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Significant Accounting Policies - Summary of Estimated Useful Lives of Property and Equipment (Details) | 12 Months Ended
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Dec. 31, 2019
Property Plant And Equipment [Line Items] |
Leasehold improvements | Lease term
Machinery and Equipment | Minimum |
Property Plant And Equipment [Line Items] |
Property and equipment, estimated useful lives | 3 years
Machinery and Equipment | Maximum |
Property Plant And Equipment [Line Items] |
Property and equipment, estimated useful lives | 15 years
Furniture and Fixtures | Minimum |
Property Plant And Equipment [Line Items] |
Property and equipment, estimated useful lives | 5 years
Furniture and Fixtures | Maximum |
Property Plant And Equipment [Line Items] |
Property and equipment, estimated useful lives | 10 years
Computer Equipment |
Property Plant And Equipment [Line Items] |
Property and equipment, estimated useful lives | 5 years

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- Definition Leasehold improvements term. + References No definition available. + Details
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Namespace Prefix: | ecor_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- 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
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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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: |
Data Type: | na
Balance Type: |
Period Type: |

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