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Property and Equipment - Summary (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Mar. 31, 2017
Property, Plant and Equipment [Line Items]    
Cost $ 3,895 $ 3,928
Accumulated Depreciation 3,052 2,744
Net Book Value 843 1,184
Automobiles    
Property, Plant and Equipment [Line Items]    
Cost 646 712
Accumulated Depreciation 468 459
Net Book Value 178 253
Equipment    
Property, Plant and Equipment [Line Items]    
Cost 1,496 1,476
Accumulated Depreciation 1,071 851
Net Book Value 425 625
Furniture and fixtures    
Property, Plant and Equipment [Line Items]    
Cost 546 546
Accumulated Depreciation 457 427
Net Book Value 89 119
Leasehold improvements    
Property, Plant and Equipment [Line Items]    
Cost 1,207 1,194
Accumulated Depreciation 1,056 1,007
Net Book Value $ 151 $ 187