Note 4 - Loans and Allowance for Credit Losses (Details) - Allowance for Credit Losses (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended			3 Months Ended	9 Months Ended				3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended			3 Months Ended	9 Months Ended		3 Months Ended	9 Months Ended			3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Sep. 30, 2014 Commercial [Member]	Sep. 30, 2013 Commercial [Member]	Sep. 30, 2014 Commercial [Member]	Sep. 30, 2013 Commercial [Member]	Dec. 31, 2013 Commercial [Member]	Sep. 30, 2014 Commercial Real Estate Loans [Member]	Sep. 30, 2013 Commercial Real Estate Loans [Member]	Sep. 30, 2014 Commercial Real Estate Loans [Member]	Sep. 30, 2013 Commercial Real Estate Loans [Member]	Dec. 31, 2013 Commercial Real Estate Loans [Member]	Sep. 30, 2013 Construction [Member]	Sep. 30, 2014 Construction [Member]	Sep. 30, 2013 Construction [Member]	Jun. 30, 2014 Construction [Member]	Dec. 31, 2013 Construction [Member]	Sep. 30, 2014 Residential Real Estate Loans [Member]	Sep. 30, 2013 Residential Real Estate Loans [Member]	Sep. 30, 2014 Residential Real Estate Loans [Member]	Sep. 30, 2013 Residential Real Estate Loans [Member]	Dec. 31, 2013 Residential Real Estate Loans [Member]	Sep. 30, 2014 Consumer Installment And Other [Member]	Sep. 30, 2013 Consumer Installment And Other [Member]	Sep. 30, 2014 Consumer Installment And Other [Member]	Sep. 30, 2013 Consumer Installment And Other [Member]	Dec. 31, 2013 Consumer Installment And Other [Member]	Sep. 30, 2014 Purchased Non-Covered Loans [Member]	Sep. 30, 2014 Purchased Non-Covered Loans [Member]	Sep. 30, 2013 Purchased Non-Covered Loans [Member]	Sep. 30, 2013 Purchased Covered Loans [Member]	Sep. 30, 2014 Purchased Covered Loans [Member]	Sep. 30, 2013 Purchased Covered Loans [Member]	Dec. 31, 2013 Purchased Covered Loans [Member]	Sep. 30, 2014 Unallocated Financing Receivable [Member]	Sep. 30, 2013 Unallocated Financing Receivable [Member]	Sep. 30, 2014 Unallocated Financing Receivable [Member]	Sep. 30, 2013 Unallocated Financing Receivable [Member]	Dec. 31, 2013 Unallocated Financing Receivable [Member]
Allowance for loan losses:
Balance at Beginning of Period	$ 32,398	$ 30,926	$ 31,693	$ 30,234		$ 5,297	$ 4,384	$ 4,005	$ 6,445		$ 10,664	$ 11,275	$ 12,070	$ 10,063		$ 478	$ 602	$ 484	$ 442		$ 409	$ 532	$ 405	$ 380		$ 2,055	$ 2,603	$ 3,198	$ 3,194		$ 2,707			$ 285	$ 1,561	$ 1,005		$ 10,824	$ 11,369	$ 9,852	$ 8,663
Additions:
Provision	600	1,800	2,600	6,400		(269)	102	945	(667)		(640)	447	(2,224)	2,100		53	(163)	47			(17)	(104)	17	157		802	1,154	942	1,660		(184)	1,203	116	1,300		1,433		908	(1,152)	1,880	1,554
Deductions:
Chargeoffs	(1,821)	(1,742)	(4,621)	(7,637)		(905)	(637)	(1,114)	(2,687)			(117)		(656)									(30)	(109)		(916)	(909)	(3,217)	(3,114)			(260)	(116)	(79)		(955)
Recoveries	592	932	2,097	2,919		229	326	516	1,084		15	30	193	128			3									297	516	1,315	1,624		51	70		60		83
Net Loan Losses	(1,229)	(810)	(2,524)	(4,718)		(676)	(311)	(598)	(1,603)		15	(87)	193	(528)			3						(30)	(109)		(619)	(393)	(1,902)	(1,490)		51	(190)	(116)	(19)		(872)
Indemnification expiration																																1,561			(1,561)
Balance at End of Period	31,769	31,916	31,769	31,916		4,352	4,175	4,352	4,175		10,039	11,635	10,039	11,635		531	442	531	442		392	428	392	428		2,238	3,364	2,238	3,364		2,574	2,574		1,566		1,566		11,732	10,217	11,732	10,217
Liability for Off-Balance Sheet Credit Exposure	2,693	2,693	2,693	2,693		1,706	1,613	1,706	1,613		24		24			103	105	103								451	483	451	483		131	131						276	494	276	494
Total Allowance for Credit Losses	$ 34,462	$ 34,609	$ 34,462	$ 34,609	$ 34,386	$ 6,058	$ 5,788	$ 6,058	$ 5,788	$ 5,663	$ 10,063	$ 11,635	$ 10,063	$ 11,635	$ 12,070	$ 634	$ 547	$ 634		$ 639	$ 392	$ 428	$ 392	$ 428	$ 405	$ 2,689	$ 3,847	$ 2,689	$ 3,847	$ 3,695	$ 2,705	$ 2,705		$ 1,566		$ 1,566	$ 1,561	$ 12,008	$ 10,711	$ 12,008	$ 10,711	$ 10,353