Debt And Financing (Details) | Aug. 05, 2014USD ($) | Feb. 13, 2014USD ($) | Jan. 31, 2014USD ($)$ / sharesshares | Dec. 31, 2015USD ($)$ / sharesshares | Dec. 31, 2014USD ($)shares | Dec. 31, 2013USD ($)shares | Dec. 31, 2011USD ($) | Jul. 22, 2011USD ($) | Feb. 11, 2010USD ($) |
Debt Instrument [Line Items] | | | | | | | | | |
Contribution rate of subsidiaries to funds | | | | 25.00% | | | | | |
Proceeds from Issuance or Sale of Equity | | | $ 250,000,000 | $ 0 | $ 250,000,000 | $ 0 | | | |
Repayment of long-term debt | | | | 16,700,000 | 892,700,000 | 9,200,000 | | | |
Proceeds from Issuance of Long-term Debt | | | | 0 | 696,800,000 | 300,000 | | | |
Cash and Cash Equivalents, at Carrying Value | | | | 173,800,000 | 171,100,000 | 176,300,000 | $ 208,700,000 | | |
Long-term Debt, Maturities, Repayments of Principal after Year Five | | | | 235,700,000 | | | | | |
Premium/(Discount), Debt | | | | (4,300,000) | (6,300,000) | | | | |
Long-term debt | | | | 1,077,600,000 | 1,109,900,000 | | | | |
Current maturities | | | | (15,900,000) | (31,100,000) | | | | |
Debt Instrument, Face Amount, Excluding Current Maturities | | | | 1,066,000,000 | 1,084,500,000 | | | | |
Debt Instrument, Unamortized Discount (Premium), Net, Noncurrent Maturities | | | | 4,300,000 | 5,700,000 | | | | |
Accelerated amortization of the discount | | | | 2,100,000 | 27,500,000 | 7,700,000 | | | |
Long-term debt, less current portion | | | | (1,061,700,000) | (1,078,800,000) | | | | |
Gains (Losses) on Extinguishment of Debt | | | | (600,000) | 11,200,000 | 0 | | | |
Extinguishment of Debt, Acceleration of Net Premiums on Old Debt | | | | | 16,300,000 | | | | |
Expense Related to Fair Value of Incremental Shares Converted | | | | 600,000 | 5,100,000 | | | | |
Aggregate principal amount | | | | 1,081,900,000 | 1,116,200,000 | | | | |
Payments of Financing Costs | | | | | 43,800,000 | | | | |
Capitalized Financing Costs | | | | | 26,700,000 | | | | |
Payments of Stock Issuance Costs | | | | $ 0 | $ 17,100,000 | 0 | | | |
Common stock, shares authorized | shares | | | | 95,000,000 | 95,000,000 | | | | |
Previous maximum ownership percentage | | | | 19.99% | 19.99% | | | | |
Amortization of Beneficial Conversion Feature on Preferred Stock | | | | $ 0 | $ 18,100,000 | $ 0 | | | |
Managed Accessibility | | | | 209,300,000 | 198,200,000 | | | | |
10 percent of Borrowing Base | | | | 44,200,000 | | | | | |
10 percent of line cap | | | | 45,000,000 | | | | | |
Maximum [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Right to increase New Term Loan | | | | 250,000,000 | | | | | |
Book Value | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Fair value of long term debt | | | | 1,077,600,000 | 1,109,900,000 | | | | |
Fair Value | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Fair value of long term debt | | | | 979,600,000 | $ 1,104,400,000 | | | | |
Secured CDA [Domain] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Long-term debt | | $ 51,000,000 | | | | | | | |
ABL Facility | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Uncommitted Accordion | | | | 100,000,000 | | | | | |
ABL Facility | Maximum [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Debt Instrument, Covenant, Events of Default, Final Unpaid Judgment Against Term Guarantors | | | | 30,000,000 | | | | | |
ABL Facility | Minimum [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Debt Instrument, Covenant, Events of Default, Cross Default | | | | 30,000,000 | | | | | |
Debt Instrument, Covenant, liquidity | | | | 100,000,000 | | | | | |
Debt Instrument, Covenant, availability | | | | $ 67,500,000 | | | | | |
Debt Instrument, Consolidated Fixed Coverage Ratio | | | | 1.10 | | | | | |
2014 Term Loan [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Debt Instrument, Total Leverage Ratio | | 3.25 | | | | | | | |
Prepayment percent of excess cash flow | | | | 75.00% | | | | | |
Debt Instrument, Covenant, Mandatory Prepayment Terms, Percentage of Excess Cash Flow, Ratio Range Between 4.00 and 3.50 to 1.00 | | | | 50.00% | | | | | |
Debt Instrument, Covenant, Mandatory Prepayment Terms, Percentage of Excess Cash Flow When Ratio is Less or Equal 3.00 to 1.00 | | | | 0.00% | | | | | |
Debt Instrument, Covenant, Mandatory Prepayment Terms, Percentage of Excess Cash Flow, Ratio Range Between 3.00 and 3.50 to 1.00 | | | | 25.00% | | | | | |
Debt Instrument, Covenant, Mandatory Prepayment Terms, Percentage of Net Cash Proceeds from All Sales | | | | 100.00% | | | | | |
Prepayment percent of cash proceeds from debt issuance | | | | 100.00% | | | | | |
2014 Term Loan [Member] | Maximum [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Debt Instrument, Covenant, Events of Default, Final Unpaid Judgment Against Term Guarantors | | | | $ 30,000,000 | | | | | |
2014 Term Loan [Member] | Minimum [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Debt Instrument, Covenant, Events of Default, Cross Default | | | | 30,000,000 | | | | | |
A&R CDA | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Long-term debt | | | | $ 124,200,000 | | | | | |
Amended and Restated Contribution Deferral Agreement [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Stated interest rate, minimum | | | | | 3.25% | | | | |
Stated interest rate, floor | | | | | 18.25% | | | | |
2014 Term Loan | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Interest rate | | | | 8.25% | 8.25% | | | | |
Premium/(Discount), Debt | | | | $ (4,300,000) | $ (5,700,000) | | | | |
Long-term debt | | | | 681,700,000 | 687,300,000 | | | | |
Debt Instrument, Gross, Current Maturities | | | | 7,000,000 | 7,000,000 | | | | |
Current maturities | | | | (7,000,000) | (7,000,000) | | | | |
Premium/(Discount), Current Maturities | | | | $ 0 | $ 0 | | | | |
Effective Interest Rate | | | | 8.45% | 8.45% | | | | |
Aggregate principal amount | | | | $ 686,000,000 | $ 693,000,000 | | | | |
2014 Term Loan | Book Value | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Fair value of long term debt | | | | 681,700,000 | 687,300,000 | | | | |
2014 Term Loan | Fair Value | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Fair value of long term debt | | | | 594,600,000 | 685,400,000 | | | | |
2014 Term Loan | 2014 Financing [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Principal amount issued | | | | 700,000,000 | | | | | |
2014 Term Loan [Member] | 2014 Financing [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Debt Instrument, Face Amount Discount Percent | | 1.00% | | | | | | | |
Debt Instrument, Quarterly Installments as Percent of Principal Amount | | 1.00% | | | | | | | |
Line of Credit [Member] | Book Value | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Fair value of long term debt | | | | 0 | 0 | | | | |
Line of Credit [Member] | Fair Value | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Fair value of long term debt | | | | 0 | 0 | | | | |
Line of Credit [Member] | ABL Facility | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Principal amount issued | | | | $ 175,000,000 | | | | | |
Borrowing base percent of net eligible receivables | | | | 85.00% | | | | | |
Borrowing Base, Percent Of Borrowing Base Cash | | | | 100.00% | | | | | |
Borrowing Base, Percent Of Deferred Revenue Liability | | | | 85.00% | | | | | |
Debt Instrument, Covenant, Percent Of Collateral Line Cap | | | | 10.00% | | | | | |
Interest rate | | | | 2.50% | | | | | |
Debt Instrument, Consolidated Fixed Coverage Ratio | | | | 1.10 | | | | | |
Number of Consecutive Calendar Days 10 Percent of Collateral Cap is Maintained Available | | | | 30 days | | | | | |
Borrowing Base | | | | $ 441,700,000 | 445,500,000 | | | | |
Premium/(Discount), Debt | | | | 0 | 0 | | | | |
Long-term debt | | | | 0 | 0 | | | | |
Line Of Credit Facility, Total Cash and Availability | | | | 79,700,000 | 71,200,000 | | | | |
Line Of Credit Facility, Total Able to Be Drawn | | | | 35,500,000 | 27,100,000 | | | | |
Aggregate principal amount | | | | $ 0 | 0 | | | | |
Line of Credit [Member] | ABL Facility | Minimum [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Debt Instrument, Covenant, Percent Of Collateral Line Cap | | | | 15.00% | | | | | |
Line of Credit [Member] | ABL facility - Term B [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Principal amount issued | | | | $ 225,000,000 | | | | | |
ABL Facility | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Basis spread on variable rate | | | | 2.50% | | | | | |
Letter of Credit, Fees as Percentage of Stated Amount | | | | 0.125% | | | | | |
ABL Facility | 2014 Financing [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Principal amount issued | | $ 450,000,000 | | | | | | | |
Senior Notes | Book Value | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Fair value of long term debt | | | | $ 0 | 17,100,000 | | | | |
Senior Notes | Fair Value | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Fair value of long term debt | | | | 0 | 17,700,000 | | | | |
Senior Notes | Senior B Notes [Domain] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Principal amount issued | | | | $ 100,000,000 | | | | | |
Interest rate | | | | 10.00% | | | | | |
Series B Notes Outstanding Principal and Interest | | | | 17,900,000 | | | | | |
Debt Instrument, Convertible, Conversion Price | $ / shares | | | | $ 18 | | | | | |
Exchange/conversion of Series B Notes to common stock | | | | $ 1,200,000 | | | | | |
Issuance of equity upon conversion of 6% convertible senior notes | shares | | | | 75,900 | | | | | |
Debt interest expense | | | | $ 400,000 | | | | | |
Make whole premium | | | | 200,000 | | | | | |
Accelerated amortization of the discount | | | | $ 200,000 | | | | | |
Cash Repayment to Series B Notes holders | | | | 300,000 | | | | | |
Senior Notes | Senior A Notes [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Principal amount issued | | | | | | | | $ 140,000,000 | |
Interest rate | | | | 10.00% | | | | | |
Senior Notes | Senior B Notes | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Conversion price, future period | $ / shares | | | $ 15 | | | | | | |
Debt Instrument, Convertible, Conversion Ratio, Future Period | | | | 0.0539567 | | | | | |
Debt Instrument, Convertible, Conversion Ratio | | | | 0.0566695 | | | | | |
Exchange/conversion of Series B Notes to common stock | | 50,600,000 | | | | | | | |
Make Whole Interest Expense | | | | | $ 8,000,000 | | | | |
Senior Notes | 6% Senior Convertible Notes | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Principal amount issued | | | | | | | | | $ 70,000,000 |
Interest rate | | | | 6.00% | | | | | |
Senior Notes | Unsecured Second A&R CDA | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Exchange/conversion of Series B Notes to common stock | | 50,600,000 | | | | | | | |
Long-term debt | | 73,200,000 | | | | | | | |
Senior Notes | Series B Notes | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Interest rate | | | | | 10.00% | | | | |
Premium/(Discount), Debt | | | | | $ (600,000) | | | | |
Long-term debt | | | | | 17,100,000 | | | | |
Debt Instrument, Gross, Current Maturities | | | | | 17,700,000 | | | | |
Current maturities | | | | | (17,100,000) | | | | |
Premium/(Discount), Current Maturities | | | | | $ (600,000) | | | | |
Effective Interest Rate | | | | | 25.60% | | | | |
Aggregate principal amount | | | | | $ 17,700,000 | | | | |
Lease Financing Obligation | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Long-term Debt, Maturities, Repayments of Principal after Year Five | | | | $ 235,700,000 | | | | | |
Aggregate principal amount | | | | 278,000,000 | | | | | |
Long Term Debt, Principal Cash Obligation, After Year Five | | | | 11,600,000 | | | | | |
Net Book Value Of Assets | | | | $ 224,100,000 | | | | | |
Secured Second A&R CDA [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Stated interest rate, minimum | | | | 3.30% | 3.30% | | | | |
Stated interest rate, floor | | | | 18.30% | 18.30% | | | | |
Premium/(Discount), Debt | | | | $ 0 | $ 0 | | | | |
Long-term debt | | | | $ 44,700,000 | $ 47,000,000 | | | | |
Effective Interest Rate | | | | 7.30% | 7.30% | | | | |
Aggregate principal amount | | | | $ 44,700,000 | $ 47,000,000 | | | | |
Letter of Credit [Member] | ABL Facility | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Letters of Credit Outstanding, Amount | | | | 362,000,000 | $ 374,300,000 | | | | |
Letter of Credit [Member] | Amended And Restated Credit Agreement [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Capacity | | | | $ 437,000,000 | | | | | |
Lease financing obligations | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Stated interest rate, minimum | | | | 10.00% | 10.00% | | | | |
Stated interest rate, floor | | | | 18.20% | 18.20% | | | | |
Premium/(Discount), Debt | | | | $ 0 | $ 0 | | | | |
Long-term debt | | | | 278,000,000 | 285,100,000 | | | | |
Debt Instrument, Gross, Current Maturities | | | | 8,900,000 | 6,800,000 | | | | |
Current maturities | | | | (8,900,000) | (6,800,000) | | | | |
Premium/(Discount), Current Maturities | | | | $ 0 | $ 0 | | | | |
Effective Interest Rate | | | | 12.00% | 12.00% | | | | |
Aggregate principal amount | | | | $ 278,000,000 | $ 285,100,000 | | | | |
Lease financing obligations | Book Value | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Fair value of long term debt | | | | 278,000,000 | 285,100,000 | | | | |
Lease financing obligations | Fair Value | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Fair value of long term debt | | | | 282,900,000 | 282,200,000 | | | | |
Other | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Premium/(Discount), Debt | | | | | 0 | | | | |
Long-term debt | | | | | 200,000 | | | | |
Debt Instrument, Gross, Current Maturities | | | | | 200,000 | | | | |
Current maturities | | | | | (200,000) | | | | |
Premium/(Discount), Current Maturities | | | | | 0 | | | | |
Aggregate principal amount | | | | | 200,000 | | | | |
Other | Book Value | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Fair value of long term debt | | | | 117,900,000 | 120,400,000 | | | | |
Other | Fair Value | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Fair value of long term debt | | | | $ 102,100,000 | $ 119,100,000 | | | | |
Unsecured Second A&R CD [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Stated interest rate, minimum | | | | 3.30% | 3.30% | | | | |
Stated interest rate, floor | | | | 18.30% | 18.30% | | | | |
Premium/(Discount), Debt | | | | $ 0 | $ 0 | | | | |
Long-term debt | | | | $ 73,200,000 | $ 73,200,000 | | | | |
Effective Interest Rate | | | | 7.30% | 7.30% | | | | |
Aggregate principal amount | | | | $ 73,200,000 | $ 73,200,000 | | | | |
Restructured Term Loan [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Long-term Debt, Maturities, Repayments of Principal after Year Five | | | | 0 | | | | | |
Aggregate principal amount | | | | 686,000,000 | | | | | |
Restructured Term Loan [Member] | Amended And Restated Credit Agreement [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Principal amount issued | | | | $ 307,400,000 | | | | | |
2014 Financing [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Proceeds from Issuance of Common Stock | | 215,000,000 | | | | | | | |
Increase (Decrease) in Restricted Cash | | 90,000,000 | | | | | | | |
Uses of Funds | | 1,040,000,000 | | | | | | | |
Non Cash Sources of Funds | | 174,800,000 | | | | | | | |
Non Cash Uses of Funds | | 174,800,000 | | | | | | | |
2014 Financing [Member] | 6% Notes [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Repayment of long-term debt | | 71,500,000 | | | | | | | |
2014 Financing [Member] | ABL Facility | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Increase (Decrease) in Restricted Cash | | 92,000,000 | | | | | | | |
2014 Financing [Member] | ABL Facility | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Repayment of long-term debt | | 326,000,000 | | | | | | | |
2014 Financing [Member] | Series A Note [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Repayment of long-term debt | $ 89,600,000 | | $ 90,900,000 | | | | | | |
Future Repayments of Series A Notes | $ 89,600,000 | | $ 89,600,000 | | | | | | |
2014 Financing [Member] | 2014 ABL Facility Credit Agreement [Member] [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Proceeds from Issuance of Long-term Debt | | 0 | | | | | | | |
Cash, Period Increase (Decrease) | | 16,500,000 | | | | | | | |
2014 Financing [Member] | Restructured Term Loan [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Repayment of long-term debt | | 299,700,000 | | | | | | | |
2014 Financing [Member] | 2014 Term Loan | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Proceeds from Issuance of Long-term Debt | | $ 700,000,000 | | | | | | | |
Period Through March 31, 2014 [Member] | ABL Facility | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Commitment fee percentage | | | | 0.25% | | | | | |
Period After March 31. 2014 [Member] | ABL Facility | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Commitment fee percentage | | | | 0.375% | | | | | |
Average Revolver Usage | | | | 50.00% | | | | | |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage, If Average Revolver Usage Greater Than 50 Percent | | | | 0.25% | | | | | |
One Month LIBOR [Member] | 2014 Term Loan [Member] | 2014 Financing [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Basis spread on variable rate | | | | 1.00% | | | | | |
One Month LIBOR [Member] | ABL Facility | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Basis spread on variable rate | | | | 1.00% | | | | | |
LIBOR | 2014 Term Loan [Member] | 2014 Financing [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Variable rate basis, option two, minimum variable rate basis | | | | 1.00% | | | | | |
Basis spread on variable rate | | | | 6.25% | | | | | |
Debt Instrument, Basis Spread on Variable Rate, Reduction When Total Leverage Ratio Is Less Than 3.25 | | | | 0.25% | | | | | |
LIBOR | ABL Facility | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Debt Instrument, Total Leverage Ratio | | | | 2.50 | | | | | |
Debt Instrument, Basis Spread on Variable Rate, Reduction When Total Leverage Ratio is Less Than 2.50 to 1.00 | | | | 0.25% | | | | | |
Federal Funds Rate [Member] | 2014 Term Loan [Member] | 2014 Financing [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Basis spread on variable rate | | | | 0.50% | | | | | |
Federal Funds Rate [Member] | ABL Facility | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Basis spread on variable rate | | | | 0.50% | | | | | |
Higher of London Interbank Offer Rate or 1.00% [Member] | 2014 Term Loan [Member] | 2014 Financing [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Basis spread on variable rate | | | | 7.25% | | | | | |
50 Percent Of Excess Cash Flow Prepayment [Member] | 2014 Term Loan [Member] | Maximum [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Debt Instrument, Total Leverage Ratio | | | | 3.50 | | | | | |
50 Percent Of Excess Cash Flow Prepayment [Member] | 2014 Term Loan [Member] | Minimum [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Debt Instrument, Total Leverage Ratio | | | | 4 | | | | | |
25 Percent Of Excess Cash Flow Prepayment [Member] | 2014 Term Loan [Member] | Maximum [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Debt Instrument, Total Leverage Ratio | | | | 3 | | | | | |
25 Percent Of Excess Cash Flow Prepayment [Member] | 2014 Term Loan [Member] | Minimum [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Debt Instrument, Total Leverage Ratio | | | | 3.50 | | | | | |
0 Percent Of Excess Cash Flow Prepayment [Member] | 2014 Term Loan [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Debt Instrument, Total Leverage Ratio | | | | 3 | | | | | |
Common Stock [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Stock Issued During Period, Shares, New Issues | shares | | | 14,333,334 | 0 | 14,333,000 | 0 | | | |
Issuance of equity upon conversion of 6% convertible senior notes | shares | | | | 995,000 | 3,471,000 | 1,929,000 | | | |
Preferred Stock [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Stock Issued During Period, Shares, New Issues | shares | | | 583,334 | | | | | | |
Issuance of equity upon conversion of 6% convertible senior notes | shares | | | | 0 | 0 | 0 | | | |
Credit Agreement Amendment, September 2014 [Member] | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | |
Debt Instrument, Total Leverage Ratio | | | | 3.25 | | | | | |