Note 12 - Regulatory Matters (Details) (USD $)	0 Months Ended			3 Months Ended
	Mar. 10, 2014	Feb. 10, 2014	Jan. 16, 2014	Mar. 31, 2014	Dec. 31, 2013	Dec. 31, 2009
Disclosure Text Block [Abstract]
Trust Preferred Securities Included in Tier One Capital				$ 32,000,000	$ 32,000,000
Maximum Restricted Core Element Allowed in Tier One Capital Percent				25.00%
Maximum Level of Consolidated Aggregate Assets Allowing for Inclusion of Trust Preferred Securities in Tier One Capital Under Dodd Frank Act						$ 15,000,000,000
Dividends Payable, Date Declared			Jan. 16, 2014
Common Stock, Dividends, Per Share, Declared			$ 0.12
Dividends Payable, Date to be Paid	Mar. 10, 2014
Dividends Payable, Date of Record		Feb. 10, 2014