Intangible Assets, Net - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified					6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014 Whirlaway [Member]	Jun. 30, 2014 VS [Member]	Jun. 30, 2014 VS [Member] Customer Contracts [Member]	Jun. 30, 2014 RFK [Member] Customer Contracts [Member]
Goodwill And Intangible Assets [Line Items]
Indefinite lived intangible asset not subject to amortization	$ 2,724	$ 900	$ 900
Finite-lived intangible assets, net				75		1,749
Finite-lived intangible asset, useful life					10 years	10 years
Amortization of intangible assets					$ 8	$ 175