Note 6 - Goodwill and Core Deposit Premiums (Details) - Goodwill, Core Deposit Premiums and Purchased Credit Card Relationships (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Note 6 - Goodwill and Core Deposit Premiums (Details) - Goodwill, Core Deposit Premiums and Purchased Credit Card Relationships [Line Items]
Goodwill	$ 78,529	$ 78,529
Core deposit premiums:
Other misc. intangibles, net	27
Other intangible assets, net	14,094	14,972
Total goodwill and other intangible assets	92,623	93,501
Core Deposit Premium [Member]
Core deposit premiums:
Gross carrying amount	14,000	15,245
Accumulated amortization	(1,691)	(2,237)
Core deposit premiums, net	12,309	13,008
Purchased Credit Card Relationships [Member]
Core deposit premiums:
Gross carrying amount	2,068	2,068
Accumulated amortization	(310)	(104)
Purchased credit card relationships, net	$ 1,758	$ 1,964