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LEGAL CONTINGENCIES (Details) - USD ($)
$ in Millions
1 Months Ended 12 Months Ended
Feb. 01, 2016
Jun. 30, 2018
Jan. 31, 2020
Jan. 31, 2019
PPS Engineers, Inc. claims lawsuit        
Loss Contingencies        
Amount paid on settlement     $ 0.9  
Gain on settlement       $ 1.4
Former subcontractor | GPS        
Loss Contingencies        
Amount of arbitration panel awarded   $ 5.2    
Penalty of interest and arbitration fee   $ 0.7    
Pending Litigation | PPS Engineers, Inc. claims lawsuit        
Loss Contingencies        
Amount of damages sought by plaintiff $ 2.3