Note 9 - Variable Interest Entities ("VIE") - Summary of Restricted Assets and VIE Liabilities (Details) $ in Thousands	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Number of consolidated VIEs	23	24
Real estate, net	$ 228,900	$ 229,200
Cash and cash equivalents	9,200	4,400
Accounts and notes receivable, net	3,800	2,100
Other assets	3,600	3,300
Total Restricted Assets	245,489	239,012
VIE Liabilities:
Mortgages and construction loan payable, net	104,500	83,800
Other liabilities	48,900	59,400
Total VIE Liabilities	$ 153,436	$ 143,186
Variable Interest Entity, Unencumbered [Member]
Number of consolidated VIEs	19	20
Variable Interest Entity, Encumbered by Third Party Non-resource Mortgage Debt [Member]
Number of consolidated VIEs	4	4