Income taxes Components of deferred income tax (Tables)

12 Months Ended

Jan. 31, 2017

Components of deferred income tax [Line Items]

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

Components of deferred income tax assets	2016		2015
U.S. Federal NOL carryforward	$9,348		$3,044
Deferred compensation	346		2,382
Research tax credit	2,703		2,057
Foreign NOL carryforward	186		231
Foreign tax credit	4,695		2,861
Stock compensation	804		1,061
Other accruals not yet deducted	514		438
State NOL carryforward	1,877		1,419
Accrued commissions and incentives	765		723
Inventory valuation allowance	110		73
Other	4		116
Deferred tax assets, gross	21,352		14,405
Valuation allowance	(18,437	)	(13,333	)
Total deferred tax assets, net of valuation allowances	$2,915		$1,072
Components of the deferred income tax liability
Depreciation	($2,778)		($633)
Foreign subsidiaries unremitted earnings	(1,750	)	(412	)
Prepaid	(69	)	(88	)
Total deferred tax liabilities	($4,597)		($1,133)
Deferred tax liability, net	($1,682)		($61)
Balance sheet classification
Long-term assets	$147		$99
Long-term liability	(1,829	)	(160	)
Total deferred tax liabilities, net of valuation allowances	($1,682)		($61)