3. BALANCE SHEET DETAIL - Prepaid expenses and other current assets (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Mar. 31, 2017
Prepaid expenses and other current assets:
Prepaid tooling and masks	$ 861	$ 836
Prepaid income taxes		43
Escrow deposit	755	1,234
Other receivables	234	216
Other prepaid expenses and other current assets	801	448
Total prepaid expenses and other current assets	$ 2,651	$ 2,777