Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Equity securities categorized neither as held-to-maturity nor trading which are intended be sold more than one year from the balance sheet date or operating cycle, if longer.

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Fair value of investments in trading equity securities and other forms of trading securities that provide ownership interests.

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Fair Value Measurements - Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) ¥ in Thousands, $ in Thousands	Dec. 31, 2014 USD ($)	Dec. 31, 2014 CNY (¥)	Dec. 31, 2013 CNY (¥)
Trading securities
Trading securities	$ 4,937	¥ 30,632	¥ 36,569
Available-for-sale securities:
Available-for-sale securities	$ 3,181	19,737	20,630
Fair Value, Measurements, Recurring [Member]
Trading securities
Trading securities		30,632	36,569
Available-for-sale securities:
Trading and Available-for-sale securities		50,369	57,199
Fair Value, Measurements, Recurring [Member] \| Quoted prices In Active Market for Identical Assets (Level 1) [Member]
Trading securities
Trading securities		30,632	36,569
Available-for-sale securities:
Trading and Available-for-sale securities		50,369	57,199
Fair Value, Measurements, Recurring [Member] \| Hong Kong [Member]
Trading securities
Trading securities		11,602	19,433
Fair Value, Measurements, Recurring [Member] \| Hong Kong [Member] \| Hotel operations [Member]
Trading securities
Trading securities		2,429	2,540
Available-for-sale securities:
Available-for-sale securities		19,737	20,630
Fair Value, Measurements, Recurring [Member] \| Hong Kong [Member] \| Gaming, entertainment and tourist-related [Member]
Trading securities
Trading securities		3,301	6,171
Fair Value, Measurements, Recurring [Member] \| Hong Kong [Member] \| Property development and investment [Member]
Trading securities
Trading securities		5,872	8,824
Fair Value, Measurements, Recurring [Member] \| Hong Kong [Member] \| Others [Member]
Trading securities
Trading securities			1,898
Fair Value, Measurements, Recurring [Member] \| Hong Kong [Member] \| Quoted prices In Active Market for Identical Assets (Level 1) [Member]
Trading securities
Trading securities		11,602	19,433
Fair Value, Measurements, Recurring [Member] \| Hong Kong [Member] \| Quoted prices In Active Market for Identical Assets (Level 1) [Member] \| Hotel operations [Member]
Trading securities
Trading securities		2,429	2,540
Available-for-sale securities:
Available-for-sale securities		19,737	20,630
Fair Value, Measurements, Recurring [Member] \| Hong Kong [Member] \| Quoted prices In Active Market for Identical Assets (Level 1) [Member] \| Gaming, entertainment and tourist-related [Member]
Trading securities
Trading securities		3,301	6,171
Fair Value, Measurements, Recurring [Member] \| Hong Kong [Member] \| Quoted prices In Active Market for Identical Assets (Level 1) [Member] \| Property development and investment [Member]
Trading securities
Trading securities		5,872	8,824
Fair Value, Measurements, Recurring [Member] \| Hong Kong [Member] \| Quoted prices In Active Market for Identical Assets (Level 1) [Member] \| Others [Member]
Trading securities
Trading securities			1,898
Fair Value, Measurements, Recurring [Member] \| Singapore [Member] \| Business management and consultancy, and provision of telecommunications and information technology services (through an associate) [Member]
Trading securities
Trading securities		19,030	17,136
Fair Value, Measurements, Recurring [Member] \| Singapore [Member] \| Quoted prices In Active Market for Identical Assets (Level 1) [Member] \| Business management and consultancy, and provision of telecommunications and information technology services (through an associate) [Member]
Trading securities
Trading securities		¥ 19,030	¥ 17,136