2.2.0.25falsefalse2118100 - Disclosure - Subsequent Eventstruefalsefalse1falsefalseUSDfalsefalse4/1/2010 - 12/31/2010 USD ($) USD ($) / shares $D2011Q3YTDhttp://www.sec.gov/CIK0000815065duration2010-04-01T00:00:002010-12-31T00:00:00usdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170usdPerShareDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2true0ste_NotesToFinancialStatementsAbstractstefalsenadurationNotes to Financial Statements [Abstract]falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNotes to Financial Statements [Abstract]falsefalseNotes To Financial Statements [Abstract]3false0us-gaap_ScheduleOfSubsequentEventsTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Subsequent Events</font></div><div style="line-height:120%;text-indent:20px;"><font style="font-family:inherit;font-size:10pt;">&nbsp;</font></div><div style="line-height:120%;text-indent:20px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">We have evaluated subsequent events through the date the financial statements were filed with the SEC, noting no events that require adjustment of, or disclosure in, the consolidated financial statements for the period ended </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">December 31, 2010</font><font style="font-family:inherit;font-size:10pt;">, except for the February 2011 settlement of the SYSTEM 1 class action litigation described in Note 10 to our consolidated financial statements titled, "Contingencies." These financial statements should be read in conjunction with the consolidated financial statements and related notes included in the 2010 Annual Report on Form 10-K.</font></div><div style="line-height:120%;"><font style="font-family:inherit;font-size:10pt;">&nbsp;</font></div></div>Subsequent Events&nbsp;We have evaluated subsequent events through the date the financial statements were filed with the SEC, noting no events that requirefalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescribes disclosed significant events or transactions that occurred after the balance sheet date, but before the issuance of the financial statements. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, losses resulting from fire or flood, losses on receivables, significant realized and unrealized gains and losses that result from changes in quoted market prices of securities, declines in market prices of inventory, changes in authorized or issued debt (SEC), significant foreign exchange rate changes, substantial loans to insiders or affiliates, significant long-term investments, and substantial dividends not in the ordinary course of business.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 11 falsefalseSchedule of Subsequent Events [Text Block]12Subsequent EventsUnKnownUnKnownUnKnownUnKnownfalsetrue