Area of a real estate property.

No definition available.

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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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- Definition

The loss recognized on termination of a contract.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 912
-SubTopic 275
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=84167019&loc=d3e54681-109401

+ Details

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- Definition

Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 10
-Section 55
-Paragraph 40
-Subparagraph (Note 3)
-URI http://asc.fasb.org/extlink&oid=82846649&loc=d3e38371-112697

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41502-112717

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- Definition

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41499-112717

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Balance Type:	debit
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- Definition

The amount of an asset, typically cash, provided to a counterparty to provide certain assurance of performance by the entity pursuant to the terms of a written or oral agreement, such as a lease.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.8,17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

operating leases, landlord reimbursement for lease improvements

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

operating leases, landlord reimb for lease improvements, additional payments

+ References

No definition available.

+ Details

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Namespace Prefix:	yten_
Data Type:	xbrli:monetaryItemType
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- Details

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- Details

Name:	srt_CounterpartyNameAxis=yten_CJCheilJedangCorporationMember
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COMMITMENTS AND CONTINGENCIES - Narrative (Details) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($) ft²	Oct. 31, 2016 USD ($) ft²	Jan. 20, 2016 ft²
Loss Contingencies [Line Items]
Rent expense	$ 272	$ 268	$ 512	$ 448
Area of real estate property \| ft²						29,622
Security deposit						$ 307
Operating leases, landlord reimbursement for lease improvements					$ 889
Operating leases, landlord reimb for lease improvements, additional payments					$ 444
Loss on contract termination		$ 2,641
Subsidiaries
Loss Contingencies [Line Items]
Area of real estate property \| ft²								4,100
Six Hundred Fifty Suffolk Street, Lowell, Massachusetts
Loss Contingencies [Line Items]
Area of real estate property \| ft²								13,702
CJ CheilJedang Corporation
Loss Contingencies [Line Items]
Area of real estate property \| ft²							9,874
Security deposit							$ 103
Future minimum payments due	$ 6,404		$ 6,404