16. Segmented information (Detail) - The Company has two reportable segments: gastrointestinal clinical services and addiction and rehabi (USD $)	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011
	$ 1,874,105	$ 1,160,284
	16,380	13,674
	87,226	98,888
	(154,990)	(2,192,838)
	$ 531,662	$ 561,545

Amount of interest revenue net of interest expense for the reportable segment. Reporting interest revenue net of interest expense is permitted only when a majority of the segment's revenues are from interest and the chief operating decision maker relies primarily on net interest revenue to assess the performance of the segment and make decisions about resources to be allocated to the segment.

No definition available.

Name:	us-gaap_InterestRevenueExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration