Income taxes Components of deferred income tax (Tables)

12 Months Ended

Jan. 31, 2014

Components of deferred income tax [Line Items]

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

Components of deferred income tax assets	2013		2012
U.S. Federal NOL carryforward	$2,298		$3,680
Non-qualified deferred compensation	2,358		2,092
Research tax credit	1,965		1,964
Foreign NOL carryforward	1,004		612
Foreign tax credit	1,294		1,297
Stock compensation	1,162		1,417
Other accruals not yet deducted	581		1,086
State NOL carryforward	1,173		1,066
Accrued commissions and incentives	814		837
Accrued pension	182		428
Inventory valuation allowance	413		306
Other	217		94
Inventory uniform capitalization	102		132
Deferred tax assets, gross	13,563		15,011
Valuation allowance	(11,591	)	(12,960	)
Total deferred tax assets, net of valuation allowances	$1,972		$2,051
Components of the deferred income tax liability
Depreciation	$963		$1,040
Prepaid	231		340
Total deferred tax liabilities	$1,194		$1,380
Deferred tax asset, net	$778		$671
Balance sheet classification
Long-term assets	$1,667		$1,358
Current liabilities	889		687
Total deferred tax assets, net of valuation allowances	$778		$671