Subsequent Event	12 Months Ended
Dec. 31, 2019
Subsequent Events [Abstract]
Subsequent Event	Subsequent EventOn February 11, 2020, we announced the signing of an agreement to acquire the core assets, partnered programs and ion channel technology from Icagen for $15 million in cash. Icagen will also be entitled to receive up to an additional $25 million of cash payments based on certain revenue achievements. The transaction is subject to certain closing conditions, including a vote of Icagen stockholders, and is expected to close in April 2020.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

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