CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
ASSETS
Investment in real estate	$ 370,935	$ 370,647
Cash and cash equivalents	168,652	165,980
Notes receivable, net	5,131	3,975
Pledged treasury securities	26,676	26,818
Prepaid pension asset	33,374	33,356
Property and equipment, net of accumulated depreciation of $37.6 million	12,121	12,149
Deferred tax asset	11,957	11,957
Other assets	22,475	20,639
Total assets	651,321	645,521
LIABILITIES:
Debt	35,752	36,062
Accounts payable and accrued liabilities	47,345	42,352
Accounts payable	17,590	14,773
Accrued liabilities and deferred credits	47,345	42,352
Total liabilities	100,687	93,187
EQUITY:
Common stock, no par value; 180,000,000 shares authorized; 92,302,299 issued at March 31, 2013 and December 31, 2012; 92,282,030 and 92,285,408 outstanding at March 31, 2013 and December 31, 2012, respectively	891,793	891,798
Retained deficit	(333,335)	(330,861)
Accumulated other comprehensive loss	(8,555)	(8,652)
Treasury stock at cost, 20,269 and 16,891 shares held at March 31, 2013 and December 31, 2012, respectively	(285)	(260)
Total stockholders' equity	549,618	552,025
Noncontrolling interest	1,016	309
Total equity	550,634	552,334
Total liabilities and equity	651,321	645,521
Variable Interest Entities
ASSETS
Investment in real estate	4,922
Cash and cash equivalents	2,229	2,107
Other assets	143	166
Total assets	7,294	2,273
LIABILITIES:
Accounts payable and accrued liabilities	1,654	1,073
Total liabilities	$ 1,654	$ 1,073