NOTE 3 - LOANS/LEASES RECEIVABLE - Loans by Internally Assigned Risk Rating (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Loans and leases	$ 3,790,224	$ 3,723,630
Commercial Portfolio Segment [Member]
Loans and leases	1,479,247	1,429,410
Commercial Portfolio Segment [Member] | Internally Assigned Risk Rating [Member]
Loans and leases	1,366,479	1,326,006
Commercial Portfolio Segment [Member] | Pass [Member]
Loans and leases	1,333,088	1,294,418
Commercial Portfolio Segment [Member] | Special Mention [Member]
Loans and leases	17,813	23,302
Commercial Portfolio Segment [Member] | Substandard [Member]
Loans and leases	15,578	8,286
Commercial Real Estate Portfolio Segment [Member]
Loans and leases	1,790,845	1,766,111
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Commercial Real Estate Loans [Member]
Loans and leases	488,827	500,654
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Loans and leases	267,830	236,787
Commercial Real Estate Portfolio Segment [Member] | Other Non-owner Occupied Commercial Real Estate Loans [Member]
Loans and leases	1,034,188	1,028,670
Commercial Real Estate Portfolio Segment [Member] | Internally Assigned Risk Rating [Member] | Owner Occupied Commercial Real Estate Loans [Member]
Loans and leases	488,827	500,654
Commercial Real Estate Portfolio Segment [Member] | Internally Assigned Risk Rating [Member] | Construction Loans [Member]
Loans and leases	267,830	236,787
Commercial Real Estate Portfolio Segment [Member] | Internally Assigned Risk Rating [Member] | Other Non-owner Occupied Commercial Real Estate Loans [Member]
Loans and leases	1,034,188	1,028,670
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Owner Occupied Commercial Real Estate Loans [Member]
Loans and leases	481,630	487,949
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Construction Loans [Member]
Loans and leases	263,078	230,473
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Other Non-owner Occupied Commercial Real Estate Loans [Member]
Loans and leases	1,011,063	1,008,626
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Owner Occupied Commercial Real Estate Loans [Member]
Loans and leases	4,721	9,599
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Construction Loans [Member]
Loans and leases	65	3,848
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Other Non-owner Occupied Commercial Real Estate Loans [Member]
Loans and leases	2,170	5,309
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Owner Occupied Commercial Real Estate Loans [Member]
Loans and leases	2,476	3,106
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Construction Loans [Member]
Loans and leases	4,687	2,466
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Other Non-owner Occupied Commercial Real Estate Loans [Member]
Loans and leases	20,955	14,735
Commercial and Commercial Real Estate Portfolio Segments [Member] | Internally Assigned Risk Rating [Member]
Loans and leases	$ 3,157,324	$ 3,092,117
As a % of Total	100.00%	100.00%
Commercial and Commercial Real Estate Portfolio Segments [Member] | Pass [Member]
Loans and leases	$ 3,088,859	$ 3,021,466
As a % of Total	97.83%	97.72%
Commercial and Commercial Real Estate Portfolio Segments [Member] | Special Mention [Member]
Loans and leases	$ 24,769	$ 42,058
As a % of Total	0.78%	1.36%
Commercial and Commercial Real Estate Portfolio Segments [Member] | Substandard [Member]
Loans and leases	$ 43,696	$ 28,593
As a % of Total	1.38%	0.92%