SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Coranavirus ("COVID-19") Impact - (Details) - LGC	6 Months Ended
Jul. 31, 2020	Apr. 30, 2020
Equity Method Investment, Ownership Percentage		51.20%
Revenue from Contract with Customer, Advisory And Consulting Services
Concentration Risk, Percentage	92.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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