Term Receivables and Trade Accounts Receivable (Tables)

3 Months Ended

Apr. 30, 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	April 30, 2013		January 31, 2013
Trade accounts receivable	$	125,969	$	178,351
Term receivables, short-term	$	241,420	$	233,894
Term receivables, long-term	$	228,425	$	250,497

Credit risk assessment for long-term receivables

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

As of	April 30, 2013		January 31, 2013
S&P credit rating:
AAA+ through BBB-	$	131,007	$	133,773
BB+ and lower	35,275		45,298
	166,282		179,071
Internal credit assessment	62,143		71,426
Total long-term term receivables	$	228,425	$	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
Three months ended April 30, 2013	$	5,331	$	(500	)	$	(79	)	$	4,752
Three months ended April 30, 2012	$	4,432	$	153		$	(48	)	$	4,537

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