CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities:
Net income	$ 5,309	$ 478
Adjustments to reconcile net income to net cash provided by operating activities:
Write-off of engineering project development qualification units		67
Shipped qualification assets		2
Depreciation and amortization	799	1,078
Non-cash reserve accretion	138	149
Stock based compensation	451	599
Provision for losses on accounts receivable	36	9
Deferred taxes-net	981	311
Changes in assets and liabilities:
(Increase) decrease in accounts receivable and other receivables	3,999	9,397
(Increase) decrease in inventories	(6,672)	(3,677)
(Increase) decrease in income taxes receivable	354
(Increase) decrease in other assets	(604)	363
Increase (decrease) in accounts payable	143	(365)
Increase (decrease) in accrued compensation	(1,001)	(939)
Increase (decrease) in accrued income taxes	(2,124)	(55)
Increase (decrease) in other liabilities	(670)	(1,006)
Net cash provided by operating activities	1,139	6,411
Cash flows from investing activities:
Capital expenditures	(779)	(174)
Capitalized qualification units and pre-qualification assets		(44)
Net cash used in investing activities	(779)	(218)
Cash flows from financing activities:
Exercise of stock options	643	662
Net cash provided by financing activities	643	662
Increase in cash	1,003	6,855
Cash at beginning of period	22,806	6,021
Cash at end of period	23,809	12,876
Supplemental information:
Interest payments	12	13
Income tax payments	$ 4,062	$ 24