XML 43 R31.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Interest expense, net (Tables) | 6 Months Ended
--- | ---
Jul. 31, 2017
Interest Income (Expense), Net [Abstract] |
Interest income and interest expense [Table Text Block] |
| Three Months Ended July 31, | Six Months Ended July 31,
| 2017 |  | 2016 |  | 2017 |  | 2016 |
Interest expense |  | $193 |  |  | $139 |  |  | $358 |  |  | $392 |
Interest income | (36 | ) | (42 | ) | (44 | ) | (69 | )
Interest expense, net |  | $157 |  |  | $97 |  |  | $314 |  |  | $323 |

X
- References No definition available. + Details
Name: | us-gaap_InterestIncomeExpenseNetAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the components of non-operating income or non-operating expense that may include amounts earned from dividends, interest on securities, gains (losses) on securities sold, equity earnings of unconsolidated affiliates, net gain (loss) on sales of business, interest expense and other miscellaneous income or expense items. + References No definition available. + Details
Name: | us-gaap_ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration