XML 60 R50.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Benefit Plans - Deferred Stock Rights (Details) | 9 Months Ended
--- | ---
Sep. 30, 2018 shares
Deferred Stock Rights |
Outstanding, beginning of period | 82,995
Granted | 394
Exercised | 0
Outstanding, end of period | 83,389

X
- Definition It represents the deferred stock rights exercised during the period related to deferred stock plan. + References No definition available. + Details
Name: | inbk_DeferredStockRelatedToDirectorsDeferredStockPlanExercisedInPeriod
Namespace Prefix: | inbk_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition It represents the deferred stock rights granted to directors during the period related to deferred stock plan. + References No definition available. + Details
Name: | inbk_DeferredStockRelatedToDirectorsDeferredStockPlanGrantedInPeriod
Namespace Prefix: | inbk_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition It represents the outstanding number of deferred stock rights related to directors deferred stock plan. + References No definition available. + Details
Name: | inbk_DeferredStockRelatedToDirectorsDeferredStockPlanOutstandingNumber
Namespace Prefix: | inbk_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

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_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration