CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $)	9 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities:
Net loss	$ (4,207,604)	$ (2,336,205)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	267,369	864,227
(Gain) loss on disposal of equipment	(5,000)	3,035
Amortization of premium on marketable securities	7,562	39,551
Share-based consulting expense	0	1,623
Share-based compensation expense	1,210,201	608,953
Deferred income tax expense	3,245	5,473
Deferred rent	(27,790)	(27,638)
Changes in operating assets and liabilities:
Accounts receivable, net	79,428	228,768
Inventories	255,207	(138,862)
Other current assets	16,868	(70,401)
Accounts payable	21,724	(82,514)
Accrued compensation	274,139	199,936
Accrued liabilities, other	(120,881)	67,147
Accrued pension liability, net	(39,011)	5,074
Net cash used in operating activities	(2,264,543)	(631,833)
Cash flows from investing activities:
Proceeds from maturity of available-for-sale investments	2,750,000	3,200,000
Proceeds from maturity of held-to-maturity investments	4,180,000	5,000,000
Purchases of available-for-sale investments	0	(4,921,036)
Purchases of held-to-maturity investments	0	(2,500,000)
Purchases of property, plant and equipment	(221,769)	(137,101)
Proceeds from sale of property, plant and equipment	6,773	7,038
Payments for intangible assets	(41,300)	(4,440)
Net cash provided by investing activities	6,673,704	644,461
Cash flows from financing activities:
Proceeds from exercise of options	172,485	150,000
Net cash provided by financing activities	172,485	150,000
Effect of exchange rate changes on cash and cash equivalents	48,741	(6,313)
Net increase in cash and cash equivalents	4,630,387	156,315
Cash and cash equivalents at beginning of period	3,533,864	4,653,226
Cash and cash equivalents at end of period	8,164,251	4,809,541
Cash paid during the period for income taxes	$ 34,640	$ 42,319