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 lincome (oss) from continuing operations including noncontrolling interest	$ (148,829)	$ 25,195	$ 76,633
Net income from discontinued operations, net of income taxes	829	11,539	4,998
Net income (loss)	(148,000)	36,734	81,631
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	72,127	98,258	103,582
Amortization of debt issuance costs and debt discount	20,364	13,277	14,238
Loss on exchange of 3.25% convertible notes due 2018			1,291
Gain on the disposal of assets, net	(3,680)	(150,351)	(2,535)
Write-off of deferred financing fees related to extinguishment of debt		13,178	9,460
Deferred income taxes	(17,252)	(24,484)	(81,077)
Stock-based compensation	9,692	11,420	12,161
Loss (income) from equity method investees, net of income taxes	(2,797)	596	274
Other		(11,604)	(7,842)
Changes in operating assets and liabilities before effects of business combinations and dispositions:
Accounts receivable	(21,762)	43,443	7,338
Inventories	50,022	26,972	(35,980)
Derivative financial instruments	12,420	(12,294)	(4,119)
Prepaid expenses and other assets	793	1,907	(644)
Accounts payable and accrued liabilities	(1,778)	(53,565)	(12,835)
Current income taxes	3,138	31,517	(41,087)
Other	(288)	4,526	2,772
Net cash provided by (used in) operating activities - continuing operations	(27,001)	29,530	46,628
Net cash provided by (used in) operating activities - discontinued operations	17,469	9,437	(228,791)
Net cash provided by (used in) operating activities	(9,532)	38,967	(182,163)
Cash flows from investing activities:
Purchases of property and equipment, net	(75,481)	(40,529)	(44,594)
Proceeds from sale of discontinued operations, net of cash divested	76,884
Proceeds from the sale of assets, net	3,469	671,650
Disposition of equity method investee	29,721
Distributions from (contribution to) equity method investees	220	(3,091)	(20,286)
Other investing activities		7,500
Net cash provided by (used in) investing activities - continuing operations	34,813	635,530	(64,880)
Net cash used in investing activities - discontinued operations	(4,169)	(128,065)	(63,600)
Net cash provided by (used in) investing activities	30,644	507,465	(128,480)
Cash flows from financing activities:
Proceeds from the issuance of long-term debt	157,710	83,100	570,600
Payments of principal on long-term debt	(45,702)	(576,389)	(510,209)
Proceeds from short-term borrowings	2,802,199	3,479,784	4,028,298
Payments on short-term borrowings	(2,840,505)	(3,578,629)	(4,001,359)
Cash payment for exchange of 3.25% convertible notes due 2018			(8,523)
Payments for repurchase of common stock	(61,646)	(2,978)	(6,724)
Payments of cash dividends and distributions	(31,686)	(41,265)	(39,383)
Payment penalty on early extinguishment of debt			(2,881)
Proceeds from disgorgement of shareholder short-swing profits	6,699
Payments of loan fees	(5,291)	(3,808)	(14,271)
Payments related to tax withholdings for stock-based compensation	(2,320)	(3,569)	(4,499)
Proceeds from exercises of stock options	1,595	150	50
Net cash provided by (used in) financing activities - continuing operations	(18,947)	(643,604)	11,099
Net cash provided by (used in) financing activities - discontinued operations	(50,464)	103,007	205,113
Net cash provided by (used in) financing activities	(69,411)	(540,597)	216,212
Net change in cash, cash equivalents and restricted cash	(48,299)	5,835	(94,431)
Cash, cash equivalents and restricted cash, beginning of period	283,284	289,667	406,029
Discontinued operations cash activity included above:
Add: Cash balance included in current assets of discontinued operations at beginning of period	34,911	22,693	762
Less: Cash balance included current assets of discontinued operationsat end of period		34,911	22,693
Cash, cash equivalents and restricted cash, end of period	269,896	283,284	289,667
Reconciliation of total cash, cash equivalents and restricted cash:
Cash and cash equivalents	245,977
Restricted cash	23,919
Discontinued operations cash activity included above:
Less: Cash, cash equivalents and restricted cash balance included in current assets of discontinued operations at end of period	34,911	22,693	22,693
Non-cash financing activity:
Settlement of NMTC transaction	8,100
Modification of 3.25% convertible notes due 2019, net		3,480
Exchange of 3.25% convertible notes due 2018 for shares of common stock			47,743
Exchange of common stock held in treasury stock for 3.25% convertible notes due 2018		1	27,356
Supplemental investing and financing activities:
Assets acquired in acquisitions and mergers, net of cash		124,525	63,670
Less: liabilities assumed		(118)	(1,943)
Net assets acquired		124,407	61,727
Assets disposed of in sale	527,614	550,648
Less: liabilities disposed	(373,846)	(41,276)
Net assets disposed	153,768	509,372
Supplemental disclosures of cash flow:
Cash paid (refunded) for income taxes	563	(22,478)	(3,768)
Cash paid for interest of continuing operations	24,287	60,664	48,298
Cash paid for interest of discontinued operations	$ 11,557	$ 12,481	$ 5,915