ALLOWANCE FOR DOUBTFUL ACCOUNTS:

12 Months Ended

Mar. 31, 2011

ALLOWANCE FOR DOUBTFUL ACCOUNTS:

ALLOWANCE FOR DOUBTFUL ACCOUNTS:

10.           ALLOWANCE FOR DOUBTFUL ACCOUNTS:

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
2009:
Allowance for doubtful accounts, returns and credits	$	10,011	$	4,068	$	(1,253	)	$	(2,788	)	$	10,038
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

Included in other changes are allowance accounts acquired in connection with business combinations, disposals, and the effects of exchange rates.