Intangible Assets, Net - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified			3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014 Customer Contracts [Member]	Mar. 31, 2014 Whirlaway [Member]
Goodwill And Intangible Assets [Line Items]
Indefinite lived intangible asset not subject to amortization	$ 975	$ 900		$ 900
Finite-Lived Intangible Assets, Net			75
Finite-Lived Intangible Asset, Useful Life			10 years
Amortization of Intangible Assets			$ 8