2.2.0.25falsefalse120 - Disclosure - Income Taxestruefalsefalse1falsefalseUSDfalsefalse1/1/2011 - 3/31/2011 USD ($) USD ($) / shares $eol_PE9839----1110-Q0003_STD_90_20110331_0http://www.sec.gov/CIK0000719739duration2011-01-01T00:00:002011-03-31T00:00:00iso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170iso4217_USD_per_sharesDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instanceshares0USDUSD$5false0us-gaap_IncomeTaxDisclosureTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00<div> 12. Income Taxes We are subject to income tax in the U.S. federal jurisdiction and various state and foreign jurisdictions and have identified our federal tax return and tax returns in California and Massachusetts as “major” tax filings. U.S. federal tax examinations through 1998 have been concluded. The U.S. federal tax return for 2006 and subsequent years remain open to examination by the Internal Revenue Service. Our California and Massachusetts tax returns for the years 2006 and 2007, respectively, and subsequent years remain open to examination. At March 31, 2011, our unrecognized tax benefit was $0.4 million, the recognition of which would reduce our income tax expense by $0.3 million. Total accrued interest and penalties at March 31, 2011 were $0.1 million. We expect that our unrecognized tax benefit will change in the next 12 months; however we do not expect the change to have a significant impact on our financial position or our results of operations. </div>12. Income Taxes We are subject to income tax in the U.S. federal jurisdiction and various state and foreign jurisdictions and have identified our federalfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDescription containing the entire income tax disclosure. Examples include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information. This element may be used as a single block of text to encapsulate the entire disclosure including data and tables.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 136, 172 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 43, 44, 45, 46, 47, 48, 49 falsefalseIncome Taxes11Income TaxesUnKnownUnKnownUnKnownUnKnownfalsetrue