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Subsequent Events (Details) - Equity Incentive Plan 2018 [Member] - shares	Apr. 30, 2020	Jun. 30, 2018
Subsequent Events (Textual)
Shares authorized for reserve		4,000,000
Subsequent Event [Member]
Subsequent Events (Textual)
Registration of shares	4,000,000

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- Definition

Registration of shares.

+ References

No definition available.

+ Details

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Namespace Prefix:	dtss_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

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- Definition

Shares authorized for reserve.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

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- References

No definition available.

+ Details

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Namespace Prefix:	dtss_
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Period Type:	duration

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- Details

Name:	us-gaap_PlanNameAxis=dtss_EquityIncentivePlan2018Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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- Details

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