Long-term Debt - Schedule Of Long-Term Debt (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Senior Bank Debt (Secured):
New senior secured term loan facility, payable quarterly, U.S. Dollar denominated–LIBOR (minimum 1.25%) plus 5.0% (6.25%) as of December 31, 2014, net of $0.9 million discount. Matures May of 2018	$ 226,052us-gaap_SecuredDebt	$ 198,000us-gaap_SecuredDebt
Other Long-Term Debt:
Carrying value of long-term debt	465,246us-gaap_LongTermDebt	434,872us-gaap_LongTermDebt
Less current maturities	4,406us-gaap_LongTermDebtCurrent	2,166us-gaap_LongTermDebtCurrent
Total	460,840us-gaap_LongTermDebtNoncurrent	432,706us-gaap_LongTermDebtNoncurrent
Senior Secured Term Loan Facility
Senior Bank Debt (Secured):
New senior secured term loan facility, payable quarterly, U.S. Dollar denominated–LIBOR (minimum 1.25%) plus 5.0% (6.25%) as of December 31, 2014, net of $0.9 million discount. Matures May of 2018	226,052	198,000
Other Long-Term Debt:
LIBOR rate, minimum	1.25%
Interest rate Percentage above LIBOR rate	5.00%
Debt instrument interest rate	6.25%
Debt discount	900
Senior Notes Unsecured
Senior Bank Debt (Secured):
Senior Notes (Unsecured), payable semi-annually–U.S. Dollar denominated interest rate fixed at 8.875%, matures June of 2018	236,410	236,410
Other Long-Term Debt:
Debt instrument fixed interest rate	8.875%
Debt instrument maturity	Jun. 01, 2018
Various Debt at Fixed Interest Rates
Other Long-Term Debt:
Various debt at fixed interest rates	$ 2,784	$ 462

Contractual interest rate for funds borrowed, under the debt agreement.

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

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Including both current and noncurrent portions, carrying amount as of the balance sheet date of other forms of debt not elsewhere specified in the taxonomy with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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Carrying value as of the balance sheet date of uncollateralized debt obligation (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

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Debt Instrument Interest Rate Percentage Above Libor Rate

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Libor Rate Minimum

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