Income Taxes	6 Months Ended
Jun. 30, 2012
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes For the three months ended June 30, 2012, the Company recorded an income tax benefit of approximately $0.3 million, of which $0.2 million was allocated to continuing operations, with the balance of $0.1 million allocated to discontinued operations. For the three months ended June 30, 2011, the Company recorded an income tax provision of $2.5 million, which was comprised of a tax provision of approximately $3.0 million allocated to continuing operations and a tax benefit of $0.5 million allocated to discontinued operations. The income tax benefit during the three months ended June 30, 2012 represented the federal and state statutory rates adjusted for non-deductible stock compensation expense. The income tax provision during the three months ended June 30, 2011 reflects the federal and state statutory tax rates adjusted for non-deductible stock compensation expense partially offset by research and development credits. For the six months ended June 30, 2012, the Company recorded an income tax benefit of approximately $1.1 million, of which $0.3 million was allocated to continuing operations, with the balance of $0.8 million allocated to discontinued operations. For the six months ended June 30, 2011, the Company recorded an income tax provision of approximately $1.7 million, which was comprised of a tax provision of approximately $3.2 million allocated to continuing operations and a tax benefit of $1.5 million allocated to discontinued operations. The income tax benefit recorded during the six months ended June 30, 2012 represented the federal and state statutory rates adjusted for non-deductible stock compensation expense. The income tax provision recorded during the six months ended June 30, 2011 reflected the federal and state statutory tax rates adjusted for non-deductible stock compensation expense partially offset by research and development credits. As of June 30, 2012, the amount of interest and penalties associated with the unrecognized tax benefits were insignificant. The Company does not expect any significant increases or decreases to its unrecognized tax benefits in the next 12 months.

Income Taxes

6 Months Ended

Jun. 30, 2012

For the three months ended June 30, 2012, the Company recorded an income tax benefit of approximately $0.3 million, of which $0.2 million was allocated to continuing operations, with the balance of $0.1 million allocated to discontinued operations. For the three months ended June 30, 2011, the Company recorded an income tax provision of $2.5 million, which was comprised of a tax provision of approximately $3.0 million allocated to continuing operations and a tax benefit of $0.5 million allocated to discontinued operations. The income tax benefit during the three months ended June 30, 2012 represented the federal and state statutory rates adjusted for non-deductible stock compensation expense. The income tax provision during the three months ended June 30, 2011 reflects the federal and state statutory tax rates adjusted for non-deductible stock compensation expense partially offset by research and development credits.

For the six months ended June 30, 2012, the Company recorded an income tax benefit of approximately $1.1 million, of which $0.3 million was allocated to continuing operations, with the balance of $0.8 million allocated to discontinued operations. For the six months ended June 30, 2011, the Company recorded an income tax provision of approximately $1.7 million, which was comprised of a tax provision of approximately $3.2 million allocated to continuing operations and a tax benefit of $1.5 million allocated to discontinued operations. The income tax benefit recorded during the six months ended June 30, 2012 represented the federal and state statutory rates adjusted for non-deductible stock compensation expense. The income tax provision recorded during the six months ended June 30, 2011 reflected the federal and state statutory tax rates adjusted for non-deductible stock compensation expense partially offset by research and development credits.

As of June 30, 2012, the amount of interest and penalties associated with the unrecognized tax benefits were insignificant. The Company does not expect any significant increases or decreases to its unrecognized tax benefits in the next 12 months.