Goodwill and Other Intangible Assets - Schedule of Carrying Value and Accumulated Amortization of Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 12,365	$ 7,316
Accumulated Amortization	4,236	3,466
Customer Lists [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	9,391	4,801
Accumulated Amortization	3,463	3,066
Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,252	1,793
Accumulated Amortization	451	202
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	452	452
Accumulated Amortization	118	0
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	270	270
Accumulated Amortization	$ 204	$ 198