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CASH AND CASH EQUIVALENTS
6 Months Ended
Jun. 30, 2011
CASH AND CASH EQUIVALENTS [Abstract]  
CASH AND CASH EQUIVALENTS
3.      CASH AND CASH EQUIVALENTS
 
The Trust considers all highly liquid investments with maturities, when purchased, of three months or less as cash and cash equivalents. At June 30, 2011, cash and cash equivalents did not exceed federal insured limits.