XML 69 R58.htm IDEA: XBRL DOCUMENT
v3.21.2

CONCENTRATIONS OF CREDIT AND SALES RISK (Details Narrative) - USD ($) | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Aug. 31, 2021 | Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Mar. 31, 2021
Concentration Risk [Line Items] |  |  |  |  |  |
Damaged goods | $ 236,000 |  |  |  |  |
Three Customers [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member] |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Concentration of sales risk, percentage |  |  |  | 69.00% |  |
Three Customers [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member] | North America [Member] |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Concentration of sales risk, percentage |  |  |  |  |  | 70.00%
Four Customers [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member] | North America [Member] |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Concentration of sales risk, percentage |  |  |  |  |  | 10.00%
Customer One [Member] | Revenue Benchmark [Member] | Customer Concentration Risk [Member] |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Concentration of sales risk, percentage |  | 49.00% | 46.00% |  | 43.00% |
Customer Two [Member] | Revenue Benchmark [Member] | Customer Concentration Risk [Member] |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Concentration of sales risk, percentage |  | 16.00% | 20.00% | 16.00% | 20.00% |
Customer Three [Member] | Revenue Benchmark [Member] | Customer Concentration Risk [Member] |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Concentration of sales risk, percentage |  | 12.00% | 10.00% | 14.00% | 14.00% |
Customer Four [Member] | Revenue Benchmark [Member] | Customer Concentration Risk [Member] |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Concentration of sales risk, percentage |  |  |  | 48.00% |  |

X
- Definition Damaged goods. + References No definition available. + Details
Name: | SMDM_DamagedGoods
Namespace Prefix: | SMDM_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9054-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=123594938&loc=d3e13531-108611 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123594938&loc=d3e13537-108611 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592 + Details
Name: | us-gaap_ConcentrationRiskPercentage1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_MajorCustomersAxis=SMDM_ThreeCustomersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_AccountsReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CustomerConcentrationRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=srt_NorthAmericaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MajorCustomersAxis=SMDM_FourCustomersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MajorCustomersAxis=SMDM_CustomerOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesRevenueNetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MajorCustomersAxis=SMDM_CustomerTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MajorCustomersAxis=SMDM_CustomerThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MajorCustomersAxis=SMDM_CustomerFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |