It represents the term to pay the lease amounts.

No definition available.

Name:	smdm_LeaseTerm
Namespace Prefix:	smdm_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

It represents the capital lease at an effective interest rate.

+ References

No definition available.

+ Details

Name:	smdm_LongTermCapitalLeaseInterestRate
Namespace Prefix:	smdm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	smdm_LongTermCapitalLeaseLineItems
Namespace Prefix:	smdm_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

It represents the lease amount required for monthly payments.

+ References

No definition available.

+ Details

Name:	smdm_MonthlyLeasePayments
Namespace Prefix:	smdm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The increase during the period in capital lease obligations due to entering into new capital leases.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

+ Details

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

- Definition

Present value of minimum lease payments for capital leases net of executory costs, including amounts paid by the lessee to the lessor for insurance, maintenance and taxes.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737

+ Details

Name:	us-gaap_CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount, during the lease term, of each minimum [capital] lease payment allocated to interest expense so as to produce a constant periodic rate of interest on the remaining balance of the capital lease obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.8)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 30

-Section 35

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=6916424&loc=d3e43161-112731

+ Details

Name:	us-gaap_InterestExpenseLesseeAssetsUnderCapitalLease
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=smdm_WellsFargoEquipmentFinanceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

LONG-TERM CAPITAL LEASE (Details Textual) (USD $)	3 Months Ended		9 Months Ended		0 Months Ended	1 Months Ended
LONG-TERM CAPITAL LEASE (Details Textual) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Apr. 13, 2013	May 31, 2013	Apr. 30, 2013	Mar. 31, 2014
Long Term Capital Lease [Line Items]
Capital Lease Obligations Incurred			$ 0us-gaap_CapitalLeaseObligationsIncurred	$ 36,388us-gaap_CapitalLeaseObligationsIncurred
Interest Expense, Lessee, Assets under Capital Lease	211	343	732	986
Capital Leases, Future Minimum Payments, Present Value of Net Minimum Payments, Total	16,776		16,776					25,782
Wells Fargo Equipment Finance [Member]
Long Term Capital Lease [Line Items]
Capital Lease Obligations Incurred					36,388
Monthly Lease Payments						$ 1,082
Lease term						36 months
Long Term Capital Lease Interest Rate							4.50%