Information Concerning Guarantor and Non-Guarantor Subsidiaries - Condensed Consolidating Statement of Cash Flows (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) continuing operating activities	$ 137,605	$ 176,394	$ 153,904
Net cash provided by discontinued operating activities	94	76	15
Net cash provided by (used in) operating activities	137,699	176,470	153,919
Purchases of property and equipment	(36,959)	(95,233)	(132,592)
Sale of management rights and intellectual property		210,000
Collection of notes receivable	1,740	4,480	2,465
Increase in restricted cash and cash equivalents	(13,959)	(5,060)
Other investing activities	437	869	1,848
Net cash provided by (used in) investing activities - continuing operations	(48,741)	115,056	(128,279)
Net cash used in investing activities - discontinued operations
Net cash provided by (used in) investing activities	(48,741)	115,056	(128,279)
Net borrowings (repayments) under credit facility	(35,500)	(55,000)	(100,000)
Issuance of senior notes	350,000
Early redemption of senior notes	(152,180)
Repurchase and conversion of convertible notes	(99,222)
Deferred financing costs paid	(15,738)	(376)	(10,074)
Proceeds from the issuance of common stock		32,722
Repurchase of Company stock for retirement	(100,028)	(185,400)
Payment of dividend	(76,424)	(62,007)
Proceeds from exercise of stock option and purchase plans	5,223	25,336	4,828
Excess tax benefit from stock-based compensation	7	6,736
Other financing activities, net	(687)	(755)	(404)
Net cash provided by (used in) financing activities - continuing operations	(124,549)	(238,744)	(105,650)
Net cash used in financing activities - discontinued operations
Net cash provided by (used in) financing activities	(124,549)	(238,744)	(105,650)
Net change in cash and cash equivalents	(35,591)	52,782	(80,010)
Cash and cash equivalents at beginning of period	97,170	44,388	124,398
Cash and cash equivalents at end of period	61,579	97,170	44,388
Parent Guarantor [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) continuing operating activities	422,624	67,789	31,002
Net cash provided by discontinued operating activities
Net cash provided by (used in) operating activities	422,624	67,789	31,002
Purchases of property and equipment		(7,362)	(6,110)
Sale of management rights and intellectual property		20,000
Collection of notes receivable
Increase in restricted cash and cash equivalents
Other investing activities			3
Net cash provided by (used in) investing activities - continuing operations		12,638	(6,107)
Net cash used in investing activities - discontinued operations
Net cash provided by (used in) investing activities		12,638	(6,107)
Net borrowings (repayments) under credit facility		65,000	(100,000)
Issuance of senior notes
Early redemption of senior notes	(152,180)
Repurchase and conversion of convertible notes	(99,222)
Deferred financing costs paid		(376)	(10,074)
Proceeds from the issuance of common stock		32,722
Repurchase of Company stock for retirement	(100,028)	(185,400)
Payment of dividend	(76,424)	(62,007)
Proceeds from exercise of stock option and purchase plans	5,223	25,336	4,828
Excess tax benefit from stock-based compensation	7	6,736
Other financing activities, net
Net cash provided by (used in) financing activities - continuing operations	(422,624)	(117,989)	(105,246)
Net cash used in financing activities - discontinued operations
Net cash provided by (used in) financing activities	(422,624)	(117,989)	(105,246)
Net change in cash and cash equivalents		(37,562)	(80,351)
Cash and cash equivalents at beginning of period		37,562	117,913
Cash and cash equivalents at end of period			37,562
Issuer [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) continuing operating activities	(298,048)	120,000
Net cash provided by discontinued operating activities
Net cash provided by (used in) operating activities	(298,048)	120,000
Purchases of property and equipment
Sale of management rights and intellectual property
Collection of notes receivable
Increase in restricted cash and cash equivalents
Other investing activities
Net cash provided by (used in) investing activities - continuing operations
Net cash used in investing activities - discontinued operations
Net cash provided by (used in) investing activities
Net borrowings (repayments) under credit facility	(35,500)	(120,000)
Issuance of senior notes	350,000
Early redemption of senior notes
Repurchase and conversion of convertible notes
Deferred financing costs paid	(15,738)
Proceeds from the issuance of common stock
Repurchase of Company stock for retirement
Payment of dividend
Proceeds from exercise of stock option and purchase plans
Excess tax benefit from stock-based compensation
Other financing activities, net
Net cash provided by (used in) financing activities - continuing operations	298,762	(120,000)
Net cash used in financing activities - discontinued operations
Net cash provided by (used in) financing activities	298,762	(120,000)
Net change in cash and cash equivalents	714
Cash and cash equivalents at beginning of period
Cash and cash equivalents at end of period	714
Guarantors [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) continuing operating activities	(2,164)	(490)
Net cash provided by discontinued operating activities
Net cash provided by (used in) operating activities	(2,164)	(490)
Purchases of property and equipment	2,759	(105)
Sale of management rights and intellectual property
Collection of notes receivable
Increase in restricted cash and cash equivalents
Other investing activities
Net cash provided by (used in) investing activities - continuing operations	2,759	(105)
Net cash used in investing activities - discontinued operations
Net cash provided by (used in) investing activities	2,759	(105)
Net borrowings (repayments) under credit facility
Issuance of senior notes
Early redemption of senior notes
Repurchase and conversion of convertible notes
Deferred financing costs paid
Proceeds from the issuance of common stock
Repurchase of Company stock for retirement
Payment of dividend
Proceeds from exercise of stock option and purchase plans
Excess tax benefit from stock-based compensation
Other financing activities, net
Net cash provided by (used in) financing activities - continuing operations
Net cash used in financing activities - discontinued operations
Net cash provided by (used in) financing activities
Net change in cash and cash equivalents	595	(595)
Cash and cash equivalents at beginning of period	(595)
Cash and cash equivalents at end of period		(595)
Non-Guarantors [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) continuing operating activities	15,193	(10,905)	122,902
Net cash provided by discontinued operating activities	94	76	15
Net cash provided by (used in) operating activities	15,287	(10,829)	122,917
Purchases of property and equipment	(39,718)	(87,766)	(126,482)
Sale of management rights and intellectual property		190,000
Collection of notes receivable	1,740	4,480	2,465
Increase in restricted cash and cash equivalents	(13,959)	(5,060)
Other investing activities	437	869	1,845
Net cash provided by (used in) investing activities - continuing operations	(51,500)	102,523	(122,172)
Net cash used in investing activities - discontinued operations
Net cash provided by (used in) investing activities	(51,500)	102,523	(122,172)
Net borrowings (repayments) under credit facility
Issuance of senior notes
Early redemption of senior notes
Repurchase and conversion of convertible notes
Deferred financing costs paid
Proceeds from the issuance of common stock
Repurchase of Company stock for retirement
Payment of dividend
Proceeds from exercise of stock option and purchase plans
Excess tax benefit from stock-based compensation
Other financing activities, net	(687)	(755)	(404)
Net cash provided by (used in) financing activities - continuing operations	(687)	(755)	(404)
Net cash used in financing activities - discontinued operations
Net cash provided by (used in) financing activities	(687)	(755)	(404)
Net change in cash and cash equivalents	(36,900)	90,939	341
Cash and cash equivalents at beginning of period	97,765	6,826	6,485
Cash and cash equivalents at end of period	60,865	97,765	6,826
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) continuing operating activities
Net cash provided by discontinued operating activities
Net cash provided by (used in) operating activities
Purchases of property and equipment
Sale of management rights and intellectual property
Collection of notes receivable
Increase in restricted cash and cash equivalents
Other investing activities
Net cash provided by (used in) investing activities - continuing operations
Net cash used in investing activities - discontinued operations
Net cash provided by (used in) investing activities
Net borrowings (repayments) under credit facility
Issuance of senior notes
Early redemption of senior notes
Repurchase and conversion of convertible notes
Deferred financing costs paid
Proceeds from the issuance of common stock
Repurchase of Company stock for retirement
Payment of dividend
Proceeds from exercise of stock option and purchase plans
Excess tax benefit from stock-based compensation
Other financing activities, net
Net cash provided by (used in) financing activities - continuing operations
Net cash used in financing activities - discontinued operations
Net cash provided by (used in) financing activities
Net change in cash and cash equivalents
Cash and cash equivalents at beginning of period
Cash and cash equivalents at end of period