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Property and Equipment - Summary (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Mar. 31, 2019
Property, Plant and Equipment [Line Items]    
Cost $ 3,964 $ 3,872
Accumulated Depreciation 3,482 3,216
Net Book Value 482 656
Automobiles    
Property, Plant and Equipment [Line Items]    
Cost 451 488
Accumulated Depreciation 396 415
Net Book Value 55 73
Software    
Property, Plant and Equipment [Line Items]    
Cost 160 127
Accumulated Depreciation 23 3
Net Book Value 137 124
Equipment    
Property, Plant and Equipment [Line Items]    
Cost 1,571 1,535
Accumulated Depreciation 1,439 1,263
Net Book Value 132 272
Furniture and fixtures    
Property, Plant and Equipment [Line Items]    
Cost 575 535
Accumulated Depreciation 519 465
Net Book Value 56 70
Leasehold improvements    
Property, Plant and Equipment [Line Items]    
Cost 1,207 1,187
Accumulated Depreciation 1,105 1,070
Net Book Value $ 102 $ 117