|
Note 5 - Stock Based Compensation (Details) (USD $)
|
6 Months Ended | 6 Months Ended | 0 Months Ended | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Jun. 30, 2014
|
Jun. 30, 2013
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Jun. 30, 2014
Employee Stock Option [Member]
Contractual Term with One-fifth Yearly Vesting [Member]
|
Jun. 30, 2014
Employee Stock Option [Member]
Contractual Term with One-third Yearly Vesting [Member]
|
Jun. 30, 2014
Employee Stock Option [Member]
The 2004 Stock Option Plan [Member]
|
Jun. 30, 2014
Director Stock Options [Member]
The 2003 Outside Directors Stock Plan [Member]
|
Jun. 30, 2014
Director Stock Options [Member]
|
Jul. 25, 2011
Chief Operating Officer [Member]
The 2010 Stock Option Plan [Member]
|
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| Note 5 - Stock Based Compensation (Details) [Line Items] | ||||||||||||||||
| Share Based Compensation Maximum Contractual Term | 10 years | 6 years | 10 years | 6 years | ||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 5 years | 3 years | 6 months | 3 years | ||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares) | 0 | 0 | 60,000 | |||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number (in Shares) | 300,800 | [1] | 390,800 | [2] | 362,800 | 528,800 | 131,600 | 169,200 | ||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number (in Shares) | 300,800 | [1] | 350,800 | [2] | 131,600 | 169,200 | ||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price (in Dollars per share) | $ 9.85 | [1] | $ 9.98 | [2] | $ 9.53 | $ 9.82 | $ 10.72 | $ 9.18 | ||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term | 73 days | 4 years 292 days | ||||||||||||||
| Reduction in Stock Based Compensation Expense (in Dollars) | $ 54,000 | |||||||||||||||
| Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in Dollars per share) | $ 7.85 | |||||||||||||||
|
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