Financing Arrangements - Additional Information (Detail) - USD ($)	6 Months Ended
Jun. 30, 2016	Jun. 30, 2015
Debt Instrument [Line Items]
Consolidated fixed charge coverage ratio to be maintained	100.00%
Deposits to be made in case of default equaling, percentage of greatest amount of letter of credit drawn	105.00%
Seven Year Term Facility [Member]
Debt Instrument [Line Items]
Debt instrument, face amount		$ 365,000,000
Debt instrument discount percentage		1.25%
Debt instrument discount amount		$ 4,600,000
Increase in aggregate amount		37,500,000
Description of variable rate basis	The term loans under the Term Facility bear interest, with pricing based from time to time at the Company's election at (i) LIBOR plus a spread of 6.00% (with a LIBOR rate floor of 1.00%) or (ii) the Base Rate (as defined in our Term Facility) plus a spread of 5.00%.
Interest rate at end of period	7.00%
Prepayment terms	The Company is permitted to voluntarily prepay the Term Facility, in whole or in part, without premium or penalty.
Percentage of principal amount required to be paid quarterly	(0.25%)
Maturity date of term facility	Jun. 30, 2022
Percentage of net cash proceeds of all non-ordinary course sales or other dispositions of assets	100.00%
Percentage of net cash proceeds from issuances or incurrence of debt	100.00%
Percentage of excess cash flow	50.00%
Seven Year Term Facility [Member] \| Interest Rate Floor [Member]
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	5.00%
Revolving Line of Credit [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 50,000,000
Unfunded standby letter of credit outstanding	$ 8,800,000
Letter of credit, expiration date	Feb. 28, 2017
Renewal period of unfunded standby letter of credit	1 year
Period required for non renewal notification of debt instrument	60 days
Unfunded standby letter of credit payment term	The unfunded Standby Letter of Credit requires an annual fee, payable quarterly, which is set at LIBOR plus a spread of 2.00% and expires in February 2017.
Borrowing base	$ 43,300,000
Available borrowing capacity	34,400,000
Accrued interest	$ 100,000
Revolving Line of Credit [Member] \| LMI [Member]
Debt Instrument [Line Items]
Description of variable rate basis	The loans under the Revolving Facility bear interest with pricing based from time to time at the election of LMI at (i) LIBOR plus a spread of 2.00% or (ii) the Reference Rate (as defined in the Revolving Facility) plus 1.00%. The Revolving Facility also includes an unused line fee of 0.375% and expires on June 30, 2020.
Unused line of credit fee (as a percent)	0.375%
Maximum borrowing capacity	$ 50,000,000
Senior Notes [Member]
Debt Instrument [Line Items]
Debt instrument, face amount		$ 400,000,000
Notes interest rate		9.75%
LIBOR [Member] \| Seven Year Term Facility [Member]
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	6.00%
LIBOR [Member] \| Revolving Line of Credit [Member]
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	2.00%
LIBOR [Member] \| Revolving Line of Credit [Member] \| LMI [Member]
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	2.00%
Reference Rate [Member] \| Seven Year Term Facility [Member]
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	1.00%
Reference Rate [Member] \| Revolving Line of Credit [Member] \| LMI [Member]
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	1.00%

Consolidated fixed charge coverage ratio.

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- Definition

Debt instrument discount rate.

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No definition available.

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- Definition

Debt instrument prepayment percentage.

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Debt instrument prepayment terms.

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Non renewal notification period required in writing of debt instrument agreement.

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Percentage of excess cash flow.

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Percentage of greatest amount of letter of credit drawn.

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Percentage of net cash proceeds from issuances or incurrence of debt.

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Percentage of net cash proceeds of non ordinary sales or other dispositions of assets.

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Renewal period of debt instrument.

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- Definition

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

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The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

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- Definition

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

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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Contractual interest rate for funds borrowed, under the debt agreement.

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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.

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- Definition

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

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- Definition

Amount, after accumulated amortization, of debt discount.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-SubTopic 30
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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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Date the credit facility terminates, in CCYY-MM-DD format.

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Description of when the fee for available but unused credit capacity is required to be paid (for example, annually, quarterly, or monthly).

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Increase for accrued, but unpaid interest on the credit facility for the period.

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Amount of increase (decrease) of the credit facility.

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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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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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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.

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