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Long-Term Debt - Additional Information (Detail) (USD $)
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0 Months Ended | 3 Months Ended | 12 Months Ended | 0 Months Ended | 3 Months Ended | 0 Months Ended | 0 Months Ended | 12 Months Ended | 12 Months Ended | 0 Months Ended | 12 Months Ended | 0 Months Ended | 0 Months Ended | 1 Months Ended | 1 Months Ended | 3 Months Ended | 12 Months Ended | 0 Months Ended | 0 Months Ended | 3 Months Ended | 0 Months Ended | 0 Months Ended | 0 Months Ended | 1 Months Ended | 0 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. 31, 2012
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Dec. 31, 2011
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Jan. 22, 2014
Subsequent Event [Member]
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Jul. 30, 2013
ITS [Member]
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Apr. 18, 2013
ITS [Member]
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Mar. 31, 2014
ITS [Member]
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Apr. 25, 2012
9.125% Senior Notes, due April 2018 (Issued April 25, 2012) [Member]
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Dec. 31, 2013
9.125% Senior Notes, due April 2018 (Issued April 25, 2012) [Member]
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Jan. 22, 2014
9.125% Senior Notes, due April 2018 (Issued April 25, 2012) [Member]
Subsequent Event [Member]
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Jan. 07, 2014
9.125% Senior Notes, due April 2018 (Issued April 25, 2012) [Member]
Subsequent Event [Member]
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Jan. 22, 2014
6.75 Percent Senior Notes, due July 15, 2022 [Member]
Subsequent Event [Member]
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Dec. 31, 2013
9.125% Senior Notes, due April 2018 (Issued March 22, 2010) [Member]
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Mar. 22, 2010
9.125% Senior Notes, due April 2018 (Issued March 22, 2010) [Member]
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Jan. 22, 2014
9.125% Senior Notes, due April 2018 (Issued March 22, 2010) [Member]
Subsequent Event [Member]
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Jul. 30, 2013
7.50% Senior Notes, due August 2020 (Issued July 30, 2013) [Member]
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Sep. 30, 2013
7.50% Senior Notes, due August 2020 (Issued July 30, 2013) [Member]
ITS [Member]
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Jul. 30, 2013
7.50% Senior Notes, due August 2020 (Issued July 30, 2013) [Member]
ITS [Member]
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Dec. 31, 2013
7.50% Senior Notes, due August 2020 (Issued July 30, 2013) [Member]
Prior to August1, 2016 [Member]
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Dec. 31, 2013
7.50% Senior Notes, due August 2020 (Issued July 30, 2013) [Member]
On and after August 1, 2016 [Member]
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Jul. 30, 2013
Term Loan [Member]
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Dec. 31, 2013
Term Loan [Member]
ITS [Member]
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Dec. 31, 2013
Term Note Due April 2018 [Member]
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Jul. 30, 2013
Term Note Due April 2018 [Member]
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Mar. 31, 2014
Term Note Due April 2018 [Member]
ITS [Member]
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Jul. 30, 2013
Term Note Due April 2018 [Member]
ITS [Member]
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Mar. 22, 2010
Senior Notes One [Member]
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Mar. 31, 2014
Senior Notes One [Member]
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Mar. 22, 2010
Senior secured revolving credit facility (Revolver) [Member]
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May 09, 2012
2.125% Convertible Senior Notes due July 2012 [Member]
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May 31, 2012
2.125% Convertible Senior Notes, due July 2012 [Member]
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Jul. 15, 2012
2.125% Convertible Senior Notes, due July 2012 [Member]
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May 09, 2012
2.125% Convertible Senior Notes, due July 2012 [Member]
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Jul. 05, 2007
2.125% Convertible Senior Notes, due July 2012 [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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Dec. 31, 2013
9.125% Senior Notes, due April 2018 (Issued April 25, 2012) [Member]
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Jan. 22, 2014
Tendered Bonds [Member]
Subsequent Event [Member]
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Jan. 22, 2014
6.75% Senior Notes, due July 2022 [Member]
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Mar. 31, 2014
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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Dec. 31, 2012
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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Jul. 30, 2013
7.50% Senior Notes, due August 2020 [Member]
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Mar. 31, 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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Jan. 22, 2014
7.50% Senior Notes, due August 2020 [Member]
Prior to August1, 2016 [Member]
Subsequent Event [Member]
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Jan. 22, 2014
7.50% Senior Notes, due August 2020 [Member]
On and after August 1, 2016 [Member]
Subsequent Event [Member]
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Dec. 14, 2012
Secured Debt [Member]
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Apr. 30, 2011
Secured Debt [Member]
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Jan. 22, 2014
Secured Debt [Member]
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Dec. 31, 2012
Secured Debt [Member]
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Jul. 30, 2013
Secured Debt [Member]
Goldman Term Loan [Member]
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Apr. 18, 2013
Secured Debt [Member]
Goldman Term Loan [Member]
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Jul. 30, 2013
Unsecured Debt [Member]
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Mar. 31, 2014
Unsecured Debt [Member]
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| Debt Instrument [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Current portion of long-term debt | $ 18,801,000 | $ 25,000,000 | $ 10,000,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Debt instrument fixed interest rate | 9.125% | 9.125% | 9.125% | 9.125% | 6.75% | 9.125% | 7.50% | 7.50% | 7.50% | 9.625% | 9.625% | 2.125% | 6.75% | 6.75% | 9.125% | 9.125% | 9.125% | 7.50% | 7.50% | 7.50% | ||||||||||||||||||||||||||||||||||||||||||||
| Repayments of principal in 2018 | 3,800,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Repayments of principal after 2018 | 628,800,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Aggregate principal amount | 125,000,000 | 360,000,000 | 300,000,000 | 225,000,000 | 125,000,000 | 416,200,000 | 360,000,000 | 300,000,000 | 225,000,000 | 125,000,000 | 125,000,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Revolving loan outstanding | 40,000,000 | 40,000,000 | 50,000,000 | 37,500,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Repayments of long term debt | 416,199,000 | 0 | 125,000,000 | 0 | 0 | 416,200,000 | 45,000,000 | 416,200,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Notes paid off | 8,800,000 | 8,800,000 | 2,100,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Refinanced amount | 400,000,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Deferred acquisition costs | 5,200,000 | 5,100,000 | 5,300,000 | 5,100,000 | 5,500,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Percentage of the aggregate principal amount redeemed | 35.00% | 35.00% | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Percentage of redemption price before notice | 107.50% | 103.75% | 106.75% | 103.375% | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Percentage of repurchase | 101.00% | 101.00% | 101.00% | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Repayments of debt | 225,000,000 | 42,000,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Par value of senior notes | 104.00% | 104.00% | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Gross proceeds of aggregate principal amount additional issued | 130,000,000 | 130,000,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Repurchase of Convertible senior notes | 122,900,000 | 122,900,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Debt issuance costs | 7,300,000 | 5,400,000 | 7,100,000 | 5,400,000 | 7,600,000 | 11,600,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Debt issuance cost, Net of amortization | 7,100,000 | 7,700,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Tender offer price for each 1000 principal amount | 1,061.98 | 1,061.98 | 1,003.27 | 1,061.98 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Tender Offer Price per Note, Consent Payment | 30.00 | 30.00 | 30.00 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Unit for which the tender offer price is calculated | 1,000 | 1,000.00 | 1,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Payments of debt issuance costs | 7,273,000 | 307,000 | 11,172,000 | 4,859,000 | 504,000 | 453,700,000 | 453,700,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Tender offer costs | 25,800,000 | 25,800,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accrued interest | 11,700,000 | 11,700,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Percentage of redemption price after notice | 104.563% | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Redemption date | Apr. 01, 2014 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| One time debt extinguishment cost | 1,800,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Redemption price | 106.75% | 107.50% | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Redemption price after year three | 103.375% | 103.75% | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Redemption price after year five | 101.00% | 101.00% | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Redemption amount percentage of principal | 35.00% | 35.00% | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Increase in the amount of term loan or revolving credit facility | 50,000,000 | 50,000,000 | 45,000,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Debt premium | 3,700,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Senior Notes | 8,800,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Proceeds from issuance of term note | 225,000,000 | 225,000,000 | 9,600,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Redemption Premium | 400,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Interest Expense | $ 12,039,000 | $ 10,006,000 | $ 47,820,000 | $ 33,542,000 | $ 22,594,000 | $ 400,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||