Note 3 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member]
Note 3 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value [Line Items]
Fair value of derivatives	$ (1,435)	$ 1,236
Fair Value, Inputs, Level 2 [Member] | Commodity Contract [Member]
Note 3 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value [Line Items]
Fair value of derivatives	77	69
Fair Value, Inputs, Level 2 [Member] | Foreign Exchange Contract [Member]
Note 3 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value [Line Items]
Fair value of derivatives	(97)	56
Interest Rate Swap [Member]
Note 3 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value [Line Items]
Fair value of derivatives	(1,435)	1,236
Commodity Contract [Member]
Note 3 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value [Line Items]
Fair value of derivatives	77	69
Foreign Exchange Contract [Member]
Note 3 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value [Line Items]
Fair value of derivatives	$ (97)	$ 56