Income taxes Components of deferred income tax (Tables)

12 Months Ended

Jan. 31, 2018

Components of deferred income tax [Line Items]

Components of deferred tax assets and liabilities [Table Text Block]

Components of deferred income tax assets (in thousands)	2017		2016
U.S. Federal NOL carryforward	$1,795		$7,765
Deferred compensation	341		346
Research tax credit	2,703		2,703
Foreign NOL carryforward	332		185
Foreign tax credit	9,749		4,695
Stock compensation	506		804
Other accruals not yet deducted	270		514
State NOL carryforward	2,157		1,574
Accrued commissions and incentives	423		765
Inventory valuation allowance	96		110
Other	81		5
Deferred tax assets, gross	18,453		19,466
Valuation allowance	(17,198	)	(16,551	)
Total deferred tax assets, net of valuation allowances	$1,255		$2,915
Components of the deferred income tax liability
Depreciation	($1,941)		($2,778)
Foreign subsidiaries unremitted earnings	(101	)	(1,750	)
Prepaid	(64	)	(69	)
Total deferred tax liabilities	($2,106)		($4,597)
Deferred tax liability, net	($851)		($1,682)
Balance sheet classification
Long-term assets	$391		$147
Long-term liability	(1,242	)	(1,829	)
Total deferred tax liabilities, net of valuation allowances	($851)		($1,682)