Note 12 - Income Taxes (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Note 12 - Income Taxes (Details) [Line Items]
Unrecognized Tax Benefits, Income Tax Penalties Expense	$ 0	$ 260,000	$ 82,000
Unrecognized Tax Benefits, Interest on Income Taxes Expense	21,000	94,000	$ 47,000
Unrecognized Tax Benefits, Income Tax Penalties Accrued		342,000
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	162,000	141,000
Pro Forma [Member] | Adjustments for New Accounting Pronouncement [Member]
Note 12 - Income Taxes (Details) [Line Items]
Stockholders' Equity, Period Increase (Decrease)	17,200,000	$ 6,300,000
Foreign Tax Credit [Member]
Note 12 - Income Taxes (Details) [Line Items]
Tax Credit Carryforward, Amount	11,400,000
AMT [Member]
Note 12 - Income Taxes (Details) [Line Items]
Tax Credit Carryforward, Amount	102,000
Domestic Tax Authority [Member]
Note 12 - Income Taxes (Details) [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration	13,900,000
State and Local Jurisdiction [Member]
Note 12 - Income Taxes (Details) [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration	22,000,000
Foreign Tax Authority [Member]
Note 12 - Income Taxes (Details) [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration	$ 800,000,000,000