Note 1 - Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 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		15,750		$	41.38
Vested		(8,100	)	$	18.77
Forfeitures		(700	)	$	33.96
Unvested, June 30, 2014		127,133		$	33.22

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 at January 1, 2014		164,150		$	38.21		1.7	$	1,224
Expired		(12,000	)	$	37.50
Options outstanding and exercisable at June 30, 2014		152,150		$	38.27		1.3	$	9