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Note 3 - Fair Value Measurements (Tables)

12 Months Ended

Jan. 31, 2021

Notes Tables

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)
As of January 31, 2021
Money market mutual funds		$	80,611
Certificates of deposit		$	9,262
Liability related to the interest rate swap						$	(325	)
Contingent liability associated with acquisitions										$	(4,751	)

As of January 31, 2020
Money market mutual funds		$	107,319
Certificates of deposit		$	14,917
Liability related to the interest rate swap						$	(232	)

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

	Liability
			Fair Value
	Balance Sheet Location		January 31, 2021				January 31, 2020
Derivative instrument:
Interest rate swap	Other liabilities		$	(325	)		$	(232	)
Total			$	(325	)			(232	)

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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