XML 41 R40.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Loans and Allowance for Loan Losses - Age Analysis of Past Due Loans Segregated by Class of Loans (Detail) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2014 | Dec. 31, 2013 | Mar. 31, 2013
--- | --- | --- | ---
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30-89 Days Past Due | $ 18,670 |  | $ 15,970
90 Days and Greater | 8,368 |  | 4,945
Total Past Due Loans | 27,038 |  | 20,915
Current Loans | 3,515,232 |  | 3,199,052
Total Loans | 3,542,270 | 3,387,146 | 3,219,967
Accruing Loans 90 Days or More Past Due | 910 | 1,179 | 542
Non-residential real estate owner occupied [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30-89 Days Past Due | 518 |  | 1,230
90 Days and Greater | 298 |  | 112
Total Past Due Loans | 816 |  | 1,342
Current Loans | 457,978 |  | 452,461
Total Loans | 458,794 |  | 453,803
Accruing Loans 90 Days or More Past Due | 96 |  | 18
Non-residential real estate other [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30-89 Days Past Due | 4,978 |  | 2,063
90 Days and Greater | 935 |  | 1,833
Total Past Due Loans | 5,913 |  | 3,896
Current Loans | 873,592 |  | 786,343
Total Loans | 879,505 |  | 790,239
Accruing Loans 90 Days or More Past Due |  |  |
Residential real estate permanent mortgage [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30-89 Days Past Due | 1,867 |  | 2,351
90 Days and Greater | 458 |  | 460
Total Past Due Loans | 2,325 |  | 2,811
Current Loans | 270,879 |  | 245,945
Total Loans | 273,204 |  | 248,756
Accruing Loans 90 Days or More Past Due | 76 |  | 163
Residential real estate all other [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30-89 Days Past Due | 1,274 |  | 2,087
90 Days and Greater | 543 |  | 408
Total Past Due Loans | 1,817 |  | 2,495
Current Loans | 565,930 |  | 522,542
Total Loans | 567,747 |  | 525,037
Accruing Loans 90 Days or More Past Due | 86 |  | 105
Non-consumer non-real estate [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30-89 Days Past Due | 2,749 |  | 2,100
90 Days and Greater | 929 |  | 214
Total Past Due Loans | 3,678 |  | 2,314
Current Loans | 824,361 |  | 748,287
Total Loans | 828,039 |  | 750,601
Accruing Loans 90 Days or More Past Due | 18 |  | 74
Consumer non-real estate [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30-89 Days Past Due | 2,151 |  | 1,994
90 Days and Greater | 260 |  | 184
Total Past Due Loans | 2,411 |  | 2,178
Current Loans | 223,551 |  | 209,142
Total Loans | 225,962 |  | 211,320
Accruing Loans 90 Days or More Past Due | 218 |  | 126
Other loans [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30-89 Days Past Due | 2,080 |  | 2,152
90 Days and Greater | 337 |  | 1,406
Total Past Due Loans | 2,417 |  | 3,558
Current Loans | 145,794 |  | 140,468
Total Loans | 148,211 |  | 144,026
Accruing Loans 90 Days or More Past Due |  |  |
Acquired loans [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30-89 Days Past Due | 3,053 |  | 1,993
90 Days and Greater | 4,608 |  | 328
Total Past Due Loans | 7,661 |  | 2,321
Current Loans | 153,147 |  | 93,864
Total Loans | 160,808 |  | 96,185
Accruing Loans 90 Days or More Past Due | $ 416 |  | $ 56

X
- Definition Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due + References No definition available. + Details
Name: | banf_FinancingReceivableRecordedInvestmentThirtyToEightyNineDaysPastDue
Namespace Prefix: | banf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Recorded investment in financing receivables that are 90 days or more past due and still accruing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5111-111524 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Financing receivables that are current. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953401-111524 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Financing receivables that are equal to or greater than 90 days past due. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953401-111524 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Recorded Investment in financing receivables that are past due at the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953401-111524 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentPastDue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. 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 + Details
Name: | us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant