Note 4 - Loans/Leases Receivable - Aging of the Loan Lease Portfolio (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Loan	$ 6,138,871	$ 4,680,132
Accruing Past Due 90 Days or More		1
Nonaccrual Loans/Leases	$ 8,765	$ 2,759
Accruing past due 90 days or more as a percentage of total loan/lease portfolio		0.00%
Nonaccrual Loans/Leases as a percentage of total loan/lease portfolio	0.14%	0.06%
Loans and leases as a percentage of total loan/lease portfolio	100.00%	100.00%
C&I - revolving
Loan	$ 296,869
Current
Loan	$ 6,120,819	$ 4,666,986
Current as a percentage of total loan/lease portfolio	99.71%	99.72%
Current \| C&I - revolving
Loan	$ 296,869
Financing Receivables, 30 to 59 Days Past Due [Member]
Loan	$ 7,585	$ 2,202
Past due as a percentage of total loan/lease portfolio	0.12%	0.05%
Financing Receivables, 60 to 89 Days Past Due [Member]
Loan	$ 1,697	$ 8,184
Past due as a percentage of total loan/lease portfolio	0.03%	0.17%
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Accruing Past Due 90 Days or More	$ 5
Accruing past due 90 days or more as a percentage of total loan/lease portfolio	0.00%
Commercial Portfolio Segment [Member]
Loan	$ 1,748,562	$ 1,595,085
Commercial Portfolio Segment [Member] \| C&I - revolving
Loan	296,869	248,483
Commercial Portfolio Segment [Member] \| C&I - other
Loan	1,451,693	1,346,602
Accruing Past Due 90 Days or More		1
Nonaccrual Loans/Leases	3,135	1,400
Commercial Portfolio Segment [Member] \| Construction Loans [Member]
Loan	1,192,061	918,571
Commercial Portfolio Segment [Member] \| Current \| C&I - revolving
Loan		248,483
Commercial Portfolio Segment [Member] \| Current \| C&I - other
Loan	1,442,629	1,337,034
Commercial Portfolio Segment [Member] \| Financing Receivables, 30 to 59 Days Past Due [Member] \| C&I - other
Loan	4,800	859
Commercial Portfolio Segment [Member] \| Financing Receivables, 60 to 89 Days Past Due [Member] \| C&I - other
Loan	1,124	7,308
Commercial Portfolio Segment [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| C&I - other
Accruing Past Due 90 Days or More	5
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied Commercial Real Estate Loans [Member]
Loan	629,367	421,701
Nonaccrual Loans/Leases	2,590
Commercial Real Estate Portfolio Segment [Member] \| CRE - non owner occupied
Loan	963,239	646,500
Nonaccrual Loans/Leases	374
Commercial Real Estate Portfolio Segment [Member] \| Current \| Owner Occupied Commercial Real Estate Loans [Member]
Loan	625,611	421,701
Commercial Real Estate Portfolio Segment [Member] \| Current \| CRE - non owner occupied
Loan	962,444	646,500
Commercial Real Estate Portfolio Segment [Member] \| Financing Receivables, 30 to 59 Days Past Due [Member] \| Owner Occupied Commercial Real Estate Loans [Member]
Loan	1,166
Commercial Real Estate Portfolio Segment [Member] \| Financing Receivables, 30 to 59 Days Past Due [Member] \| CRE - non owner occupied
Loan	421
Construction and Land Development [Member]
Loan	1,192,061
Construction and Land Development [Member] \| Construction Loans [Member]
Loan	1,192,061	918,571
Nonaccrual Loans/Leases	132	73
Construction and Land Development [Member] \| Current \| Construction Loans [Member]
Loan	1,191,929	918,498
Multi-family
Loan	963,803	600,412
Multi-family \| Current
Loan	963,803	600,412
Direct financing leases
Loan	31,889	45,191
Nonaccrual Loans/Leases	135	847
Direct financing leases \| Current
Loan	31,557	44,174
Direct financing leases \| Financing Receivables, 30 to 59 Days Past Due [Member]
Loan	141	10
Direct financing leases \| Financing Receivables, 60 to 89 Days Past Due [Member]
Loan	56	160
1-4 family real estate
Loan	499,529	377,361
Nonaccrual Loans/Leases	2,046	408
1-4 family real estate \| Current
Loan	495,936	374,912
1-4 family real estate \| Financing Receivables, 30 to 59 Days Past Due [Member]
Loan	1,030	1,325
1-4 family real estate \| Financing Receivables, 60 to 89 Days Past Due [Member]
Loan	517	716
Consumer
Loan	110,421	75,311
Nonaccrual Loans/Leases	353	31
Consumer \| Current
Loan	110,041	75,272
Consumer \| Financing Receivables, 30 to 59 Days Past Due [Member]
Loan	$ 27	$ 8

Reflects the percentage derived from dividing loans accruing past due 90 days or more by total loans.

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Reflects the percentage derived from dividing current loans by total loans.

+ References

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Reflects the percentage derived from dividing nonaccrual loans by total loans.

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Reflects the percentage derived from dividing past due loans by total loans.

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Amortized cost of financing receivable 90 days or more past due and still accruing. Excludes net investment in lease.

+ References

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Amortized cost of financing receivable on nonaccrual status. Excludes net investment in lease.

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- Definition

Reflects the percentage derived from dividing impaired loans on which interest has ceased to be accrued by total loans.

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Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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