Subsequent Events - Additional Information (Detail)	0 Months Ended
	Jan. 17, 2014
Subsequent Event [Line Items]
Purchase of additional equity shares	15.00%
Subsequent event | Galileo Global Equity Advisor Inc
Subsequent Event [Line Items]
Purchase of additional equity shares	15.00%
Subsequent event | Forecast | Galileo Global Equity Advisor Inc
Subsequent Event [Line Items]
Percentage of shares issued and outstanding of Galileo	65.00%