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Long-term Obligations - Schedule of Long-term Debt (Details) - USD ($)
12 Months Ended
Dec. 31, 2016
Jan. 31, 2017
Dec. 12, 2016
Dec. 31, 2015
Dec. 24, 2015
Aug. 05, 2015
Mar. 26, 2015
Nov. 20, 2014
Debt Instrument [Line Items]                
Long-term debt $ 388,702,000              
Obligations under capital leases       $ 52,700,000        
Other 75,000     19,000        
Total 438,419,000     381,614,000        
Original issue discount and debt issuance costs on Senior Secured Notes (9,923,000)     (9,738,000)        
Total long-term obligations $ 428,496,000     371,876,000        
11.0% Senior Secured Notes, due in 2019                
Debt Instrument [Line Items]                
Interest rate (as a percent) 11.00%             11.00%
Aggregate principal amount         $ 2,000,000.0 $ 5,000,000.0 $ 50,000,000 $ 250,000,000
11.0% Senior Secured Notes, due in 2019 | Secured Debt                
Debt Instrument [Line Items]                
Long-term debt $ 307,000,000     307,000,000        
11.0% Senior Secured Bridge Loan, due in 2019 | Secured Debt                
Debt Instrument [Line Items]                
Long-term debt $ 35,000,000     0        
Interest rate (as a percent) 11.00%              
Aggregate principal amount $ 35,000,000              
GMSL                
Debt Instrument [Line Items]                
Obligations under capital leases 49,717,000     52,697,000        
GMSL | Notes payable and revolving lines of credit, various maturity dates                
Debt Instrument [Line Items]                
Long-term debt 17,522,000     0        
GMSL | Note Payable Collateralized by Assets                
Debt Instrument [Line Items]                
Long-term debt $ 3,026,000     5,260,000        
Basis spread on variable rate (as a percent) 3.65%              
DBM Global | Note Payable Collateralized by Equipment                
Debt Instrument [Line Items]                
Long-term debt $ 9,439,000     14,378,000        
Basis spread on variable rate (as a percent) 4.00%              
DBM Global | SHE Line of Credit | Line of Credit                
Debt Instrument [Line Items]                
Long-term debt $ 0     1,600,000        
DBM Global | Line of Credit Collateralized by Assets | Line of Credit                
Debt Instrument [Line Items]                
Long-term debt $ 0     0        
Basis spread on variable rate (as a percent) 3.00%              
ANG | Note Payable Collateralized by Assets                
Debt Instrument [Line Items]                
Interest rate (as a percent) 5.50%              
ANG | 5.5% Term Loan, due in 2018                
Debt Instrument [Line Items]                
Long-term debt $ 501,000     660,000        
ANG | Notes, Due in 2023, 3.0%                
Debt Instrument [Line Items]                
Long-term debt $ 6,496,000     0        
Basis spread on variable rate (as a percent) 3.00%              
ANG | Notes Due 2023, 4.7%                
Debt Instrument [Line Items]                
Long-term debt $ 4,439,000     0        
Interest rate (as a percent) 4.70%   4.70%          
Aggregate principal amount     $ 4,500,000.0          
ANG | Notes Due 2022, 4.3%                
Debt Instrument [Line Items]                
Long-term debt $ 2,408,000     0        
Interest rate (as a percent) 4.30%              
ANG | Seller Note Due 2022, 4.25%                
Debt Instrument [Line Items]                
Long-term debt $ 2,796,000     $ 0        
Interest rate (as a percent) 4.25%              
Subsequent Event | 11.0% Senior Secured Notes, due in 2019 | Secured Debt                
Debt Instrument [Line Items]                
Interest rate (as a percent)   11.00%            
Aggregate principal amount   $ 55,000,000.0            
Subsequent Event | ANG | Notes Due 2022 | Senior Notes                
Debt Instrument [Line Items]                
Interest rate (as a percent)   4.50%