REVENUES FROM CONTRACTS WITH CUSTOMERS - Disaggregation of Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020
Disaggregation of Revenues
Totals	$ 133,008	$ 87,492	$ 259,349	$ 147,640
United States
Disaggregation of Revenues
Totals	123,380	83,510	238,871	132,375
Republic of Ireland
Disaggregation of Revenues
Totals	7,998	1,442	12,691	2,429
United Kingdom
Disaggregation of Revenues
Totals	$ 1,630	$ 2,540	$ 7,787	$ 12,836