Note 12 - Contingent Liabilities and Commitments (Details) (USD $)					1 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2012 Lawrenceville, New Jersey [Member]	Jul. 31, 2011 Lawrenceville, New Jersey [Member] sqft	Apr. 30, 2012 Standby Letters of Credit [Member]
Note 12 - Contingent Liabilities and Commitments (Details) [Line Items]
Area of Real Estate Property (in Square Feet)						10,870
Lessee Leasing Arrangements, Operating Leases, Term of Contract						66 months
Number of Months in Which Free Rent is Provided						6 months
Payments for Rent					$ 23,000
Contractual Obligation	1,411,249	1,711,934					250,000
Escrow Deposit Related To Operating Lease				250,000
Contractual Obligation Reduction							50,000
Contractual Obligation Nineteen Months from Initial Term							50,000
Contractual Obligation Thirty One Months from Initial Term							50,000
Contractual Obligation Forty Three Months from Initial Term							50,000
Contractual Obligation Remaining							100,000
Reduction of Escrow Deposit			$ 50,000