Note 1 - Business (Details Textual)	Mar. 31, 2019
Number Of Limited Partnerships In Housing Investments	9
Percentage of Subsidiaries Common Securities Owned by Parent Company	100.00%
Southern California [Member]
Number Of Branch Locations	26
Northern California [Member]
Number Of Branch Locations	14
NEW YORK
Number Of Branch Locations	11
WASHINGTON
Number Of Branch Locations	4
ILLINOIS
Number Of Branch Locations	3
TEXAS
Number Of Branch Locations	2
NEW JERSEY
Number Of Branch Locations	1
HONG KONG
Number Of Branch Locations	1
MASSACHUSETTS
Number Of Branch Locations	1
MARYLAND
Number Of Branch Locations	1
NEVADA
Number Of Branch Locations	1