Annual report pursuant to Section 13 and 15(d)

Chapter 11 Cases - Narrative (Details)

v3.19.1
Chapter 11 Cases - Narrative (Details) - USD ($)
 12 Months Ended
Dec. 12, 2018
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 13, 2018
Jan. 22, 2014
Jul. 30, 2013
Plan of Reorganization [Abstract]              
7.50% Notes, pro rata share of common stock, percent         34.30%    
7.50% Notes, pro rata share of new second lien term loan, amount         $ 92,600,000    
7.50% Notes, pro rata share of subscription rights, percent         24.30%    
6.75% Notes, pro rata share of common stock, percent         62.90%    
6.75% Notes, pro rata share of new second lien term loan, amount         $ 117,400,000    
6.75% Notes, pro rata share of subscription rights, percent         38.90%    
Preferred Holders, pro rata share of common stock, percent         1.10%    
Preferred Holders, pro rata share of subscription rights, percent         14.70%    
Preferred Holders, pro rata share of warrants, percent         40.00%    
Preferred Holders, pro rata share of new common stock purchasable under warrants, percent         13.50%    
Common Holders, pro rata share of common stock, percent         1.65%    
Common Holders, pro rata share of subscription rights, percent         22.10%    
Common Holders, pro rata share of warrants, percent         60.00%    
Debtor-in-Possession Financing [Abstract]              
Aggregate principal amount under Debtor-in-Possession Financing         $ 50,000,000.0    
DIP Financing, percent of aggregate net amount of eligible domestic accounts receivable         85.00%    
DIP Financing, percent of aggregate net amount of eligible domestic accounts receivable calculation, percent of net book value of eligible rental equipment         90.00%    
DIP Financing, percent of aggregate net amount of eligible domestic accounts receivable calculation, percent of net equipment liquidation value of eligible rental equipment         60.00%    
DIP Financing, percent of aggregate net amount of eligible domestic accounts receivable calculation, amount less reserve for items stated in DIP term sheet         $ 37,500,000    
Debtor in possession financing   $ 10,000,000.0 $ 0        
DIP Financing, amount available   40,000,000.0          
Increase in aggregate principal amount $ 100,000,000.0            
Backstop commitment agreement, aggregate purchase price 95,000,000.0            
Payments of cash put option premium on backstop commitment agreement $ 7,600,000            
Percent of common stock to be remitted upon Backstop Commitment Agreement occurrence 3.40%            
Pre-petition restructuring charges   21,820,000 0 $ 0      
(Gain) loss on debt modification   9,789,000 0        
Liabilities subject to compromise   $ 600,996,000 $ 0        
Standby Letters of Credit              
Debtor-in-Possession Financing [Abstract]              
Aggregate principal amount under Debtor-in-Possession Financing         20,000,000.0    
Standby and Commercial Letters of Credit              
Debtor-in-Possession Financing [Abstract]              
Aggregate principal amount under Debtor-in-Possession Financing         30,000,000.0    
Standby and Commercial Letters of Credit | Second Lien Exit Facility              
Debtor-in-Possession Financing [Abstract]              
Debtor in possession financing         $ 210,000,000.0    
7.50% Notes              
Restructuring Cost and Reserve [Line Items]              
Debt instrument fixed interest rate   7.50%         7.50%
Debtor-in-Possession Financing [Abstract]              
Liabilities subject to compromise, long-term debt   $ 225,000,000.0          
6.75% Notes              
Restructuring Cost and Reserve [Line Items]              
Debt instrument fixed interest rate   6.75%       6.75%  
Debtor-in-Possession Financing [Abstract]              
Liabilities subject to compromise, long-term debt   $ 360,000,000.0          
Senior Notes              
Debtor-in-Possession Financing [Abstract]              
Liabilities subject to compromise, long-term debt   15,996,000          
Contractual interest expense   41,200,000          
Interest expense in excess of contractual interest expense   $ 39,100,000          
Series A Mandatory Convertible Preferred Stock              
Restructuring Cost and Reserve [Line Items]              
Preferred stock, stated interest rate   7.25% 7.25%