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Summary of Significant Accounting Policies (Narrative) (Details) $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2016 USD ($) | Mar. 31, 2015 USD ($) | Mar. 31, 2014 USD ($)
Goodwill impairment |  |  | $ 392
Impairment of long-lived assets |  |  | 490
Shipping and handling cost | 458 | 514 | 650
Aggregate net foreign currency transaction gain | $ (559) | $ (205) | $ 40
Hong Kong, Dollars |  |  |
Exchange rate per dollar | 7.7904 | 7.7524 | 7.7558
China, Yuan Renminbi |  |  |
Exchange rate per dollar | 6.5698 | 6.2456 | 6.196

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