v3.6.0.2

Long Term Debt - Additional Information (Detail) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2016 | 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 | $ 631,247,000 | $ 553,501,000 |
Pretax charge related to early redemption of senior notes |  |  | (29,833,000)
Letters of credit outstanding under the facility | $ 13,000,000 | 15,300,000 |
Middle East [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Revolving credit facility, maturity date | Oct. 29, 2017 |  |
Letter of credit securing workers compensation policy | $ 9,200,000 |  |
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 | $ 474,400,000 | 403,100,000 |
5.25% Senior Notes due March 15, 2019 [Member] | Senior Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate on Senior Notes | 5.25% |  |
Percentage of principal amount redeemed | 101.00% |  |
Debt instrument restrictive covenants | The Notes contain restrictive covenants, including limitations on incurring indebtedness, creating liens, selling assets, and entering into certain transactions with affiliates. The covenants limit our ability to pay cash dividends on common stock, repurchase or redeem common or preferred equity, prepay subordinated debt, and make certain investments. |  |
Proceeds from issuance of senior notes |  |  | $ 493,800,000
8.625 % Senior Note due 2018 [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
Interest Expense Fund [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Periodic payment of debt interest | $ 29,200,000 | $ 27,700,000 |
Revolving Credit Facility [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Revolving credit facility, maturity date | Oct. 01, 2018 |  |
Maximum short term investment to test fixed charge coverage ratio | $ 150,000,000 |  |
Increased Borrowing capacity | $ 150,000,000 |  |
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 |  |
Letters of credit outstanding under the facility | 7,600,000 |  |
Letter of credit securing workers compensation policy | $ 3,800,000 |  |
Revolving Credit Facility [Member] | LIBOR [Member] |  |  |
Debt Instrument [Line Items] |  |  |
LIBOR plus interest rate on borrowed funds | 225.00% |  |

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