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3. BALANCE SHEET DETAIL - Prepaid expenses and other current assets (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Mar. 31, 2016
Prepaid expenses and other current assets:    
Prepaid tooling and masks $ 836 $ 1,224
Prepaid income taxes 43  
Escrow deposit 1,234  
Other receivables 216 230
Other prepaid expenses and other current assets 448 744
Total prepaid expenses and other current assets $ 2,777 $ 2,198