Note 11 - Income Taxes (Details) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013
Note 11 - Income Taxes (Details) [Line Items]
Effective Income Tax Rate Reconciliation, Percent	33.10%	22.30%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%
Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount	$ 1,019,000	$ 1,146,000
Operating Loss Carryforwards, Valuation Allowance			111,300,000
Deferred Tax Assets, Investments			700,000
Deferred Tax Assets, Tax Credit Carryforwards, General Business			71,400,000
Deferred Tax Assets, Valuation Allowance			111,300,000	114,800,000
Undistributed Earnings of Foreign Subsidiaries			75,900,000
Domestic Tax Authority [Member]
Note 11 - Income Taxes (Details) [Line Items]
Operating Loss Carryforwards			251,400,000
State and Local Jurisdiction [Member]
Note 11 - Income Taxes (Details) [Line Items]
Operating Loss Carryforwards			216,500,000
Minimum [Member] | Investment Tax Credit Carryforward [Member]
Note 11 - Income Taxes (Details) [Line Items]
Tax Credit Carryforward Expiration Year			2022
Minimum [Member] | General Business Tax Credit Carryforward [Member]
Note 11 - Income Taxes (Details) [Line Items]
Tax Credit Carryforward Expiration Year			2026
Maximum [Member] | Investment Tax Credit Carryforward [Member]
Note 11 - Income Taxes (Details) [Line Items]
Tax Credit Carryforward Expiration Year			2024
Maximum [Member] | General Business Tax Credit Carryforward [Member]
Note 11 - Income Taxes (Details) [Line Items]
Tax Credit Carryforward Expiration Year			2034
Investment Tax Credit Carryforward [Member]
Note 11 - Income Taxes (Details) [Line Items]
Tax Credit Carryforward Expiration Period			20 years
General Business Tax Credit Carryforward [Member]
Note 11 - Income Taxes (Details) [Line Items]
Tax Credit Carryforward Expiration Period			20 years