Note 6 - Leases (Details Textual)	3 Months Ended		12 Months Ended
	Dec. 31, 2025 USD ($)	Jun. 30, 2025 USD ($)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)
Operating Lease, Right-of-Use Asset	$ 15,596,000		$ 15,596,000	$ 17,001,000
Operating Lease, Liability	16,439,000		16,439,000	17,535,000
Lease, Cost			2,700,000	2,300,000
Increase (Decrease) in Right of Use Asset			(1,405,000)	10,954,000
Increase (Decrease) in Operating Lease Liability			$ (1,096,000)	$ 11,107,000
Terminated Leases [Member]
Increase (Decrease) in Right of Use Asset		$ 1,900,000
Increase (Decrease) in Operating Lease Liability		1,900,000
Seattle Business Center [Member]
Increase (Decrease) in Right of Use Asset		1,300,000
Increase (Decrease) in Operating Lease Liability		$ 1,300,000
Bellevue Washington Branch [Member]
Increase (Decrease) in Right of Use Asset	185,000
Increase (Decrease) in Operating Lease Liability	$ 185,000
Minimum [Member]
Lessee Leasing Arrangements, Operating Leases, Number of Units	1		1
Lessee, Operating Lease, Renewal Term (Year)	2 years		2 years
Maximum [Member]
Lessee, Operating Lease, Term of Contract (Year)	20 years		20 years
Lessee, Operating Lease, Renewal Term (Year)	10 years		10 years
Building [Member]
Lessee Leasing Arrangements, Operating Leases, Number of Units	15		15
Building Branch Office [Member]
Lessee Leasing Arrangements, Operating Leases, Number of Units	11		11
Building Business Centers [Member]
Lessee Leasing Arrangements, Operating Leases, Number of Units	3		3