Schedule of assets and liabilities measured at fair value on recurring basis

Our assets and liabilities measured at fair value on a recurring basis consisted of the following as of April 30, 2020 and January 31, 2020:


	April 30, 2020
	Fair Value Hierarchy Category
(in thousands)	Level 1		Level 2		Level 3
Assets:
Money market funds	$	144,745	$	—	$	—
Foreign currency forward contracts	—		1,270		—
Contingent consideration receivable	—		—		668
Total assets	$	144,745	$	1,270	$	668
Liabilities:
Foreign currency forward contracts	$	—	$	724	$	—
Interest rate swap agreement	—		20,445		—
Contingent consideration - business combinations	—		—		35,002
Option to acquire noncontrolling interests of consolidated subsidiaries	—		—		2,650
Total liabilities	$	—	$	21,169	$	37,652


	January 31, 2020
	Fair Value Hierarchy Category
(in thousands)	Level 1		Level 2		Level 3
Assets:
Money market funds	$	89	$	—	$	—
Foreign currency forward contracts	—		812		—
Contingent consideration receivable	—		—		738
Total assets	$	89	$	812	$	738
Liabilities:
Foreign currency forward contracts	$	—	$	132	$	—
Interest rate swap agreements	—		13,501		—
Contingent consideration - business combinations	—		—		42,875
Option to acquire noncontrolling interests of consolidated subsidiaries	—		—		2,900
Total liabilities	$	—	$	13,633	$	45,775

Liability for contingent consideration measured using significant unobservable inputs (Level 3)

Schedule of changes in the estimated fair value using significant unobservable inputs (Level 3)

The following table presents the change in the estimated fair value of this liability, which is measured using Level 3 inputs, for the three months ended April 30, 2020 and 2019:



	Three Months Ended April 30,
(in thousands)	2020		2019
Fair value measurement at beginning of period	$	2,900	$	3,000
Change in fair value, recorded in operating expenses	(250)		(150)
Fair value measurement at end of period	$	2,650	$	2,850