CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $)	Dec. 31, 2014	Mar. 31, 2014
Current assets:
Cash and cash equivalents	$ 8,703,789	$ 8,681,609
Short-term investments	0	3,451,086
Accounts receivable, net	2,567,403	2,875,275
Inventories	437,471	517,217
Other	449,046	507,299
Total current assets	12,157,709	16,032,486
Property, plant, and equipment, net	946,726	997,609
Intangible assets, net	95,845	119,980
Prepaid pension assets	0	855
Deferred tax assets	127,625	150,116
Total assets	13,327,905	17,301,046
Current liabilities:
Accounts payable	1,193,692	904,879
Current portion - deferred rent	0	2,917
Current portion - capital lease obligation	4,434	0
Income taxes payable	23,729	21,922
Accrued liabilities:
Compensation	2,199,586	1,999,966
Other	394,732	479,373
Total current liabilities	3,816,173	3,409,057
Deferred rent - less current portion	26,644	171
Capital lease obligation - less current portion	18,411	0
Long-term incentive plan	131,907	0
Accrued pension liability	543,934	678,118
Total liabilities	4,537,069	4,087,346
Commitments and contingencies
Shareholders' equity:
Common stock $.01 par value; 40,000,000 shares authorized, 22,145,993 and 21,653,835 shares issued and outstanding at December 31, 2014 and March 31, 2014, respectively	221,460	216,538
Additional paid-in capital	58,785,632	57,655,628
Accumulated deficit	(49,549,988)	(44,174,071)
Accumulated other comprehensive loss	(666,268)	(484,395)
Total shareholders' equity	8,790,836	13,213,700
Total liabilities and shareholders' equity	$ 13,327,905	$ 17,301,046