Note 18 - Fair Value Measurements - Schedule of Hierarchy and Fair Value for Each Major Category of Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Fair Value, Recurring [Member]
Assets measured at fair value	$ 358,206	$ 368,525
Fair Value, Recurring [Member] | Interest Rate Lock Contracts [Member]
Assets measured at fair value	71	141
Fair Value, Recurring [Member] | Forward Mortgage Loan Sale Contracts [Member]
Assets measured at fair value		124
Fair Value, Recurring [Member] | US Government Agencies Debt Securities [Member]
Assets measured at fair value	4,991	5,610
Fair Value, Recurring [Member] | Small Business Administration Agency Securities [Member]
Assets measured at fair value	2,750	3,469
Fair Value, Recurring [Member] | Mortgage-Backed Securities, Issued by US Government Sponsored Enterprises [Member]
Assets measured at fair value	47,390	55,025
Fair Value, Recurring [Member] | Collateralized Mortgage Obligations [Member]
Assets measured at fair value	127,213	119,511
Fair Value, Recurring [Member] | Commercial Paper [Member]
Assets measured at fair value	128,473	129,926
Fair Value, Recurring [Member] | Corporate Debt Securities [Member]
Assets measured at fair value	38,244	42,205
Fair Value, Recurring [Member] | Municipal Securities [Member]
Assets measured at fair value	9,074	12,514
Fair Value, Nonrecurring [Member] | Other Real Estate Owned [Member]
Assets measured at fair value	293	293
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member]
Assets measured at fair value	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Interest Rate Lock Contracts [Member]
Assets measured at fair value	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Forward Mortgage Loan Sale Contracts [Member]
Assets measured at fair value		0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | US Government Agencies Debt Securities [Member]
Assets measured at fair value	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Small Business Administration Agency Securities [Member]
Assets measured at fair value	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Mortgage-Backed Securities, Issued by US Government Sponsored Enterprises [Member]
Assets measured at fair value	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Collateralized Mortgage Obligations [Member]
Assets measured at fair value	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Commercial Paper [Member]
Assets measured at fair value	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Corporate Debt Securities [Member]
Assets measured at fair value	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Municipal Securities [Member]
Assets measured at fair value	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Nonrecurring [Member] | Other Real Estate Owned [Member]
Assets measured at fair value	0	0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member]
Assets measured at fair value	358,135	368,260
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Interest Rate Lock Contracts [Member]
Assets measured at fair value	0	0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Forward Mortgage Loan Sale Contracts [Member]
Assets measured at fair value		0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | US Government Agencies Debt Securities [Member]
Assets measured at fair value	4,991	5,610
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Small Business Administration Agency Securities [Member]
Assets measured at fair value	2,750	3,469
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Mortgage-Backed Securities, Issued by US Government Sponsored Enterprises [Member]
Assets measured at fair value	47,390	55,025
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Collateralized Mortgage Obligations [Member]
Assets measured at fair value	127,213	119,511
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Commercial Paper [Member]
Assets measured at fair value	128,473	129,926
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Corporate Debt Securities [Member]
Assets measured at fair value	38,244	42,205
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Municipal Securities [Member]
Assets measured at fair value	9,074	12,514
Fair Value, Inputs, Level 2 [Member] | Fair Value, Nonrecurring [Member] | Other Real Estate Owned [Member]
Assets measured at fair value	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member]
Assets measured at fair value	71	265
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Interest Rate Lock Contracts [Member]
Assets measured at fair value	71	141
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Forward Mortgage Loan Sale Contracts [Member]
Assets measured at fair value		124
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | US Government Agencies Debt Securities [Member]
Assets measured at fair value	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Small Business Administration Agency Securities [Member]
Assets measured at fair value	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Mortgage-Backed Securities, Issued by US Government Sponsored Enterprises [Member]
Assets measured at fair value	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Collateralized Mortgage Obligations [Member]
Assets measured at fair value	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Commercial Paper [Member]
Assets measured at fair value	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Corporate Debt Securities [Member]
Assets measured at fair value	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Municipal Securities [Member]
Assets measured at fair value	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Nonrecurring [Member] | Other Real Estate Owned [Member]
Assets measured at fair value	$ 293	$ 293