Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Statement of Cash Flows [Abstract]
Net cash provided by operating activities	$ 5,190	$ 57,829
Cash flows from investing activities:
Sale of investment securities	43,115	0
Purchase of investment securities	(90,368)	(1,148)
Proceeds from sale or liquidation of long-term investments	75	72
Purchase of long-term investments	(5,000)	(5,000)
Investments in non-consolidated real estate businesses	(19,048)	(9,667)
Investments in consolidated real estate businesses	(7,657)	0
Distributions from non-consolidated real estate businesses	0	6,221
Increase in cash surrender value of life insurance policies	(303)	(620)
Increase in restricted assets	(1,268)	(53)
Issuance of notes receivable	0	(234)
Proceeds from sale of fixed assets	13	404
Capital expenditures	(5,995)	(7,394)
Repayments of notes receivable	8,433	0
Net cash used in investing activities	(78,003)	(17,419)
Cash flows from financing activities:
Proceeds from debt issuance	453,080	14,018
Deferred financing costs	(11,663)	(315)
Repayments of debt	(418,833)	(13,493)
Borrowings under revolver	474,493	525,350
Repayments on revolver	(476,888)	(532,082)
Dividends and distributions on common stock	(71,518)	(66,112)
Proceeds from exercise of employee stock options	0	45
Tax benefit of employee stock options exercised	0	4
Net cash used in financing activities	(51,329)	(72,585)
Net decrease in cash and cash equivalents	(124,142)	(32,175)
Cash and cash equivalents, beginning of period	405,855	240,923
Cash and cash equivalents, end of period	$ 281,713	$ 208,748