3. BALANCE SHEET DETAIL - Prepaid expenses and other current assets (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Mar. 31, 2016
Prepaid expenses and other current assets:
Prepaid tooling and masks	$ 1,021	$ 1,224
Prepaid income taxes	43
Escrow deposit	1,234
Other receivables	306	230
Other prepaid expenses and other current assets	556	744
Total prepaid expenses and other current assets	$ 3,160	$ 2,198