INCOME TAXES (Details) $ in Thousands	12 Months Ended
	Jan. 31, 2016 USD ($) Transaction Entity	Jan. 31, 2015 USD ($)	Jan. 31, 2014 USD ($)	Jan. 31, 2013 USD ($)
Current [Abstract]
Federal	$ (1,656)	$ 174	$ 303
State	26	109	33
Foreign	2,591	3,010	2,703
Current subtotal	961	3,293	3,039
Deferred [Abstract]
Federal	(956)	(786)	20
State	303	229	306
Foreign	63	(348)	297
Deferred subtotal	(590)	(905)	623
Equity adjustment	1,254	251	104
Total	$ 1,624	2,639	3,766
Federal statutory income tax rate	34.00%
Income Tax Reconciliation [Abstract]
Computed expected tax expense	$ 3,582	5,299	3,452
State income taxes, net of federal income tax expense	252	253	330
Incremental tax benefit from foreign operations	(2,548)	(5,220)	(2,676)
Non-deductible equity compensation	254	258	1,176
Foreign withholding taxes	968	1,256	1,171
Net change in valuation allowance	2,564	1,657	(108)
Net change in contingency reserve	(379)	(594)	45
Non-deductible expenses	621	742	1,084
Benefit of tax credits	(3,186)	(1,345)	(1,624)
Subpart F Income	254	283	198
Rate change impact	193	54	(88)
Benefit from liquidation utilized	(1,321)	0	0
Other	370	(4)	806
Total	1,624	2,639	3,766
Consolidated U.S. income (loss) before income taxes	(7,800)	(2,400)	(1,200)
Income before income taxes for foreign operations	18,400	18,000	11,400
Permanently reinvested earnings of foreign subsidiaries	81,900
Deferred tax assets [Abstract]
Allowance for doubtful accounts and sales adjustments	486	452
Accrued vacation	1,900	2,015
Tax credits	11,025	8,584
Deferred revenue	3,520	3,666
Net operating loss carry forwards	7,965	9,646
Accrued expenses - other	1,557	2,478
Other comprehensive income	1,483	0
Section 263(a) interest capitalization	333	353
Equity compensation	4,631	3,673
Other	2,111	1,824
Total deferred tax assets	35,011	32,691
Less valuation allowance	(13,480)	(10,684)
Less netting of unrecognized tax benefits against deferred tax assets	(1,042)	(1,406)
Deferred tax assets, net of valuation allowance	20,489	20,601
Deferred tax liabilities [Abstract]
Basis difference in foreign subsidiaries	0	(2,004)
Depreciation and amortization	(249)	(379)
Other comprehensive income	0	(20)
Other	(118)	(346)
Total deferred tax liabilities	(367)	(2,749)
Total net deferred tax assets	20,122	17,852
Current portion of deferred tax assets	8,261	9,434
Non-current portion of deferred tax assets	12,342	11,229
Current portion of deferred tax liabilities (in current deferred tax assets)	(58)	(2,125)
Non-current portion of deferred tax liabilities (in non-current deferred tax assets)	$ (423)	(686)
Number of non-recurring foreign transactions | Transaction	2
Number of entities merged | Entity	2
Increase in deferred tax liabilities		1,100	1,100	$ 1,100
Adjustment to retained earnings		1,100	1,100	$ 1,100
Tax benefit realized from exercise of stock options	$ 2,600	2,100
Excess tax benefits realized	600
Future increase in equity related to excess tax benefits	2,600
Net operating loss carryforwards	29,300
Tax credit carryforwards	14,200
Decrease in reserve for uncertain tax position	400
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefits at beginning of the year	1,924	2,626
Increases as a result of tax positions taken in a prior period	(17)	85
Increases as a result of tax positions taken in the current period	15	27
Reduction as a result of a lapse of the statute of limitations	(288)	(649)
Decreases as a result of tax settlements	(89)	(165)
Unrecognized tax benefit at end of year	1,545	$ 1,924	$ 2,626
Income Tax Contingency [Line Items]
Income tax penalties and interest expense	19
Unrecognized tax benefits, income tax penalties and interest accrued	$ 200
U.S. Federal [Member]
Income Tax Contingency [Line Items]
Years in which the company is currently under audit	FY13 and beyond
California [Member]
Income Tax Contingency [Line Items]
Years in which the company is currently under audit	FY12 and beyond
Michigan [Member]
Income Tax Contingency [Line Items]
Years in which the company is currently under audit	FY12 and beyond
New Jersey [Member]
Income Tax Contingency [Line Items]
Years in which the company is currently under audit	FY12 and beyond
Australia [Member]
Income Tax Contingency [Line Items]
Years in which the company is currently under audit	FY12 and beyond
France [Member]
Income Tax Contingency [Line Items]
Years in which the company is currently under audit	FY14 and beyond
India [Member]
Income Tax Contingency [Line Items]
Years in which the company is currently under audit	FY98, FY99, FY09, FY10, FY12 and beyond
Ireland [Member]
Income Tax Contingency [Line Items]
Years in which the company is currently under audit	FY12 and beyond
United Kingdom [Member]
Income Tax Contingency [Line Items]
Years in which the company is currently under audit	FY15 and beyond