Reconciliation of Federal Income Taxes Computed at Statutory Rate with Income Taxes (Parenthetical) (Detail)	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Component Of Net Income Tax Assets And Liabilities [Line Items]
Income tax rate	35.00%	35.00%	35.00%

Effective Income Tax Rate Reconciliation, at US Federal Statutory Income Tax Rate

No definition available.

Name:	stc_EffectiveIncomeTaxRateReconciliationAtUnitedStatesFederalStatutoryIncomeTaxRate
Namespace Prefix:	stc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration