Note 4 - Fair Value Measurements (Tables)

6 Months Ended

Jul. 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 July 31, 2021
Money market mutual funds	$	98,630
Certificates of deposit	$	12,453
Note payable for FTZ Corp. acquisition			$	2,431
Liability related to the interest rate swap			$	(207	)
Contingent liability associated with acquisitions						$	(6,217	)
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	)

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

	Liability
		Fair Value
	Balance Sheet Location	July 31, 2021			January 31, 2021
Derivative instrument:
Long-term interest rate swap	Other liabilities	$	-		$	(325	)
Short-term interest rate swap	Current portion of long-term debt		(207	)		-
Total		$	(207	)	$	(325	)