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Commitments and Contingencies (Details) - Schedule of lease-related assets and liabilities - USD ($) $ in Thousands | Sep. 30, 2025 | Mar. 31, 2025
--- | --- | ---
Liabilities |  |
Total Operating Lease Liabilities | $ 553 | $ 462
Operating lease right-of-use asset [Member] |  |
Assets |  |
Noncurrent | 526 | 435
Operating leases liabilities [Member] |  |
Liabilities |  |
Current | 293 | 187
Operating leases liabilities, net of current [Member] |  |
Liabilities |  |
Noncurrent | $ 260 | $ 275

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- Definition Operating lease liabilities. + References No definition available. + Details
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Namespace Prefix: | cnvs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Amount of lessee's right to use underlying asset under operating lease. + References No definition available. + Details
Name: | cnvs_OperatingLeaseRightOfUseAssets
Namespace Prefix: | cnvs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as current. + References No definition available. + Details
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Namespace Prefix: | cnvs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent. + References No definition available. + Details
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Namespace Prefix: | cnvs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Balance Type: |
Period Type: |