XML 47 R32.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Significant accounting policies Net loss per common share (Tables) | 12 Months Ended
--- | ---
Jan. 31, 2018
Basic weighted average number of common shares outstanding [Line Items] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
Basic weighted average number of common shares outstanding (in thousands) | 2017 |  | 2016 |
Basic weighted average number of common shares outstanding | 7,680 |  | 7,488 |
Dilutive effect of stock options, deferred stock and restricted stock units | — |  | — |
Weighted average number of common shares outstanding assuming full dilution | 7,680 |  | 7,488 |
Stock options not included in the computation of diluted EPS of common stock because the option exercise prices exceeded the average market prices | 139 |  | 306 |
Canceled options during the year | (131 | ) | (159 | )
Stock options with an exercise price below the average stock price | 219 |  | 218 |

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
Name: | us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration