XML 22 R43.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Benefit Plans (Details Textual) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2013 | Mar. 31, 2012
Employee Stock Option [Member] |  |
Common Stock Shares Reserved For Future Issuance | 400,000 |
Weighted Average Remaining Life, Outstanding (In Years) | 10 years |
Director [Member] |  |
Defined Contribution Plan, Employers Matching Contribution, Annual Vesting Percentage | 100.00% |
Common Stock Shares Reserved For Future Issuance | 120,000 |
Director Compensation Expenses | $ 46 | $ 27
Stock Issued During Period, Value, Issued for Noncash Considerations | $ 30 | $ 15

X
- Definition Represents the total number of common stock shares which can be issued under the plan. + References No definition available. + Details
Name: | inbk_CommonStockSharesReservedForFutureIssuance
Namespace Prefix: | inbk_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition It represents compensation paid to director during the reporting period. + References No definition available. + Details
Name: | inbk_DirectorCompensationExpenses
Namespace Prefix: | inbk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Percentage of employer's matching contributions to a defined contribution plan that vests in a given year. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployersMatchingContributionAnnualVestingPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Value of stock issued for noncash consideration. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 915 -SubTopic 215 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6472370&loc=d3e38297-110927 + Details
Name: | us-gaap_StockIssuedDuringPeriodValueIssuedForNoncashConsiderations
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration