Note 11 - Restrictions on Dividends (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Note 11 - Restrictions on Dividends (Details) [Line Items]
Proceeds from Dividends Received	$ 7,782	$ 7,639	$ 7,258
Period of Restriction on Retained Net Income Without Prior Approval	2 years
Statutory Accounting Practices, Statutory Amount Available for Dividend Payments without Regulatory Approval	31,484
NBSF [Member]
Note 11 - Restrictions on Dividends (Details) [Line Items]
Proceeds from Dividends Received	$ 100