NOTE 3 - LOANS/LEASES RECEIVABLE - Loans by Internally Assigned Risk Rating (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Loans and leases	$ 4,243,278	$ 3,681,346
Commercial Portfolio Segment [Member]
Loans and leases	1,823,049	1,507,825
Commercial Portfolio Segment [Member] | Internally Assigned Risk Rating [Member]
Loans and leases	1,660,962	1,365,847
Commercial Portfolio Segment [Member] | Pass [Member]
Loans and leases	1,610,503	1,334,446
Commercial Portfolio Segment [Member] | Special Mention [Member]
Loans and leases	25,547	12,962
Commercial Portfolio Segment [Member] | Substandard [Member]
Loans and leases	24,912	18,439
Commercial Real Estate Portfolio Segment [Member]
Loans and leases	1,999,715	1,736,396
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Commercial Real Estate Loans [Member]
Loans and leases	486,254	443,989
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Loans and leases	503,086	378,797
Commercial Real Estate Portfolio Segment [Member] | Other Non-owner Occupied Commercial Real Estate Loans [Member]
Loans and leases	1,010,375	913,610
Commercial Real Estate Portfolio Segment [Member] | Internally Assigned Risk Rating [Member] | Owner Occupied Commercial Real Estate Loans [Member]
Loans and leases	486,254	443,989
Commercial Real Estate Portfolio Segment [Member] | Internally Assigned Risk Rating [Member] | Construction Loans [Member]
Loans and leases	503,086	378,797
Commercial Real Estate Portfolio Segment [Member] | Internally Assigned Risk Rating [Member] | Other Non-owner Occupied Commercial Real Estate Loans [Member]
Loans and leases	1,010,375	913,610
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Owner Occupied Commercial Real Estate Loans [Member]
Loans and leases	478,852	439,418
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Construction Loans [Member]
Loans and leases	491,928	378,572
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Other Non-owner Occupied Commercial Real Estate Loans [Member]
Loans and leases	929,398	896,206
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Owner Occupied Commercial Real Estate Loans [Member]
Loans and leases	2,211	3,044
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Construction Loans [Member]
Loans and leases	680	41
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Other Non-owner Occupied Commercial Real Estate Loans [Member]
Loans and leases	51,149	3,905
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Owner Occupied Commercial Real Estate Loans [Member]
Loans and leases	5,191	1,527
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Construction Loans [Member]
Loans and leases	10,478	184
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Other Non-owner Occupied Commercial Real Estate Loans [Member]
Loans and leases	29,828	13,499
Commercial and Commercial Real Estate Portfolio Segments [Member] | Internally Assigned Risk Rating [Member]
Loans and leases	$ 3,660,677	$ 3,102,243
As a % of Total	100.00%	100.00%
Commercial and Commercial Real Estate Portfolio Segments [Member] | Pass [Member]
Loans and leases	$ 3,510,681	$ 3,048,642
As a % of Total	95.91%	98.27%
Commercial and Commercial Real Estate Portfolio Segments [Member] | Special Mention [Member]
Loans and leases	$ 79,587	$ 19,952
As a % of Total	2.17%	0.65%
Commercial and Commercial Real Estate Portfolio Segments [Member] | Substandard [Member]
Loans and leases	$ 70,409	$ 33,649
As a % of Total	1.92%	1.08%