SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Finance lease receivables, net (Details) - USD ($)	9 Months Ended	12 Months Ended
Dec. 31, 2019	Mar. 31, 2019
Capital Leases, Net Investment in Sales Type Leases [Abstract]
Gross minimum lease payments receivable	$ 1,637,763	$ 40,023
Less: Amounts representing estimated executory costs	0	0
Minimum lease payments receivable	1,637,763	40,023
Less Allowance for uncollectible minimum lease payments receivable	0	0
Net minimum lease payments receivable	1,637,763	40,023
Estimated residual value of leased automobiles	0	0
Less: Unearned interest	(460,556)	(7,471)
Financing lease receivables, net	1,177,207	32,552
Finance lease receivables, net, current portion	428,958	10,254
Finance lease receivables, net, long-term portion	748,249	22,298
Sales-type and Direct Financing Leases, Lease Receivable, Fiscal Year Maturity [Abstract]
Twelve months ending December 31, 2020	559,494
Twelve months ending December 31, 2021	550,856
Twelve months ending December 31, 2022	407,269
Twelve months ending December 31, 2023	120,144
Total	$ 1,637,763	$ 40,023

The amount represents Finance Lease receivable current.

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount represents Finance Lease receivable noncurrent.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount represents finance lease receivable unearned interest.

+ References

No definition available.

+ Details

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Namespace Prefix:	aihs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount represents minimum finance lease payments receivable.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The estimate of minimum payments on sales-type leases that are probable of not being collected as of the balance sheet date.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

- Definition

The amount represents net minimum finance lease payments receivable.

+ References

No definition available.

+ Details

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Namespace Prefix:	aihs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
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- References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
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- Definition

Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=119202524&loc=SL77919391-209981

+ Details

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- Definition

Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases in fourth fiscal year following latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

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Balance Type:	debit
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- Definition

Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases in the next fiscal year following latest fiscal year. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

+ References

+ Details

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- Definition

Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases in third fiscal year following latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest statement of financial position date.

+ References

+ Details

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- Definition

Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases in second fiscal year following latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest statement of financial position date.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Amount of sales-type lease initial direct cost recognized as expense at commencement date.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 25
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=118948219&loc=SL77919096-209958

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

Amount of net investment in sales-type lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=119202524&loc=SL77919379-209981

+ Details

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Balance Type:	debit
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- Definition

Present value expected to be derived from underlying asset following end of lease term not guaranteed by lessee or other third party unrelated to lessor.

+ References

+ Details

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