Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net income	$ 101,015	$ 58,007	$ 90,750
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	17,851	18,807	18,614
Non-cash stock-based expense	9,469	9,951	10,887
Loss on extinguishment of debt	2,944	3,758	1,754
Loss (gain) on sale of assets	(42)	10	(40)
Deferred income taxes	(11,198)	(17,635)	(33,311)
Distributions from long-term investments	17,940	1,472	1,436
Equity in (earnings) losses from long-term investments	(17,000)	(3,158)	765
Net (gains) losses on investment securities	(7,440)	9,570	660
Equity in losses (earnings) from real estate ventures	19,288	(14,446)	(21,395)
Distributions from real estate ventures	7,028	25,935	37,995
Non-cash interest expense	2,052	52,048	29,620
Non-cash lease expense	21,088	0	0
Excess tax benefit of stock compensation	1,488	18,412	1,143
Impairment of long-term investments	0	0	50
Changes in assets and liabilities:
Receivables	(7,950)	(13,372)	(17,492)
Inventories	(7,767)	(1,207)	43
Accounts payable and accrued liabilities	(3,983)	4,443	14,218
Payments due under the Master Settlement Agreement	(1,553)	19,081	(4,679)
Other assets and liabilities, net	(19,159)	10,158	568
Net cash provided by operating activities	124,071	181,834	131,586
Cash flows from investing activities:
Sale of investment securities	21,879	18,628	28,761
Maturities of investment securities	68,859	24,719	101,097
Purchase of investment securities	(87,766)	(34,445)	(132,654)
Proceeds from sale or liquidation of long-term investments	8,256	19,487	966
Purchase of long-term investments	(9,223)	(415)	(32,510)
Decrease in restricted assets	994	526	2,250
Investments in real estate ventures	(52,529)	(9,728)	(38,807)
Distributions from investments in real estate ventures	41,300	54,233	61,718
Issuance of notes receivable	0	(450)	(1,633)
Cash acquired in purchase of subsidiaries	0	654	0
Proceeds from sale of fixed assets	17	9	76
Capital expenditures	(12,575)	(17,682)	(19,869)
Increase in cash surrender value of life insurance policies	(719)	(764)	(802)
Purchase of subsidiaries	(380)	(10,404)	(6,569)
Repayments of notes receivable	0	67	0
Pay downs of investment securities	1,083	1,611	2,633
Investments in real estate, net	(2,295)	(2,583)	(619)
Net cash (used in) provided by investing activities	(23,099)	43,463	(35,962)
Cash flows from financing activities:
Proceeds from issuance of debt	230,000	325,000	850,021
Repayments of debt	(293,419)	(28,689)	(837,205)
Deferred financing costs	(9,802)	(9,400)	(19,200)
Borrowings under revolver	243,688	307,023	157,630
Repayments on revolver	(239,526)	(310,551)	(163,474)
Dividends and distributions on common stock	(238,249)	(225,367)	(211,488)
Distributions to non-controlling interest	(286)	(2,521)	(2,779)
Proceeds from the issuance of Vector stock	0	0	43,230
Tax withholdings related to net share settlements of stock option exercise	(5,415)	0	0
Other	(216)	0	0
Net cash (used in) provided by financing activities	(313,225)	55,495	(183,265)
Net (decrease) increase in cash, cash equivalents and restricted cash	(212,253)	280,792	(87,641)
Cash, cash equivalents and restricted cash, beginning of year	591,729	310,937	398,578
Cash and cash equivalents and restricted cash, end of year	$ 379,476	$ 591,729	$ 310,937