CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities:
Net income (loss)	$ 2,386	$ (162)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Write-off of engineering project development qualification units		67
Shipped qualification assets		2
Depreciation and amortization	394	587
Non-cash reserve accretion	69	76
Stock based compensation	237	315
Provision for losses on accounts receivable	31	4
Deferred taxes-net	494	353
Changes in assets and liabilities:
(Increase) decrease in accounts receivable and other receivables	7,254	5,897
(Increase) decrease in inventories	(6,355)	(1,064)
(Increase) decrease in prepaid and income taxes receivable	51	(114)
(Increase) decrease in other assets	(432)	(195)
Increase (decrease) in accounts payable	407	(1,590)
Increase (decrease) in accrued compensation	(1,041)	(771)
Increase (decrease) in accrued income taxes	(1,921)	(358)
Increase (decrease) in other liabilities	(397)	(392)
Net cash provided by operating activities	1,177	2,655
Cash flows from investing activities:
Capital expenditures	(134)	(99)
Net cash used in investing activities	(134)	(99)
Cash flows from financing activities:
Exercise of stock options	279	332
Net cash provided by financing activities	279	332
Increase in cash	1,322	2,888
Cash at beginning of period	22,806	6,021
Cash at end of period	24,128	8,909
Supplemental information:
Interest payments	6	6
Income tax payments	$ 2,841	$ 24