Note 13 - Stock-Based Compensation (Details) (USD $)	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Note 13 - Stock-Based Compensation (Details) [Line Items]
Number of Share Based Compensation Plans	2
Employee Service Share-based Compensation, Tax Benefit Realized from Exercise of Stock Options	$ 0	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period (in Shares)	0	0
Allocated Share-based Compensation Expense	10,623	8,254
Restricted Stock [Member] \| 2008 Plan [Member]
Note 13 - Stock-Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number (in Shares)	10,425
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years
Allocated Share-based Compensation Expense	7,263	4,842
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	82,311
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	2 years 9 months
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in Shares)	0	13,900
Restricted Stock [Member]
Note 13 - Stock-Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in Shares)		13,900
Employee Stock Option [Member] \| Minimum [Member] \| 2008 Plan [Member]
Note 13 - Stock-Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	1 year
Employee Stock Option [Member] \| Maximum [Member] \| 2008 Plan [Member]
Note 13 - Stock-Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	5 years
Employee Stock Option [Member] \| 2008 Plan [Member]
Note 13 - Stock-Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	10 years
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	$ 183,049
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	4 years 9 months
1997 Stock Option Plan [Member]
Note 13 - Stock-Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number (in Shares)	30,750
2008 Plan [Member]
Note 13 - Stock-Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number (in Shares)	144,500
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares)	799,600

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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