Note 8 - Deposits and Borrowed Funds (Detail) - Borrowed funds, highest month end balances (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Securities Sold under Agreements to Repurchase [Member]
Highest Balance at Any Month-end	$ 116,974	$ 115,689
Federal Home Loan Bank Advances [Member]
Highest Balance at Any Month-end	26,004	61,619
Line of Credit [Member]
Highest Balance at Any Month-end		10,150
Term Repurchase Agreements [Member]
Highest Balance at Any Month-end	$ 10,000	$ 10,000