Term Receivables and Trade Accounts Receivable (Tables)

6 Months Ended

Jul. 31, 2013

Term Receivables and Trade Accounts Receivable [Abstract]

Term receivable and trade accounts receivable balances

Term receivable and trade accounts receivable balances were as follows:

As of	July 31, 2013		January 31, 2013
Trade accounts receivable	$	94,628	$	178,351
Term receivables, short-term	$	270,883	$	233,894
Term receivables, long-term	$	216,066	$	250,497

Credit risk assessment for long-term receivables

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

As of	July 31, 2013		January 31, 2013
S&P credit rating:
AAA+ through BBB-	$	112,493	$	133,773
BB+ and lower	38,647		45,298
	151,140		179,071
Internal credit assessment	64,926		71,426
Total long-term term receivables	$	216,066	$	250,497

Change in allowance for doubtful accounts

The following shows the change in allowance for doubtful accounts:

Allowance for doubtful accounts	Beginning balance		Expense adjustment			Other deductions(1)			Ending balance
Six months ended July 31, 2013	$	5,331	$	(331	)	$	(186	)	$	4,814
Six months ended July 31, 2012	$	4,432	$	32		$	(145	)	$	4,319

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