Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Cash flows from operating activities:
Net income (loss)	$ (828)	$ 598
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	364	376
Non-cash reserve accretion	101	106
Stock based compensation	253	136
Provision for losses on accounts receivable	4	13
Deferred taxes-net	(500)	393
Changes in assets and liabilities:
Decrease in accounts receivable and other receivables	7,322	5,745
Increase in inventories	(5,990)	(2,582)
Decrease (increase) in other assets	(43)	(2)
Increase in accounts payable	1,992	1,940
(Decrease) increase in accrued compensation	(306)	250
(Decrease) increase in accrued income taxes	(199)	1
Decrease in other liabilities	(362)	(1,098)
Net cash provided by operating activities	1,808	5,876
Cash flows from investing activities:
Capital expenditures	(32)	(713)
Capitalized qualification units		(467)
Net cash used in investing activities	(32)	(1,180)
Cash flows from financing activities:
Payments on long-term debt	(10,679)	(821)
Net borrowings (repayments) of other debt
Exercise of stock options	1	194
Net cash used in financing activities	(10,678)	(627)
(Decrease) increase in cash	(8,902)	4,069
Cash at beginning of period	12,683	6,381
Cash at end of period	3,781	10,450
Supplemental information:
Interest payments	51	112
Income tax payments	98	40
Non-cash financing activity for stock option exercise	$ 122	$ 82