Note 4 - Loans Receivable - PPP Activity (Details) $ in Thousands	3 Months Ended
Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)
Loans receivable	$ 1,061,377		$ 1,050,638
SBA CARES Act Paycheck Protection Program [Member]
Number of loans originated	0	193
Loan balance originations	$ 0	$ 8,624
Loan balance forgiven	$ 2,359	$ 7,902
Number of loans	40		76
Loans receivable	$ 1,684		$ 4,043

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant