Note 15 - Benefit Plans (Details) - Defined Benefit Pension Plan Assets Measured at Fair Value (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Note 15 - Benefit Plans (Details) - Defined Benefit Pension Plan Assets Measured at Fair Value [Line Items]
Pension Plan assets	$ 17,429	$ 16,798
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	1,994	7,804
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	$ 15,435	$ 8,994