Note 2 - Liquidity and Managements' Plans (Details Textual) - USD ($)			6 Months Ended
	Aug. 10, 2017	Aug. 08, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2014
Available Liquidity			$ 2,100,000
Long-term Debt			454,815		$ 622,872
Cash			621,000
The 2017 Credit Agreement [Member] | East West Bank [Member] | Subsequent Event [Member]
Line of Credit Facility, Expiration Period	3 years	3 years
Line of Credit Facility, Maximum Borrowing Capacity	$ 30,000,000	$ 30,000,000
Line of Credit Facility, Remaining Borrowing Capacity	$ 4,700,000
Two Thousand Fourteen Credit Agreement [Member] | Revolving Credit Facility [Member]
Repayments of Lines of Credit			3.50
Debt Instrument, Required Funds to be Raised				$ 1,500,000
Line of Credit Facility, Maximum Borrowing Capacity						$ 30,000,000
Long-term Debt			20,400,000		23,200,000
Line of Credit Facility, Remaining Borrowing Capacity			$ 1,500,000		$ 4,500,000
Two Thousand Fourteen Credit Agreement [Member] | Revolving Credit Facility [Member] | Subordinated Debt [Member]
Debt Instrument, Required Additional Funds to be Raised				$ 1,000,000