ALLOWANCE FOR DOUBTFUL ACCOUNTS:

6 Months Ended

Sep. 30, 2015

ALLOWANCE FOR DOUBTFUL ACCOUNTS:

ALLOWANCE FOR DOUBTFUL ACCOUNTS:

9.ALLOWANCE FOR DOUBTFUL ACCOUNTS:

Trade accounts receivable are presented net of allowances for doubtful accounts, returns and credits of $4.6 million at September 30, 2015 and $4.4 million at March 31, 2015.