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v3.10.0.1

SELF-INSURANCE (Details Textual) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2016
Self insurance exposure for individual claims |  |  | $ 75
Minimum annual aggregate attachment point |  |  | $ 85
Self-insured employee health plan expenses | $ 1,026 |  |
Self Insured Expenses |  | $ 925 |

X
- Definition Represents the employer's minimum overall limit of claim liability, which is adjusted based on the size of the group insured, as of the balance sheet date. + References No definition available. + Details
Name: | basi_AnnualAggregateAttachmentPointMinimum
Namespace Prefix: | basi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Self Insurance Exposure For Individual Claims. + References No definition available. + Details
Name: | basi_SelfInsuranceExposureForIndividualClaims
Namespace Prefix: | basi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Self Insured Employee Health Plan Expenses. + References No definition available. + Details
Name: | basi_SelfInsuredEmployeeHealthPlanExpenses
Namespace Prefix: | basi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition It represents the amount of self insured expenses. + References No definition available. + Details
Name: | basi_SelfInsuredExpenses
Namespace Prefix: | basi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration