2.2.0.7 false Subsequent Events 0212 - Disclosure - Subsequent Events true false false false 1 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 USDEPS Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 $ 2 Subsequent Events [Abstract] 0 artg_SubsequentEventsAbstract artg false na duration Subsequent Events. false false false false false true false false false false false false 1 false false false false 0 0 false false false xbrli:stringItemType string Subsequent Events. false 3 Subsequent Events 1 us-gaap_ScheduleOfSubsequentEventsTextBlock us-gaap true na duration No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0   <div style="font-family: 'Times New Roman',Times,serif"> <div align="left" style="font-size: 10pt; margin-top: 12pt"><b>(12) Subsequent Events</b> </div> <div align="left" style="font-size: 10pt; margin-top: 6pt"><i>Merger Agreement with Oracle (Non-recognized subsequent event)</i> </div> <div align="left" style="font-size: 10pt; margin-top: 6pt">     On November 2, 2010, ATG, Oracle Corporation, a Delaware corporation (“Oracle”), and Amsterdam Acquisition Sub Corporation, a Delaware corporation and wholly-owned subsidiary of Oracle (“Merger Sub”), entered into an Agreement and Plan of Merger (the “Merger Agreement”), pursuant to which, subject to satisfaction or waiver of the conditions therein, Merger Sub will merge with and into ATG (the “Merger”) with ATG surviving as a wholly-owned subsidiary of Oracle. A description of the Merger Agreement is contained in the Company’s Current Report on Form 8-K filed with the SEC on November 2, 2010, and a copy of the Merger Agreement is attached thereto as Exhibit 2.1. </div> <div align="left" style="font-size: 10pt; margin-top: 6pt"><i>Shareholder Lawsuit (Non-recognized subsequent event)</i> </div> <div align="left" style="font-size: 10pt; margin-top: 6pt">     On November 4, 2010, a putative shareholder class action lawsuit was filed in the Court of Chancery in the State of Delaware in and for New Castle County (Cronenwett v. Art Technology Group, Inc. et al) naming the Company and its directors, as well as Oracle Corporation and its wholly-owned subsidiary Amsterdam Acquisition Sub Corporation, as defendants. The complaint seeks to enjoin the proposed acquisition of the Company by Oracle Corporation and alleges claims for breach of fiduciary duty against the Company’s directors and for aiding and abetting a breach of fiduciary duty against Oracle Corporation and Amsterdam Acquisition Sub Corporation. The complaint generally alleges that the consideration offered in the proposed transaction is unfair and inadequate. The Company intends to defend this case vigorously. There can be no assurance, however, that the Company will be successful in its defense of this action. It is not known when or on what basis the action will be resolved. </div> </div>  <!-- Begin Block Tagged Note false false false us-types:textBlockItemType textblock Describes 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 false 1 2 false UnKnown UnKnown UnKnown false true