v3.3.1.900

Long Term Debt - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Proceeds from issuance of senior notes		$ 500,000,000
Carrying value of Long-term Debt	$ 557,500,000	543,000,000
Pretax charge related to early redemption of senior notes		(29,833,000)
Letters of credit outstanding under the facility	15,300,000	15,500,000
Letter of credit securing workers compensation policy	$ 2,600,000	2,500,000
Middle East [Member]
Debt Instrument [Line Items]
Revolving credit facility, maturity date	Oct. 29, 2016
Letter of credit securing contract in Middle East	$ 9,200,000
Middle East [Member] | Maximum [Member]
Debt Instrument [Line Items]
Letter of credit, extended period	1 year
5.25% Senior Notes due March 15, 2019 [Member]
Debt Instrument [Line Items]
Carrying value of Long-term Debt	$ 500,000,000	500,000,000
Fair market value of Senior Notes	$ 403,100,000	425,600,000
5.25% Senior Notes due March 15, 2019 [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Interest rate on Senior Notes	5.25%
Debt instrument redemption date	On or after March 15, 2016
Percentage of principal amount redeemed	101.00%
Proceeds from issuance of senior notes		493,800,000
Carrying value of Long-term Debt	$ 500,000,000	$ 500,000,000
Eight Point Six Two Five Percent Senior Note Due Two Thousand Eighteen [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Interest rate on Senior Notes		8.625%
Carrying value of Long-term Debt		$ 300,000,000
Cost of debt repayment		329,400,000
Pretax charge related to early redemption of senior notes		(29,800,000)
Premium on early redemption of senior notes		26,700,000
Write off of unamortized financing costs		3,100,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Carrying value of Long-term Debt	57,500,000	$ 43,000,000
Increased Borrowing capacity	$ 150,000,000
Revolving credit facility, maturity date	Oct. 01, 2017
Revolving Credit facility, Covenants, consolidated working capital ratio	200.00%
Revolving Credit facility, Covenants, consolidated net worth ratio	150.00%
Revolving Credit facility, Covenants, fixed coverage ratio	110.00%
Revolving Credit facility, Covenants, consolidated net worth	$ 450,000,000
Letter of credit securing workers compensation policy	$ 6,100,000
Revolving Credit Facility [Member] | LIBOR [Member]
Debt Instrument [Line Items]
LIBOR plus interest rate on borrowed funds	225.00%

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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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

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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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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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