Note 1 - Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2014

Accounting Policies [Abstract]

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

	Shares			Weighted- Average Grant Date Fair Value
Unvested, January 1, 2014		120,183		$	31.18
Granted		15,050		$	41.76
Vested		(2,500	)	$	12.87
Forfeitures		(350	)	$	39.46
Unvested, March 31, 2014		132,383		$	32.71

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value [Table Text Block]

	Shares		Exercise Price*		Remaining Contractual Life (in years)*		Intrinsic Value of Unexercised In-The Money Options (in 000’s)
Options outstanding and exercisable at March 31, 2014		164,150	$	38.21		1.44	$	—