XML 63 R48.htm IDEA: XBRL DOCUMENT
v3.24.1.u1

Stockholders' Equity - Additional information (Details) - Common stock - shares | Mar. 31, 2024 | Sep. 30, 2022
--- | --- | ---
Employee Stock Purchase Plan and Stock Repurchase Program |  |
Number of repurchased shares authorized |  | 2,000,000
Number of shares available for repurchase | 1,721,870 |

X
- References No definition available. + Details
Name: | osis_ShareRepurchaseProgramAbstract
Namespace Prefix: | osis_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_CommonStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |