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SEGMENT INFORMATION (Details) - Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas - USD ($)
$ in Thousands
Sep. 30, 2020
Mar. 31, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]    
Intangible assets, net $ 344 $ 252
Property, plant and equipment, net 10,906 9,780
Investments in unlisted securities 261 11
Claims and advances 616 610
Operating lease asset 532 574
Total long-term assets 12,659 11,227
Geographic Distribution, Domestic [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Intangible assets, net 344 252
Property, plant and equipment, net 6,269 5,216
Investments in unlisted securities 250 0
Claims and advances 199 200
Operating lease asset 532 574
Total long-term assets 7,594 6,242
Geographic Distribution, Foreign [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Intangible assets, net 0 0
Property, plant and equipment, net 4,637 4,564
Investments in unlisted securities 11 11
Claims and advances 417 410
Operating lease asset 0 0
Total long-term assets $ 5,065 $ 4,985