Condensed Consolidating Statement of Cash Flows (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
Sep. 30, 2014	Sep. 30, 2013
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	$ 248,689	$ 283,604
Net cash provided by (used in) investing activities	(141,494)	(82,568)
Net cash provided by (used in) financing activities	(136,267)	(193,710)
Net increase (decrease) in cash and cash equivalents	(29,072)	7,326
CASH AND CASH EQUIVALENTS, beginning of period	77,919	62,897
CASH AND CASH EQUIVALENTS, end of period	48,847	70,223
Parent
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	253,232	165,603
Net cash provided by (used in) investing activities	(130,102)	(52,887)
Net cash provided by (used in) financing activities	(144,443)	(61,708)
Net increase (decrease) in cash and cash equivalents	(21,313)	51,008
CASH AND CASH EQUIVALENTS, beginning of period	31,647
CASH AND CASH EQUIVALENTS, end of period	10,334	51,008
Combined Subsidiary Guarantors
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	(4,543)	118,001
Net cash provided by (used in) investing activities	(81,892)	(44,681)
Net cash provided by (used in) financing activities	78,676	(117,002)
Net increase (decrease) in cash and cash equivalents	(7,759)	(43,682)
CASH AND CASH EQUIVALENTS, beginning of period	46,272	62,897
CASH AND CASH EQUIVALENTS, end of period	38,513	19,215
Consolidating Adjustments and Other
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) investing activities	70,500	15,000
Net cash provided by (used in) financing activities	$ (70,500)	$ (15,000)

- Definition

For the entity and the disposal group, cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits are not generally reported as cash and cash equivalents.

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