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Subsequent Events	12 Months Ended
	Dec. 31, 2018
Subsequent Events [Abstract]
Subsequent Events	(22) Subsequent Events On February 28, 2019, the Joint Research Committee related to the Company’s collaboration with AbbVie concluded that the remaining milestone of $2.5 million under the Second Amendment in the Company’s collaboration with AbbVie was achieved. Related revenue will be recognized as the research and development services are provided using an input method, according to the full time equivalents incurred over the third phase of the research plan.

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- Definition

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.

+ References

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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