Note 9 - Stock Option Plan (Tables)

12 Months Ended

Dec. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

Options	Shares			Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term		Aggregate Intrinsic Value
Outstanding at January 1, 2015		20,500		$	23.00
Granted		---			---
Exercised		(7,500	)		23.00
Forfeited or expired		(13,000	)		23.00
Outstanding at December 31, 2015		---		$	---		---	$	---
Exercisable at December 31, 2015		---		$	---		---	$	---