Quarterly report pursuant to Section 13 or 15(d)

Financing Arrangements - Summary of Outstanding Indebtedness (Details)

v3.19.1
Financing Arrangements - Summary of Outstanding Indebtedness (Details) - USD ($)
 3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Feb. 28, 2019
Dec. 31, 2018
Jan. 06, 2017
Debt Instrument [Line Items]          
Debt instrument, face amount $ 793,752,000     $ 774,797,000  
Unamortized bond discounts, fair value adjustments and issue costs, net (63,234,000)     (65,186,000)  
Total carrying value of debt 730,518,000     709,611,000  
Less: current portion, net (38,190,000)     (22,673,000)  
Total non-current 692,328,000     686,938,000  
Long-term debt 793,752,000        
Paid-in-Kind interest converted to principal 9,507,000 $ 0      
Second Lien Credit Agreement          
Debt Instrument [Line Items]          
Debt instrument, face amount 167,957,000     158,450,000  
Paid-in-Kind interest converted to principal 9,500,000        
Term loan facility          
Debt Instrument [Line Items]          
Debt instrument, face amount 475,000,000     478,125,000  
Revolving Credit Facility          
Debt Instrument [Line Items]          
Debt instrument, face amount 50,915,000     54,015,000  
Convertible senior notes          
Debt Instrument [Line Items]          
Debt instrument, face amount 82,500,000     82,500,000  
Total carrying value of debt $ 82,500,000        
Stated interest rate 2.75%        
Long-term debt $ 70,600,000     70,400,000  
Equity component of convertible debt 13,000,000        
Subordinated Debt          
Debt Instrument [Line Items]          
Debt instrument, face amount 167,957,000     158,450,000  
Other debt          
Debt Instrument [Line Items]          
Debt instrument, face amount 17,380,000     $ 1,707,000  
Line of Credit          
Debt Instrument [Line Items]          
Letters of credit outstanding 4,700,000        
Equipment Financing          
Debt Instrument [Line Items]          
Other long term debt 8,500,000        
Penny Warrants | Second Lien Credit Agreement          
Debt Instrument [Line Items]          
Equity component of convertible debt 14,900,000        
Market Warrants | Second Lien Credit Agreement          
Debt Instrument [Line Items]          
Equity component of convertible debt 9,300,000        
Revolving Credit Facility | Line of Credit          
Debt Instrument [Line Items]          
Maximum borrowing capacity         $ 85,000,000.0
Line of credit, available balance 29,900,000        
Letters of Credit | Line of Credit          
Debt Instrument [Line Items]          
Maximum borrowing capacity         $ 15,000,000.0
Letters of credit outstanding 4,200,000        
2017 Credit Agreement | Other debt          
Debt Instrument [Line Items]          
Debt instrument, face amount 29,900,000        
2017 Credit Agreement | Line of Credit          
Debt Instrument [Line Items]          
Letters of credit outstanding 4,200,000        
Wireless Maritime Services          
Debt Instrument [Line Items]          
Payable to related party $ 7,400,000   $ 7,400,000