Note 8 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2016	Jul. 31, 2015
Income Tax Expense (Benefit)	$ (532)	$ 1,002	$ (1,601)	$ 1,206
Effective Income Tax Rate Reconciliation, Percent	(782.00%)	38.00%	43.00%	36.00%
Unrecognized Tax Benefits	$ 1,500		$ 1,500
Unrecognized Tax Benefits, Period Increase (Decrease)			(1,000)
Increase (Decrease) in Deferred Tax Asset			(1,000)
Unrecognized Tax Benefits Recognized in Next Twelve Months	100		100
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	$ 200		$ 200