XML 79 R49.htm IDEA: XBRL DOCUMENT
v3.3.0.814

Allowance for Loan Losses (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014 | Dec. 31, 2014
Changes in the allowance for loan losses by segment of loans based on method of impairment |  |  |  |  |
Estimated impact of this methodology change in the required reserve |  |  | $ 1,400 |  |
Allowance for loan losses: |  |  |  |  |
Beginning Balance | $ 18,321 | $ 23,856 | 21,637 | $ 27,281 |
Charge-offs | 576 | 2,157 | 3,982 | 5,502 |
Recoveries | 968 | 1,631 | 3,358 | 3,551 |
(Release) provision | (2,100) |  | (4,400) | (2,000) |
Ending Balance | 16,613 | 23,330 | 16,613 | 23,330 |
Ending balance: Individually evaluated for impairment | 25 | 541 | 25 | 541 |
Ending balance: Collectively evaluated for impairment | 16,588 | 22,789 | 16,588 | 22,789 |
Loans: |  |  |  |  |
Ending balance | 1,132,912 | 1,140,882 | 1,132,912 | 1,140,882 | $ 1,159,332
Ending balance: Individually evaluated for impairment | 25,132 | 40,786 | 25,132 | 40,786 |
Ending balance: Collectively evaluated for impairment | 1,107,780 | 1,100,096 | 1,107,780 | 1,100,096 |
Commercial |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Beginning Balance | 1,632 | 1,991 | 1,644 | 2,250 |
Charge-offs | 101 | 512 | 991 | 519 |
Recoveries | 213 | 6 | 437 | 56 |
(Release) provision | 340 | 41 | 994 | (261) |
Ending Balance | 2,084 | 1,526 | 2,084 | 1,526 |
Ending balance: Individually evaluated for impairment | 5 |  | 5 |  |
Ending balance: Collectively evaluated for impairment | 2,079 | 1,526 | 2,079 | 1,526 |
Loans: |  |  |  |  |
Ending balance | 129,733 | 114,990 | 129,733 | 114,990 | 127,196
Ending balance: Individually evaluated for impairment | 532 | 1,645 | 532 | 1,645 |
Ending balance: Collectively evaluated for impairment | 129,201 | 113,345 | 129,201 | 113,345 |
Real estate - commercial |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Beginning Balance | 10,201 | 13,228 | 12,577 | 16,763 |
Charge-offs | 21 | 545 | 1,547 | 1,634 |
Recoveries | 275 | 878 | 1,570 | 1,106 |
(Release) provision | (1,296) | (744) | (3,441) | (3,418) |
Ending Balance | 9,159 | 12,817 | 9,159 | 12,817 |
Ending balance: Individually evaluated for impairment |  | 167 |  | 167 |
Ending balance: Collectively evaluated for impairment | 9,159 | 12,650 | 9,159 | 12,650 |
Loans: |  |  |  |  |
Ending balance | 609,937 | 600,649 | 609,937 | 600,649 |
Ending balance: Individually evaluated for impairment | 4,974 | 19,515 | 4,974 | 19,515 |
Ending balance: Collectively evaluated for impairment | 604,963 | 581,134 | 604,963 | 581,134 |
Real estate - construction |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Beginning Balance | 662 | 1,754 | 1,475 | 1,980 |
Charge-offs |  | 1 | 2 | 174 |
Recoveries | 204 | 3 | 270 | 507 |
(Release) provision | (421) | 141 | (1,298) | (416) |
Ending Balance | 445 | 1,897 | 445 | 1,897 |
Ending balance: Individually evaluated for impairment |  | 107 |  | 107 |
Ending balance: Collectively evaluated for impairment | 445 | 1,790 | 445 | 1,790 |
Loans: |  |  |  |  |
Ending balance | 23,461 | 41,936 | 23,461 | 41,936 |
Ending balance: Individually evaluated for impairment | 3,803 | 2,585 | 3,803 | 2,585 |
Ending balance: Collectively evaluated for impairment | 19,658 | 39,351 | 19,658 | 39,351 |
Real estate - residential |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Beginning Balance | 1,860 | 2,373 | 1,981 | 2,837 |
Charge-offs | 342 | 925 | 1,119 | 2,752 |
Recoveries | 192 | 646 | 819 | 1,585 |
(Release) provision | (42) | 7 | (13) | 431 |
Ending Balance | 1,668 | 2,101 | 1,668 | 2,101 |
Ending balance: Individually evaluated for impairment | 20 | 267 | 20 | 267 |
Ending balance: Collectively evaluated for impairment | 1,648 | 1,834 | 1,648 | 1,834 |
Loans: |  |  |  |  |
Ending balance | 354,106 | 365,602 | 354,106 | 365,602 |
Ending balance: Individually evaluated for impairment | 15,823 | 17,041 | 15,823 | 17,041 |
Ending balance: Collectively evaluated for impairment | 338,283 | 348,561 | 338,283 | 348,561 |
Consumer |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Beginning Balance | 1,249 | 1,464 | 1,454 | 1,439 |
Charge-offs | 112 | 174 | 323 | 423 |
Recoveries | 84 | 98 | 262 | 297 |
(Release) provision | (68) | 16 | (240) | 91 |
Ending Balance | 1,153 | 1,404 | 1,153 | 1,404 |
Ending balance: Collectively evaluated for impairment | 1,153 | 1,404 | 1,153 | 1,404 |
Loans: |  |  |  |  |
Ending balance | 4,005 | 3,142 | 4,005 | 3,142 | 3,504
Ending balance: Collectively evaluated for impairment | 4,005 | 3,142 | 4,005 | 3,142 |
All other |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Beginning Balance | 2,717 | 3,046 | 2,506 | 2,012 |
(Release) provision | (613) | 539 | (402) | 1,573 |
Ending Balance | 2,104 | 3,585 | 2,104 | 3,585 |
Ending balance: Collectively evaluated for impairment | 2,104 | 3,585 | 2,104 | 3,585 |
Loans: |  |  |  |  |
Ending balance | 11,670 | 14,563 | 11,670 | 14,563 | $ 13,017
Ending balance: Collectively evaluated for impairment | $ 11,670 | $ 14,563 | $ 11,670 | $ 14,563 |

X
- Definition Amount of expense (income) related to provision for or (release of) provision for estimated loss from loan and lease transactions. + References No definition available. + Details
Name: | osbc_ProvisionReleaseForLoanAndLeaseLosses
Namespace Prefix: | osbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524 + Details
Name: | us-gaap_AllowanceForLoanAndLeaseLossRecoveryOfBadDebts
Namespace Prefix: | us-gaap_
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_AllowanceForLoanAndLeaseLossesRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Subparagraph d -Article 9 + Details
Name: | us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The effect of a change in method or methods for calculating the allowance for credit losses on the current period provision. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesEffectOfChangeInMethod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The balance of financing receivables that were collectively evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The balance of financing receivables that were individually evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Subparagraph d -Article 9 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section L -Subsection 1 + Details
Name: | us-gaap_LoansAndLeasesReceivableAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5074-111524 + Details
Name: | us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialRealEstateConstructionFinancingReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ResidentialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_UnallocatedFinancingReceivablesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |