Income Taxes	6 Months Ended
Jun. 30, 2015
Income Tax Disclosure [Abstract]
Income Taxes	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. Our U.S. federal tax returns for 2011 and subsequent years remain open to full examination. Our California tax returns for 2010 and subsequent tax years remain open to full examination. Massachusetts tax returns for 2011 and subsequent years remain open to full examination. At June 30, 2015, our unrecognized tax benefit was $3.2 million, the recognition of which would reduce our income tax expense by $2.1 million. We do not expect that our unrecognized tax benefit will materially change in the next 12 months. We recognize interest and penalties related to income tax matters as part of income before income taxes. Interest and penalties were not material for the three and six months ended June 30, 2015.

Income Taxes

6 Months Ended

Jun. 30, 2015

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. Our U.S. federal tax returns for 2011 and subsequent years remain open to full examination. Our California tax returns for 2010 and subsequent tax years remain open to full examination. Massachusetts tax returns for 2011 and subsequent years remain open to full examination.

At June 30, 2015, our unrecognized tax benefit was $3.2 million, the recognition of which would reduce our income tax expense by $2.1 million. We do not expect that our unrecognized tax benefit will materially change in the next 12 months.

We recognize interest and penalties related to income tax matters as part of income before income taxes. Interest and penalties were not material for the three and six months ended June 30, 2015.