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Note 15 - Contingent Liabilities and Commitments (Detail) - Summary of the Future Minimum Payments Required Under Leases (USD $)	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
2013					$ 67,817
2013					280,808
2014				11,303
2014				286,243
2015			291,678
2016		297,113
2017 and beyond	99,643
Total minimum lease payments	79,120
Total minimum lease payments	1,255,485
Less amounts of lease payments that represent interest	7,518
Present value of future minimum capital lease payments	71,602
Less current obligations under capital leases	60,711
	$ 10,891