CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $)	Jun. 30, 2014	Mar. 31, 2014
Current assets:
Cash and cash equivalents	$ 10,221,690	$ 8,681,609
Short-term investments	400,000	3,451,086
Accounts receivable, net	2,614,655	2,875,275
Inventories	609,877	517,217
Other	536,830	507,299
Total current assets	14,383,052	16,032,486
Property, plant, and equipment, net	980,412	997,609
Intangible assets, net	111,654	119,980
Prepaid pension assets	0	855
Deferred tax assets	146,609	150,116
Total assets	15,621,727	17,301,046
Current liabilities:
Accounts payable	954,832	904,879
Current portion - deferred rent	0	2,917
Income taxes payable	24,429	21,922
Accrued liabilities:
Compensation	2,094,907	1,999,966
Other	423,428	479,373
Total current liabilities	3,497,596	3,409,057
Deferred rent - less current portion	25,832	171
Accrued pension liability	715,807	678,118
Total liabilities	4,239,235	4,087,346
Commitments and contingencies
Shareholders' equity:
Common stock $.01 par value; 40,000,000 shares authorized, 22,045,893 and 21,653,835 shares issued and outstanding at June 30, 2014 and March 31, 2014, respectively	220,459	216,538
Additional paid-in capital	58,012,759	57,655,628
Accumulated deficit	(46,364,403)	(44,174,071)
Accumulated other comprehensive loss	(486,323)	(484,395)
Total shareholders' equity	11,382,492	13,213,700
Total liabilities and shareholders' equity	$ 15,621,727	$ 17,301,046