Goodwill and Other Intangibles - Summary of Goodwill and Other Intangible Assets Acquired (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted-Average Period (In Years)	4 years 10 months 24 days	7 years 7 months 6 days
Gross Carrying Value	$ 4,392	$ 4,401
Accumulated Amortization	(1,796)	(1,394)
Net Carrying Value	$ 2,596	$ 3,007
Lease Related Intangibles [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted-Average Period (In Years)	4 years 2 months 12 days	6 years 9 months 18 days
Gross Carrying Value	$ 3,612	$ 3,621
Accumulated Amortization	(1,206)	(825)
Net Carrying Value	$ 2,406	$ 2,796
Non-Compete Agreements [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted-Average Period (In Years)	1 month 6 days	1 month 6 days
Gross Carrying Value	$ 30	$ 30
Accumulated Amortization	(21)	(16)
Net Carrying Value	$ 9	$ 14
Trade Names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted-Average Period (In Years)	7 months 6 days	8 months 12 days
Gross Carrying Value	$ 750	$ 750
Accumulated Amortization	(569)	(553)
Net Carrying Value	$ 181	$ 197