Note 16 - Benefit Plans (Details) - Fair Value of Pension Plan Assets by Major Category - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Note 16 - Benefit Plans (Details) - Fair Value of Pension Plan Assets by Major Category [Line Items]
Pension Plan assets	$ 17,368	$ 17,429
Cash and Cash Equivalents [Member]
Note 16 - Benefit Plans (Details) - Fair Value of Pension Plan Assets by Major Category [Line Items]
Pension Plan assets	1,501	902
Mutual Funds [Member]
Note 16 - Benefit Plans (Details) - Fair Value of Pension Plan Assets by Major Category [Line Items]
Pension Plan assets	909	902
Corporate Stocks [Member]
Note 16 - Benefit Plans (Details) - Fair Value of Pension Plan Assets by Major Category [Line Items]
Pension Plan assets	1,076	1,085
Exchange Traded Funds [Member]
Note 16 - Benefit Plans (Details) - Fair Value of Pension Plan Assets by Major Category [Line Items]
Pension Plan assets	13,813	14,351
Foreign Equities [Member]
Note 16 - Benefit Plans (Details) - Fair Value of Pension Plan Assets by Major Category [Line Items]
Pension Plan assets	66	182
Other Plan Assets [Member]
Note 16 - Benefit Plans (Details) - Fair Value of Pension Plan Assets by Major Category [Line Items]
Pension Plan assets	$ 3	$ 7