Note 5 - Fair Value Measurements and Fair Value of Financial Instruments (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Note 5 - Fair Value Measurements and Fair Value of Financial Instruments (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Fair Value of Derivatives	$ 1,516	$ 1,412
Fair Value, Inputs, Level 1 [Member]
Note 5 - Fair Value Measurements and Fair Value of Financial Instruments (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Fair Value of Derivatives	0	0
Fair Value, Inputs, Level 2 [Member]
Note 5 - Fair Value Measurements and Fair Value of Financial Instruments (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Fair Value of Derivatives	1,516	1,412
Fair Value, Inputs, Level 3 [Member]
Note 5 - Fair Value Measurements and Fair Value of Financial Instruments (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Fair Value of Derivatives	$ 0	$ 0