CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Cash flows from operating activities:
Net income	$ 5,641	$ 4,076	$ 3,776
Adjustments to reconcile net income to net cash provided by operating activities:
Write-off of engineering project development qualification units	399	398	4,429
Shipped qualification assets	747	124
Depreciation and amortization	1,699	1,475	1,709
Non-cash interest expense	333	393	419
Stock based compensation	672	813	675
Provision for losses on accounts receivable	31	17	62
Deferred taxes-net	2,127	2,462	2,654
Changes in assets and liabilities:
(Increase) decrease in accounts receivable and other receivables	(8,267)	3,431	(943)
(Increase) decrease in inventories	(1,119)	(3,816)	430
(Increase) decrease in other assets	(228)	(597)	511
Increase (decrease) in accounts payable	1,916	(253)	(2,262)
Increase (decrease) in other liabilities	(2,980)	(1,029)	(1,151)
Net cash provided by operating activities	971	7,494	10,309
Cash flows from investing activities:
Capital expenditures	(997)	(458)	(726)
Capitalized qualification units and pre-qualification assets	(1,520)	(2,513)	(2,654)
Net cash used in investing activities	(2,517)	(2,971)	(3,380)
Cash flows from financing activities:
Payments on long-term debt		(10,679)	(821)
Net borrowings (repayments) of other debt
Payment of debt issue costs	(33)
Exercise of stock options	912	161	194
Net cash provided by (used in) financing activities	879	(10,518)	(627)
(Decrease) increase in cash	(667)	(5,995)	6,302
Cash at beginning of year	6,688	12,683	6,381
Cash at end of year	6,021	6,688	12,683
Supplemental information:
Interest payments	39	92	305
Income tax payments	1,909	806	176
Non-cash financing activity for stock option exercise		$ 122	$ 82