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Expense Example (Small Company Value Trust, USD $)
12 Months Ended
May 01, 2011
Series I, Small Company Value Trust
 
Expense Example:  
Year 1 $ 136
Year 3 425
Year 5 734
Year 10 1,613
Series II, Small Company Value Trust
 
Expense Example:  
Year 1 157
Year 3 486
Year 5 839
Year 10 1,834
Series NAV, Small Company Value Trust
 
Expense Example:  
Year 1 131
Year 3 409
Year 5 708
Year 10 $ 1,556