of the Company for the periods presented.</font></div> </div>falsefalsefalse2falsefalsefalse00falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy for basis of accounting, or basis of presentation, used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS).No definition available.false0Basis of presentation3false 2wsbf_OrganizationPolicyTextBlockwsbf_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00<div><div> <table style="width: 100%; font-family: 'times new roman', times, serif; font-size: 10pt; margin-bottom: 7pt;" class="dspflisttable" cellspacing="0" cellpadding="0"> <tr> <td style="width: 36pt; vertical-align: top; align: right;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; margin-left: 18pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;" size="2">a)</font></div> </td> <td style="width: auto; vertical-align: top;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;" size="2">Organization</font></div> </td> </tr> </table> </div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">The board of directors of WaterStone Bank (the Bank) adopted the Plan of Reorganization and related Stock Issuance Plan on May 17, 2005, as amended on June 3, 2005, under which Waterstone Financial, Inc. (the Company) was formed to become the mid-tier holding company for the Bank. In addition, Lamplighter Financial, MHC, a Federally-chartered mutual holding company, was formed to become the majority owner of Waterstone Financial, Inc. The Company's outstanding common shares are 73.5% owned by Lamplighter Financial, MHC at December 31, 2012.</font></div> </div>falsefalsefalsenonnum:textBlockItemTypenaPolicy regarding organization structure of the company, percentage of common share held and about the subsidiary.No definition available.false0Organization4false 2wsbf_NatureOfOperationsPolicyTextBlockwsbf_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00<div><div> <table style="width: 100%; font-family: 'times new roman', times, serif; font-size: 10pt; margin-bottom: 7pt;" class="dspflisttable" cellspacing="0" cellpadding="0"> <tr> <td style="width: 36pt; vertical-align: top; align: right;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; margin-left: 18pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;" size="2">b)</font></div> </td> <td style="width: auto; vertical-align: top;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;" size="2">Nature of Operations</font></div> </td> </tr> </table> </div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">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.</font></div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">The Bank provides a full range of financial services to customers through branch locations in southeastern Wisconsin. The Bank is subject to the regulations of certain federal and state agencies and undergoes periodic examinations by those regulatory authorities.</font></div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">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.</font></div> </div>falsefalsefalsenonnum:textBlockItemTypenaThe entire policy for the nature of an entity's business, the major products or services it sells or provides and its principal markets, including the locations of those markets. If the entity operates in more than one business, the disclosure also indicates the relative importance of its operations in each business and the basis for the determination (for example, assets, revenues, or earnings).No definition available.false0Nature of Operations5false 2us-gaap_ConsolidationPolicyTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00<div><div> <table style="width: 100%; font-family: 'times new roman', times, serif; font-size: 10pt; margin-bottom: 7pt;" class="dspflisttable" cellspacing="0" cellpadding="0"> <tr> <td style="width: 36pt; vertical-align: top; align: right;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; margin-left: 18pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;" size="2">c)</font></div> </td> <td style="width: auto; vertical-align: top;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;" size="2">Principles of Consolidation</font></div> </td> </tr> </table> </div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">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. and Waterstone Mortgage Corporation. All significant intercompany accounts and transactions have been eliminated in consolidation.</font></div> </div>falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy regarding (1) the principles it follows in consolidating or combining the separate financial statements, including the principles followed in determining the inclusion or exclusion of subsidiaries or other entities in the consolidated or combined financial statements and (2) its treatment of interests (for example, common stock, a partnership interest or other means of exerting influence) in other entities, for example consolidation or use of the equity or cost methods of accounting. The accounting policy may also address the accounting treatment for intercompany accounts and transactions, noncontrolling interest, and the income statement treatment in consolidation for issuances of stock by a subsidiary.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 97-2 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 46R -Paragraph 4 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph k -Article 1 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 18 -Paragraph 5, 6, 16-19 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 140 -Paragraph 46 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 46R -Paragraph 4 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02, 03 -Article 3A Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 96-16 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 18 -Paragraph 20 -Subparagraph a(2) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 46R -Paragraph 14, 15 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2197480 Reference 13: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=18733093&loc=d3e5614-111684 Reference 14: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.3A-02) -URI http://asc.fasb.org/extlink&oid=6959686&loc=d3e355033-122828 Reference 15: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 2-6 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 16: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 40 -Section 45 -URI http://asc.fasb.org/section&trid=2197723 Reference 17: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2196966 Reference 18: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 325 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=2197087 Reference 19: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=16385135&loc=d3e33801-111570 false0Principles of Consolidation6false 2us-gaap_UseOfEstimatesus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00<div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">The preparation of the unaudited consolidated financial statements requires management of the Company to make a number of estimates and assumptions relating to the reported amount of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the period.  Significant items subject to such estimates and assumptions include the allowance for loan losses, deferred income taxes and real estate owned.  Actual results could differ from those estimates.</font></div> </div>falsefalsefalse2falsefalsefalse00<div> <div> <table style="width: 100%; font-family: 'times new roman', times, serif; font-size: 10pt; margin-bottom: 7pt;" class="dspflisttable" cellspacing="0" cellpadding="0"> <tr> <td style="width: 36pt; vertical-align: top; align: right;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; margin-left: 18pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times; ; font-family: times new roman,times;" size="2">d)</font></div> </td> <td style="width: auto; vertical-align: top;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times; ; font-family: times new roman,times;" size="2">Use of Estimates</font></div> </td> </tr> </table> </div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times; ; font-family: times new roman,times;" size="2">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, deferred income taxes, valuation of investments, evaluation of other than temporary impairment on investments and valuation of real estate owned. Actual results could differ from those estimates and the current economic environment has increased the degree of uncertainty inherent in those estimates and assumptions.</font></div></div>falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy for the use of estimates in the preparation of financial statements in conformity with generally accepted accounting principles.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6143-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6132-108592 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6061-108592 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 94-6 -Paragraph 11, 14 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false0Use of Estimates7false 2us-gaap_CashAndCashEquivalentsPolicyTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00<div><div> <table style="width: 100%; font-family: 'times new roman', times, serif; font-size: 10pt; margin-bottom: 7pt;" class="dspflisttable" cellspacing="0" cellpadding="0"> <tr> <td style="width: 36pt; vertical-align: top; align: right;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; margin-left: 18pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;" size="2">e)</font></div> </td> <td style="width: auto; vertical-align: top;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;" size="2">Cash and Cash Equivalents</font></div> </td> </tr> </table> </div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">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.</font></div> </div>falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy for cash and cash equivalents, including the policy for determining which items are treated as cash equivalents. Other information that may be disclosed includes (1) the nature of any restrictions on the entity's use of its cash and cash equivalents, (2) whether the entity's cash and cash equivalents are insured or expose the entity to credit risk, (3) the classification of any negative balance accounts (overdrafts), and (4) the carrying basis of cash equivalents (for example, at cost) and whether the carrying amount of cash equivalents approximates fair value.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4273-108586 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 305 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2122427 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Financial Reporting Release (FRR) -Number 203 -Paragraph 02-03 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Technical Practice Aid (TPA) -Number 2110 -Paragraph 6 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7, 8, 9, 10 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false0Cash and Cash Equivalents8false 2us-gaap_MarketableSecuritiesPolicyus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00<div><div> <table style="width: 100%; font-family: 'times new roman', times, serif; margin-bottom: 7pt; font-size: 10pt;" class="dspflisttable" cellspacing="0" cellpadding="0"> <tr> <td style="width: 36pt; vertical-align: top; align: right;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; margin-left: 18pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;" size="2">f)</font></div> </td> <td style="width: auto; vertical-align: top;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;" size="2">Securities</font></div> </td> </tr> </table> </div> <div style="text-align: justify; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">Available for Sale Securities</font></div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">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.  <font style="font-family: ''times new roman'', times, serif; font-size: 10pt;">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.</font></font></div><div style="text-align: justify; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">Held to Maturity Securities</font></div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">Debt securities that the Company has the intent and ability to hold to maturity have been designated as held to maturity.  Such securities are stated at amortized cost.</font></div> <div style="text-align: justify; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">Other Than Temporary Impairment</font></div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">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 subjective to significant change.</font></div><div style="text-align: justify; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">Federal Home Loan Bank Stock</font></div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">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.</font></div> </div>falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy for investments in debt and equity securities that have readily determinable fair values (marketable securities). At a minimum, the disclosure might address accounting policies for investments classified as trading, available for sale, or held to maturity and may include how the entity determines whether impairments of available for sale or held to maturity investments are other than temporary, how the fair values of the entity's securities are determined, and the entity's accounting treatment for transfers between investment categories.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2196929 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section M Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 2, 12 -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 7-16 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 107 -Paragraph 10, 11 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 7, 8, 9, 13, 14, 15, 16, 17 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62652-112803 false0Securities9false 2us-gaap_MarketableSecuritiesAvailableForSaleSecuritiesPolicyus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00<div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">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.  For certain securities in unrealized loss positions, the Company prepares cash flow analyses to compare the present value of cash flows expected to be collected from the security with the amortized cost basis of the security.</font></div></div>falsefalsefalse2falsefalsefalse00<div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 27pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">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.  For certain securities in unrealized loss positions, the Company prepares cash flow analyses to compare the present value of cash flows expected to be collected from the security with the amortized cost basis of the security.</font></div></div>falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy for investments in debt and equity securities that are classified as available-for-sale. This policy also may describe the entity's accounting treatment for transfers between investment categories, how the entity determines whether impairments of available-for-sale securities are other than temporary, and how the fair values of such securities are determined.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2196929 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section M Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 2, 12 -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 107 -Paragraph 10, 11 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 12, 13, 14, 15, 16 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 7, 8, 9, 13, 14, 15, 16, 17 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false0Impairment of investment securities10false 2us-gaap_FinanceLoanAndLeaseReceivablesHeldForSalePolicyus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00<div><div> <table style="width: 100%; font-family: 'times new roman', times, serif; font-size: 10pt; margin-bottom: 7pt;" class="dspflisttable" cellspacing="0" cellpadding="0"> <tr> <td style="width: 36pt; vertical-align: top; align: right;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; margin-left: 18pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;">g)</font></div> </td> <td style="width: auto; vertical-align: top;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;">Loans Held for Sale</font></div> </td> </tr> </table> </div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;">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. Gains and losses on the sales of these loans are determined using the specific identification method. The Company generally sells mortgage loans in the secondary market on a servicing released basis, however, servicing is retained when economic conditions so warrant. Mortgage loans originated for sale are generally sold within 45 days after closing.</font></div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;">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.  The carrying value of loans held for sale included a market valuation adjustment of $6.0 million at December 31, 2012 and $3.2 million at December 31, 2011.  </font></div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;">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 73% of total mortgage banking noninterest expense.</font></div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;">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.</font></div> </div>falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy for those finance, loan and lease receivables classified as held for sale. This disclosure may include how the entity determines when to classify a loan or receivable as held for sale, the basis at which such receivables are carried in the entity's statements of financial position, how such receivables are valued, the method used to determine the lower of cost or fair value (that is, on an aggregate or individual asset basis), the treatment of commitment and other fees and origination costs, and how transfers to and from the held for investment portfolio are accounted for.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5144-111524 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 65 -Paragraph 21 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 01-6 -Paragraph 13 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5093-111524 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6378556&loc=d3e10133-111534 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5033-111524 false0Loans Held for Sale11false 2wsbf_LoansAndLeasesReceivableLeaseFinancingAndRelatedInterestIncomePolicyPolicyTextBlockwsbf_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00<div><div> <table style="width: 100%; font-family: 'times new roman', times, serif; margin-bottom: 7pt; font-size: 10pt;" class="dspflisttable" cellspacing="0" cellpadding="0"> <tr> <td style="width: 36pt; vertical-align: top; align: right;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; margin-left: 18pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;" size="2">h)</font></div> </td> <td style="width: auto; vertical-align: top;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;" size="2">Loans Receivable and Related Interest Income</font></div> </td> </tr> </table> </div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">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.</font></div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">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 collectibility of the total contractual principal and interest is no longer in doubt.</font></div><div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">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 returns to its original contractual terms and a positive payment history is established.</font></div></div>falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy for recording, valuing, and reporting amounts due from lessees pursuant to contractual arrangements, which are secured, at a minimum, by the asset being rented, and related interest income.No definition available.false0Loans Receivable and Related Interest Income12false 2us-gaap_LoansAndLeasesReceivableAllowanceForLoanLossesPolicyus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00<div><div> <table style="width: 100%; font-family: 'times new roman', times, serif; margin-bottom: 7pt; font-size: 10pt;" class="dspflisttable" cellspacing="0" cellpadding="0"> <tr> <td style="width: 36pt; vertical-align: top; align: right;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; margin-left: 18pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;" size="2">i)</font></div> </td> <td style="width: auto; vertical-align: top;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;" size="2">Allowance for Loan Losses</font></div> </td> </tr> </table> </div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">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.</font></div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">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.</font></div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">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.</font></div><div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2"> 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.</font></div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">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.</font></div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">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.</font></div> </div>falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy for estimating the allowance for losses on loans and lease receivables. The disclosure may include (a) how the entity determines each element of the allowance, (b) which loans are evaluated individually and which loans are evaluated as a group, (c) how the entity determines both the allocated and unallocated portions of the allowance, (d) how the entity determines the loss factors applied to graded loans in order to develop a general allowance, and (e) what self-correcting mechanism the entity uses to reduce differences between estimated and actual losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5144-111524 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 9 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false0Allowance for Loan Losses13false 2us-gaap_RealEstateOwnedValuationAllowancePolicyus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00<div><div> <table style="width: 100%; font-family: 'times new roman', times, serif; margin-bottom: 7pt; font-size: 10pt;" class="dspflisttable" cellspacing="0" cellpadding="0"> <tr> <td style="width: 36pt; vertical-align: top; align: right;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; margin-left: 18pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;" size="2">j)</font></div> </td> <td style="width: auto; vertical-align: top;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;" size="2">Real Estate Owned</font></div> </td> </tr> </table> </div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">Real estate owned consists of properties acquired through, or in lieu of, loan foreclosure.  Real estate owned is transferred into the portfolio at the lower of estimated fair value less anticipated selling costs based upon the property's appraised value at the date of transfer or the net carrying value of the loan.  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.  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.</font></div></div>falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy for establishing and maintaining the valuation allowance related to real estate owned.No definition available.false0Real Estate Owned14false 2wsbf_MortgageServicingRightsPolicyTextBlockwsbf_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00<p style="font: /normal 'times new roman'; margin: 0in 0in 0pt 0.5in; color: #000000; text-transform: none; text-indent: -0.25in; letter-spacing: normal; word-spacing: 0px; white-space: normal; -webkit-text-stroke-width: 0px;"><font style="font-family: times new roman,times;"><b><i><font style="font-size: 10pt; font-style: italic; font-weight: bold;">k)</font></i></b><b><i><font style="font-size: 3pt; font-style: italic; font-weight: bold;" size="1">             </font></i></b><b><i><font style="font-size: 10pt; font-style: italic; font-weight: bold;">Mortgage Servicing Rights</font></i></b></font></p><p style="font: /normal 'times new roman'; margin: 0in 0in 0pt 0.5in; color: #000000; text-transform: none; text-indent: -0.25in; letter-spacing: normal; word-spacing: 0px; white-space: normal; -webkit-text-stroke-width: 0px;"><font style="font-size: 10pt; ; font-family: times new roman,times;"> </font></p> <p style="font: /normal 'times new roman'; margin: 0in 0in 0pt 0.5in; color: #000000; text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; white-space: normal; -webkit-text-stroke-width: 0px;"><font style="font-size: 10pt; ; font-family: times new roman,times;">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.</font></p>falsefalsefalsenonnum:textBlockItemTypenaRepresents the entire policy disclosure related to mortgage servicing rights.No definition available.false0Mortgage Servicing Rights15false 2wsbf_CashSurrenderValueOfLifeInsurancePolicyTextBlockwsbf_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00<div><div> <table style="width: 100%; font-family: 'times new roman', times, serif; margin-bottom: 7pt; font-size: 10pt;" class="dspflisttable" cellspacing="0" cellpadding="0"> <tr> <td style="width: 36pt; vertical-align: top; align: right;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; margin-left: 18pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;" size="2">l)</font></div> </td> <td style="width: auto; vertical-align: top;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;" size="2">Cash Surrender Value of Life Insurance</font></div> </td> </tr> </table> </div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">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.</font></div> </div>falsefalsefalsenonnum:textBlockItemTypenaThe entire policy specifies about cash surrender value of life insurance which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity.No definition available.false0Cash Surrender Value of Life Insurance16false 2us-gaap_PropertyPlantAndEquipmentPolicyTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00<div><div> <table style="width: 100%; font-family: 'times new roman', times, serif; margin-bottom: 7pt; font-size: 10pt;" class="dspflisttable" cellspacing="0" cellpadding="0"> <tr> <td style="width: 36pt; vertical-align: top; align: right;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; margin-left: 18pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;" size="2">m)</font></div> </td> <td style="width: auto; vertical-align: top;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;" size="2">Office Properties and Equipment</font></div> </td> </tr> </table> </div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">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, three to 10 years for equipment, and three years for software. Rent expense related to long-term operating leases is recorded on the accrual basis.</font></div> </div>falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy for property, plant and equipment which may include the basis of such assets, depreciation methods used and estimated useful lives, the entity's capitalization policy, including its accounting treatment for costs incurred for repairs and maintenance activities, whether such asset balances include capitalized interest and the method by which such is calculated, how disposals of such assets are accounted for and how impairment of such assets is assessed and recognized.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2155824 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 22 -Paragraph 12, 13 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Section C -Paragraph 5 -Chapter 9 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 7 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph a -Article 5 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 34 -Paragraph 8, 9 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false0Office Properties and Equipment17false 2us-gaap_IncomeTaxPolicyTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00<div><div> <table style="width: 100%; font-family: 'times new roman', times, serif; margin-bottom: 7pt; font-size: 10pt;" class="dspflisttable" cellspacing="0" cellpadding="0"> <tr> <td style="width: 36pt; vertical-align: top; align: right;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; margin-left: 18pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;" size="2">n)</font></div> </td> <td style="width: auto; vertical-align: top;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;" size="2">Income Taxes</font></div> </td> </tr> </table> </div> <div style="background-color: #ffffff;"> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2"><font style="font-family: ''times new roman'', times, serif; font-size: 10pt;">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 fowards.  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. </font> </font></div><div> </div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">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.</font></div> <div> </div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">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.</font></div> </div> </div>falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 4 -Paragraph 11 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 20 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=21917399&loc=d3e32247-109318 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32840-109319 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 30 -URI http://asc.fasb.org/subtopic&trid=2144749 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 954 -SubTopic 740 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6491622&loc=d3e9504-115650 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2144681 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 17 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32809-109319 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=21917399&loc=d3e32280-109318 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 6-34, 43, 47, 49 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false0Income Taxes18false 2us-gaap_EarningsPerSharePolicyTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00<div><div> <table style="width: 100%; font-family: 'times new roman', times, serif; margin-bottom: 7pt; font-size: 10pt;" class="dspflisttable" cellspacing="0" cellpadding="0"> <tr> <td style="width: 36pt; vertical-align: top; align: right;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; margin-left: 18pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;" size="2">o)</font></div> </td> <td style="width: auto; vertical-align: top;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;" size="2">Earnings Per Share</font></div> </td> </tr> </table> </div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">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 or converted into common stock.  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.</font></div></div>falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy for computing basic and diluted earnings or loss per share for each class of common stock and participating security. Addresses all significant policy factors, including any antidilutive items that have been excluded from the computation and takes into account stock dividends, splits and reverse splits that occur after the balance sheet date of the latest reporting period but before the issuance of the financial statements.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2144384 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3630-109257 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 6, 8-16, 60 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false0Earnings Per Share19false 2us-gaap_ComprehensiveIncomePolicyPolicyTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00<div><div> <table style="width: 100%; font-family: 'times new roman', times, serif; margin-bottom: 7pt; font-size: 10pt;" class="dspflisttable" cellspacing="0" cellpadding="0"> <tr> <td style="width: 36pt; vertical-align: top; align: right;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; margin-left: 18pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;" size="2">p)</font></div> </td> <td style="width: auto; vertical-align: top;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;" size="2">Comprehensive Income</font></div> </td> </tr> </table> </div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">Comprehensive income is the total of reported net income and changes in unrealized gains or losses, net of tax, on securities available for sale.</font></div> </div>falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy for comprehensive income.No definition available.false0Other Comprehensive Income20false 2us-gaap_EmployeeStockOwnershipPlanESOPPolicyus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00<div><div> <table style="width: 100%; font-family: 'times new roman', times, serif; margin-bottom: 7pt; font-size: 10pt;" class="dspflisttable" cellspacing="0" cellpadding="0"> <tr> <td style="width: 36pt; vertical-align: top; align: right;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; margin-left: 18pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;" size="2">q)</font></div> </td> <td style="width: auto; vertical-align: top;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;" size="2">Employee Stock Ownership Plan (ESOP)</font></div> </td> </tr> </table> </div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-bottom: 10pt; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">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.</font></div> </div>falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy for ESOP transactions, including the method of measuring compensation, the classification of dividends on ESOP shares, and the treatment of ESOP shares for EPS computations. If the employer has both old ESOP shares for which it does not adopt new guidance and new ESOP shares for which new guidance is required, these disclosures are required for both blocks of shares.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 93-6 -Paragraph 53 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false0Employee Stock Ownership Plan (ESOP)21false 2us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00<div><div> <table style="width: 100%; font-family: 'times new roman', times, serif; margin-bottom: 7pt; font-size: 10pt;" class="dspflisttable" cellspacing="0" cellpadding="0"> <tr> <td style="width: 36pt; vertical-align: top; align: right;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; margin-left: 18pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;" size="2">r)</font></div> </td> <td style="width: auto; vertical-align: top;"> <div style="text-align: left; font-style: italic; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;" size="2">Impact of Recent Accounting Pronouncements</font></div> </td> </tr> </table> </div> <div> </div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">In June 2011, the FASB issued guidance to improve the comparability, consistency and transparency of financial reporting and to increase the prominence of items reported in other comprehensive income.  The amendments require that all nonowner changes in stockholders' equity be presented either in a single continuous statement of comprehensive income or in two separate but consecutive statements.  The amendments do not change the items that must be reported in other comprehensive income or when an item of other comprehensive income must be reclassified to net income.  The amendments were effective for interim and annual periods beginning after December 15, 2011 with retrospective application.  Subsequently, in December 2011, the FASB decided that the requirement to present items that are reclassified from other comprehensive income to net income alongside their respective components of net income and other comprehensive income will be deferred. Therefore, those requirements will not be effective for public entities for fiscal years and interim periods within those years beginning after December 15, 2011.  The adoption of this accounting standard did not have a material impact on the Company's results of operations, financial position, and liquidity.  See the Consolidated Statement of Comprehensive Income (Loss) for required disclosures.</font></div><div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2"> </font></div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-left: 36pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">In May 2011, the FASB issued guidance on measuring fair value to create common fair value measurement and disclosure requirements in U.S. GAAP and IFRS.  The amendments change the wording used to describe many of the requirements for measuring fair value and for disclosing information about fair value measurements.  The amendments also clarify the Board's intent about the application of existing fair value measurement and disclosure requirements.  The amendments were effective for interim and annual periods beginning after December 15, 2011.  The adoption of this accounting standard did not have a material impact on the Company's results of operations, financial position, and liquidity.  See Note 16 for required disclosures on fair value measurements.</font></div> </div>falsefalsefalsenonnum:textBlockItemTypenaDisclosure of the adoption of new accounting pronouncements that may impact the entity's financial reporting.No definition available.false0Impact of Recent Accounting Pronouncements22false 2us-gaap_DerivativesPolicyTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00<div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">In connection with its mortgage banking activities, the Company enters into derivative financial instruments as part of its strategy to manage its exposure to changes in interest rates.   Mortgage banking derivatives include interest rate lock commitments provided to customers to fund mortgage loans to be sold in the secondary market and forward commitments for the future delivery of such loans to third party investors.  It is the Company's practice to enter into forward commitments for the future delivery of residential mortgage loans when interest rate lock commitments are entered into in order to economically hedge the effect of future changes in interest rates on its commitments to fund the loans as well as on its portfolio of mortgage loans held for sale. The Company's mortgage banking derivatives have not been designated as being in hedge relationships.  These instruments are used to manage the Company's exposure to interest rate movements and other identified risks but do not meet the strict hedge accounting requirements of ASC 815. Changes in the fair value of derivatives not designated in hedging relationships are recorded as a component of mortgage banking income in the Company's consolidated statements of operations. The Company does not use derivatives for speculative purposes.</font></div><div> </div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">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 March 31, 2013, the Company had forward commitments to sell mortgage loans with an aggregate notional amount of approximately $295.0 million and interest rate lock commitments with an aggregate notional amount of approximately $184.0 million.  The fair value of the mortgage derivatives at March 31, 2013 included a gain of $2.4 million on mortgage banking derivative assets and a $124,000 net loss on mortgage banking liabilities that are reported as a component of other asset and other liabilities, respectively on the Company's consolidated statements of financial condition.</font></div><div> </div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">In determining the fair value of its derivative loan commitments, the Company considers the value that would be generated by the loan arising from exercise of the loan commitment when sold in the secondary mortgage market. That value includes the price that the loan is expected to be sold for in the secondary mortgage market.  The fair value of these commitments is recorded on the consolidated statements of financial condition with the changes in fair value recorded as a component of mortgage banking income.</font></div> </div>falsefalsefalse2falsefalsefalse00<div> <div> <div> <table style="width: 100%; font-family: 'times new roman', times, serif; margin-bottom: 7pt; font-size: 10pt;" class="dspflisttable" cellspacing="0" cellpadding="0"> <tr> <td style="width: 18pt; vertical-align: top; align: right;"> <div style="text-align: left; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;" size="2">15)</font></div> </td> <td style="width: auto; vertical-align: top;"> <div style="text-align: left; font-family: ''times new roman'', times, serif; margin-bottom: 7pt; font-size: 10pt; font-weight: bold;"><font style="font-family: times new roman,times;" size="2">Derivative Financial Instruments</font></div> </td> </tr> </table> </div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-left: 27pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">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 in hedge relationships.  These instruments are used to manage the Company's exposure to interest rate movements and other identified risks but do not meet the strict hedge accounting requirements of ASC 815.  Changes in the fair value of derivatives not designated in hedging relationships are recorded directly in earnings.  The Company does not use derivatives for speculative purposes.</font></div><div> </div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-left: 27pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">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, 2012, the Company had forward commitments to sell mortgage loans with an aggregate notional amount of $138.1 million and interest rate lock commitments with an aggregate notional amount of $147.9 million.  The fair value of the mortgage derivatives at December 31, 2012 included a gain of $1.7 million on mortgage banking derivative assets and a $249,000 net loss on mortgage banking liabilities that are reported as a component of other asset and other liabilities, respectively on the Company's consolidated statements of financial condition.</font></div><div> </div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-left: 27pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2">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.</font></div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-left: 27pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2"> </font></div> <div style="text-align: justify; font-family: ''times new roman'', times, serif; margin-left: 27pt; font-size: 10pt;"><font style="font-family: times new roman,times;" size="2"> </font></div> </div> </div>falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy for its derivative instruments and hedging activities.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph n -Article 4 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41620-113959 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579245-113959 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579240-113959 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41638-113959 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(n)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41675-113959 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 39 -Paragraph 10 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false0Derivative financial instrumentsfalseSummary of Significant Accounting Policies (Policies)UnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://wsbonline.com/role/SummaryOfSignificantAccountingPoliciesPolicies222