Debt - Additional Information (Detail) - Jun. 30, 2015 - USD ($)	Total	Total
Debt Instrument [Line Items]
Loss on extinguishment of debt	$ 17,550,000	$ 17,550,000
Provisions in future incremental borrowings	150,000,000	$ 150,000,000
Minimum percentage of senior secured term loan for interest rate protection		25.00%
Amount available for dividend payments under restrictive covenants	147,000,000	$ 147,000,000
Maximum [Member]
Debt Instrument [Line Items]
Leverage ratio		300.00%
Minimum [Member]
Debt Instrument [Line Items]
Default in payment of principal	10,000,000	$ 10,000,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Date of maturity		Jun. 17, 2020
Date of maturity		2016-04
Debt issuance costs		$ 1,700,000
Maximum borrowing capacity	50,000,000	50,000,000
Maximum borrowing capacity prior limit	25,000,000	25,000,000
Outstanding balance on the revolving credit facility	0	0
6.00% Senior Secured Notes [Member]
Debt Instrument [Line Items]
Senior secured notes, aggregate principal amount issued	$ 230,000,000	$ 230,000,000
Debt instrument issuance		2015-06
Interest rate	6.00%	6.00%
Date of maturity		Jun. 15, 2023
Date of maturity		2019-05
Interest payable periods		June 15 and December 15 of each year
Loss on extinguishment of debt	$ 17,550,000	$ 17,550,000
Debt prepayment penalty		11,600,000
Debt issuance costs		$ 5,659,000
Percentage of principal amount, redemption price	106.00%	106.00%
Repurchase of senior secured notes purchase price percentage	101.00%	101.00%
6.00% Senior Secured Notes [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Percentage of aggregate principal amount, maximum redeemable		40.00%
Percentage of principal amount redeemed at redemption date		104.50%
6.00% Senior Secured Notes [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Minimum percentage of aggregate principal amount outstanding, excluding the redemption date	60.00%	60.00%
Percentage of principal amount redeemed at redemption date		100.00%
6.00% Senior Secured Notes [Member] \| Secured Term Loan Facility [Member]
Debt Instrument [Line Items]
Senior secured notes, aggregate principal amount issued	$ 210,000,000	$ 210,000,000
Interest Rate Option, LIBOR Based [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Interest rate description		LIBOR plus a margin of 2.75%
Interest rate, margin added		2.75%
Commitment fees on unused portion of facility		0.50%
Interest Rate Option, Base Rate Based [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Interest rate description		Base Rate plus a margin of 1.75%
Interest rate, margin added		1.75%
Letter of Credit Sub-facility [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 10,000,000	$ 10,000,000

Debt Instrument Covenant Leverage Ratio

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- Definition

Debt instrument interest due periods.

+ References

No definition available.

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- Definition

Debt instrument issuance period month and year.

+ References

No definition available.

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- Definition

Debt instrument maturity year and month.

+ References

No definition available.

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- Definition

Debt Pre Payment Penalty

+ References

No definition available.

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- Definition

Line of credit facility, maximum borrowing capacity, prior limit.

+ References

No definition available.

+ Details

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- Definition

Minimum percentage of senior secured term loan for interest rate protection.

+ References

No definition available.

+ Details

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- Definition

Percentage of aggregate principal amount outstanding excluding redemption date.

+ References

No definition available.

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- Definition

Percentage of aggregate principal amount, redeemable.

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No definition available.

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- Definition

Percentage of principal amount redeemed at redemption date.

+ References

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- Definition

Percentage of principal amount redemption price.

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No definition available.

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- Definition

Provisions in future incremental borrowings.

+ References

No definition available.

+ Details

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- Definition

Repurchase of senior secured notes purchase price percentage.

+ References

No definition available.

+ Details

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- Definition

Amount of outstanding long-term debt or borrowing associated with any securities or credit agreement for which there has been a default in principal, interest, sinking fund, or redemption provisions, or any breach of covenant that existed at the end of the period and subsequently has not been cured.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(c))

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

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

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

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- Definition

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

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

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

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(2))

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- Definition

Amount of debt issuance costs (for example, but not limited to, legal, accounting, broker, and regulatory fees).

+ References

No definition available.

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- Definition

Amount of statutory capital and surplus computed using prescribed or permitted statutory accounting practice.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 505

-Section 50

-Paragraph 1

-Subparagraph (b)

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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

-Article 5

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- Definition

Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions).

+ References

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-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

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- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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