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

The minimum amount the entity agreed to spend under the long-term purchase commitment.

No definition available.

Name:	us-gaap_LongTermPurchaseCommitmentAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Minimum volume to be purchased under the commitment agreement.

No definition available.

Name:	yswy_LongTermPurchaseCommitmentMinimumVolumeCommitted
Namespace Prefix:	yswy_
Data Type:	dtr-types:volumeItemType
Balance Type:	na
Period Type:	instant

Volume that must be purchased within the remainder of fiscal year of the agreement to avoid penalties or unfavorable effects on pricing, among other adverse consequences.

No definition available.

Name:	yswy_LongTermPurchaseCommitmentMinimumVolumeRequiredRemainderOfFiscalYear
Namespace Prefix:	yswy_
Data Type:	dtr-types:volumeItemType
Balance Type:	na
Period Type:	instant

Volume that must be purchased in fifth year following the current fiscal year of the agreement to avoid penalties or unfavorable effects on pricing, among other adverse consequences.

No definition available.

Name:	yswy_LongTermPurchaseCommitmentMinimumVolumeRequiredYearFive
Namespace Prefix:	yswy_
Data Type:	dtr-types:volumeItemType
Balance Type:	na
Period Type:	instant

Volume that must be purchased in fourth year following the current fiscal year of the agreement to avoid penalties or unfavorable effects on pricing, among other adverse consequences.

No definition available.

Name:	yswy_LongTermPurchaseCommitmentMinimumVolumeRequiredYearFour
Namespace Prefix:	yswy_
Data Type:	dtr-types:volumeItemType
Balance Type:	na
Period Type:	instant

Volume that must be purchased within next twelve months following the current fiscal year of the agreement to avoid penalties or unfavorable effects on pricing, among other adverse consequences.

No definition available.

Name:	yswy_LongTermPurchaseCommitmentMinimumVolumeRequiredYearOne
Namespace Prefix:	yswy_
Data Type:	dtr-types:volumeItemType
Balance Type:	na
Period Type:	instant

Volume that must be purchased in third year following the current fiscal year of the agreement to avoid penalties or unfavorable effects on pricing, among other adverse consequences.

No definition available.

Name:	yswy_LongTermPurchaseCommitmentMinimumVolumeRequiredYearThree
Namespace Prefix:	yswy_
Data Type:	dtr-types:volumeItemType
Balance Type:	na
Period Type:	instant

Volume that must be purchased in second year following the current fiscal year of the agreement to avoid penalties or unfavorable effects on pricing, among other adverse consequences.

No definition available.