Fair Value - Contractual Override, Note Receivable and Long-Term Debt (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Fair Value Disclosures [Abstract]
Fair Value of Sugar Camp override, current and long-term	$ 6,534	$ 6,852
Fair Value of Long-term debt, current and long-term	993,935	1,071,880
Carrying Value of Sugar Camp override, current and long-term	6,227	6,063
Carrying Value of Long-term debt, current and long-term	$ 990,480	$ 1,046,209