Percentage of interest for loans receivable.

No definition available.

Name:	sdpi_LoansReceivableVariableInterestRate
Namespace Prefix:	sdpi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents extended maturity date of notes receivable.

+ References

No definition available.

+ Details

Name:	sdpi_NotesReceivableExtendedMaturityDateOne
Namespace Prefix:	sdpi_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents extended maturity date of notes receivable.

+ References

No definition available.

+ Details

Name:	sdpi_NotesReceivableExtendedMaturityDateTwo
Namespace Prefix:	sdpi_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents one time payment to extend the maturity date.

+ References

No definition available.

+ Details

Name:	sdpi_NotesReceivableOneTimePaymentToExtendMaturityDate
Namespace Prefix:	sdpi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents market value of pledged shares against notes receivable.

+ References

No definition available.

+ Details

Name:	sdpi_NotesReceivablePledgedSharesMarketValue
Namespace Prefix:	sdpi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents per share price of pledged shares against notes receivable.

+ References

No definition available.

+ Details

Name:	sdpi_NotesReceivablePledgedSharesPricePerShare
Namespace Prefix:	sdpi_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of shares pledged against repayment of notes.

+ References

No definition available.

+ Details

Name:	sdpi_PledgedSharesNotesReceivable
Namespace Prefix:	sdpi_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of other increase (decrease) in additional paid in capital (APIC).

+ References

No definition available.

+ Details

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

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(2))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentMaturityDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage points (also referred to as 'margin') added to the reference rate as stated in the loan agreement and used to compute the variable rate on the loans receivable. For instance, the loan agreement might state that the interest rate the borrower is obligated to pay is the London Interbank Offered Rate (LIBOR) plus three quarters (3/4) of a percentage point adjusted quarterly (each three months). LIBOR in this example is the index or reference rate, 3/4 percentage point is the margin, the reference rate plus the margin is the fully indexed rate. This element would be used to report separately the margin.

+ References

No definition available.

+ Details

Name:	us-gaap_LoansReceivableBasisSpreadOnVariableRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amounts due from parties associated with the reporting entity as evidenced by a written promise to pay, due within 1 year (or 1 business cycle).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(k)(1))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 3

-Subparagraph a

-Article 5

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph k

-Subparagraph 1

-Article 4

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.3(a)(2))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Related Parties

-URI http://asc.fasb.org/extlink&oid=16382449

+ Details

Name:	us-gaap_NotesReceivableRelatedPartiesCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Date the receivable or note with imputed interest is due, in CCYY-MM-DD format.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

+ Details

Name:	us-gaap_ReceivableWithImputedInterestDueDates
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Details

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

- Definition

Income earned by providing the use of assets to an outside party in exchange for a payment or series of payments that is nonoperating in nature.

+ 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 210.5-03.7)

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

+ Details

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

- Details

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

- Details

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

RELATED PARTY TRANSACTIONS (Details Textual) (USD $)	3 Months Ended
RELATED PARTY TRANSACTIONS (Details Textual) (USD $)	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	May 30, 2014
Related Party Transaction [Line Items]
Notes Receivable, Related Parties, Current	$ 8,296,717		$ 8,296,717
Superior Auto Body [Member]
Related Party Transaction [Line Items]
Rental Income, Nonoperating	49,975	52,976
Tronco Energy Corporation [Member]
Related Party Transaction [Line Items]
Notes Receivable, Related Parties, Current	8,296,717			8,300,000
Pledged Shares, Notes Receivable	8,814,860
Notes Receivable Pledged Shares, Price Per Share	$ 3.68
Notes Receivable Pledged Shares, Market Value	30,000,000
Notes Receivable, Extended Maturity Date One	Jun. 30, 2014
Notes Receivable, One Time Payment To Extend Maturity Date	68,881
Notes Receivable, Extended Maturity Date Two	Jul. 31, 2014
Loans Receivable, Basis Spread on Variable Rate	0.25%
Loans Receivable, Variable Interest Rate	3.25%
Receivable with Imputed Interest, Due Date	Dec. 31, 2014
Debt Instrument, Maturity Date	Dec. 31, 2015
Adjustments to Additional Paid in Capital, Other	$ 8,814,860