XML 62 R51.htm IDEA: XBRL DOCUMENT
v3.22.1

Other Real Estate Owned (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Activity in the other real estate owned (OREO) portfolio, net of valuation reserve |  |
Balance at beginning of period | $ 2,356 | $ 2,474
Property additions, net of acquisition adjustments | 87 |
Less: Proceeds from property disposals, net of participation purchase and of gains/losses | 69 | 305
Less: Period valuation write-down |  | 6
Balance at end of period | 2,374 | 2,163
Activity in the valuation allowance |  |
Balance at beginning of period | 1,179 | 1,643
Provision for unrealized losses |  | 6
Provision for unrealized losses |  | 6
Balance at end of period | 1,179 | 1,649
Expenses related to foreclosed assets, net of lease revenue |  |
Gain on sales, net | (49) | (20)
Provision for unrealized losses |  | 6
Operating expenses | 37 | 54
Less: Lease revenue |  | 4
Net OREO (gain) expense | $ (12) | $ 36

X
- Definition Amount of expense recognized during the period for real estate assets acquired through foreclosure, net of lease revenue. + References No definition available. + Details
Name: | osbc_ForeclosedRealEstateExpenseNetOfLeaseRevenue
Namespace Prefix: | osbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The net gain (loss) before provision for valuation allowances resulting from sales and other disposals of other real estate owned. + References No definition available. + Details
Name: | osbc_GainsLossesOnSalesOfOtherRealEstateBeforeProvisionForValuationAllowance
Namespace Prefix: | osbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Lease revenue for other real estate owned. + References No definition available. + Details
Name: | osbc_LeaseRevenueForOtherRealEstate
Namespace Prefix: | osbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | osbc_OtherRealEstateOwnedExpensesRelatedToForeclosedAssetsAbstract
Namespace Prefix: | osbc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of operating expenses recognized during the period for real estate assets acquired through settlement or foreclosure. + References No definition available. + Details
Name: | osbc_RealEstateAcquiredThroughForeclosureOperatingExpenses
Namespace Prefix: | osbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition NA + References No definition available. + Details
Name: | osbc_RealEstateAcquisitionsThroughForeclosuresNetOfAcquisitionAdjustments
Namespace Prefix: | osbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of real estate sold during the period net of gains (losses) on sale. + References No definition available. + Details
Name: | osbc_RealEstateCostOfRealEstateSoldNetOfGainLoss
Namespace Prefix: | osbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of expense (benefit) recognized in the income statement for a decrease (increase) in valuation of real estate owned (REO). + References No definition available. + Details
Name: | osbc_RealEstateOwnedValuationAllowanceProvisionBenefit
Namespace Prefix: | osbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of the increase (decrease) in the real estate owned valuation allowance, net of miscellaneous adjustments, that is charged against earnings in the period. + References No definition available. + Details
Name: | osbc_RealEstateOwnedValuationAllowanceProvisionNetOfAdjustment
Namespace Prefix: | osbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_OtherRealEstateRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Carrying amount as of the balance sheet date of land and buildings obtained through foreclosure proceedings or defeasance in full or partial satisfaction of a debt arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5162-111524 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=124259787&loc=d3e4437-111522 + Details
Name: | us-gaap_RealEstateAcquiredThroughForeclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition For each period for which an income statement is required, disclosure of the changes in the allowance, including balances at end of period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10(4)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
Name: | us-gaap_RealEstateOwnedValuationAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of expense recognized in the income statement for a decrease in valuation of real estate owned (REO). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10(4)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
Name: | us-gaap_RealEstateOwnedValuationAllowanceProvision1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_RealEstateOwnedValuationAllowanceRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration