CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS (unaudited) (USD $)	3 Months Ended		6 Months Ended
	Nov. 30, 2011	Nov. 30, 2010	Nov. 30, 2011	Nov. 30, 2010
Revenues
Equipment sales	$ 876,751	$ 1,188,756	$ 1,151,711	$ 1,913,275
Equipment rentals and services	456,210	600,798	943,198	1,144,690
Commissions	8,620,367	2,011,188	12,186,855	2,018,624
Total revenues	9,953,328	3,800,742	14,281,764	5,076,589
Cost of revenues
Cost of sales, equipment	539,297	791,855	700,251	1,191,184
Cost of equipment rentals and services	222,031	225,016	460,878	461,709
Cost of commissions	1,799,933	421,963	2,902,041	423,913
Total cost of revenues	2,561,261	1,438,834	4,063,170	2,076,806
Gross profit	7,392,067	2,361,908	10,218,594	2,999,783
Operating expenses
Selling, general and administrative	4,791,028	3,408,868	9,165,913	6,513,547
Research and development	138,426	106,079	273,555	216,468
Total operating expenses	4,929,454	3,514,947	9,439,468	6,730,015
Operating income/(loss)	2,462,613	(1,153,039)	779,126	(3,730,232)
Other income (expenses)
Interest and financing costs	(4,612)	(2,853)	(6,872)	(6,496)
Interest and other income, net	21,666	12,612	42,851	16,144
Amortization of deferred gain on sale-leaseback of building	13,312	13,312	26,623	26,623
Total other income, net	30,366	23,071	62,602	36,271
Income/(loss) before income taxes	2,492,979	(1,129,968)	841,728	(3,693,961)
Income tax benefit/(expense), net	(24,329)	(1,500)	(26,129)	(7,330)
Net income/(loss)	2,468,650	(1,131,468)	815,599	(3,701,291)
Preferred stock dividends	(1,135,869)	(124,403)	(1,221,362)	(152,111)
Net loss applicable to common stockholders	1,332,781	(1,255,871)	(405,763)	(3,853,402)
Other comprehensive income/(loss)
Foreign currency adjustments	3,999	0	3,999	0
Comprehensive income/(loss)	$ 1,336,780	$ (1,255,871)	$ (401,764)	$ (3,853,402)
Net income/(loss) per common share
- basic (in dollars per share)	$ 0.01	$ (0.01)	$ 0.00	$ (0.03)
- diluted (in dollars per share)	$ 0.01	$ (0.01)	$ 0.00	$ (0.03)
Weighted average common shares outstanding
- basic (in shares)	153,310,322	111,123,353	145,387,954	110,775,966
- diluted (in shares)	160,078,677	111,123,353	145,387,954	110,775,966