COMMITMENTS - Leases (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2020	Oct. 31, 2019
Operating leases, options to extend			true
Operating leases, options to terminate			true
Operating lease expense	$ 500	$ 100	$ 1,318	$ 637
Operating lease payments	$ 300	200	$ 1,200	600
Weighted average lease term	32 months		32 months
Weighted average discount rate	3.30%		3.30%
Surety Bond
Outstanding letter of credit replaced with Surety bond	$ 7,600		$ 7,600
London Interbank Offered Rate (LIBOR)
Interest rate margin on referred rate			2.00%
TRC
April 30, 2021	300		$ 300
GPS
Future minimum lease payment	500		2,300
GPS | Financial guarantee
Guarantor obligation maximum exposure	3,600		3,600
Costs of Revenues
Rent expense	2,300	900	4,200	3,200
Selling, General and Administrative Expenses
Rent expense	$ 200	$ 100	$ 700	$ 500