Note 4 - Fair Value Measurements (Tables)

6 Months Ended

Jul. 31, 2019

Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]

	Fair value measurement at reporting date using
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
	(in thousands)
Money market mutual funds as of July 31, 2019	$	106,774
Money market mutual funds as of January 31, 2019	$	107,855
Short-term investments as of July 31, 2019	$	1,200
Short-term investments as of January 31, 2019	$	1,200
Liability related to the interest rate swap as of July 31, 2019			$	(115	)
Asset related to the interest rate swap as of January 31, 2019			$	136

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

	Liability / Asset
		Fair Value
	Balance Sheet Location	July 31 , 2019			January 31, 2019
Derivative instrument:
Interest rate swap	Other liabilities / Other assets, net	$	(115	)	$	136
Total		$	(115	)	$	136

- Definition

Tabular disclosure of financial instruments measured at fair value, including those classified in shareholders' equity measured on a recurring or nonrecurring basis. Disclosures include, but are not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. Nonrecurring fair value measurements are those that are required or permitted in the statement of financial position in particular circumstances.

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