Note 2 - Acquisition of M.C. Healthcare Products Inc. (Detail) - Reconciliation of the carrying amount of goodwill (USD $)			3 Months Ended
Jun. 30, 2012	Oct. 01, 2011	Jun. 30, 2012 M.C. Healthcare Acquisition [Member]
Goodwill at March 31, 2012	$ 4,466,519	$ 1,924,131	$ 2,525,359
Adjustment to record contingent consideration			68,166
Decrease in foreign currency exchange rate			(51,136)
Goodwill at June 30, 2012	$ 4,466,519	$ 1,924,131	$ 2,542,389

Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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