Note 4 - Loans Leases Receivable - Loans by Internally Assigned Risk Rating (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Loans and leases	$ 4,680,132	$ 4,243,791
C&I - revolving
Loans and leases	248,483
C&I - other
2021	3,580
2020	373
2019	349
2017	336
Loans and leases	4,640
Internally Assigned Risk Rating [Member]
2021	1,418,701
2020	1,151,208
2019	514,237
2018	354,369
2017	180,072
Prior	148,546
Revolving Loans Amortized Cost Basis	289,503
Loans and leases	4,056,636		$ 3,102,243
As a % of Total			100.00%
Internally Assigned Risk Rating [Member] | C&I - revolving
Revolving Loans Amortized Cost Basis	248,483
Loans and leases	248,483
Internally Assigned Risk Rating [Member] | C&I - other
2021	395,618
2020	364,995
2019	141,165
2018	82,573
2017	83,810
Prior	53,358
Loans and leases	1,121,519
Internally Assigned Risk Rating [Member] | Owner Occupied Commercial Real Estate Loans [Member]
2021	118,651
2020	143,045
2019	49,740
2018	31,995
2017	19,406
Prior	47,387
Revolving Loans Amortized Cost Basis	11,477
Loans and leases	421,701
Internally Assigned Risk Rating [Member] | CRE - non owner occupied
2021	185,213
2020	172,890
2019	106,062
2018	77,166
2017	62,189
Prior	34,388
Revolving Loans Amortized Cost Basis	8,592
Loans and leases	646,500
Internally Assigned Risk Rating [Member] | Construction Loans [Member]
2021	1,558
2020	487
2019	108
2018	353
Prior	824
Revolving Loans Amortized Cost Basis	2,031
Loans and leases	5,361
Pass [Member]
Loans and leases			$ 3,048,642
As a % of Total			98.28%
Pass [Member] | C&I - other
2021	391,532
2020	362,256
2019	133,678
2018	82,177
2017	83,419
Prior	53,310
Loans and leases	1,106,372
Pass [Member] | Owner Occupied Commercial Real Estate Loans [Member]
2021	118,014
2020	143,045
2019	47,660
2018	30,523
2017	17,038
Prior	46,185
Revolving Loans Amortized Cost Basis	11,477
Loans and leases	413,942
Pass [Member] | CRE - non owner occupied
2021	176,813
2020	145,712
2019	88,697
2018	63,849
2017	55,752
Prior	28,808
Revolving Loans Amortized Cost Basis	8,592
Loans and leases	568,223
Pass [Member] | Construction Loans [Member]
2021	1,558
2020	487
2019	108
2018	216
Prior	824
Revolving Loans Amortized Cost Basis	2,031
Loans and leases	5,224
Special Mention [Member]
Loans and leases			$ 19,952
As a % of Total			0.64%
Special Mention [Member] | C&I - revolving
Revolving Loans Amortized Cost Basis	633
Loans and leases	633
Special Mention [Member] | C&I - other
Prior	2
Special Mention [Member] | Owner Occupied Commercial Real Estate Loans [Member]
2021	637
2018	233
2017	1,846
Prior	1,202
Loans and leases	3,918
Special Mention [Member] | CRE - non owner occupied
2021	7,295
2020	20,881
2019	1,802
2018	12,230
2017	5,494
Prior	5,580
Loans and leases	53,282
Substandard [Member]
Loans and leases			$ 33,649
As a % of Total			1.08%
Substandard [Member] | C&I - revolving
Revolving Loans Amortized Cost Basis	2,638
Loans and leases	2,638
Substandard [Member] | C&I - other
2021	506
2020	2,366
2019	7,138
2018	396
2017	55
Prior	46
Loans and leases	10,507
Substandard [Member] | Owner Occupied Commercial Real Estate Loans [Member]
2019	2,080
2018	1,239
2017	522
Loans and leases	3,841
Substandard [Member] | CRE - non owner occupied
2021	1,105
2020	6,297
2019	15,563
2018	1,087
2017	943
Loans and leases	24,995
Substandard [Member] | Construction Loans [Member]
2018	137
Loans and leases	137
Commercial Portfolio Segment [Member]
Loans and leases	1,595,085	1,726,723
Commercial Portfolio Segment [Member] | C&I - revolving
Loans and leases	248,483	1,726,723
Commercial Portfolio Segment [Member] | C&I - other
Loans and leases	1,346,602
Commercial Portfolio Segment [Member] | Construction Loans [Member]
Loans and leases	918,571	541,455
Commercial Portfolio Segment [Member] | Internally Assigned Risk Rating [Member]
Loans and leases		1,555,217	$ 1,365,847
Commercial Portfolio Segment [Member] | Pass [Member]
Loans and leases		1,506,578	1,334,446
Commercial Portfolio Segment [Member] | Pass [Member] | C&I - revolving
Revolving Loans Amortized Cost Basis	245,212
Loans and leases	245,212
Commercial Portfolio Segment [Member] | Special Mention [Member]
Loans and leases		23,929	12,962
Commercial Portfolio Segment [Member] | Substandard [Member]
Loans and leases		24,710	18,439
Commercial Real Estate Portfolio Segment [Member]
Loans and leases		2,107,629
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Commercial Real Estate Loans [Member]
Loans and leases	421,701	496,471
Commercial Real Estate Portfolio Segment [Member] | CRE - non owner occupied
Loans and leases	646,500
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Loans and leases		541,455
Commercial Real Estate Portfolio Segment [Member] | Other Non-owner Occupied Commercial Real Estate Loans [Member]
Loans and leases		1,069,703
Commercial Real Estate Portfolio Segment [Member] | Internally Assigned Risk Rating [Member] | Owner Occupied Commercial Real Estate Loans [Member]
Loans and leases		496,471	443,989
Commercial Real Estate Portfolio Segment [Member] | Internally Assigned Risk Rating [Member] | Construction Loans [Member]
Loans and leases		541,455
Commercial Real Estate Portfolio Segment [Member] | Internally Assigned Risk Rating [Member] | Other Non-owner Occupied Commercial Real Estate Loans [Member]
Loans and leases		1,069,703	913,610
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Owner Occupied Commercial Real Estate Loans [Member]
Loans and leases		488,478	439,418
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Construction Loans [Member]
Loans and leases		530,297
Commercial Real Estate Portfolio Segment [Member] | Pass [Member] | Other Non-owner Occupied Commercial Real Estate Loans [Member]
Loans and leases		999,931	896,206
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Owner Occupied Commercial Real Estate Loans [Member]
Loans and leases		3,087	3,044
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Construction Loans [Member]
Loans and leases		680
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] | Other Non-owner Occupied Commercial Real Estate Loans [Member]
Loans and leases		43,785	3,905
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Owner Occupied Commercial Real Estate Loans [Member]
Loans and leases		4,906	1,527
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Construction Loans [Member]
Loans and leases		10,478
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] | Other Non-owner Occupied Commercial Real Estate Loans [Member]
Loans and leases		25,987	13,499
Construction and Land Development [Member] | Construction Loans [Member]
Loans and leases	918,571
Construction and Land Development [Member] | Internally Assigned Risk Rating [Member]
2021	404,407
2020	248,360
2019	126,941
2018	106,790
2017	3,012
Revolving Loans Amortized Cost Basis	13,277
Loans and leases	902,787		378,797
Construction and Land Development [Member] | Pass [Member]
2021	394,045
2020	248,360
2019	126,941
2018	106,790
2017	3,012
Revolving Loans Amortized Cost Basis	13,277
Loans and leases	892,425		378,572
Construction and Land Development [Member] | Special Mention [Member]
Loans and leases			41
Construction and Land Development [Member] | Substandard [Member]
2021	10,362
Loans and leases	10,362		$ 184
Multi-family
Loans and leases	600,412
Multi-family | Internally Assigned Risk Rating [Member]
2021	266,120
2020	197,224
2019	74,033
2018	47,486
2017	5,609
Prior	7,376
Revolving Loans Amortized Cost Basis	2,564
Loans and leases	600,412
Multi-family | Pass [Member]
2021	266,120
2020	197,224
2019	74,033
2018	47,486
2017	5,609
Prior	7,376
Revolving Loans Amortized Cost Basis	2,564
Loans and leases	600,412
1-4 family real estate
Loans and leases	377,361
1-4 family real estate | Internally Assigned Risk Rating [Member]
2021	47,134
2020	24,207
2019	16,188
2018	8,006
2017	6,046
Prior	5,213
Revolving Loans Amortized Cost Basis	3,079
Loans and leases	109,873
1-4 family real estate | Pass [Member]
2021	47,097
2020	24,029
2019	16,188
2018	7,569
2017	5,845
Prior	5,213
Revolving Loans Amortized Cost Basis	3,079
Loans and leases	109,020
1-4 family real estate | Special Mention [Member]
2021	37
Loans and leases	37
1-4 family real estate | Substandard [Member]
2020	178
2018	437
2017	201
Loans and leases	$ 816
Commercial and Commercial Real Estate Portfolio Segments [Member] | Internally Assigned Risk Rating [Member]
Loans and leases		$ 3,662,846
As a % of Total		100.00%
Commercial and Commercial Real Estate Portfolio Segments [Member] | Pass [Member]
Loans and leases		$ 3,525,284
As a % of Total		96.25%
Commercial and Commercial Real Estate Portfolio Segments [Member] | Special Mention [Member]
Loans and leases		$ 71,481
As a % of Total		1.95%
Commercial and Commercial Real Estate Portfolio Segments [Member] | Substandard [Member]
Loans and leases		$ 66,081
As a % of Total		1.80%