Note 1 - Business (Details Textual)	Jun. 30, 2018
Number Of Limited Partnerships In Housing Investments	8
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 [Member]
Number Of Branch Locations	12
Illinois [Member]
Number Of Branch Locations	3
WASHINGTON Member
Number Of Branch Locations	3
Texas [Member]
Number Of Branch Locations	2
Massachusetts [Member]
Number Of Branch Locations	1
HONG KONG
Number Of Branch Locations	1
New Jersey [Member]
Number Of Branch Locations	1
Maryland [Member]
Number Of Branch Locations	1
Nevada [Member]
Number Of Branch Locations	1