CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash flows from operating activities:
Net income (loss)	$ 1,373	$ (828)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	389	364
Non-cash reserve accretion	90	101
Stock based compensation	175	253
Provision for losses on accounts receivable	4	4
Deferred taxes-net	618	(500)
Changes in assets and liabilities:
Decrease in accounts receivable and other receivables	2,212	7,322
Increase in inventories	(3,061)	(4,922)
(Increase) decrease in other assets	(402)	242
Increase in accounts payable	1,606	1,992
Decrease in accrued compensation	(898)	(306)
Decrease in accrued income taxes	(526)	(199)
Decrease in other liabilities	(1,539)	(362)
Net cash provided by operating activities	41	3,161
Cash flows from investing activities:
Capital expenditures	(282)	(32)
Capitalized qualification units and pre-qualification assets	(25)	(1,353)
Net cash used in investing activities	(307)	(1,385)
Cash flows from financing activities:
Payments on long-term debt		(10,679)
Net borrowings (repayments) of other debt
Exercise of stock options	334	1
Net cash provided by (used in) financing activities	334	(10,678)
Increase (decrease) in cash	68	(8,902)
Cash at beginning of period	6,688	12,683
Cash at end of period	6,756	3,781
Supplemental information:
Interest payments	9	51
Income tax payments	751	98
Non-cash financing activity for stock option exercise		$ 122