Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 73,534	$ 26,297
Accounts and notes receivable, net of allowance for doubtful accounts of $1,931 and $2,079 as of December 31, 2016 and December 31, 2015, respectively	84,156	72,009
Inventory, net	12,527	10,675
Restricted cash	32,213	31,565
Current portion of deferred tax asset, net		16,300
Prepaid expenses, deferred costs, and other current assets	67,107	56,678
Total current assets	269,537	213,524
Property and equipment, net of accumulated depreciation of $397,972 and $360,722 as of December 31, 2016 and December 31, 2015, respectively	392,735	375,488
Intangible assets, net	121,230	150,780
Goodwill	533,075	548,936
Deferred tax asset, net	13,004	11,950
Prepaid expenses, deferred costs, and other noncurrent assets	35,115	19,257
Total assets	1,364,696	1,319,935
Current liabilities:
Current portion of other long-term liabilities	28,237	32,732
Accounts payable	44,965	25,850
Accrued liabilities	240,618	219,058
Total current liabilities	313,820	277,640
Long-term liabilities:
Long-term debt	502,539	568,331
Asset retirement obligations	45,086	51,685
Deferred tax liability, net	27,625	21,829
Other long-term liabilities	18,691	30,657
Total liabilities	907,761	950,142
Commitments and contingencies (See Note 17)
Shareholders' equity:
Ordinary shares, $0.01 nominal value, 45,326,430 issued and outstanding as of December 31, 2016; $0.0001 par value; 125,000,000 authorized; 52,129,395 issued and 44,953,620 outstanding as of December 31, 2015 (See Note 13)	453	5
Additional paid-in capital (See Note 13)	311,041	374,564
Accumulated other comprehensive loss, net	(107,135)	(88,126)
Retained earnings	252,656	185,897
Treasury shares: 7,175,775 at cost as of December 31, 2015 (See Note 13)		(102,566)
Total parent shareholders' equity	457,015	369,774
Noncontrolling interests	(80)	19
Total shareholders' equity	456,935	369,793
Total liabilities and shareholders' equity	$ 1,364,696	$ 1,319,935