Note 15 - Fair Value Measurements and Disclosures (Details) - Assets and Liabilities Measured on a Recurring Basis (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Financial Liabilities
Derivative Financial Instruments, Current Liabilities		$ 30us-gaap_DerivativeLiabilitiesCurrent
Fair Value, Inputs, Level 1 [Member] \| Fair Value, Measurements, Recurring [Member] \| Current Liabilities [Member]
Financial Liabilities
Derivative Financial Instruments, Current Liabilities	0	0
Fair Value, Inputs, Level 1 [Member] \| Fair Value, Measurements, Recurring [Member] \| Noncurrent Liabilities [Member]
Financial Liabilities
Derivative Financial Instruments, Non-current Liabilities	0	0
Fair Value, Inputs, Level 1 [Member] \| Fair Value, Measurements, Recurring [Member]
Financial Liabilities
Derivative Financial Instruments	0	0
Fair Value, Inputs, Level 2 [Member] \| Fair Value, Measurements, Recurring [Member] \| Current Liabilities [Member]
Financial Liabilities
Derivative Financial Instruments, Current Liabilities	0	30
Fair Value, Inputs, Level 2 [Member] \| Fair Value, Measurements, Recurring [Member] \| Noncurrent Liabilities [Member]
Financial Liabilities
Derivative Financial Instruments, Non-current Liabilities	0	0
Fair Value, Inputs, Level 2 [Member] \| Fair Value, Measurements, Recurring [Member]
Financial Liabilities
Derivative Financial Instruments	0	30
Fair Value, Inputs, Level 3 [Member] \| Fair Value, Measurements, Recurring [Member] \| Current Liabilities [Member]
Financial Liabilities
Derivative Financial Instruments, Current Liabilities	0	0
Fair Value, Inputs, Level 3 [Member] \| Fair Value, Measurements, Recurring [Member] \| Noncurrent Liabilities [Member]
Financial Liabilities
Derivative Financial Instruments, Non-current Liabilities	0	0
Fair Value, Inputs, Level 3 [Member] \| Fair Value, Measurements, Recurring [Member]
Financial Liabilities
Derivative Financial Instruments	$ 0	$ 0

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References+ Details

- Definition

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References+ Details