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Note 11 - Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

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

		Beginning				Granted				Exercised				Canceled				Ending
		Balance				During				During				During				Balance
		Outstanding				Period				Period				Period				Outstanding				Exercisable
Year ended December 31, 2015
Number of shares			35,250				-0-				-0-				0				35,250				35,250
Weighted average exercise price
Per share		$	4.62				-0-				-0-				-0-			$	4.62			$	4.62
Year ended December 31, 2016
Number of shares			35,250				-0-				35,250				-0-				-0-				-0-
Weighted average exercise price
Per share		$	4.62				-0-			$	4.62				-0-				-0-				-0-

		Beginning				Granted				Exercised				Canceled				Ending
		Balance				During				During				During				Balance
		Outstanding				Period				Period				Period				Outstanding				Exercisable
Year ended December 31, 2015
Number of shares			124,480				-0-				-0-				-0-				124,480				124,480
Weighted average exercise price
Per share		$	4.57				-0-				-0-				-0-			$	4.57			$	4.57
Year ended December 31, 2016
Number of shares			124,480				-0-				64,750				-0-				59,730				59,730
Weighted average exercise price
Per share		$	4.57				-0-				4.62				-0-			$	4.51			$	4.51

		Beginning				Granted				Exercised				Canceled				Ending
		Balance				During				During				During				Balance
		Outstanding				Period				Period				Period				Outstanding				Exercisable
Year ended December 31, 2015
Number of shares			100,000				-0-				-0-				-0-				100,000				20,000
Weighted average exercise price
Per share		$	11.17				-0-				-0-				-0-			$	11.17			$	11.17
Year ended December 31, 2016
Number of shares			100,000				125,000				-0-				-0-				225,000				65,000
Weighted average exercise price
Per share		$	11.17				8.04				-0-				-0-			$	9.43			$	9.97

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

				Options Outstanding																Options Exercisable
								Weighted				Weighted												Weighted
								Average				Average												Average
Exercise				Number				Remaining				Exercise				Intrinsic				Number				Exercise				Intrinsic
Price Range				Outstanding				Contractual				Price				Value				Exercisable				Price				Value
$3.00	-	3.99			34,000				1.95			$	3.65			$	171,020				34,000			$	3.65			$	171,020
$4.00	-	4.49			15,930				4.04			$	4.25			$	70,570				15,930			$	4.25			$	70,570
$5.00	-	7.99			9,800				5.04			$	7.90			$	7,644				9,800			$	7.90			$	7,644
$8.00	-	12.00			225,000				6.64			$	9.43			$	0				65,000			$	9.43			$	0

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

						Weighted
		Shares of				Average Grant
		Restricted				Date Fair
		Stock				Value
Unvested outstanding at January 1, 2015			8,000			$	10.97
Granted			9,211			$	13.66
Vested			(13,211	)		$	12.84
Forfeited/Cancelled			-
Unvested outstanding at December 31, 2015			4,000			$	10.97
Granted			17,524			$	8.45
Vested			(21,524	)		$	12.84
Forfeited/Cancelled			-
Unvested outstanding at December 31, 2016			-0-

						Weighted
		Shares of				Average Grant
		Restricted				Date Fair
		Stock Units				Value
Unvested outstanding at January 1, 2015			103,319			$	11.71
Granted			24,210			$	14.61
Vested			(24,892	)		$	11.55
Forfeited/Cancelled			(8,057	)		$	10.54
Unvested outstanding at December 31, 2015			94,580			$	12.55
Granted			60,400			$	8.56
Vested			(33,890	)		$	12.43
Forfeited/Cancelled			(7,000	)		$	11.68
Unvested outstanding at December 31, 2016			114,090			$	10.47

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- Definition

Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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+ References

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-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
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