Note 11 - Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2017

Notes Tables

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

	201 7					201 6					201 5
				Weighted					Weighted					Weighted
				Average					Average					Average
	Option			Exercise		Option			Exercise		Option			Exercise
	Shares			Price		Shares			Price		Shares			Price
Outstanding at January 1		56,400		$	5.14		68,400		$	5.17		72,400		$	5.16
Granted		-			-		-			-		-			-
Forfeited or cancelled		(12,000	)		5.14		(12,000	)		5.30		(2,000	)		4.96
Exercised		(44,400	)		5.14		-			-		(2,000	)		4.96
Outstanding at December 31		-		$	-		56,400		$	5.14		68,400		$	5.17
Exercisable at end of year		-		$	-		56,400		$	5.14		68,400		$	5.17
Weighted-average fair value of options granted during year		n/a					n/a					n/a

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]

	Shares			Grant Fair Value
Balance, January 1, 2016		60,432		$	8.97
Granted		33,685			7.14
Forfeited		(8,187	)		8.97
Vested		(20,780	)		8.97
Balance, December 31, 2016		65,150		$	8.03
Balance, January 1, 201 7		65,150		$	8.03
Granted		9,005			8.05
Forfeited		(4,054	)		8.97
Vested		(33,300	)		8.97
Balance, December 31, 201 7		36,801		$	8.03

Schedule of Unrecognized Compensation Cost, Nonvested Awards [Table Text Block]

201 8	$	100,127
201 9		58,126
20 20		14,853
202 1		1,208