Term Receivables and Trade Accounts Receivable (Tables)

6 Months Ended

Jul. 31, 2012

Notes To Financial Statements [Abstract]

Term Receivable and Trade Accounts Receivable Balances

Term receivable and trade accounts receivable balances were as follows:

As of	July 31, 2012		January 31, 2012
Trade accounts receivable	$	99,097	$	133,494
Term receivables, short-term	$	242,359	$	221,430
Term receivables, long-term	$	217,338	$	220,355

Credit Risk Assessment for Long-term Receivables

The credit risk assessment for our long-term receivables was as follows:

As of	July 31, 2012		January 31, 2012
S&P credit rating:
AAA+ through BBB-	$	130,519	$	130,545
BB+ and lower	28,164		15,161
	158,683		145,706
Internal credit assessment	58,655		74,649
Total long-term term receivables	$	217,338	$	220,355

Change in Allowance for Doubtful Accounts

The following shows the change in allowance for doubtful accounts:

Allowance for doubtful accounts	Beginning balance		Charged  to expense		Deductions(1)			Ending balance
Six months ended July 31, 2012	$	4,432	$	32	$	(145	)	$	4,319

(1)Specific account write-offs and foreign exchange.