XML 41 R28.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Other Real Estate Owned (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2018
Other Real Estate Owned |
Schedule of activity in the other real estate owned (OREO) portfolio, net of valuation reserve |
|  | Three Months Ended |  | Six Months Ended |
|  | June 30, |  | June 30, |
Other real estate owned |  | 2018 |  | 2017 |  | 2018 |  | 2017 |
Balance at beginning of period |  | $ | 7,063 |  | $ | 13,481 |  | $ | 8,371 |  | $ | 11,916 |
Property additions |  |  | 2,812 |  |  | 204 |  |  | 2,812 |  |  | 3,620 |
Property improvements |  |  | - |  |  | - |  |  | 59 |  |  | - |
Less: |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from property disposals, net of participation purchase and of gains/losses |  |  | 709 |  |  | 1,569 |  |  | 1,964 |  |  | 3,102 |
Period valuation adjustments |  |  | 254 |  |  | 392 |  |  | 366 |  |  | 710 |
Balance at end of period |  | $ | 8,912 |  | $ | 11,724 |  | $ | 8,912 |  | $ | 11,724 |
Schedule of activity in valuation allowance |
|  | Three Months Ended |  | Six Months Ended |
|  | June 30, |  | June 30, |
|  | 2018 |  | 2017 |  | 2018 |  | 2017 |
Balance at beginning of period |  | $ | 8,099 |  | $ | 9,659 |  | $ | 8,208 |  | $ | 9,982 |
Provision for unrealized losses |  |  | 254 |  |  | 392 |  |  | 366 |  |  | 710 |
Reductions taken on sales |  |  | (5) |  |  | (1,747) |  |  | (226) |  |  | (2,388) |
Other adjustments |  |  | - |  |  | - |  |  | - |  |  | - |
Balance at end of period |  | $ | 8,348 |  | $ | 8,304 |  | $ | 8,348 |  | $ | 8,304 |
Schedule of expenses related to foreclosed assets, net of lease revenue |
|  | Three Months Ended |  | Six Months Ended |
|  | June 30, |  | June 30, |
|  | 2018 |  | 2017 |  | 2018 |  | 2017 |
Gain on sales, net |  | $ | (24) |  | $ | (104) |  | $ | (104) |  | $ | (178) |
Provision for unrealized losses |  |  | 254 |  |  | 392 |  |  | 366 |  |  | 710 |
Operating expenses |  |  | 213 |  |  | 293 |  |  | 369 |  |  | 816 |
Less: |  |  |  |  |  |  |  |  |  |  |  |  |
Lease revenue |  |  | 14 |  |  | 42 |  |  | 29 |  |  | 100 |
Net OREO expense |  | $ | 429 |  | $ | 539 |  | $ | 602 |  | $ | 1,248 |

X
- 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
Name: | osbc_OtherRealEstateExpensesRelatedToForeclosedAssetsTableTextBlock
Namespace Prefix: | osbc_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the change in valuation allowance of other real estate on properties acquired through foreclosure. + References No definition available. + Details
Name: | osbc_OtherRealEstateValuationAllowanceRollForwardTableTextBlock
Namespace Prefix: | osbc_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the change in other real estate on properties acquired through foreclosure. + References No definition available. + Details
Name: | osbc_RealEstateAcquiredThroughForeclosureRollForwardTableTextBlock
Namespace Prefix: | osbc_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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