Note 15 - Benefit Plans (Details) - Fair Value of Pension Plan Assets by Major Category (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Note 15 - Benefit Plans (Details) - Fair Value of Pension Plan Assets by Major Category [Line Items]
Pension Plan assets	$ 17,429	$ 16,798
Cash and Cash Equivalents [Member]
Note 15 - Benefit Plans (Details) - Fair Value of Pension Plan Assets by Major Category [Line Items]
Pension Plan assets	902	4,440
US Government Agencies Debt Securities [Member]
Note 15 - Benefit Plans (Details) - Fair Value of Pension Plan Assets by Major Category [Line Items]
Pension Plan assets		549
State and Municipal [Member]
Note 15 - Benefit Plans (Details) - Fair Value of Pension Plan Assets by Major Category [Line Items]
Pension Plan assets		470
Corporate Debt Securities [Member]
Note 15 - Benefit Plans (Details) - Fair Value of Pension Plan Assets by Major Category [Line Items]
Pension Plan assets		3,398
Mutual Funds [Member]
Note 15 - Benefit Plans (Details) - Fair Value of Pension Plan Assets by Major Category [Line Items]
Pension Plan assets	902	3,596
Corporate Stocks [Member]
Note 15 - Benefit Plans (Details) - Fair Value of Pension Plan Assets by Major Category [Line Items]
Pension Plan assets	1,085	3,329
Exchange Traded Funds [Member]
Note 15 - Benefit Plans (Details) - Fair Value of Pension Plan Assets by Major Category [Line Items]
Pension Plan assets	14,351	287
Foreign Equities [Member]
Note 15 - Benefit Plans (Details) - Fair Value of Pension Plan Assets by Major Category [Line Items]
Pension Plan assets	182	694
Accrued Interest Receivable [Member]
Note 15 - Benefit Plans (Details) - Fair Value of Pension Plan Assets by Major Category [Line Items]
Pension Plan assets		30
Other Plan Assets [Member]
Note 15 - Benefit Plans (Details) - Fair Value of Pension Plan Assets by Major Category [Line Items]
Pension Plan assets	$ 7	$ 5