Goodwill and Intangible Assets (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Goodwill
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,907	$ 1,907
Accumulated Amortization	0	0
Trade name
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	60	60
Accumulated Amortization	0	0
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	906	906
Accumulated Amortization	(304)	(237)
Acquired software
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	234	234
Accumulated Amortization	$ (157)	$ (122)