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Long-Term Debt - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	0 Months Ended	1 Months Ended		0 Months Ended	3 Months Ended	0 Months Ended		3 Months Ended
	Mar. 14, 2014 Senior Secured Notes [Member]	Nov. 30, 2011 Senior Secured Notes [Member]	Mar. 31, 2014 Senior Secured Notes [Member]	Apr. 12, 2011 Senior Secured Notes [Member] Private Placement [Member]	Mar. 31, 2014 Senior Secured Notes [Member] Private Placement [Member]	Apr. 12, 2011 Senior Secured Credit Note [Member]	Apr. 12, 2011 Subordinated Note [Member]	Mar. 31, 2014 Senior Secured Notes [Member]	Mar. 31, 2013 Senior Secured Notes [Member]	Mar. 14, 2014 November Two Thousand Eleven Senior Notes [Member]	Nov. 30, 2011 November Two Thousand Eleven Senior Notes [Member]
Debt Instrument [Line Items]
Issuance of private placement, principal amount				$ 200.0
Interest rate			8.75%	8.75%
Retirement of notes, principal amount						22.4	100.0
Cost to issue the notes				4.6
Term of payments of interest on notes					Semi-annually
Private placement date				Apr. 12, 2011
Total amount of debt to be retired	50.0									5.0
Percentage of debt to be retired from the total debt	25.00%
Aggregate face amount of debt redeemed	45.0
Redemption price as a percentage of face amount	106.563%
Aggregate face amount of debt redeemed											4.7
Outstanding principal amount of the debt		150.0
Annual interest cost reduction due to retirement of debt		3.9
Interest expense on note								$ 4.3	$ 4.3

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Percentage of principal amount of debt retired.

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Principal amount of debt instrument that was retired

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Reduction in interest expenses.

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The carrying amount of the debt instrument at time of retirement.

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Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

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-Name Regulation S-X (SX)

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Face (par) amount of debt instrument at time of issuance.

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Description of the frequency of periodic payments (monthly, quarterly, annual).

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

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Date the debt instrument was issued, in CCYY-MM-DD format.

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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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Fair value amount of debt instrument that was repurchased.

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Face (par) amount of the original debt instrument that was repurchased.

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Aggregate amount of interest paid or due on all long-term debt.

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The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

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