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Long-Term Investments (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Aug. 31, 2017
Ownership percentage				73.00%
Rgene Corporation [Member]
Ownership percentage		23.90%
Accounting treatment		Equity Method
Braingenesis Biotechnology Co., Ltd. [Member]
Ownership percentage	0.17%	0.17%
Accounting treatment	Cost Method
Genepharm Biotech Corporation [Member]
Ownership percentage	0.72%	0.72%
Accounting treatment	Cost Method
BioHopeKing Corporation [Member]
Ownership percentage	7.13%	7.13%
Accounting treatment	Cost Method
BioFirst Corporation [Member]
Ownership percentage	16.14%	15.84%
Accounting treatment	Equity Method
Rgene [Member]
Ownership percentage	31.63%	31.63%
Accounting treatment	Equity Method

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

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