Quarterly report pursuant to Section 13 or 15(d)

Note 6 - Stock Plans and Stock Based Compensation (Details) - Company Stock Plan

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Note 6 - Stock Plans and Stock Based Compensation (Details) - Company Stock Plan (USD $)
In Thousands, except Share data, unless otherwise specified
9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Company Stock Plan [Abstract]    
Shares 362,800 528,800
Weighted Average Exercise Price $ 9.53 $ 9.82
Shares 71,800 18,000
Weighted Average Exercise Price $ 4.70 $ 2.79
Shares (1,257)  
Weighted Average Exercise Price $ 2.79  
Aggregate Intrinsic Value $ 2,319  
Shares (187,000) (156,000)
Weighted Average Exercise Price $ 10.04 $ 8.28
Shares 246,343 [1] 390,800 [2]
Weighted Average Exercise Price $ 7.77 [1] $ 9.66 [2]
Weighted Average Remaining Contractual Term 5 years 36 days [1] 3 years 73 days [2]
Aggregate Intrinsic Value 23,065 [1] 15,900 [2]
Shares 174,543 [1] 352,800 [2]
Weighted Average Exercise Price $ 9.04 [1] $ 10.11 [2]
Weighted Average Remaining Contractual Term 4 years 146 days [1] 2 years 328 days [2]
Aggregate Intrinsic Value 21,049 [1]    [2]
Shares 237,543 390,800
Weighted Average Exercise Price $ 7.87 $ 9.66
Weighted Average Remaining Contractual Term 5 years 3 years 73 days
Aggregate Intrinsic Value $ 23,065 $ 15,900
[1] Options with exercise prices ranging from $2.79 to $14.75
[2] Options with exercise prices ranging from $5.50 to $14.75