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Income Taxes	6 Months Ended
	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Note 11. Income Taxes For the three and six months ended June 30, 2017, the Company recorded a tax expense of $3.9 million, which was primarily due to the sale of the Company’s shares of Aduro. For the three and six months ended June 30, 2016, the Company recorded a tax expense of $1.0 million and $1.8 million, respectively, which was largely the result of changes in the fair value of the Company’s investments, primarily shares in Aduro.

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- Definition

The entire disclosure for income taxes. Disclosures may 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-URI http://asc.fasb.org/topic&trid=2144680

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