Leases - Additional Information (Detail) $ in Thousands	1 Months Ended	12 Months Ended
	Aug. 31, 2019	Jan. 31, 2020 USD ($) Contract	Jan. 31, 2019 USD ($)	Jan. 31, 2018 USD ($)
Lessee Lease Description [Line Items]
Operating leases, existence of options to extend		true
Future undiscounted cash payments		$ 11,182
Operating lease expense under ASC 842		$ 3,000
Operating lease expense under ASC 840			$ 4,600	$ 5,300
Weighted-average remaining lease term – operating leases		5 years 7 days
Weighted-average discount rate – operating leases		4.43%
Parma Lease [Member]
Lessee Lease Description [Line Items]
Future undiscounted cash payments		$ 2,200
Future undiscounted cash payments in first two years		1,800
Future undiscounted cash payments, paid in remainder of lease term		$ 400
Renewed Contract [Member]
Lessee Lease Description [Line Items]
Operating lease number of renewed contracts | Contract		2
An increase to operating lease right-of-use assets		$ 4,000
An increase to operating lease liabilities		$ 4,000
U.S. [Member] | Additional Office Space [Member]
Lessee Lease Description [Line Items]
Lease term		56 months
Commencement date		Jan. 01, 2021
Expiration date		Aug. 31, 2025
Future undiscounted cash payments		$ 1,700
U.S. [Member] | Renewed Contract [Member]
Lessee Lease Description [Line Items]
Lease term		63 months
Commencement date		Jun. 01, 2020
Expiration date		Aug. 31, 2025
Shanghai [Member] | Renewed Contract [Member]
Lessee Lease Description [Line Items]
Lease term		2 years
Commencement date		Dec. 01, 2019
Expiration date		Nov. 30, 2021
Italy [Member] | Building [Member]
Lessee Lease Description [Line Items]
Lease term	35 years
Construction completion period	2 years