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Note 8 - Income Taxes - Deferred Tax Assets (Details) - USD ($) $ in Thousands	Jan. 31, 2019	Jan. 31, 2018
U.S. Federal NOL carryforward	$ 7,480	$ 1,795
Deferred compensation	382	341
Research tax credit	2,703	2,703
Foreign NOL carryforward	390	332
Foreign tax credit	2,305	9,749
Stock compensation	459	506
Other accruals not yet deducted	349	270
State NOL carryforward	2,552	2,157
Accrued commissions and incentives	643	423
Inventory valuation allowance	112	96
Other	159	81
Deferred tax assets, gross	17,534	18,453
Valuation allowance	(16,199)	(17,198)
Total deferred tax assets, net of valuation allowances	1,335	1,255
Depreciation	(1,734)	(1,941)
Foreign subsidiaries unremitted earnings	(498)	(101)
Prepaid	(80)	(64)
Total deferred tax liabilities	(2,312)	(2,106)
Deferred tax liability, net	(977)	(851)
Long-term assets	458	391
Long-term liability	$ (1,435)	$ (1,242)

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- Definition

Amount of deferred tax liability attributable to taxable temporary differences from undistributed earnings of subsidiaries and other recognized entities not within the country of domicile of the entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32621-109319

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32632-109319

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 25
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=115928272&loc=d3e28680-109314

+ Details

Name:	us-gaap_DeferredTaxLiabilitiesUndistributedForeignEarnings
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant