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v2.4.1.9

Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2015 | Mar. 31, 2014
Consolidated Statements of Comprehensive Income |  |
Net income | $ 3,499 us-gaap_NetIncomeLoss | $ 2,202 us-gaap_NetIncomeLoss
Unrealized holding gains (losses) on available-for-sale securities arising during the period | 921 us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax | (1,089)us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax
Related tax (expense) benefit | (438)osbc_OtherComprehensiveIncomeAvailableForSaleSecuritiesTaxPortionOnNetUnrealizedGainsAttributableToParent | 448 osbc_OtherComprehensiveIncomeAvailableForSaleSecuritiesTaxPortionOnNetUnrealizedGainsAttributableToParent
Holding gains (losses) after tax on available-for-sale securities | 483 us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax | (641)us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
Less: Reclassification adjustment for the net gains realized during the period |  |
Net realized losses | (109)osbc_OtherComprehensiveIncomeRealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax | (69)osbc_OtherComprehensiveIncomeRealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax
Income tax benefit on net realized gains | 45 osbc_OtherComprehensiveIncomeAvailableForSaleSecuritiesTaxPortionOnNetRealizedGainsAttributableToParent | 28 osbc_OtherComprehensiveIncomeAvailableForSaleSecuritiesTaxPortionOnNetRealizedGainsAttributableToParent
Net realized losses after tax | 64 osbc_OtherComprehensiveIncomeLossNetOfTaxPortionOfRealizedGainsAttributableToParent | 41 osbc_OtherComprehensiveIncomeLossNetOfTaxPortionOfRealizedGainsAttributableToParent
Other comprehensive income (loss) on available-for-sale securities | 547 osbc_OtherComprehensiveIncomeAvailableForSaleSecuritiesUnrealizedHoldingGainLossNetReclassificationAdjustmentForAmountsRealizedAfterTax | (600)osbc_OtherComprehensiveIncomeAvailableForSaleSecuritiesUnrealizedHoldingGainLossNetReclassificationAdjustmentForAmountsRealizedAfterTax
Accretion of net unrealized holding gains on held-to-maturity transferred from available-for-sale securities | 243 us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentForHeldToMaturityTransferredToAvailableForSaleSecuritiesBeforeTax | 247 us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentForHeldToMaturityTransferredToAvailableForSaleSecuritiesBeforeTax
Related tax expense | (100)osbc_OtherComprehensiveIncomeReclassificationAdjustmentForAvailableForSaleTransferredToHeldToMaturitySecuritiesTax | (102)osbc_OtherComprehensiveIncomeReclassificationAdjustmentForAvailableForSaleTransferredToHeldToMaturitySecuritiesTax
Other comprehensive income on held-to-maturity securities | 143 us-gaap_OtherComprehensiveIncomeLossTransfersFromHeldToMaturityToAvailableForSaleSecuritiesNetOfTax | 145 us-gaap_OtherComprehensiveIncomeLossTransfersFromHeldToMaturityToAvailableForSaleSecuritiesNetOfTax
Total other comprehensive income (loss) | 690 us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent | (455)us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent
Total comprehensive income | $ 4,189 us-gaap_ComprehensiveIncomeNetOfTax | $ 1,747 us-gaap_ComprehensiveIncomeNetOfTax

X
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- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Other Comprehensive Income -URI http://asc.fasb.org/extlink&oid=6519514 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Comprehensive Income -URI http://asc.fasb.org/extlink&oid=35737396 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e557-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Net Income -URI http://asc.fasb.org/extlink&oid=6518256 + Details
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