ALLOWANCE FOR DOUBTFUL ACCOUNTS: (Tables)

12 Months Ended

Mar. 31, 2016

ALLOWANCE FOR DOUBTFUL ACCOUNTS:

Summary of activity of allowance for doubtful accounts, returns and credits

A summary of the activity of the allowance for doubtful accounts, returns and credits is as follows (dollars in thousands):

	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
2014:
Allowance for doubtful accounts, returns and credits	$	4,105	$	1,058	$	117		$	(405	)	$	4,875
2015:
Allowance for doubtful accounts, returns and credits	$	4,875	$	731	$	(288	)	$	(895	)	$	4,423
2016:
Allowance for doubtful accounts, returns and credits	$	4,423	$	3,673	$	56		$	(890	)	$	7,262