Note 1 - Summary of Significant Interim Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2015

Notes Tables

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015		2014
Net earnings used in the computation of basic and diluted earnings per share	$	3,624,000	$	3,907,000	$	5,667,000	$	5,125,000
Weighted average shares outstanding - basic		13,730,646		13,207,804		13,657,784		13,168,375
Common stock equivalents		846,696		440,736		904,929		432,765
Weighted average shares outstanding - diluted		14,577,342		13,648,540		14,562,713		13,601,140
Per Share Data:
Basic
Net earnings	$	0.26	$	0.30	$	0.41	$	0.39
Diluted
Net earnings	$	0.25	$	0.29	$	0.39	$	0.38

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

	No. of			Weighted Average
	Shares			Exercise Price
Outstanding December 31, 2014		1,118,058		$	6.63
Granted		103,308			18.46
Exercised		(212,540	)		7.27
Lapsed		(5,000	)		5.78
Cancelled		-			-
Outstanding June 30, 2015		1,003,826		$	7.71

Schedule of Share-based Compensation, Stock Appreciation Rights Award Activity [Table Text Block]

	No. of			Weighted Average
	Shares			Exercise Price
Outstanding December 31, 2014		522,024		$	6.17
Granted		53,292			18.66
Exercised		(139,542	)		5.77
Lapsed		-			-
Cancelled		-			-
Outstanding June 30, 2015		435,774		$	7.82

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

Three months ended
June 30,	SARS	Options
Exercise price
2015	N/A		$16.78
2014	N/A		$7.96
Market price
2015	N/A		$16.78
2014	N/A		$7.96
Risk free interest rate (1)
2015	N/A		2.1%
2014	N/A		2.6%
Expected award life (years) (2)	N/A		10
Expected volatility (3)
2015	N/A		39.0%
2014	N/A		37.3%
Expected dividend yield (4)
2015	N/A		1.8%
2014	N/A		3.4%

Six months ended
June 30,	SARS		Options
Exercise price
2015		$18.66		$16.78	-	$18.66
2014		$7.36		$7.36	-	$7.96
Market price
2015		$18.66		$16.78	-	$18.66
2014		$7.36		$7.36	-	$7.96
Risk free interest rate (1)
2015		1.5%		1.5%	-	2.1%
2014		1.5%		1.5%	-	2.6%
Expected award life (years) (2)		5		5	-	10
Expected volatility (3)
2015		34.9%		34.9%	-	39.0%
2014		42.5%		37.3%	-	42.5%
Expected dividend yield (4)
2015		1.6%		1.6%	-	1.8%
2014		3.7%		3.4%	-	3.7%