Debt - Additional Information (Detail) (USD $)
 12 Months Ended 0 Months Ended 12 Months Ended 0 Months Ended 0 Months Ended 0 Months Ended 3 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Nov. 05, 2012
Apr. 10, 2012
Dec. 31, 2013
Prior to April 15, 2015
Dec. 31, 2013
Minimum
Dec. 31, 2013
Maximum
Sep. 30, 2013
Revolving credit facility
Nov. 05, 2012
2018 Notes
Apr. 10, 2012
2018 Notes
Dec. 31, 2013
2018 Notes
Dec. 31, 2012
2018 Notes
Dec. 31, 2013
Credit Agreement
Asset Based Loan Facility
Wells Fargo Bank
Dec. 31, 2013
Credit Agreement
Asset Based Loan Facility
Letter of Credit
Wells Fargo Bank
Dec. 31, 2013
Credit Agreement
Asset Based Loan Facility
Swingline Loans
Wells Fargo Bank
Feb. 03, 2014
Credit Agreement
Subsequent Event
Asset Based Loan Facility
Feb. 03, 2014
Credit Agreement
Subsequent Event
Asset Based Loan Facility
Wells Fargo Bank
Feb. 03, 2014
Credit Agreement
Subsequent Event
Asset Based Loan Facility
Wells Fargo Bank
Maximum
Feb. 03, 2014
Credit Agreement
Subsequent Event
Asset Based Loan Facility
Federal Funds Rate
Feb. 03, 2014
Credit Agreement
Subsequent Event
Asset Based Loan Facility
London inter-bank offered rate
Feb. 03, 2014
Credit Agreement
Subsequent Event
Asset Based Loan Facility
London inter-bank offered rate
Minimum
Feb. 03, 2014
Credit Agreement
Subsequent Event
Asset Based Loan Facility
London inter-bank offered rate
Maximum
Feb. 03, 2014
Credit Agreement
Subsequent Event
Asset Based Loan Facility
Accordion Feature
Wells Fargo Bank
Apr. 10, 2012
New Revolving Credit Facility
Nov. 30, 2012
Amended Revolving Credit Facility
Dec. 31, 2013
Amended Revolving Credit Facility
Nov. 30, 2012
Amended Revolving Credit Facility
London inter-bank offered rate
Nov. 30, 2012
Amended Revolving Credit Facility
London inter-bank offered rate
Minimum
Nov. 30, 2012
Amended Revolving Credit Facility
London inter-bank offered rate
Maximum
Nov. 30, 2012
Amended Revolving Credit Facility
Federal Reserve Bank of New York
Nov. 30, 2012
Amended Revolving Credit Facility
Prime Rate
Minimum
Nov. 30, 2012
Amended Revolving Credit Facility
Prime Rate
Maximum
Dec. 31, 2013
Amended Revolving Credit Facility
Letter of Credit
Dec. 31, 2013
Amended Revolving Credit Facility
Swingline Loans
Mar. 31, 2014
Scenario, Forecast
Credit Agreement
Revolving credit facility
Debt Instrument [Line Items]                                                                      
Aggregate principal amount of debt     $ 150,000,000 $ 250,000,000         $ 150,000,000 $ 250,000,000 $ 400,000,000                                                
Debt, interest rate 3.30%               9.875% 9.875% 9.875% [1]                             4.61% [2]                  
Debt instrument maturity year                   2018                                                  
Net proceeds, after deducting underwriters and offering expenses                 147,000,000 240,800,000                                                  
Write off unamortized costs related to credit facility                   2,600,000                                                 3,000,000
Maximum amount as percentage of aggregate principal amount of outstanding debt that can be redeemed         35.00%                                                            
Debt instrument redemption price principal percentage         109.875%                                                            
Line of credit borrowing                                   200,000,000         25,000,000 150,000,000 325,000,000                    
Debt, maturity date                                               Apr. 10, 2017 Nov. 30, 2017                    
Line of credit, allowable amount to increase in additional borrowing                                               100,000,000                      
Line of credit, allowable amount to increase in additional borrowing                                                 100,000,000                    
Line of Credit Facility, Maximum Borrowing Capacity                           10,000,000     225,000,000               425,000,000                    
Interest rate percentage                                     0.50%   1.75% 2.50%         1.00% 2.50% 3.75% 0.50% 1.50% 2.75%      
Line of credit available borrowing capacity                                                   177,000,000             20,000,000 30,000,000  
Lender and third party fees               600,000                                                      
ABL Facility Maturity Date, Scenario One                                             5 years                        
ABL Facility Maturity Date, Scenario Two                                 90 days                                    
ABL Facility Borrowing Terms                         The terms of the ABL Facility limit the amount the Company can borrow to the lesser of (a) $200.0 million or (b) 85% of the amount of the Company's eligible accounts receivable plus the lower of (i) 95% of the net book value of the Company's eligible rental equipment, tractors and trailers, and (ii) 85% times the appraised net orderly liquidation value of the Company's eligible rental equipment, tractors and trailers, less any customary reserves.                                            
Swing line facility sub-limit borrowing capacity of total facility size, percentage                             10.00%                                        
Interest rate term                               I) the greater of (a) the prime lending rate as publicly announced by Wells Fargo or (b) the Federal Funds rate plus 1/2% or (c) the one month LIBOR plus one percent plus an applicable margin percentage of 0.75% to 1.50% or (ii) the LIBOR rate plus the applicable margin of 1.75% to 2.50%.                                      
Minimum interest applicable margin                                       0.75%                              
Maximum interest applicable margin                                       1.50%                              
Leverage Ratio           1.0 3.0                                                        
Unsecured note 555,946,000 567,037,000                 400,000,000 [1] 400,000,000 [1]                                              
Line of credit facility utilized percent of total facility amount           87.50%                                                          
Fixed charges coverage ratio 1.1                                                                    
Fixed charges coverage ratio 1.0                                                                    
Deferred financing costs capitalized                                                                     $ 3,500,000
[1] The interest rate presented represents the coupon rate on the Company's outstanding $400 million aggregate principal amounts of 9.875% Senior Notes due 2018 (the "2018 Notes"), excluding the effect of deferred financing costs, original issue discounts and original issue premiums. Including the effect of these items, the effective interest rate on the 2018 Notes is approximately 11.0%.
[2] The interest rate presented represents the interest rate on the $325.0 million senior secured revolving credit facility (the "Revolving Credit Facility") at December 31, 2013.