XML 24 R37.htm IDEA: XBRL DOCUMENT

Accounts Receivable and Allowance for Doubtful Receivables (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Aug. 31, 2012	Aug. 31, 2011	Aug. 31, 2012	Aug. 31, 2011
Allowance for doubtful receivables
Balance at beginning of period	$ 4,479	$ 4,882	$ 4,403	$ 4,814
Bad debt expense		21	287	542
Recoveries	13	6	19	172
Accounts written off	(82)	(76)	(299)	(695)
Balance at end of period	$ 4,410	$ 4,833	$ 4,410	$ 4,833

Amount of the current period expense charged against operations, the offset which is generally to the allowance for doubtful accounts for the purpose of reducing receivables, including notes receivable, to an amount that approximates their net realizable value (the amount expected to be collected).

+ References+ Details