Accounting Policies (Comparison of Reported Condensed Consolidated Balance Sheet to the Pro-forma Amounts had the Previous U.S. GAAP Guidance been in Effect) (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
ASSETS
Cash and cash equivalents	$ 159,229	$ 187,675
Accounts receivable	259,865	234,597
Inventories	179,039	164,318
Property and equipment, net	384,246	379,096
TOTAL ASSETS	1,469,492	1,713,416
LIABILITIES AND STOCKHOLDERS’ DEFICIT
Accounts payable	70,409	66,968
Accrued liabilities	210,384	253,418
Deferred income tax liabilities	27,529	25,353
Other long-term liabilities	84,573	95,718
Total liabilities	1,518,474	1,767,258
Stockholders’ Deficit:
Retained earnings	880,348	803,545
Accumulated other comprehensive loss	(34,206)	(36,470)
Total stockholders’ deficit	(48,982)	(53,842)
TOTAL LIABILITIES AND STOCKHOLDERS’ DEFICIT	1,469,492	1,713,416
Accounting Standards Update 2014-09 [Member]
ASSETS
Cash and cash equivalents	159,229
Accounts receivable	259,865	237,281
Inventories	179,039	163,184
Property and equipment, net	384,246	379,096
Goodwill and intangible assets, net	242,915	243,719
Other assets	244,198	246,481
TOTAL ASSETS	1,469,492	1,741,691
LIABILITIES AND STOCKHOLDERS’ DEFICIT
Accounts payable	70,409	66,968
Accrued liabilities	210,384	254,381
Deferred income tax liabilities	27,529	25,087
Line of credit and long-term debt	1,016,505	1,261,075
Deferred revenue	109,074	110,158
Other long-term liabilities	84,573	82,840
Total liabilities	1,518,474	1,800,509
Stockholders’ Deficit:
Retained earnings	880,348	798,569
Accumulated other comprehensive loss	(34,206)
All other stockholders' deficit and noncontrolling interest	(895,124)	(857,387)
Total stockholders’ deficit	(48,982)	(58,818)
TOTAL LIABILITIES AND STOCKHOLDERS’ DEFICIT	1,469,492	1,741,691
Attributed to the New Revenue Standard [Member] | Accounting Standards Update 2014-09 [Member]
ASSETS
Accounts receivable	2,651	2,684
Inventories	(1,289)	(1,134)
Other assets	31,302	26,725
TOTAL ASSETS	32,664	28,275
LIABILITIES AND STOCKHOLDERS’ DEFICIT
Accrued liabilities	947	963
Deferred income tax liabilities	(2,257)	(266)
Deferred revenue	44,261	45,432
Other long-term liabilities	(9,723)	(12,878)
Total liabilities	33,228	33,251
Stockholders’ Deficit:
Retained earnings	(437)	(4,976)
Accumulated other comprehensive loss	(127)
Total stockholders’ deficit	(564)	(4,976)
TOTAL LIABILITIES AND STOCKHOLDERS’ DEFICIT	32,664	28,275
Previous U.S. GAAP (Reported) [Member] | Accounting Standards Update 2014-09 [Member]
ASSETS
Cash and cash equivalents	159,229
Accounts receivable	257,214	234,597
Inventories	180,328	164,318
Property and equipment, net	384,246	379,096
Goodwill and intangible assets, net	242,915	243,719
Other assets	212,896	219,756
TOTAL ASSETS	1,436,828	1,713,416
LIABILITIES AND STOCKHOLDERS’ DEFICIT
Accounts payable	70,409	66,968
Accrued liabilities	209,437	253,418
Deferred income tax liabilities	29,786	25,353
Line of credit and long-term debt	1,016,505	1,261,075
Deferred revenue	64,813	64,726
Other long-term liabilities	94,296	95,718
Total liabilities	1,485,246	1,767,258
Stockholders’ Deficit:
Retained earnings	880,785	803,545
Accumulated other comprehensive loss	(34,079)
All other stockholders' deficit and noncontrolling interest	(895,124)	(857,387)
Total stockholders’ deficit	(48,418)	(53,842)
TOTAL LIABILITIES AND STOCKHOLDERS’ DEFICIT	$ 1,436,828	$ 1,713,416