Note 1 - Business (Details)	Mar. 31, 2016
Note 1 - Business (Details) [Line Items]
Number of Limited Partnerships in Housing Investments	6
Percentage of Subsidiaries Common Securities Owned by Parent Company	100.00%
Number of Business Trust	5
Southern California [Member]
Note 1 - Business (Details) [Line Items]
Number of Branch Locations	21
Northern California Member
Note 1 - Business (Details) [Line Items]
Number of Branch Locations	12
NEW YORK
Note 1 - Business (Details) [Line Items]
Number of Branch Locations	12
ILLINOIS
Note 1 - Business (Details) [Line Items]
Number of Branch Locations	3
WASHINGTON
Note 1 - Business (Details) [Line Items]
Number of Branch Locations	3
TEXAS
Note 1 - Business (Details) [Line Items]
Number of Branch Locations	2
MASSACHUSETTS
Note 1 - Business (Details) [Line Items]
Number of Branch Locations	1
NEW JERSEY
Note 1 - Business (Details) [Line Items]
Number of Branch Locations	1
MARYLAND
Note 1 - Business (Details) [Line Items]
Number of Branch Locations	1
NEVADA
Note 1 - Business (Details) [Line Items]
Number of Branch Locations	1
HONG KONG
Note 1 - Business (Details) [Line Items]
Number of Branch Locations	1