LOAN (Details) (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended
Feb. 20, 2013 installment
Loan Agreement
Debt Instrument [Line Items]
Amount borrowed	$ 1,500
Minimum variable annual rate	5.25%
Variable rate basis	three-year constant maturity treasury rate
Basis spread on variable rate	5.00%
Number of installments for repayment	32
Minimum percentage of outstanding loan principal to be maintained as cash balance	125.00%
Percentage of aggregate amount of cash of consolidated entities to be held by entity that signed debt agreement	90.00%
Bank \| Series D preferred stock
Debt Instrument [Line Items]
Warrants issued to purchase preferred stock	7,332
Exercise price of warrants	6.14
Expiration term of warrants	10 years

Represents the number of equal installments the debt is to be repaid.

No definition available.

Name:	stdy_DebtInstrumentNumberOfInstallmentsForRepayment
Namespace Prefix:	stdy_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the minimum percentage of outstanding loan principal to be maintained as cash balance through maturity date of the loan

+ References

No definition available.

+ Details

Name:	stdy_MinimumPercentageOfOutstandingLoanPrincipalToBeMaintainedAsCashBalance
Namespace Prefix:	stdy_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the percentage of the aggregate amount of consolidated entities' cash to be held by entity that signed the debt agreement.

+ References

No definition available.

+ Details

Name:	stdy_PercentageOfAggregateAmountOfConsolidatedEntitiesCashToBeHeldByEntityThatSignedDebtAgreement
Namespace Prefix:	stdy_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the expiration term of warrants or rights.

+ References

No definition available.

+ Details

Name:	stdy_WarrantsOrRightsExpirationTerm
Namespace Prefix:	stdy_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the numbers of warrants issued to purchase convertible preferred stock.

+ References

No definition available.

+ Details

Name:	stdy_WarrantsOrRightsIssuedToPurchaseConvertiblePreferredStock
Namespace Prefix:	stdy_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ 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.(i)(4))

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

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph i

-Subparagraph 4

-Article 4

+ Details

Name:	us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights
Namespace Prefix:	us-gaap_
Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

+ Details

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

- Definition

Minimum contractual interest rate for funds borrowed, under the debt agreement.

+ 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_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

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

- Definition

The cash inflow from bank borrowing during the year.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585

+ Details

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

- Details

Name:	us-gaap_CounterpartyNameAxis=stdy_CommercialBankMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=stdy_LoanAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: