Note 21 - Intangible Assets (Detail) - Acquired Core Deposit and Customer Relationship Iintangible Assets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Core deposit intangibles	$ 8,693	$ 12,119
Core deposit intangibles	1,394	2,409
Other customer relationship intangibles	8,693	12,119
Other customer relationship intangibles	1,394	2,409
Total	10,087	14,528
Total	8,693	12,119
Total	1,394	2,409
Core Deposits [Member]
Core deposit intangibles	6,398	10,839
Core deposit intangibles	5,444	9,039
Core deposit intangibles	954	1,800
Other customer relationship intangibles	5,444	9,039
Other customer relationship intangibles	954	1,800
Total	5,444	9,039
Total	954	1,800
Customer Relationships [Member]
Core deposit intangibles	3,249	3,080
Core deposit intangibles	440	609
Other customer relationship intangibles	3,689	3,689
Other customer relationship intangibles	3,249	3,080
Other customer relationship intangibles	440	609
Total	3,249	3,080
Total	$ 440	$ 609