Summary of Significant Accounting Policies (Details 2)	12 Months Ended
	Dec. 31, 2013
Class B
Deferred Sales Commissions
Amortization period of the cost incurred at the time of sale	5 years
Required holding period of shares	6 years
Class C
Deferred Sales Commissions
Amortization period of the cost incurred at the time of sale	12 months
Required holding period of shares	12 months
Asset allocation product
Deferred Sales Commissions
Required holding period of shares	3 years
Asset allocation product | Maximum
Deferred Sales Commissions
Amortization period of the cost incurred at the time of sale	3 years