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Basis of Presentation - Additional Information (Detail)	Dec. 31, 2016
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%

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- Definition

Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]

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- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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