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Note 11 - Share-based Compensation (Tables)

12 Months Ended

Dec. 31, 2015

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

Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]

		Number of Shares Awarded (1)				Weighted Average Grant Date Fair Value (1)

Non-vested at December 31, 2012			4,456			$	17.30
2013 Granted			32,964				12.40
Vested			(9,238	)			14.10
Non-vested at December 31, 2013			28,182			$	12.60
2014 Granted			73,558				13.21
Vested			(22,532	)			11.76
Non-vested at December 31, 2014			79,208			$	12.79
2015 Granted			12,700				16.85
Vested			(32,015	)			13.14
Forfeited			(4,039	)			14.36
Non-vested at December 31, 2015			55,854			$	12.83