Goodwill and Intangible Assets - Summary of the Identifiable Intangible Assets Subject for Amortization (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 27,977	$ 15,377
Impairment Charges	0	0
Accumulated Amortization	15,987	14,897
Net Carrying Amount	11,990	480
Non-compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,860	3,860
Impairment Charges	0	0
Accumulated Amortization	3,860	3,822
Net Carrying Amount		38
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	22,978	10,378
Impairment Charges	0	0
Accumulated Amortization	11,187	10,330
Net Carrying Amount	11,791	48
Capitalized Product Development Costs [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,139	1,139
Impairment Charges	0	0
Accumulated Amortization	940	745
Net Carrying Amount	$ 199	$ 394