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Expense Example (Small Company Growth Trust, USD $)
12 Months Ended
May 01, 2011
Series I, Small Company Growth Trust
 
Expense Example:  
Year 1 $ 117
Year 3 365
Year 5 633
Year 10 1,398
Series II, Small Company Growth Trust
 
Expense Example:  
Year 1 137
Year 3 428
Year 5 739
Year 10 1,624
Series NAV, Small Company Growth Trust
 
Expense Example:  
Year 1 112
Year 3 350
Year 5 606
Year 10 $ 1,340