ALLOWANCE FOR DOUBTFUL ACCOUNTS:

3 Months Ended

Jun. 30, 2011

ALLOWANCE FOR DOUBTFUL ACCOUNTS:

ALLOWANCE FOR DOUBTFUL ACCOUNTS:

7.             ALLOWANCE FOR DOUBTFUL ACCOUNTS:

Trade accounts receivable are presented net of allowances for doubtful accounts, returns and credits of $5.2 million at June 30, 2011 and $5.6 million at March 31, 2011.