Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Statement of Cash Flows [Abstract]
Net cash provided by operating activities	$ 341,329	$ 98,102
Cash flows from investing activities:
Sale of investment securities	19,555	12,942
Maturities of investment securities	31,574	28,610
Purchase of investment securities	(16,867)	(44,222)
Proceeds from sale or liquidation of long-term investments	23,407	0
Purchase of long-term investments	(5,238)	0
Investments in real estate ventures	(3,858)	(21,908)
Distributions from investments in real estate ventures	5,172	23,200
Increase in cash surrender value of life insurance policies	(751)	(789)
Decrease in restricted assets	87	668
Proceeds from sale of fixed assets	0	8
Capital expenditures	(6,242)	(6,320)
Purchase of subsidiaries	0	(668)
Pay downs of investment securities	415	545
Investments in real estate, net	(679)	(1,153)
Net cash provided by (used in) investing activities	46,575	(9,087)
Cash flows from financing activities:
Proceeds from issuance of debt	531	0
Deferred financing costs	0	(33)
Repayments of debt	(172,467)	(230,771)
Borrowings under revolver	130,641	172,224
Repayments on revolver	(165,593)	(169,727)
Dividends and distributions on common stock	(63,478)	(118,748)
Distributions to non-controlling interest	(448)	(285)
Proceeds from issuance of Vector common stock	52,563	0
Other	5	0
Net cash used in financing activities	(218,246)	(347,340)
Net increase (decrease) in cash, cash equivalents and restricted cash	169,658	(258,325)
Cash, cash equivalents and restricted cash, beginning of period	379,476	591,729
Cash, cash equivalents and restricted cash, end of period	$ 549,134	$ 333,404