XML 73 R57.htm IDEA: XBRL DOCUMENT
v3.21.2

STOCKHOLDERS' EQUITY - Share Repurchase Program (Details) - shares | Jun. 30, 2021 | Aug. 31, 2020 | Jun. 30, 2020 | Apr. 30, 2020 | Jun. 30, 2019
--- | --- | --- | --- | --- | ---
Share Repurchase Program |  |  |  |  |
Number of repurchased shares authorized | 452,005 | 3,000,000 | 562,707 | 1,000,000 | 288,316
Number of shares available for repurchase | 2,547,995 |  |  |  |

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