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Income Taxes (Components of Loss Before Income Taxes) (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2015
Components Of Income Loss Before Income Taxes [Line Items]      
(Loss) income from continuing operations $ 1,585 $ (4,776) $ (2,253)
(Loss) from discontinued operations - PRC (348)
Net Loss 1,585 (4,776) (2,601)
HONG KONG [Member]      
Components Of Income Loss Before Income Taxes [Line Items]      
(Loss) income from continuing operations (2) (2) (2)
Macao [Member]      
Components Of Income Loss Before Income Taxes [Line Items]      
(Loss) income from continuing operations 189 840 292
CHINA [Member]      
Components Of Income Loss Before Income Taxes [Line Items]      
(Loss) income from continuing operations 1,398 (5,614) (2,543)
(Loss) from discontinued operations - PRC $ (348)