Goodwill and Other Intangible Assets - Schedule of Carrying Value and Accumulated Amortization of Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 4,616	$ 4,066
Accumulated Amortization	1,641	1,268
Customer list
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,993	3,693
Accumulated Amortization	1,389	1,067
Non-Compete Agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	353	103
Accumulated Amortization	87	43
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	270	270
Accumulated Amortization	$ 165	$ 158