Goodwill and Other Intangible Assets - Schedule of Carrying Value and Accumulated Amortization of Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 4,552	$ 4,366
Accumulated Amortization	2,330	1,962
Customer list
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	4,012	3,993
Accumulated Amortization	2,048	1,719
Non-Compete Agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	270	103
Accumulated Amortization	103	72
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	270	270
Accumulated Amortization	$ 179	$ 171