Supplemental Guarantor Financial Information - Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Assets
Cash and cash equivalents	$ 51,370	$ 73,534	$ 26,297	$ 31,875
Accounts and notes receivable, net	105,245	84,156
Other current assets	158,717	111,847
Total current assets	315,332	269,537
Property and equipment, net	497,902	392,735
Intangible assets, net	209,862	121,230
Goodwill	774,939	533,075	548,936
Deferred tax asset, net	6,925	13,004
Prepaid expenses, deferred costs, and other noncurrent assets	57,756	35,115
Total assets	1,862,716	1,364,696
LIABILITIES AND SHAREHOLDERS’ EQUITY
Current portion of other long-term liabilities	31,370	28,237
Accounts payable and accrued liabilities	351,180	285,583
Total current liabilities	382,550	313,820
Long-term debt	917,721	502,539
Asset retirement obligations	59,920	45,086
Deferred tax liability, net	37,130	27,625
Other long-term liabilities	75,002	18,691
Total liabilities	1,472,323	907,761
Shareholders' equity	390,393	456,935	369,793	286,535
Total liabilities and shareholders' equity	1,862,716	1,364,696
Eliminations
Assets
Property and equipment, net	(168)
Intangible assets, net	(723)
Investments in and advances to subsidiaries	(1,243,403)	(2,073,087)
Intercompany receivable	(779,656)	(2,178,314)
Total assets	(2,023,950)	(4,251,401)
LIABILITIES AND SHAREHOLDERS’ EQUITY
Current portion of other long-term liabilities	(12)	(16)
Accounts payable and accrued liabilities		(67)
Total current liabilities	(12)	(83)
Intercompany payable	(783,144)	(2,178,314)
Total liabilities	(783,156)	(2,178,397)
Shareholders' equity	(1,240,794)	(2,073,004)
Total liabilities and shareholders' equity	(2,023,950)	(4,251,401)
Parent [Member] | Reportable Legal Entities [Member]
Assets
Cash and cash equivalents	89	101
Other current assets	400
Total current assets	489	101
Investments in and advances to subsidiaries	385,729	452,014
Intercompany receivable	10,231	12,962
Deferred tax asset, net	332	537
Total assets	396,781	465,614
LIABILITIES AND SHAREHOLDERS’ EQUITY
Accounts payable and accrued liabilities	979	(15)
Total current liabilities	979	(15)
Intercompany payable	5,409	8,694
Total liabilities	6,388	8,679
Shareholders' equity	390,393	456,935
Total liabilities and shareholders' equity	396,781	465,614
Issuer | Reportable Legal Entities [Member]
Assets
Cash and cash equivalents	7	7	782
Other current assets	1,585	1,468
Total current assets	1,592	1,475
Investments in and advances to subsidiaries	465,347	748,278
Intercompany receivable	211,540	297,790
Prepaid expenses, deferred costs, and other noncurrent assets	12,172	504
Total assets	690,651	1,048,047
LIABILITIES AND SHAREHOLDERS’ EQUITY
Current portion of other long-term liabilities	4,892
Accounts payable and accrued liabilities	10,070	17,152
Total current liabilities	14,962	17,152
Long-term debt	504,912	502,539
Intercompany payable	4,272	82,660
Other long-term liabilities	3,997	504
Total liabilities	528,143	602,855
Shareholders' equity	162,508	445,192
Total liabilities and shareholders' equity	690,651	1,048,047
Guarantors [Member] | Reportable Legal Entities [Member]
Assets
Cash and cash equivalents	15,807	6,995	6,200	(247)
Accounts and notes receivable, net	55,912	59,375
Deferred tax asset, net	(3,466)
Other current assets	73,847	52,087
Total current assets	142,100	118,457
Property and equipment, net	312,591	271,142
Intangible assets, net	159,248	89,028
Goodwill	572,275	450,229
Investments in and advances to subsidiaries	392,327	872,795
Intercompany receivable	71,477	251,754
Deferred tax asset, net	1,343	1,462
Prepaid expenses, deferred costs, and other noncurrent assets	28,763	22,098
Total assets	1,680,124	2,076,965
LIABILITIES AND SHAREHOLDERS’ EQUITY
Current portion of other long-term liabilities	21,746	22,662
Accounts payable and accrued liabilities	205,199	179,489
Total current liabilities	226,945	202,151
Long-term debt	394,596
Intercompany payable	673,053	1,248,493
Asset retirement obligations	25,424	21,746
Deferred tax liability, net	34,926	24,953
Other long-term liabilities	25,402	14,305
Total liabilities	1,380,346	1,511,648
Shareholders' equity	299,778	565,317
Total liabilities and shareholders' equity	1,680,124	2,076,965
Non-Guarantors [Member] | Reportable Legal Entities [Member]
Assets
Cash and cash equivalents	35,467	66,431	$ 19,315	$ 32,122
Accounts and notes receivable, net	49,333	24,781
Deferred tax asset, net	3,466
Other current assets	82,885	58,292
Total current assets	171,151	149,504
Property and equipment, net	185,479	121,593
Intangible assets, net	51,337	32,202
Goodwill	202,664	82,846
Intercompany receivable	486,408	1,615,808
Deferred tax asset, net	5,250	11,005
Prepaid expenses, deferred costs, and other noncurrent assets	16,821	12,513
Total assets	1,119,110	2,025,471
LIABILITIES AND SHAREHOLDERS’ EQUITY
Current portion of other long-term liabilities	4,744	5,591
Accounts payable and accrued liabilities	134,932	89,024
Total current liabilities	139,676	94,615
Long-term debt	18,213
Intercompany payable	100,410	838,467
Asset retirement obligations	34,496	23,340
Deferred tax liability, net	2,204	2,672
Other long-term liabilities	45,603	3,882
Total liabilities	340,602	962,976
Shareholders' equity	778,508	1,062,495
Total liabilities and shareholders' equity	$ 1,119,110	$ 2,025,471