Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands	Jun. 30, 2011	Mar. 31, 2011
Assets
Cash and cash equivalents	$ 12,557	$ 11,560
Short-term investments	1,012	1,011
Accounts receivable, net of allowances of $436 and $491	29,920	27,618
Inventories, net	32,174	29,507
Deferred tax assets	1,179	947
Prepaid expenses and other current assets	2,206	2,499
Total current assets	79,048	73,142
Property and equipment, net	30,126	30,017
Patents and licenses, net	1,631	1,620
Long-term accounts receivable	7,985	6,030
Deferred tax assets	2,305	2,112
Other long-term assets	2,033	2,069
Total assets	123,128	114,990
Liabilities and Shareholders' Equity
Accounts payable	16,553	12,479
Accrued expenses and other	2,544	2,324
Deferred revenue, current	1,242	262
Current maturities of long-term debt	1,855	1,137
Total current liabilities	22,194	16,202
Long-term debt, less current maturities	6,076	4,225
Deferred revenue, long-term	1,665	1,777
Other long-term liabilities	400	399
Total liabilities	30,335	22,603
Commitments and contingencies (See Note F)
Shareholders' equity:
Preferred stock, $0.01 par value: Shares authorized: 30,000,000 shares at March 31, 2011 and June 30, 2011; no shares issued and outstanding at March 31, 2011 and June 30, 2011	0	0
Common stock, no par value: Shares authorized: 200,000,000 at March 31, 2011 and June 30, 2011; shares issued: 30,312,758 and 30,393,053 at March 31, 2011 and June 30, 2011; shares outstanding: 22,893,803 and 22,983,886 at March 31, 2011 and June 30, 2011	0	0
Additional paid-in capital	125,426	124,805
Treasury stock: 7,431,897 and 7,409,167 common shares at March 31, 2011 and June 30, 2011	(31,671)	(31,708)
Shareholder notes receivable	(226)	(193)
Retained deficit	(736)	(517)
Total shareholders' equity	92,793	92,387
Total liabilities and shareholders' equity	$ 123,128	$ 114,990