Note 1 - Business (Details Textual)	Mar. 31, 2024
Number Of Limited Partnerships In Housing Investments	11
Percentage of Subsidiaries Common Securities Owned by Parent Company	100.00%
Southern California1 [Member]
Number Of Branch Locations	24
Northern California 1 [Member]
Number Of Branch Locations	19
NEW YORK
Number Of Branch Locations	9
WASHINGTON
Number Of Branch Locations	4
ILLINOIS
Number Of Branch Locations	2
TEXAS
Number Of Branch Locations	2
MARYLAND
Number Of Branch Locations	1
HONG KONG
Number Of Branch Locations	1
MASSACHUSETTS
Number Of Branch Locations	1
NEVADA
Number Of Branch Locations	1
NEW JERSEY
Number Of Branch Locations	1