XML 50 R33.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Allowance for Loan Losses (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2015
Allowance for Loan Losses |
Schedule of changes in the allowance for loan losses by segment of loans based on method of impairment | Changes in the allowance for loan losses by segment of loans based on method of impairment for the year ended December 31, 2015, were as follows:
Allowance for loan losses: |  |  |  | Real Estate |  | Real Estate |  | Real Estate |  |  |  |  |  |
|  | Commercial |  | Commercial |  | Construction |  | Residential |  | Consumer |  | Unallocated |  | Total
Beginning balance |  | $ | 1,644 |  | $ | 12,577 |  | $ | 1,475 |  | $ | 1,981 |  | $ | 1,454 |  | $ | 2,506 |  | $ | 21,637
Charge-offs |  |  | 993 |  |  | 1,653 |  |  | 2 |  |  | 1,639 |  |  | 483 |  |  | - |  |  | 4,770
Recoveries |  |  | 451 |  |  | 1,595 |  |  | 276 |  |  | 1,075 |  |  | 359 |  |  | - |  |  | 3,756
Provision (Release) |  |  | 994 |  |  | (3,506) |  |  | (1,484) |  |  | 277 |  |  | (140) |  |  | (541) |  |  | (4,400)
Ending balance |  | $ | 2,096 |  | $ | 9,013 |  | $ | 265 |  | $ | 1,694 |  | $ | 1,190 |  | $ | 1,965 |  | $ | 16,223
Ending balance: Individually evaluated for impairment |  | $ | 3 |  | $ | - |  | $ | - |  | $ | 31 |  | $ | - |  | $ | - |  | $ | 34
Ending balance: Collectively evaluated for impairment |  | $ | 2,093 |  | $ | 9,013 |  | $ | 265 |  | $ | 1,663 |  | $ | 1,190 |  | $ | 1,965 |  | $ | 16,189
Loans: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ending balance |  | $ | 141,315 |  | $ | 605,721 |  | $ | 19,806 |  | $ | 351,007 |  | $ | 4,216 |  | $ | 11,650 |  | $ | 1,133,715
Ending balance: Individually evaluated for impairment |  | $ | 73 |  | $ | 5,396 |  | $ | 83 |  | $ | 15,334 |  | $ | - |  | $ | - |  | $ | 20,886
Ending balance: Collectively evaluated for impairment |  | $ | 141,242 |  | $ | 600,325 |  | $ | 19,723 |  | $ | 335,673 |  | $ | 4,216 |  | $ | 11,650 |  | $ | 1,112,829
Changes in the allowance for loan losses by segment of loans based on method of impairment for the year ended December 31, 2014, were as follows:
Allowance for loan losses: |  |  |  | Real Estate |  | Real Estate |  | Real Estate |  |  |  |  |  |
|  | Commercial |  | Commercial |  | Construction |  | Residential |  | Consumer |  | Unallocated |  | Total
Beginning balance |  | $ | 2,250 |  | $ | 16,763 |  | $ | 1,980 |  | $ | 2,837 |  | $ | 1,439 |  | $ | 2,012 |  | $ | 27,281
Charge-offs |  |  | 578 |  |  | 1,972 |  |  | 174 |  |  | 3,393 |  |  | 526 |  |  | - |  |  | 6,643
Recoveries |  |  | 58 |  |  | 1,346 |  |  | 633 |  |  | 1,842 |  |  | 420 |  |  | - |  |  | 4,299
(Release) provision |  |  | (86) |  |  | (3,560) |  |  | (964) |  |  | 695 |  |  | 121 |  |  | 494 |  |  | (3,300)
Ending balance |  | $ | 1,644 |  | $ | 12,577 |  | $ | 1,475 |  | $ | 1,981 |  | $ | 1,454 |  | $ | 2,506 |  | $ | 21,637
Ending balance: Individually evaluated for impairment |  | $ | - |  | $ | 21 |  | $ | 98 |  | $ | 159 |  | $ | - |  | $ | - |  | $ | 278
Ending balance: Collectively evaluated for impairment |  | $ | 1,644 |  | $ | 12,556 |  | $ | 1,377 |  | $ | 1,822 |  | $ | 1,454 |  | $ | 2,506 |  | $ | 21,359
Loans: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ending balance |  | $ | 127,196 |  | $ | 600,629 |  | $ | 44,795 |  | $ | 370,191 |  | $ | 3,504 |  | $ | 13,017 |  | $ | 1,159,332
Ending balance: Individually evaluated for impairment |  | $ | 1,500 |  | $ | 15,253 |  | $ | 2,352 |  | $ | 16,781 |  | $ | - |  | $ | - |  | $ | 35,886
Ending balance: Collectively evaluated for impairment |  | $ | 125,696 |  | $ | 585,376 |  | $ | 42,443 |  | $ | 353,410 |  | $ | 3,504 |  | $ | 13,017 |  | $ | 1,123,446
Changes in the allowance for loan losses by segment of loans based on method of impairment for the year ended December 31, 2013, were as follows:
Allowance for loan losses: |  |  |  | Real Estate |  | Real Estate |  | Real Estate |  |  |  |  |  |
|  | Commercial |  | Commercial |  | Construction |  | Residential |  | Consumer |  | Unallocated |  | Total
Beginning balance |  | $ | 4,517 |  | $ | 20,100 |  | $ | 3,837 |  | $ | 4,535 |  | $ | 1,178 |  | $ | 4,430 |  | $ | 38,597
Charge-offs |  |  | 316 |  |  | 2,985 |  |  | 1,014 |  |  | 6,293 |  |  | 597 |  |  | - |  |  | 11,205
Recoveries |  |  | 119 |  |  | 5,325 |  |  | 1,266 |  |  | 1,221 |  |  | 508 |  |  | - |  |  | 8,439
(Release) provision |  |  | (2,070) |  |  | (5,677) |  |  | (2,109) |  |  | 3,374 |  |  | 350 |  |  | (2,418) |  |  | (8,550)
Ending balance |  | $ | 2,250 |  | $ | 16,763 |  | $ | 1,980 |  | $ | 2,837 |  | $ | 1,439 |  | $ | 2,012 |  | $ | 27,281
Ending balance: Individually evaluated for impairment |  | $ | - |  | $ | 1,152 |  | $ | 355 |  | $ | 888 |  | $ | - |  | $ | - |  | $ | 2,395
Ending balance: Collectively evaluated for impairment |  | $ | 2,250 |  | $ | 15,611 |  | $ | 1,625 |  | $ | 1,949 |  | $ | 1,439 |  | $ | 2,012 |  | $ | 24,886
Loans: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ending balance |  | $ | 104,805 |  | $ | 560,233 |  | $ | 29,351 |  | $ | 390,201 |  | $ | 2,760 |  | $ | 13,906 |  | $ | 1,101,256
Ending balance: Individually evaluated for impairment |  | $ | 27 |  | $ | 21,116 |  | $ | 4,746 |  | $ | 20,681 |  | $ | - |  | $ | - |  | $ | 46,570
Ending balance: Collectively evaluated for impairment |  | $ | 104,778 |  | $ | 539,117 |  | $ | 24,605 |  | $ | 369,520 |  | $ | 2,760 |  | $ | 13,906 |  | $ | 1,054,686

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

X
- Definition Tabular disclosure of financing receivables (examples of financing receivables include loans, trade accounts receivable and notes receivable) and activity in the allowance for credit losses account. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524 + Details
Name: | us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration