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Significant Accounting Policies - Summary of Estimated Useful Lives of Property and Equipment (Details)	12 Months Ended
	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

X

- Definition

Leasehold improvements term.

+ References

No definition available.

+ Details

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Namespace Prefix:	ecor_
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Balance Type:	na
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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

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Namespace Prefix:	us-gaap_
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X

- 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
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X

- Details

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Namespace Prefix:
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X

- Details

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X

- Details

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X

- Details

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Namespace Prefix:
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Period Type:

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: