Consolidating Financial Information - Statements of Cash Flows (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	May 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Net cash (used in) provided by operating activities		$ 359,988	$ 349,440	$ 269,791
Cash flows from investing activities:
Capital expenditures, net of related payables		(162,377)	(129,925)	(102,748)
Business acquisition, net of cash received		(305,886)	0	0
Proceeds from asset sales		11,094	26,329	2,739
Repayment (issuance) of related party note receivable		18,330	500	(500)
Investment in joint ventures		0	(327)	(6,817)
Investment in subsidiaries		0	0	0
Distributions in excess of earnings from joint ventures		1,015	971	1,019
Distributions from subsidiaries		0	0	0
Proceeds from repayment of advances to subsidiaries, net		0	0	0
Loans to parent, net		0	0	0
Proceeds from repayment of Native American development costs		0	0	66,048
Native American development costs		(2,704)	(1,827)	(2,630)
Other, net		(3,568)	(1,994)	2
Net cash provided by (used in) investing activities		(444,096)	(106,273)	(42,887)
Cash flows from financing activities:
Borrowings under credit agreements with original maturity dates greater than three months		1,872,500	55,000	0
Payments under credit agreements with original maturities greater than three months		(1,517,547)	(82,684)	(71,129)
(Payments) borrowings under credit agreements with original maturities of three months or less, net		(53,900)	20,000	1,250
Capital contributions	$ 419,500	419,475	0	0
Distributions to members and noncontrolling interests		(153,900)	(222,228)	(163,413)
Deemed distributions		(389,149)	0	0
Payment of debt issuance costs		(39,815)	(797)	(2,454)
Payments on derivative instruments with other-than-insignificant financing elements		(10,831)	(8,947)	(10,980)
Loans from subsidiaries, net		0	0	0
Payments on advances from parent, net		0	0	0
Capital contributions from noncontrolling interests		0	0	9,969
Payments on other debt		(22,288)	(3,682)	(3,139)
Other, net		(7,101)	(6,522)	(1,772)
Net cash provided by (used in) financing activities		97,444	(249,860)	(241,668)
Cash and cash equivalents (including cash and cash equivalents of discontinued operations):
(Decrease) increase in cash and cash equivalents		13,336	(6,693)	(14,764)
Balance, beginning of year		116,623	123,316	138,080
Balance, end of year		129,959	116,623	123,316
Supplemental cash flow disclosures:
Cash paid for interest		116,314	122,103	129,090
Capital expenditures incurred but not yet paid		21,375	19,886	17,360
Parent [Member]
Net cash (used in) provided by operating activities		(135,900)	(113,117)	(118,162)
Cash flows from investing activities:
Capital expenditures, net of related payables		(16,747)	(25,655)	(32,614)
Business acquisition, net of cash received		(305,886)
Proceeds from asset sales		0	41	18
Repayment (issuance) of related party note receivable		0	0	0
Investment in joint ventures			0	0
Investment in subsidiaries		(80,680)	(129)	(5,778)
Distributions in excess of earnings from joint ventures		0	0	0
Distributions from subsidiaries		67,864	28,741	21,818
Proceeds from repayment of advances to subsidiaries, net		110,928	180,142	170,439
Loans to parent, net		0	0	0
Proceeds from repayment of Native American development costs				0
Native American development costs		0	0	0
Other, net		66	(874)	714
Net cash provided by (used in) investing activities		(224,455)	182,266	154,597
Cash flows from financing activities:
Borrowings under credit agreements with original maturity dates greater than three months		1,872,500	0
Payments under credit agreements with original maturities greater than three months		(1,516,738)	(77,277)	(66,922)
(Payments) borrowings under credit agreements with original maturities of three months or less, net		(20,000)	20,000	0
Capital contributions		419,475	0	0
Distributions to members and noncontrolling interests		(142,786)	(162,258)	(130,319)
Deemed distributions		(389,149)
Payment of debt issuance costs		(38,472)	0	(2,454)
Payments on derivative instruments with other-than-insignificant financing elements		(10,831)	(7,872)	(8,948)
Loans from subsidiaries, net		190,164	156,890	160,490
Payments on advances from parent, net		0	0	0
Capital contributions from noncontrolling interests				0
Payments on other debt		(2,149)	(2,028)	(1,910)
Other, net		(1,101)	(4,261)	0
Net cash provided by (used in) financing activities		360,913	(76,806)	(50,063)
Cash and cash equivalents (including cash and cash equivalents of discontinued operations):
(Decrease) increase in cash and cash equivalents		558	(7,657)	(13,628)
Balance, beginning of year		5,897	13,554	27,182
Balance, end of year		6,455	5,897	13,554
Supplemental cash flow disclosures:
Cash paid for interest		108,129	115,407	122,202
Capital expenditures incurred but not yet paid		1,190	5,685	2,063
Guarantor Subsidiaries [Member]
Net cash (used in) provided by operating activities		471,007	437,964	389,225
Cash flows from investing activities:
Capital expenditures, net of related payables		(144,721)	(103,422)	(66,970)
Business acquisition, net of cash received		0
Proceeds from asset sales		11,092	25,591	2,721
Repayment (issuance) of related party note receivable		18,330	500	(500)
Investment in joint ventures			(198)	(1,039)
Investment in subsidiaries		0	0	(13,531)
Distributions in excess of earnings from joint ventures		1,015	971	1,019
Distributions from subsidiaries		11,114	11,236	10,094
Proceeds from repayment of advances to subsidiaries, net		0	0	0
Loans to parent, net		(190,164)	(156,890)	(160,490)
Proceeds from repayment of Native American development costs				66,048
Native American development costs		(2,704)	(1,827)	(2,630)
Other, net		(3,147)	(1,093)	(762)
Net cash provided by (used in) investing activities		(299,185)	(225,132)	(166,040)
Cash flows from financing activities:
Borrowings under credit agreements with original maturity dates greater than three months		0	55,000
Payments under credit agreements with original maturities greater than three months		0	(2,250)	(3,000)
(Payments) borrowings under credit agreements with original maturities of three months or less, net		(33,900)	0	1,250
Capital contributions		80,202	0	0
Distributions to members and noncontrolling interests		(67,864)	(77,728)	(44,818)
Deemed distributions		0
Payment of debt issuance costs		0	(797)	0
Payments on derivative instruments with other-than-insignificant financing elements		0	(1,075)	(2,032)
Loans from subsidiaries, net		0	0	0
Payments on advances from parent, net		(110,928)	(180,142)	(170,439)
Capital contributions from noncontrolling interests				0
Payments on other debt		(20,139)	(1,654)	(1,228)
Other, net		(6,000)	(2,261)	(1,772)
Net cash provided by (used in) financing activities		(158,629)	(210,907)	(222,039)
Cash and cash equivalents (including cash and cash equivalents of discontinued operations):
(Decrease) increase in cash and cash equivalents		13,193	1,925	1,146
Balance, beginning of year		107,114	105,189	104,043
Balance, end of year		120,307	107,114	105,189
Supplemental cash flow disclosures:
Cash paid for interest		1,424	3,264	3,605
Capital expenditures incurred but not yet paid		20,081	14,067	15,040
Parent and Guarantor Eliminations [Member]
Net cash (used in) provided by operating activities		0	0	0
Cash flows from investing activities:
Capital expenditures, net of related payables		0	0	0
Business acquisition, net of cash received		0
Proceeds from asset sales		0	0	0
Repayment (issuance) of related party note receivable		0	0	0
Investment in joint ventures			0	0
Investment in subsidiaries		80,202	0	0
Distributions in excess of earnings from joint ventures		0	0	0
Distributions from subsidiaries		(67,864)	(28,741)	(21,818)
Proceeds from repayment of advances to subsidiaries, net		(110,928)	(180,142)	(170,439)
Loans to parent, net		190,164	156,890	160,490
Proceeds from repayment of Native American development costs				0
Native American development costs		0	0	0
Other, net		0	0	0
Net cash provided by (used in) investing activities		91,574	(51,993)	(31,767)
Cash flows from financing activities:
Borrowings under credit agreements with original maturity dates greater than three months		0	0
Payments under credit agreements with original maturities greater than three months		0	0	0
(Payments) borrowings under credit agreements with original maturities of three months or less, net		0	0	0
Capital contributions		(80,202)	0	0
Distributions to members and noncontrolling interests		67,864	28,741	21,818
Deemed distributions		0
Payment of debt issuance costs		0	0	0
Payments on derivative instruments with other-than-insignificant financing elements		0	0	0
Loans from subsidiaries, net		(190,164)	(156,890)	(160,490)
Payments on advances from parent, net		110,928	180,142	170,439
Capital contributions from noncontrolling interests				0
Payments on other debt		0	0	0
Other, net		0	0	0
Net cash provided by (used in) financing activities		(91,574)	51,993	31,767
Cash and cash equivalents (including cash and cash equivalents of discontinued operations):
(Decrease) increase in cash and cash equivalents		0	0	0
Balance, beginning of year		0	0	0
Balance, end of year		0	0	0
Supplemental cash flow disclosures:
Cash paid for interest		0	0	0
Capital expenditures incurred but not yet paid		0	0	0
Parent and Guarantor Subsidiaries [Member]
Net cash (used in) provided by operating activities		335,107	324,847	271,063
Cash flows from investing activities:
Capital expenditures, net of related payables		(161,468)	(129,077)	(99,584)
Business acquisition, net of cash received		(305,886)
Proceeds from asset sales		11,092	25,632	2,739
Repayment (issuance) of related party note receivable		18,330	500	(500)
Investment in joint ventures			(198)	(1,039)
Investment in subsidiaries		(478)	(129)	(19,309)
Distributions in excess of earnings from joint ventures		1,015	971	1,019
Distributions from subsidiaries		11,114	11,236	10,094
Proceeds from repayment of advances to subsidiaries, net		0	0	0
Loans to parent, net		0	0	0
Proceeds from repayment of Native American development costs				66,048
Native American development costs		(2,704)	(1,827)	(2,630)
Other, net		(3,081)	(1,967)	(48)
Net cash provided by (used in) investing activities		(432,066)	(94,859)	(43,210)
Cash flows from financing activities:
Borrowings under credit agreements with original maturity dates greater than three months		1,872,500	55,000
Payments under credit agreements with original maturities greater than three months		(1,516,738)	(79,527)	(69,922)
(Payments) borrowings under credit agreements with original maturities of three months or less, net		(53,900)	20,000	1,250
Capital contributions		419,475	0	0
Distributions to members and noncontrolling interests		(142,786)	(211,245)	(153,319)
Deemed distributions		(389,149)
Payment of debt issuance costs		(38,472)	(797)	(2,454)
Payments on derivative instruments with other-than-insignificant financing elements		(10,831)	(8,947)	(10,980)
Loans from subsidiaries, net		0	0	0
Payments on advances from parent, net		0	0	0
Capital contributions from noncontrolling interests				0
Payments on other debt		(22,288)	(3,682)	(3,138)
Other, net		(7,101)	(6,522)	(1,772)
Net cash provided by (used in) financing activities		110,710	(235,720)	(240,335)
Cash and cash equivalents (including cash and cash equivalents of discontinued operations):
(Decrease) increase in cash and cash equivalents		13,751	(5,732)	(12,482)
Balance, beginning of year		113,011	118,743	131,225
Balance, end of year		126,762	113,011	118,743
Supplemental cash flow disclosures:
Cash paid for interest		109,553	118,671	125,807
Capital expenditures incurred but not yet paid		21,271	19,752	17,103
Non-Guarantor Subsidiaries [Member]
Net cash (used in) provided by operating activities		24,881	24,593	(1,272)
Cash flows from investing activities:
Capital expenditures, net of related payables		(909)	(848)	(3,164)
Business acquisition, net of cash received		0
Proceeds from asset sales		2	697	0
Repayment (issuance) of related party note receivable		0	0	0
Investment in joint ventures			(129)	(5,778)
Investment in subsidiaries		0	0	0
Distributions in excess of earnings from joint ventures		0	0	0
Distributions from subsidiaries		0	0	0
Proceeds from repayment of advances to subsidiaries, net		0	0	0
Loans to parent, net		0	0	0
Proceeds from repayment of Native American development costs				0
Native American development costs		0	0	0
Other, net		(487)	(27)	50
Net cash provided by (used in) investing activities		(1,394)	(307)	(8,892)
Cash flows from financing activities:
Borrowings under credit agreements with original maturity dates greater than three months		0	0
Payments under credit agreements with original maturities greater than three months		(809)	(3,157)	(1,207)
(Payments) borrowings under credit agreements with original maturities of three months or less, net		0	0	0
Capital contributions		478	129	19,309
Distributions to members and noncontrolling interests		(22,228)	(22,219)	(20,188)
Deemed distributions		0
Payment of debt issuance costs		(1,343)	0	0
Payments on derivative instruments with other-than-insignificant financing elements		0	0	0
Loans from subsidiaries, net		0	0	0
Payments on advances from parent, net		0	0	0
Capital contributions from noncontrolling interests				9,969
Payments on other debt		0	0	(1)
Other, net		0	0	0
Net cash provided by (used in) financing activities		(23,902)	(25,247)	7,882
Cash and cash equivalents (including cash and cash equivalents of discontinued operations):
(Decrease) increase in cash and cash equivalents		(415)	(961)	(2,282)
Balance, beginning of year		3,612	4,573	6,855
Balance, end of year		3,197	3,612	4,573
Supplemental cash flow disclosures:
Cash paid for interest		6,761	3,432	3,283
Capital expenditures incurred but not yet paid		104	134	257
Consolidation, Eliminations [Member]
Net cash (used in) provided by operating activities		0	0	0
Cash flows from investing activities:
Capital expenditures, net of related payables		0	0	0
Business acquisition, net of cash received		0
Proceeds from asset sales		0	0	0
Repayment (issuance) of related party note receivable		0	0	0
Investment in joint ventures			0	0
Investment in subsidiaries		478	129	19,309
Distributions in excess of earnings from joint ventures		0	0	0
Distributions from subsidiaries		(11,114)	(11,236)	(10,094)
Proceeds from repayment of advances to subsidiaries, net		0	0	0
Loans to parent, net		0	0	0
Proceeds from repayment of Native American development costs				0
Native American development costs		0	0	0
Other, net		0	0	0
Net cash provided by (used in) investing activities		(10,636)	(11,107)	9,215
Cash flows from financing activities:
Borrowings under credit agreements with original maturity dates greater than three months		0	0
Payments under credit agreements with original maturities greater than three months		0	0	0
(Payments) borrowings under credit agreements with original maturities of three months or less, net		0	0	0
Capital contributions		(478)	(129)	(19,309)
Distributions to members and noncontrolling interests		11,114	11,236	10,094
Deemed distributions		0
Payment of debt issuance costs		0	0	0
Payments on derivative instruments with other-than-insignificant financing elements		0	0	0
Loans from subsidiaries, net		0	0	0
Payments on advances from parent, net		0	0	0
Capital contributions from noncontrolling interests				0
Payments on other debt		0	0	0
Other, net		0	0	0
Net cash provided by (used in) financing activities		10,636	11,107	(9,215)
Cash and cash equivalents (including cash and cash equivalents of discontinued operations):
(Decrease) increase in cash and cash equivalents		0	0	0
Balance, beginning of year		0	0	0
Balance, end of year		0	0	0
Supplemental cash flow disclosures:
Cash paid for interest		0	0	0
Capital expenditures incurred but not yet paid		$ 0	$ 0	$ 0