Debt - Additional Information (Detail) (USD $)					6 Months Ended	1 Months Ended	6 Months Ended				1 Months Ended		6 Months Ended						3 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Dec. 31, 2013 Maximum	Dec. 31, 2013 Minimum	Jun. 30, 2014 Credit Agreement Asset Based Loan Facility	Mar. 31, 2014 Credit Agreement Asset Based Loan Facility Wells Fargo Bank	Jun. 30, 2014 Credit Agreement Asset Based Loan Facility Wells Fargo Bank	Feb. 28, 2014 Credit Agreement Asset Based Loan Facility Wells Fargo Bank	Mar. 31, 2014 Credit Agreement Asset Based Loan Facility Wells Fargo Bank Maximum	Feb. 28, 2014 Credit Agreement Asset Based Loan Facility Wells Fargo Bank Maximum	Mar. 31, 2014 Credit Agreement Asset Based Loan Facility Accordion Feature Wells Fargo Bank	Feb. 28, 2014 Credit Agreement Asset Based Loan Facility Accordion Feature Wells Fargo Bank	Jun. 30, 2014 Credit Agreement Asset Based Loan Facility Federal Funds Rate	Jun. 30, 2014 Credit Agreement Asset Based Loan Facility London inter-bank offered rate	Jun. 30, 2014 Credit Agreement Asset Based Loan Facility London inter-bank offered rate Maximum	Jun. 30, 2014 Credit Agreement Asset Based Loan Facility London inter-bank offered rate Minimum	Jun. 30, 2014 Credit Agreement Asset Based Loan Facility Letter of Credit Wells Fargo Bank	Jun. 30, 2014 Credit Agreement Asset Based Loan Facility Swingline Loans Wells Fargo Bank	Mar. 31, 2014 Credit Agreement Revolving credit facility	Jun. 30, 2014 2018 Notes		Dec. 31, 2013 2018 Notes
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity								$ 225,000,000									$ 10,000,000
Line of credit borrowing									245,000,000	200,000,000	50,000,000	25,000,000
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) $245.0 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% of 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 percentage													0.50%		2.50%	1.75%
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 of 0.75% to 1.50% or (ii) the LIBOR rate plus an applicable margin of 1.75% to 2.50%.
Minimum interest applicable margin														0.75%
Maximum interest applicable margin														1.50%
Leverage Ratio			300.00%
Unsecured note	580,525,000	555,946,000																		400,000,000	[1]	400,000,000	[1]
Line of credit facility utilized percent of total facility amount				87.50%
Fixed charges coverage ratio		110.00%
Write off unamortized costs related to credit facility																			3,200,000
Deferred financing costs capitalized																			$ 3,400,000

[1] The interest rate presented represents the coupon rate on the Company's outstanding $400.0 million aggregate principal amounts of 9.875% Senior Notes due 2018 (the "2018 Notes"), excluding the effects of deferred financing costs, original issue discounts and original issue premiums. Including the impact of these items, the effective interest rate on the 2018 Notes is approximately 11.0%.