XML 13 R5.htm IDEA: XBRL DOCUMENT v3.7.0.1

Unaudited Interim Condensed Consolidated Statements of Comprehensive Loss (Parentheticals) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Research and development expense, Patent cost	$ 42,259

X

- Definition

Represents the amount of research and development expense related to patent acquired settled by shares issuance.

+ References

No definition available.

+ Details

Name:	bysi_ResearchAndDevelopmentExpensesSettledBySharesIssuance
Namespace Prefix:	bysi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration