Consolidated Statements Of Cash Flow (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash flows from operating activities:
Net income (loss)	$ 747	$ (20,055)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	9,950	6,939
Stock-based compensation	8,383	3,845
Equity in loss of unconsolidated joint ventures	40	429
Deferred income tax (benefit)	2,658	(11,265)
Impairment losses	2,479	555
Pension charges	1,713
Cost of operating properties sold	4,287	1,693
Expenditures for operating properties	(9,906)	(5,698)
Changes in operating assets and liabilities:
Notes receivable	1,174	628
Other assets	(767)	(1,642)
Accounts payable and accrued liabilities	8,448	531
Income taxes payable	(2,484)	(5,399)
Net cash provided by (used in) operating activities	26,722	(29,439)
Cash flows from investing activities:
Purchases of property, plant and equipment	(1,556)	(287)
Proceeds from the disposition of assets		42
Contribution of capital to unconsolidated affiliates	(4,434)
Distributions from unconsolidated affiliates		391
Net cash (used in) provided by investing activities	(5,990)	146
Cash flows from financing activities:
Proceeds from exercises of stock options	100	5,083
Repayments of other long-term debt	(166)
Distributions to minority interest partner	(9)
Excess tax benefits from stock-based compensation	53	60
Taxes paid on behalf of employees related to stock-based compensation	(4,708)	(795)
Net cash (used in) provided by financing activities	(4,730)	4,348
Net increase (decrease) in cash and cash equivalents	16,002	(24,945)
Cash and cash equivalents at beginning of period	183,827	163,807
Cash and cash equivalents at end of period	$ 199,829	$ 138,862