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Leases - Additional Information (Detail) | 9 Months Ended
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Sep. 30, 2021
Lessee Lease Description [Line Items] |
Lessee operating and financing lease existence of option to terminate | true
Lessee operating and financing leases, period of options to terminate | 1 year
Lessee, operating and finance lease, existence of option to extend | true
Minimum [Member] |
Lessee Lease Description [Line Items] |
Operating and financing leases, remaining lease terms | 1 year
Maximum [Member] |
Lessee Lease Description [Line Items] |
Operating and financing leases, remaining lease terms | 7 years

X
- Definition Lessee operating and finance lease existence of option to extend. + References No definition available. + Details
Name: | osur_LesseeOperatingAndFinanceLeaseExistenceOfOptionToExtend
Namespace Prefix: | osur_
Data Type: | xbrli:booleanItemType
Balance Type: | na
Period Type: | duration

X
- Definition Lessee, operating and finance leases, period of options to terminate. + References No definition available. + Details
Name: | osur_LesseeOperatingAndFinanceLeasesPeriodOfOptionsToTerminate
Namespace Prefix: | osur_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Lessee, operating and financing lease existence of option to terminate. + References No definition available. + Details
Name: | osur_LesseeOperatingAndFinancingLeaseExistenceOfOptionToTerminate
Namespace Prefix: | osur_
Data Type: | xbrli:booleanItemType
Balance Type: | na
Period Type: | duration

X
- Definition Lessee, operating and financing lease, remaining lease term. + References No definition available. + Details
Name: | osur_LesseeOperatingAndFinancingLeaseRemainingLeaseTerm
Namespace Prefix: | osur_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_LesseeLeaseDescriptionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |