Amortization of Debt Issuance Costs

No definition available.

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- Definition

Debt Instrument, Covenant, Aggregate Annual Capital Expenditures, Maximum

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Covenant, Ratio Of EBITDA To Fixed Charges, Minimum

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Covenant, Ratio Of Total Indebtedness To EBITDA, Maximum

+ References

No definition available.

+ Details

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- Definition

Debt Issuance Cost

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 5

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-SubTopic 10

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-Paragraph 3

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- Definition

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

+ References

No definition available.

+ Details

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

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-Section 55

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- Definition

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

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

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+ Details

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- Details

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- Definition

Amount of the cost of borrowed funds accounted for as interest expense for debt.

+ 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)

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-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 8

-Article 5

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

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-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

-Article 5

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-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

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+ Details

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- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

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-Publisher FASB

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-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

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-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

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- Definition

Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year.

+ References

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-Publisher FASB

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-Topic 470

-SubTopic 10

-Section 50

-Paragraph 1

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- Definition

Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year.

+ References

+ Details

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- Definition

Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year.

+ References

+ Details

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- Definition

Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year.

+ References

+ Details

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- Definition

Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year.

+ References

+ Details

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- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16(a))

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-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

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Notes payable, convertible senior notes and line of credit - Additional Information (Detail) (USD $)	12 Months Ended			0 Months Ended	1 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Oct. 14, 2014	Oct. 31, 2014	Oct. 31, 2009
Debt Instrument [Line Items]
Principal payments on notes in 2015	$ 5,400,000
Principal payments on notes in 2016	100,000
Principal payments on notes in 2017	100,000
Principal payments on notes in 2018	0
Principal payments on notes in 2019	60,000,000
Notes payable, debt issuance cost	3,300,000stc_DebtIssuanceCost
Notes payable, amortization of debt issuance costs	300,000stc_AmortizationOfDebtIssuanceCosts	400,000stc_AmortizationOfDebtIssuanceCosts	600,000stc_AmortizationOfDebtIssuanceCosts
Notes payable, interest expense	1,300,000us-gaap_InterestExpenseDebt	2,000,000us-gaap_InterestExpenseDebt	4,200,000us-gaap_InterestExpenseDebt
Line of Credit
Debt Instrument [Line Items]
Bank line of credit facility amount	125,000,000
Bank line of credit facility, outstanding	60,000,000
Fixed charge ratio, minimum	1.25
Leverage ratio, maximum	2.25
Maximum aggregate annual capital expenditures allowed	20,000,000
Line of Credit \| Base Rate \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate, line of credit	0.50%
Line of Credit \| Base Rate \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate, line of credit	1.00%
Line of Credit \| LIBOR \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate, line of credit	1.50%
Line of Credit \| LIBOR \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate, line of credit	2.00%
Convertible Notes Payable
Debt Instrument [Line Items]
Convertible senior notes, aggregate principal amount						65,000,000.0
Convertible senior notes, interest rate						6.00%
Convertible senior notes, carrying amount		$ 37,800,000		$ 27,200,000	$ 27,200,000
Convertible senior notes, shares issued during conversion (in shares)		3,094,440		2,100,000	2,111,017