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Other Real Estate Owned (Tables) | 9 Months Ended
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Sep. 30, 2021
Other Real Estate Owned |
Schedule of activity in the other real estate owned (OREO) portfolio, net of valuation reserve | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​ | Nine Months Ended | ​
​ |  | September 30, |  | September 30, |
Other real estate owned |  | 2021 |  | 2020 |  | 2021 |  | 2020 | ​
Balance at beginning of period | ​ | $ | 1,877 | ​ | $ | 5,082 | ​ | $ | 2,474 | ​ | $ | 5,004 | ​
Property additions, net of acquisition adjustments | ​ | ​ | 70 | ​ | ​ | 314 | ​ | ​ | 70 | ​ | ​ | 898 | ​
Less: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Proceeds from property disposals, net of participation purchase and of gains/losses | ​ | ​ | 37 | ​ | ​ | 2,664 | ​ | ​ | 567 | ​ | ​ | 2,952 | ​
Period valuation (write-up)/write-down | ​ | ​ | (2) | ​ | ​ | 46 | ​ | ​ | 65 | ​ | ​ | 264 | ​
Balance at end of period | ​ | $ | 1,912 | ​ | $ | 2,686 | ​ | $ | 1,912 | ​ | $ | 2,686 | ​
Schedule of activity in valuation allowance | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Three Months Ended | ​ | Nine Months Ended |
​ |  | September 30, |  | September 30, |
​ |  | 2021 |  | 2020 |  | 2021 |  | 2020 |
Balance at beginning of period | ​ | $ | 1,296 | ​ | $ | 6,464 | ​ | $ | 1,643 | ​ | $ | 6,712 | ​
Provision for unrealized losses | ​ | ​ | (2) | ​ | ​ | 46 | ​ | ​ | 65 | ​ | ​ | 264 | ​
Reductions taken on sales | ​ | ​ | (129) | ​ | ​ | (4,897) | ​ | ​ | (543) | ​ | ​ | (5,363) | ​
Balance at end of period | ​ | $ | 1,165 | ​ | $ | 1,613 | ​ | $ | 1,165 | ​ | $ | 1,613 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Schedule of expenses related to foreclosed assets, net of lease revenue | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​ | Nine Months Ended | ​
​ | ​ | September 30, |  | September 30, | ​
​ |  | 2021 |  | 2020 |  | 2021 |  | 2020 | ​
Gain on sales, net | ​ | $ | (5) | ​ | $ | (165) | ​ | $ | (40) | ​ | $ | (188) | ​
Provision for unrealized losses | ​ | ​ | (2) | ​ | ​ | 46 | ​ | ​ | 65 | ​ | ​ | 264 | ​
Operating expenses | ​ | ​ | 32 | ​ | ​ | 253 | ​ | ​ | 117 | ​ | ​ | 460 | ​
Less: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Lease revenue | ​ | ​ | - | ​ | ​ | 9 | ​ | ​ | 4 | ​ | ​ | 31 | ​
Net OREO expense | ​ | $ | 25 | ​ | $ | 125 | ​ | $ | 138 | ​ | $ | 505 | ​

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- Definition Tabular disclosure of expenses related to foreclosed assets, net of lease revenue. Foreclosed assets include all assets obtained in full or partial satisfaction of a debt arrangement through foreclosure proceedings. + References No definition available. + Details
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- Definition Tabular disclosure of the change in valuation allowance of other real estate on properties acquired through foreclosure. + References No definition available. + Details
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- Definition Tabular disclosure of the change in other real estate on properties acquired through foreclosure. + References No definition available. + Details
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Namespace Prefix: | osbc_
Data Type: | nonnum:textBlockItemType
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- References No definition available. + Details
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