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ALLOWANCE FOR DOUBTFUL ACCOUNTS: (Tables)
 12 Months Ended
Mar. 31, 2012
ALLOWANCE FOR DOUBTFUL ACCOUNTS:  
Summary of the activity of the allowance for doubtful accounts, returns and credits

 

 

 

 

Balance at
beginning of
period

 

Additions
charged to
costs and
expenses

 

Other
changes

 

Bad debts
written off,
net of
amounts
recovered

 

Balance at
end of period

 

2010:

 

 

 

 

 

 

 

 

 

 

 

Allowance for doubtful accounts, returns and credits

 

$

10,038

 

$

3,820

 

$

(872

)

$

(6,645

)

$

6,341

 

2011:

 

 

 

 

 

 

 

 

 

 

 

Allowance for doubtful accounts, returns and credits

 

$

6,341

 

$

940

 

$

198

 

$

(1,857

)

$

5,622

 

2012:

 

 

 

 

 

 

 

 

 

 

 

Allowance for doubtful accounts, returns and credits

 

$

5,622

 

$

1,731

 

$

(164

)

$

(2,313

)

$

4,876