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Note 17 - Income Taxes - Income Tax Loss Carryforwards Expiration Dates (Details) $ in Thousands	Jan. 31, 2018 USD ($)
Operating loss carryforwards	$ 71,343
Expire Next 12 Months [Member]
Operating loss carryforwards	1,615
Expire Year Two [Member]
Operating loss carryforwards	291
Expire Year Three [Member]
Operating loss carryforwards	12
Expire Year Four [Member]
Operating loss carryforwards	24
Expire Year Five [Member]
Operating loss carryforwards	1,697
Expire Thereafter [Member]
Operating loss carryforwards	67,704
United States [Member]
Operating loss carryforwards	7,760
United States [Member] | Expire Next 12 Months [Member]
Operating loss carryforwards	883
United States [Member] | Expire Year Two [Member]
Operating loss carryforwards
United States [Member] | Expire Year Three [Member]
Operating loss carryforwards
United States [Member] | Expire Year Four [Member]
Operating loss carryforwards	1
United States [Member] | Expire Year Five [Member]
Operating loss carryforwards	190
United States [Member] | Expire Thereafter [Member]
Operating loss carryforwards	6,686
EMEA [Member]
Operating loss carryforwards	56,164
EMEA [Member] | Expire Next 12 Months [Member]
Operating loss carryforwards
EMEA [Member] | Expire Year Two [Member]
Operating loss carryforwards
EMEA [Member] | Expire Year Three [Member]
Operating loss carryforwards
EMEA [Member] | Expire Year Four [Member]
Operating loss carryforwards
EMEA [Member] | Expire Year Five [Member]
Operating loss carryforwards	1,507
EMEA [Member] | Expire Thereafter [Member]
Operating loss carryforwards	54,657
Asia Pacific [Member]
Operating loss carryforwards	7,419
Asia Pacific [Member] | Expire Next 12 Months [Member]
Operating loss carryforwards	732
Asia Pacific [Member] | Expire Year Two [Member]
Operating loss carryforwards	291
Asia Pacific [Member] | Expire Year Three [Member]
Operating loss carryforwards	12
Asia Pacific [Member] | Expire Year Four [Member]
Operating loss carryforwards	23
Asia Pacific [Member] | Expire Year Five [Member]
Operating loss carryforwards
Asia Pacific [Member] | Expire Thereafter [Member]
Operating loss carryforwards	$ 6,361

X

- Definition

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319

+ Details

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