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Basis of Presentation - Additional Information (Detail)
Mar. 31, 2017
Assurex [Member]  
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]  
Non controlling interest ownership percentage by parent 85.00%
Centre For Addiction And Mental Health [Member]  
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]  
Non controlling interest ownership percentage by noncontrolling owners 15.00%