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Long-Term Debt - Additional Information (Detail) (USD $)
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0 Months Ended | 3 Months Ended | 0 Months Ended | 1 Months Ended | 3 Months Ended | 3 Months Ended | 0 Months Ended | 3 Months Ended | 0 Months Ended | 0 Months Ended | 0 Months Ended | 1 Months Ended | 3 Months Ended | 3 Months Ended | 0 Months Ended | 3 Months Ended | |||||||||||||||||||||||||||
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Jan. 22, 2014
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Mar. 31, 2014
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Mar. 31, 2013
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Dec. 31, 2013
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Dec. 14, 2012
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Jul. 30, 2013
Unsecured Debt [Member]
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Mar. 31, 2014
Unsecured Debt [Member]
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Dec. 14, 2012
Secured Debt [Member]
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Mar. 31, 2014
Secured Debt [Member]
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Jan. 22, 2014
Secured Debt [Member]
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Mar. 31, 2014
Revolving Credit Facility [Member]
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Dec. 31, 2013
Revolving Credit Facility [Member]
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Mar. 31, 2014
6.75% Senior Notes, due July 2022 [Member]
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Jan. 22, 2014
6.75% Senior Notes, due July 2022 [Member]
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Dec. 31, 2013
6.75% Senior Notes, due July 2022 [Member]
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Jan. 22, 2014
9.125% Senior Notes, due April 2018 [Member]
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Jan. 07, 2014
9.125% Senior Notes, due April 2018 [Member]
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Mar. 31, 2014
9.125% Senior Notes, due April 2018 [Member]
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Dec. 31, 2013
9.125% Senior Notes, due April 2018 [Member]
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Mar. 22, 2010
9.125% Senior Notes, due April 2018 [Member]
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Apr. 03, 2014
9.125% Senior Notes, due April 2018 [Member]
Subsequent Event [Member]
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Apr. 02, 2014
9.125% Senior Notes, due April 2018 [Member]
Subsequent Event [Member]
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Mar. 31, 2014
7.50% Senior Notes, due August 2020 [Member]
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Jan. 22, 2014
7.50% Senior Notes, due August 2020 [Member]
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Dec. 31, 2013
7.50% Senior Notes, due August 2020 [Member]
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Jul. 30, 2013
7.50% Senior Notes, due August 2020 [Member]
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Mar. 22, 2010
9.625% Senior Notes due 2013 [Member]
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Mar. 31, 2014
9.625% Senior Notes due 2013 [Member]
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Mar. 22, 2010
Senior secured revolving credit facility (Revolver) [Member]
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Apr. 30, 2012
9.125% Senior Notes, due April 2018 (Issued April 25, 2012) [Member]
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Mar. 31, 2014
9.125% Senior Notes, due April 2018 (Issued April 25, 2012) [Member]
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Apr. 25, 2012
9.125% Senior Notes, due April 2018 (Issued April 25, 2012) [Member]
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Apr. 25, 2012
2.125% Convertible Senior Notes due July 2012 [Member]
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Mar. 31, 2014
Term Note [Member]
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Dec. 14, 2012
Term Note [Member]
Secured Debt [Member]
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Mar. 31, 2014
Term Note Due December 2017 [Member]
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Dec. 31, 2013
Term Note Due December 2017 [Member]
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Dec. 14, 2012
Term Note Due December 2017 [Member]
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Apr. 18, 2013
Secured Debt [Member]
Goldman Term Loan [Member]
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Apr. 18, 2013
ITS [Member]
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Mar. 31, 2014
ITS [Member]
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Mar. 31, 2014
ITS [Member]
Term Note Due April 2018 [Member]
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Jul. 30, 2013
ITS [Member]
Term Note Due April 2018 [Member]
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| Debt Instrument [Line Items] | |||||||||||||||||||||||||||||||||||||||||||
| Aggregate principal amount | $ 360,000,000.0 | $ 300,000,000.0 | $ 225,000,000.0 | $ 125,000,000.0 | $ 125,000,000 | ||||||||||||||||||||||||||||||||||||||
| Percentage of notes guaranteed by restricted subsidiaries | 6.75% | 6.75% | 9.125% | 9.125% | 7.50% | 7.50% | 7.50% | 9.625% | 2.125% | 7.50% | |||||||||||||||||||||||||||||||||
| Tender Offer Price for Each 1000 Principal Amount | 1,061.98 | ||||||||||||||||||||||||||||||||||||||||||
| Increase in the amount of term loan or revolving credit facility | 45,000,000 | 50,000,000 | |||||||||||||||||||||||||||||||||||||||||
| Deferred acquisition costs | 5,100,000 | 5,500,000 | |||||||||||||||||||||||||||||||||||||||||
| Redemption amount percentage of principal | 35.00% | 35.00% | |||||||||||||||||||||||||||||||||||||||||
| Redemption price | 106.75% | 107.50% | |||||||||||||||||||||||||||||||||||||||||
| Redemption price after year three | 103.375% | 103.75% | |||||||||||||||||||||||||||||||||||||||||
| Redemption price afer year five | 101.00% | 101.00% | |||||||||||||||||||||||||||||||||||||||||
| Debt premium | 3,700,000 | ||||||||||||||||||||||||||||||||||||||||||
| Par value of senior notes | 104.00% | ||||||||||||||||||||||||||||||||||||||||||
| Repayments of debt | 225,000,000 | 42,000,000 | |||||||||||||||||||||||||||||||||||||||||
| Gross proceeds of aggregate principal amount additional issued | 130,000,000 | ||||||||||||||||||||||||||||||||||||||||||
| Debt issuance costs | 7,300,000 | 7,600,000 | 5,400,000 | ||||||||||||||||||||||||||||||||||||||||
| Debt issuance cost, Net of amortization | 7,100,000 | ||||||||||||||||||||||||||||||||||||||||||
| Tender Offer Price per Note, Consent Payment | 30.00 | ||||||||||||||||||||||||||||||||||||||||||
| Payments of Debt Issuance Costs | 7,273,000 | 307,000 | 453,700,000 | ||||||||||||||||||||||||||||||||||||||||
| Senior secured credit facility | 80,000,000.0 | 50,000,000.0 | |||||||||||||||||||||||||||||||||||||||||
| Proceeds from issuance of term note | 9,600,000 | 225,000,000 | |||||||||||||||||||||||||||||||||||||||||
| Payments of debt extinguishment costs | 25,796,000 | 0 | |||||||||||||||||||||||||||||||||||||||||
| Aggregate commitment amount | 180,000,000.0 | ||||||||||||||||||||||||||||||||||||||||||
| Maturity of credit facility | Dec. 14, 2017 | ||||||||||||||||||||||||||||||||||||||||||
| Variation in applicable rate for LIBOR Rate Loan | 2.50% | ||||||||||||||||||||||||||||||||||||||||||
| Variation in applicable rate for LIBOR Rate Loan | 3.00% | ||||||||||||||||||||||||||||||||||||||||||
| Variation in applicable rate for Base Rate Loan | 1.50% | ||||||||||||||||||||||||||||||||||||||||||
| Variation in applicable rate for Base Rate Loan | 2.00% | ||||||||||||||||||||||||||||||||||||||||||
| Revolving loan outstanding | 37,500,000 | 40,000,000 | 0 | 0 | |||||||||||||||||||||||||||||||||||||||
| Repayments of long term debt | 416,199,000 | 0 | 416,200,000 | ||||||||||||||||||||||||||||||||||||||||
| Debt Instrument Accrued Interest | 11,700,000 | ||||||||||||||||||||||||||||||||||||||||||
| Unsolicited Tender Offer Costs | 25,800,000 | ||||||||||||||||||||||||||||||||||||||||||
| Senior Notes | 8,800,000 | ||||||||||||||||||||||||||||||||||||||||||
| Redemption Premium | 400,000 | ||||||||||||||||||||||||||||||||||||||||||
| Interest Expense | 12,039,000 | 10,006,000 | 400,000 | ||||||||||||||||||||||||||||||||||||||||
| Letters of credit outstanding | 6,000,000 | 4,600,000 | |||||||||||||||||||||||||||||||||||||||||
| Long-term Debt | 631,375,000 | 653,781,000 | 360,000,000 | 0 | 8,875,000 | 428,781,000 | 225,000,000 | 225,000,000 | 37,500,000 | 0 | 50,000,000 | 125,000,000 | |||||||||||||||||||||||||||||||
| Principal payments | $ 2,500,000 | ||||||||||||||||||||||||||||||||||||||||||
| Base rate plus | 2.00% | ||||||||||||||||||||||||||||||||||||||||||
| LIBOR plus | 3.00% | ||||||||||||||||||||||||||||||||||||||||||