Income Taxes	6 Months Ended
Jun. 30, 2016
Income Tax Disclosure [Abstract]
Income Taxes	4. Income Taxes The Company provides for income taxes at the end of each interim period based on the estimated effective tax rate for the full fiscal year in addition to discrete events which impact the interim period. The Company’s effective tax rate differs from the U.S. statutory rate principally due to the rate impact of uncertain tax positions, valuation allowance changes and state taxes. Cumulative adjustments to the tax provision are recorded in the interim period in which a change in the estimated annual effective rate is determined. The Company’s tax provision was $0.2 million and $0.6 million for the three and six months ended June 30, 2016, respectively, compared to a tax provision of $1.2 million for the three and six months ended June 30, 2015. In connection with the Company’s acquisition of the medical imaging business from Bristol-Myers Squibb, or BMS, in 2008, the Company obtained a tax indemnification agreement with BMS related to certain tax obligations arising prior to the acquisition of the Company, for which the Company has the primary legal obligation. The tax indemnification receivable is recognized within other noncurrent assets. The changes in the tax indemnification asset are recognized within other income (expense), net in the condensed consolidated statement of operations. In accordance with the Company’s accounting policy, the change in the tax liability and penalties and interest associated with these obligations (net of any offsetting federal or state benefit) is recognized within the tax provision. Accordingly, as these reserves change, adjustments are included in the tax provision while the offsetting adjustment is included in other income (expense), net. Assuming that the receivable from BMS continues to be considered recoverable by the Company, there is no net effect on earnings related to these liabilities and no net cash outflows. During the first quarter of 2016, the Company early adopted ASU No. 2015-17, Income Taxes (Topic 740): Balance Sheet Classification of Deferred Taxes on a retrospective basis. This standard requires all deferred taxes and liabilities, and any related valuation allowances, to be classified as non-current on the balance sheet. Adoption of this standard resulted in the reclassification of $0.1 million of current deferred tax assets to noncurrent deferred tax assets and $0.2 million of current deferred tax liabilities to noncurrent deferred tax liabilities on the balance sheet at December 31, 2015.

4. Income Taxes

The Company provides for income taxes at the end of each interim period based on the estimated effective tax rate for the full fiscal year in addition to discrete events which impact the interim period. The Company’s effective tax rate differs from the U.S. statutory rate principally due to the rate impact of uncertain tax positions, valuation allowance changes and state taxes. Cumulative adjustments to the tax provision are recorded in the interim period in which a change in the estimated annual effective rate is determined. The Company’s tax provision was $0.2 million and $0.6 million for the three and six months ended June 30, 2016, respectively, compared to a tax provision of $1.2 million for the three and six months ended June 30, 2015.

In connection with the Company’s acquisition of the medical imaging business from Bristol-Myers Squibb, or BMS, in 2008, the Company obtained a tax indemnification agreement with BMS related to certain tax obligations arising prior to the acquisition of the Company, for which the Company has the primary legal obligation. The tax indemnification receivable is recognized within other noncurrent assets. The changes in the tax indemnification asset are recognized within other income (expense), net in the condensed consolidated statement of operations. In accordance with the Company’s accounting policy, the change in the tax liability and penalties and interest associated with these obligations (net of any offsetting federal or state benefit) is recognized within the tax provision. Accordingly, as these reserves change, adjustments are included in the tax provision while the offsetting adjustment is included in other income (expense), net. Assuming that the receivable from BMS continues to be considered recoverable by the Company, there is no net effect on earnings related to these liabilities and no net cash outflows.

During the first quarter of 2016, the Company early adopted ASU No. 2015-17, Income Taxes (Topic 740): Balance Sheet Classification of Deferred Taxes on a retrospective basis. This standard requires all deferred taxes and liabilities, and any related valuation allowances, to be classified as non-current on the balance sheet. Adoption of this standard resulted in the reclassification of $0.1 million of current deferred tax assets to noncurrent deferred tax assets and $0.2 million of current deferred tax liabilities to noncurrent deferred tax liabilities on the balance sheet at December 31, 2015.