Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Statement of Cash Flows [Abstract]
Net cash provided by operating activities	$ 53,995	$ 5,190
Cash flows from investing activities:
Sale of investment securities	49,296	43,115
Purchase of investment securities	(110,419)	(90,368)
Proceeds from sale or liquidation of long-term investments	549	75
Purchase of long-term investments	(7,000)	(5,000)
Investments in non-consolidated real estate businesses	(12,534)	(19,048)
Investments in consolidated real estate businesses	0	(7,657)
Distributions from non-consolidated real estate businesses	3,539	0
Increase in cash surrender value of life insurance policies	(395)	(303)
Increase in restricted assets	(371)	(1,268)
Issuance of notes receivable	(250)	0
Proceeds from sale of fixed assets	4	13
Capital expenditures	(10,144)	(5,995)
Repayments of notes receivable	933	8,433
Purchase of subsidiaries	(250)	0
Net cash used in investing activities	(87,042)	(78,003)
Cash flows from financing activities:
Proceeds from debt issuance	413,916	453,080
Deferred financing costs	(12,360)	(11,663)
Repayments of debt	(8,051)	(418,833)
Borrowings under revolver	429,188	474,493
Repayments on revolver	(437,736)	(476,888)
Dividends and distributions on common stock	(80,963)	(71,518)
Distributions to non-controlling interest	(3,075)	0
Proceeds from exercise of Vector options	3,405	0
Tax benefit of options exercised	680	0
Net cash provided by (used in) financing activities	305,004	(51,329)
Net increase (decrease) in cash and cash equivalents	271,957	(124,142)
Cash and cash equivalents, beginning of period	234,466	405,855
Cash and cash equivalents, end of period	$ 506,423	$ 281,713