Note 11 - Transactions With Related Parties (Detail) - Extensions of credit to executive officers and to companies in which the subsidiary banks' executive officers or directors were principal owners: (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Balance, beginning of year	$ 28,472	$ 28,749
New extensions of credit	14,077	13,556
Repayments	(14,759)	(13,833)
Balance, end of year	$ 27,790	$ 28,472