Goodwill and Intangibles - Schedule of Carrying Value of Acquired Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Amortizable intangible assets, Gross Carrying Value	$ 4,270	$ 2,600
Amortizable intangible assets, Accumulated Amortization	(982)	(214)
Amortizable intangible assets, Net Carrying Value	3,288	2,386
Indefinite-lived intangible assets, Goodwill	7,247	3,958
Indefinite-lived intangible assets	7,907	4,618
Customer Relationships [Member]
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Amortizable intangible assets, Gross Carrying Value	2,500	1,200
Amortizable intangible assets, Accumulated Amortization	(453)	(40)
Amortizable intangible assets, Net Carrying Value	2,047	1,160
Amortizable intangible assets, Weighted Average Amortization Period	60 months	60 months
Non-compete Agreements [Member]
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Amortizable intangible assets, Gross Carrying Value	1,120	750
Amortizable intangible assets, Accumulated Amortization	(224)	(25)
Amortizable intangible assets, Net Carrying Value	896	725
Amortizable intangible assets, Weighted Average Amortization Period	60 months	60 months
Training Materials [Member]
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Amortizable intangible assets, Gross Carrying Value	440	440
Amortizable intangible assets, Accumulated Amortization	(147)	(21)
Amortizable intangible assets, Net Carrying Value	293	419
Amortizable intangible assets, Weighted Average Amortization Period	42 months	42 months
Accreditation [Member]
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Amortizable intangible assets, Gross Carrying Value	210	210
Amortizable intangible assets, Accumulated Amortization	(158)	(128)
Amortizable intangible assets, Net Carrying Value	52	82
Amortizable intangible assets, Weighted Average Amortization Period	84 months	84 months
Trademark [Member]
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets, Trademark	$ 660	$ 660