Note 15 - Benefit Plans (Details) - Defined Benefit Pension Plan Assets Measured at Fair Value (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Note 15 - Benefit Plans (Details) - Defined Benefit Pension Plan Assets Measured at Fair Value [Line Items]
Pension Plan assets	$ 17,923	$ 17,429
Fair Value, Inputs, Level 1 [Member]
Note 15 - Benefit Plans (Details) - Defined Benefit Pension Plan Assets Measured at Fair Value [Line Items]
Pension Plan assets	2,344	1,994
Fair Value, Inputs, Level 2 [Member]
Note 15 - Benefit Plans (Details) - Defined Benefit Pension Plan Assets Measured at Fair Value [Line Items]
Pension Plan assets	$ 15,579	$ 15,435