XML 28 R50.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |
Beginning Balance | $ 8,068 |  |  |  |  |
Charge-offs | (2,953) |  |  |  |  |
Recoveries | 100 |  |  |  |  |
Provision for loan losses | 3,134 |  |  |  |  |
Ending Balance | 8,349 |  | 8,068 |  |  |
Allowance for Loan Losses [Abstract] |  |  |  |  |  |
Individually evaluated for impairment | 269 |  |  |  |  |
Collectively evaluated for impairment | 8,080 |  |  |  |  |
Total | 8,349 |  | 8,068 |  |  |
Loans [Abstract] |  |  |  |  |  |
Individually evaluated for impairment | 11,053 |  |  |  |  |
Collectively evaluated for impairment | 582,062 |  |  |  |  |
Total | 593,115 |  |  |  |  |
Ratios for allowance for loan losses [Abstract] |  |  |  |  |  |
Ratio of allowance for loan losses to the end of period loans, net of unearned income and deferred fees (in hundredths) | 1.41% |  | 1.37% |  | 1.33% |
Ratio of net charge-offs to average loans, net of unearned income and deferred fees (in hundredths) | 0.49% |  | 0.43% |  | 0.46% |
Nonperforming assets [Abstract] |  |  |  |  |  |
Nonaccrual loans | 3,466 |  | 1,398 |  | 1,938 |
Restructured loans in nonaccrual | 2,151 |  | 3,806 |  | 6,133 |
Total nonperforming loans | 5,617 |  | 5,204 |  | 8,071 |
Other real estate owned, net | 1,435 |  | 1,489 |  | 1,723 |
Total nonperforming assets | 7,052 |  | 6,693 |  | 9,794 |
Ratio of nonperforming assets to loans, net of unearned income and deferred fees, plus other real estate owned (in hundredths) | 1.19% |  | 1.13% |  | 1.69% |
Ratio of allowance for loan losses to nonperforming loans (in hundredths) | 148.64% | [1] | 155.03% | [1] | 94.96% | [1]
Number of days loans past due, minimum | 90 days |  |  |  |  |
Summary of loans past due 90 days or more and impaired loans [Abstract] |  |  |  |  |  |
Loans past due 90 days or more and still accruing | 170 |  | 481 |  | 1,336 |
Ratio of loans past due 90 days or more and still accruing to loans, net of unearned income and deferred fees (in hundredths) | 0.03% |  | 0.08% |  | 0.23% |
Accruing restructured loans | 2,005 |  | 3,756 |  | 350 |
Impaired loans: |  |  |  |  |  |
Impaired loans with no valuation allowance | 10,422 |  | 5,505 |  | 1,115 |
Impaired loans with a valuation allowance | 631 |  | 7,091 |  | 7,676 |
Total impaired loans | 11,053 |  | 12,596 |  | 8,791 |
Valuation allowance | (269) |  | (1,123) |  | (1,200) |
Impaired loans, net of allowance | 10,784 |  | 11,473 |  | 7,591 |
Average recorded investment in impaired loans | 13,520 | [2] | 8,734 |  | 7,526 |
Income recognized on impaired loans, after designation as impaired | 9 |  | 141 |  | 17 |
Amount of income recognized on a cash basis | 0 |  | 0 |  | 0 |
Scenario, Previously Reported [Member] |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |
Beginning Balance |  |  | 7,664 | [3] | 6,926 | [3]
Charge-offs |  |  | (2,628) | [3] | (2,810) | [3]
Recoveries |  |  | 83 | [3] | 139 | [3]
Provision for loan losses |  |  | 2,949 | [3] | 3,409 | [3]
Ending Balance |  |  | 8,068 | [3] | 7,664 | [3]
Allowance for Loan Losses [Abstract] |  |  |  |  |  |
Individually evaluated for impairment |  |  | 1,123 | [3] |  |
Collectively evaluated for impairment |  |  | 6,945 | [3] |  |
Total |  |  | 8,068 | [3] | 7,664 | [3]
Loans [Abstract] |  |  |  |  |  |
Individually evaluated for impairment |  |  | 12,596 | [3] |  |
Collectively evaluated for impairment |  |  | 575,874 | [3] |  |
Total |  |  | 588,470 | [3] |  |
Nonperforming assets [Abstract] |  |  |  |  |  |
Total nonperforming loans |  |  | 5,204 | [4] |  |
Summary of loans past due 90 days or more and impaired loans [Abstract] |  |  |  |  |  |
Loans past due 90 days or more and still accruing |  |  | 481 | [4] |  |
Impaired loans: |  |  |  |  |  |
Total impaired loans |  |  | 12,596 | [4] | 8,791 | [4]
Valuation allowance |  |  | (1,123) | [4] | (1,200) | [4]
Average recorded investment in impaired loans |  |  | 8,734 | [2],[4] | 7,526 | [2],[4]
Income recognized on impaired loans, after designation as impaired |  |  | 141 | [4] | 17 | [4]
Real Estate Construction [Member] |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |
Beginning Balance | 1,079 |  |  |  |  |
Charge-offs | (640) |  |  |  |  |
Recoveries | 13 |  |  |  |  |
Provision for loan losses | 723 |  |  |  |  |
Ending Balance | 1,175 |  |  |  |  |
Allowance for Loan Losses [Abstract] |  |  |  |  |  |
Individually evaluated for impairment | 0 |  |  |  |  |
Collectively evaluated for impairment | 1,175 |  |  |  |  |
Total | 1,175 |  |  |  |  |
Loans [Abstract] |  |  |  |  |  |
Individually evaluated for impairment | 3,623 |  |  |  |  |
Collectively evaluated for impairment | 46,690 |  |  |  |  |
Total | 50,313 |  |  |  |  |
Consumer Real Estate [Member] |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |
Beginning Balance | 1,245 |  |  |  |  |
Charge-offs | (370) |  |  |  |  |
Recoveries | 8 |  |  |  |  |
Provision for loan losses | 1,380 |  |  |  |  |
Ending Balance | 2,263 |  |  |  |  |
Allowance for Loan Losses [Abstract] |  |  |  |  |  |
Individually evaluated for impairment | 43 |  |  |  |  |
Collectively evaluated for impairment | 2,220 |  |  |  |  |
Total | 2,263 |  |  |  |  |
Loans [Abstract] |  |  |  |  |  |
Individually evaluated for impairment | 864 |  |  |  |  |
Collectively evaluated for impairment | 142,398 |  |  |  |  |
Total | 143,262 |  |  |  |  |
Consumer Real Estate [Member] | Scenario, Previously Reported [Member] |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |
Beginning Balance |  |  | 1,059 | [3] | 249 | [3]
Charge-offs |  |  | (461) | [3] | (89) | [3]
Recoveries |  |  | 14 | [3] | 10 | [3]
Provision for loan losses |  |  | 440 | [3] | 889 | [3]
Ending Balance |  |  | 1,052 | [3] | 1,059 | [3]
Allowance for Loan Losses [Abstract] |  |  |  |  |  |
Individually evaluated for impairment |  |  | 0 | [3] |  |
Collectively evaluated for impairment |  |  | 1,052 | [3] |  |
Total |  |  | 1,052 | [3] | 1,059 | [3]
Loans [Abstract] |  |  |  |  |  |
Individually evaluated for impairment |  |  | 238 | [3] |  |
Collectively evaluated for impairment |  |  | 109,843 | [3] |  |
Total |  |  | 110,081 | [3] |  |
Commercial Real Estate [Member] |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |
Beginning Balance | 3,515 |  |  |  |  |
Charge-offs | (1,589) |  |  |  |  |
Recoveries | 0 |  |  |  |  |
Provision for loan losses | 1,389 |  |  |  |  |
Ending Balance | 3,315 |  |  |  |  |
Allowance for Loan Losses [Abstract] |  |  |  |  |  |
Individually evaluated for impairment | 0 |  |  |  |  |
Collectively evaluated for impairment | 3,315 |  |  |  |  |
Total | 3,315 |  |  |  |  |
Loans [Abstract] |  |  |  |  |  |
Individually evaluated for impairment | 6,048 |  |  |  |  |
Collectively evaluated for impairment | 298,260 |  |  |  |  |
Total | 304,308 |  |  |  |  |
Commercial Real Estate [Member] | Scenario, Previously Reported [Member] |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |
Beginning Balance |  |  | 4,033 | [3] | 4,321 | [3]
Charge-offs |  |  | (457) | [3] | (1,021) | [3]
Recoveries |  |  | 0 | [3] | 61 | [3]
Provision for loan losses |  |  | 935 | [3] | 672 | [3]
Ending Balance |  |  | 4,511 | [3] | 4,033 | [3]
Allowance for Loan Losses [Abstract] |  |  |  |  |  |
Individually evaluated for impairment |  |  | 1,014 | [3] |  |
Collectively evaluated for impairment |  |  | 3,497 | [3] |  |
Total |  |  | 4,511 | [3] | 4,033 | [3]
Loans [Abstract] |  |  |  |  |  |
Individually evaluated for impairment |  |  | 9,067 | [3] |  |
Collectively evaluated for impairment |  |  | 357,507 | [3] |  |
Total |  |  | 366,574 | [3] |  |
Consumer Non Real Estate [Member] |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |
Beginning Balance | 403 |  |  |  |  |
Charge-offs | (245) |  |  |  |  |
Recoveries | 77 |  |  |  |  |
Provision for loan losses | 182 |  |  |  |  |
Ending Balance | 417 |  |  |  |  |
Allowance for Loan Losses [Abstract] |  |  |  |  |  |
Individually evaluated for impairment | 0 |  |  |  |  |
Collectively evaluated for impairment | 417 |  |  |  |  |
Total | 417 |  |  |  |  |
Loans [Abstract] |  |  |  |  |  |
Individually evaluated for impairment | 0 |  |  |  |  |
Collectively evaluated for impairment | 31,714 |  |  |  |  |
Total | 31,714 |  |  |  |  |
Consumer Non Real Estate [Member] | Scenario, Previously Reported [Member] |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |
Beginning Balance |  |  | 586 | [3] | 1,049 | [3]
Charge-offs |  |  | (266) | [3] | (358) | [3]
Recoveries |  |  | 68 | [3] | 67 | [3]
Provision for loan losses |  |  | 13 | [3] | (172) | [3]
Ending Balance |  |  | 401 | [3] | 586 | [3]
Allowance for Loan Losses [Abstract] |  |  |  |  |  |
Individually evaluated for impairment |  |  | 0 | [3] |  |
Collectively evaluated for impairment |  |  | 401 | [3] |  |
Total |  |  | 401 | [3] | 586 | [3]
Loans [Abstract] |  |  |  |  |  |
Individually evaluated for impairment |  |  | 0 | [3] |  |
Collectively evaluated for impairment |  |  | 29,707 | [3] |  |
Total |  |  | 29,707 | [3] |  |
Commercial Non Real Estate [Member] |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |
Beginning Balance | 1,473 |  |  |  |  |
Charge-offs | (109) |  |  |  |  |
Recoveries | 2 |  |  |  |  |
Provision for loan losses | (410) |  |  |  |  |
Ending Balance | 956 |  |  |  |  |
Allowance for Loan Losses [Abstract] |  |  |  |  |  |
Individually evaluated for impairment | 226 |  |  |  |  |
Collectively evaluated for impairment | 730 |  |  |  |  |
Total | 956 |  |  |  |  |
Loans [Abstract] |  |  |  |  |  |
Individually evaluated for impairment | 518 |  |  |  |  |
Collectively evaluated for impairment | 36,831 |  |  |  |  |
Total | 37,349 |  |  |  |  |
Commercial and Industrial [Member] | Scenario, Previously Reported [Member] |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |
Beginning Balance |  |  | 1,108 | [3] | 459 | [3]
Charge-offs |  |  | (655) | [3] | (927) | [3]
Recoveries |  |  | 1 | [3] | 1 | [3]
Provision for loan losses |  |  | 581 | [3] | 1,575 | [3]
Ending Balance |  |  | 1,035 | [3] | 1,108 | [3]
Allowance for Loan Losses [Abstract] |  |  |  |  |  |
Individually evaluated for impairment |  |  | 62 | [3] |  |
Collectively evaluated for impairment |  |  | 973 | [3] |  |
Total |  |  | 1,035 | [3] | 1,108 | [3]
Loans [Abstract] |  |  |  |  |  |
Individually evaluated for impairment |  |  | 139 | [3] |  |
Collectively evaluated for impairment |  |  | 37,584 | [3] |  |
Total |  |  | 37,723 | [3] |  |
Public Sector and IDA [Member] |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |
Beginning Balance | 232 |  |  |  |  |
Charge-offs | 0 |  |  |  |  |
Recoveries | 0 |  |  |  |  |
Provision for loan losses | (90) |  |  |  |  |
Ending Balance | 142 |  |  |  |  |
Allowance for Loan Losses [Abstract] |  |  |  |  |  |
Individually evaluated for impairment | 0 |  |  |  |  |
Collectively evaluated for impairment | 142 |  |  |  |  |
Total | 142 |  |  |  |  |
Loans [Abstract] |  |  |  |  |  |
Individually evaluated for impairment | 0 |  |  |  |  |
Collectively evaluated for impairment | 26,169 |  |  |  |  |
Total | 26,169 |  |  |  |  |
Nonperforming assets [Abstract] |  |  |  |  |  |
Total nonperforming loans | 0 |  |  |  |  |
Summary of loans past due 90 days or more and impaired loans [Abstract] |  |  |  |  |  |
Loans past due 90 days or more and still accruing | 0 |  |  |  |  |
Impaired loans: |  |  |  |  |  |
Total impaired loans | 0 |  |  |  |  |
Valuation allowance | 0 |  |  |  |  |
Average recorded investment in impaired loans | 0 | [2] |  |  |  |
Income recognized on impaired loans, after designation as impaired | 0 |  |  |  |  |
Construction, Development & Other Land [Member] | Scenario, Previously Reported [Member] |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |
Beginning Balance |  |  | 749 | [3] | 562 | [3]
Charge-offs |  |  | (789) | [3] | (415) | [3]
Recoveries |  |  | 0 | [3] | 0 | [3]
Provision for loan losses |  |  | 988 | [3] | 602 | [3]
Ending Balance |  |  | 948 | [3] | 749 | [3]
Allowance for Loan Losses [Abstract] |  |  |  |  |  |
Individually evaluated for impairment |  |  | 47 | [3] |  |
Collectively evaluated for impairment |  |  | 901 | [3] |  |
Total |  |  | 948 | [3] | 749 | [3]
Loans [Abstract] |  |  |  |  |  |
Individually evaluated for impairment |  |  | 3,152 | [3] |  |
Collectively evaluated for impairment |  |  | 41,233 | [3] |  |
Total |  |  | 44,385 | [3] |  |
Unallocated [Member] |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |
Beginning Balance | 121 |  |  |  |  |
Charge-offs | 0 |  |  |  |  |
Recoveries | 0 |  |  |  |  |
Provision for loan losses | (40) |  |  |  |  |
Ending Balance | 81 |  |  |  |  |
Allowance for Loan Losses [Abstract] |  |  |  |  |  |
Individually evaluated for impairment | 0 |  |  |  |  |
Collectively evaluated for impairment | 81 |  |  |  |  |
Total | 81 |  |  |  |  |
Loans [Abstract] |  |  |  |  |  |
Individually evaluated for impairment | 0 |  |  |  |  |
Collectively evaluated for impairment | 0 |  |  |  |  |
Total | 0 |  |  |  |  |
Unallocated [Member] | Scenario, Previously Reported [Member] |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |  |
Beginning Balance |  |  | 129 | [3] | 286 | [3]
Charge-offs |  |  | 0 | [3] | 0 | [3]
Recoveries |  |  | 0 | [3] | 0 | [3]
Provision for loan losses |  |  | (8) | [3] | (157) | [3]
Ending Balance |  |  | 121 | [3] | 129 | [3]
Allowance for Loan Losses [Abstract] |  |  |  |  |  |
Individually evaluated for impairment |  |  | 0 | [3] |  |
Collectively evaluated for impairment |  |  | 121 | [3] |  |
Total |  |  | 121 | [3] | 129 | [3]
Loans [Abstract] |  |  |  |  |  |
Individually evaluated for impairment |  |  | 0 | [3] |  |
Collectively evaluated for impairment |  |  | 0 | [3] |  |
Total |  |  | $ 0 | [3] |  |
[1] | The Company defines nonperforming loans as total nonaccrual and restructured loans that are nonaccrual. Loans 90 days past due and still accruing and accruing restructured loans are excluded.
[2] | Recorded investment includes the unpaid principal balance and any accrued interest and deferred fees and costs.
[3] | Segments reported for December 31, 2011 and December 31, 2010 are presented using the segmentation method in effect for 2011 and 2010. The Company began reporting under revised segments beginning 2012.
[4] | Segments and classes at December 31, 2011 are reported using the segmentation method in effect for 2011. The Company began reporting under revised segments beginning in 2012.

X
- Definition Reflects the carrying amount of loans modified in a troubled debt restructuring that are accruing interest. + References No definition available. + Details
Name: | nksh_AccruingRestructuredLoans
Namespace Prefix: | nksh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Reflects the percentage derived from dividing the nonperforming assets by total loans net of unearned income deferred fees plus other real estate owned. + References No definition available. + Details
Name: | nksh_AssetsRatioOfNonperformingAssetsToLoansNetOfUnearnedIncomeAndDeferredFeesPlusOreo
Namespace Prefix: | nksh_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Carrying amount as of the balance sheet date of all real property obtained in full or partial satisfaction of a debt arrangement through foreclosure proceedings or defeasance. + References No definition available. + Details
Name: | nksh_ForeclosedAssetsRealProperty
Namespace Prefix: | nksh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses, net of allowance. + References No definition available. + Details
Name: | nksh_ImpairedLoansNetOfAllowance
Namespace Prefix: | nksh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Recorded investment in non-restructured loans that are on nonaccrual status as of the balance sheet date. + References No definition available. + Details
Name: | nksh_LoanReceivableNonaccrual
Namespace Prefix: | nksh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the minimum number of days considered as loans past due and still accruing. + References No definition available. + Details
Name: | nksh_MinimumNumberOfDaysLoansPastDue
Namespace Prefix: | nksh_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Refers to restructured loans in nonaccrual. + References No definition available. + Details
Name: | nksh_NonaccrualRestructuredLoans
Namespace Prefix: | nksh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents financing receivables that are in nonaccrual status and other real estate owned. + References No definition available. + Details
Name: | nksh_NonperformingAssets
Namespace Prefix: | nksh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | nksh_NonperformingAssetsAbstract
Namespace Prefix: | nksh_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents ratio of allowance for loan losses to the end of period loans, net of unearned income and deferred fees. + References No definition available. + Details
Name: | nksh_RatioOfAllowanceForLoanLossesToEndOfPeriodLoans
Namespace Prefix: | nksh_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Refers to ratio of allowance for loan losses to nonperforming loans. + References No definition available. + Details
Name: | nksh_RatioOfAllowanceForLoanLossesToNonperformingLoans
Namespace Prefix: | nksh_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents ratio of loans past due 90 days or more and still accruing to loans, net of unearned income and deferred fees. + References No definition available. + Details
Name: | nksh_RatioOfLoansPastDue90DaysOrMoreAndStillAccruingToLoans
Namespace Prefix: | nksh_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents ratio of net charge-offs to average loans, net of unearned income and deferred fees. + References No definition available. + Details
Name: | nksh_RatioOfNetChargeOffsToAverageLoans
Namespace Prefix: | nksh_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | nksh_RatiosForAllowanceForLoanLossesAbstract
Namespace Prefix: | nksh_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | nksh_SummaryOfLoansPastDue90DaysOrMoreAndImpairedLoansAbstract
Namespace Prefix: | nksh_
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=7512638&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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=7512638&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of recovery of financing receivables doubtful of collection that were previously charged off. + 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=7512638&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Definition Amount of direct write-downs of financing receivables charged against the allowance. + 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=7512638&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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=7512638&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=7512638&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
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=7512638&loc=d3e5111-111524 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Recorded investment in financing receivables that are on nonaccrual status as of 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 7 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5111-111524 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5258-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of interest income recognized on a cash-basis method of accounting that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableInterestIncomeCashBasisMethod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of allowance for credit losses related to recorded investment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableRelatedAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Definition Amount of unpaid principal balance of impaired financing receivables for which there is no related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Unpaid principal balance of impaired financing receivables for which there is a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance
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 Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 8, 9 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: 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 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 OTS -Name Federal Regulation (FR) -Number Title 12 -Section 563c.102 -Paragraph 8 -Subparagraph a(ii) -Chapter V -Subsection I -LegacyDoc This is a non-GAAP reference that was included in the 2009 taxonomy. It will be removed from future versions of this taxonomy. 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 FASB -Name Statement of Financial Accounting Standard (FAS) -Number 114 -Paragraph 20 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 7: 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
- Details
Name: | us-gaap_LoansAndLeasesReceivableAllowanceAbstract
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=6375948&loc=d3e4428-111522 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 01-6 -Paragraph 13 -Subparagraph e -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The sum of the periodic provision charged to earnings, based on an assessment of uncollectibility from the counterparty on account of loan, lease or other credit losses, to reduce these accounts to the amount that approximates their net realizable value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 11 -Article 9 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)(2) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Audit and Accounting Guide (AAG) -Number AAG-DEP -Paragraph 168, 169, 170 -IssueDate 2006-05-01 -Chapter 5 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.11) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
Name: | us-gaap_ProvisionForLoanLeaseAndOtherLosses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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