Term Receivables and Trade Accounts Receivable (Tables)

6 Months Ended

Jul. 31, 2015

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, 2015		January 31, 2015
Trade accounts receivable	$	97,839	$	208,996
Term receivables, short-term	$	345,958	$	337,626
Term receivables, long-term	$	266,092	$	301,862

Credit risk assessment for long-term receivables

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

As of	July 31, 2015		January 31, 2015
S&P credit rating:
AAA+ through BBB-	$	165,511	$	192,430
BB+ and lower	37,782		31,939
	203,293		224,369
Internal credit assessment	62,799		77,493
Total long-term term receivables	$	266,092	$	301,862

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, 2015	$	4,217	$	(597	)	$	(9	)	$	3,611
Six months ended July 31, 2014	$	5,469	$	(1,951	)	$	(224	)	$	3,294

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