Note 6 - Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2013

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

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

Risk-free interest rates	0.57%
Expected lives (in years)	4.25
Dividend yield	0.80%
Expected volatility	35.76%
Forfeiture rate	0.00%

Risk-free interest rates	0.77%
Expected lives (in years)	4.625
Dividend yield	0.70%
Expected volatility	38.13%
Forfeiture rate	6.37%