2.4.0.8067 - Disclosure - Employee Stock Ownership Plan (Details)truefalsefalse1false USDfalsefalse$Context_FYE_31-Dec-2012http://www.sec.gov/CIK0001569994duration2012-01-01T00:00:002012-12-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170sharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0Service_hourStandardhttp://wsbonline.com/20130331Service_hourwsbf0USDUSD$2false USDfalsefalse$Context_FYE_31-Dec-2011http://www.sec.gov/CIK0001569994duration2011-01-01T00:00:002011-12-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170sharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$3false USDfalsefalse$Context_FYE_31-Dec-2010http://www.sec.gov/CIK0001569994duration2010-01-01T00:00:002010-12-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1true 1us-gaap_EmployeeStockOwnershipPlanESOPSharesInESOPAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Employee Stock Ownership Plan [Abstract]2false 2wsbf_MinimumEmployeeAgeRequiredForEmployeeStockOptionPlanwsbf_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse0021 yearsfalsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:durationItemTypenaMinimum age requirement for the employee to able to qualify for employee stock option plan.No definition available.false0Minimum employee age3false 2wsbf_MinimumEmployeeTenurewsbf_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse0012 monthsfalsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:durationItemTypenaMinimum service period required to qualify for employee stock option plan.No definition available.false0Minimum employee tenure4false 2wsbf_MinimumServiceHourRequiredForEmployeeStockOptionPlanwsbf_falsenainstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse10001000falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:integerItemTypeintegerMinimum hours of service required to work to qualify for employee stock option plan.No definition available.false256Minimum service hour required for employee stock option plan (in hours)5false 2us-gaap_EmployeeStockOwnershipPlanESOPDebtStructureDirectLoanAmountus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse85000008500000USD$falsetruefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThe amount reported as a liability as of the balance sheet date by the entity (the employer) of the loan made by a third-party lender directly to the ESOP.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Direct Loan -URI http://asc.fasb.org/extlink&oid=6510849 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 25 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6418455&loc=d3e16545-113920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 93-6 -Paragraph 24, 25 -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. false2Borrowings under stock ownership plan6false 2wsbf_AmountOfShareReleasedwsbf_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00one-tenthfalsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringvalue represents shares which are scheduled to be released annually as shares during period for employee stock option plan.No definition available.false0Amount of share released7false 2wsbf_TenureOfSharesEarnedwsbf_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse0010 yearsfalsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:durationItemTypenaTenure during which shares are earned which are scheduled to be released annually for employee stock option plan.No definition available.false0Tenure of shares earned8false 2us-gaap_EmployeeStockOwnershipPlanESOPCompensationExpenseus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse306000306000falsefalsefalse2truefalsefalse202000202000falsefalsefalse3truefalsefalse264000264000falsefalsefalsexbrli:monetaryItemTypemonetaryThe amount of plan compensation cost recognized during the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 93-6 -Paragraph 53 -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. false2Compensation expense attributed to the ESOP9true 2wsbf_EmployeeStockOwnershipPlanEsopAggregateSharesActivityInEsopAbstractwsbf_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Aggregate activity of unearned ESOP shares [Abstract]10false 3us-gaap_EmployeeStockOwnershipPlanESOPSharesInESOPus-gaap_truenainstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse228453228453falsefalsefalse2truefalsefalse304605304605falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:sharesItemTypesharesSum of the allocated, committed-to-be-released and suspense shares of the entity held by the plan.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 93-6 -Paragraph 53 -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. false1Beginning ESOP shares (in shares)11false 3us-gaap_EmployeeStockOwnershipPlanESOPNumberOfCommittedToBeReleasedSharesus-gaap_truenainstantfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1truefalsefalse-76151-76151falsefalsefalse2truefalsefalse-76152-76152falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:sharesItemTypesharesThe shares that, although not legally released, will be released by a future scheduled and committed debt service payment and will be allocated to employees for service rendered in the current accounting period. The ESOP documents typically define the period of service to which the shares relate. ESOP shares are released to compensate employees directly, to settle employer liabilities for other employee benefits, and to replace dividends on allocated shares that are used for debt service.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 93-6 -Paragraph 53 -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. false1Shares committed to be released (in shares)12false 3us-gaap_EmployeeStockOwnershipPlanESOPNumberOfSuspenseSharesus-gaap_truenainstantfalsefalsefalsefalsefalsefalsefalsefalsetotalLabel1truefalsefalse152302152302falsefalsefalse2truefalsefalse228453228453falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:sharesItemTypesharesShares contributed to the ESOP that have not yet been released, committed to be released, or allocated to participant accounts. Suspense shares generally collateralize ESOP debt.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 93-6 -Paragraph 53 -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. true1Unreleased shares (in shares)13false 3us-gaap_EmployeeStockOwnershipPlanESOPDeferredSharesFairValueus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse11881188USD$falsetruefalse2truefalsefalse432432USD$falsetruefalse3falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThe fair value of shares held by the ESOP as of the balance sheet date in which no ESOP participant has a vested interest and no lender has a claim. The fair value of an ESOP share is the amount the seller could reasonably expect to receive for it in a current sale between a willing buyer and a willing seller, that is, other than in a forced or liquidation sale, which would be the market price of the stock if it is publicly traded.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 93-6 -Paragraph 53 -Subparagraph e -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. false2Fair value of unreleased sharesfalseEmployee Stock Ownership Plan (Details) (USD $)NoRoundingNoRoundingUnKnownUnKnowntruefalsefalseSheethttp://wsbonline.com/role/EmployeeStockOwnershipPlanDetails313