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v3.25.2

Note 10 - Commitments and Contingencies (Details Textual) $ in Millions | Jun. 30, 2025 USD ($)
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Long-Term Purchase Commitment, Termination Fee | $ 3.9

X
- Definition Represents the amount of termination fee on a long-term purchase commitment. + References No definition available. + Details
Name: | omer_LongtermPurchaseCommitmentTerminationFee
Namespace Prefix: | omer_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant