Property and Equipment - Schedule of Property and Equipment, Net (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Mar. 31, 2015
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 70,816	$ 52,151
Less: accumulated depreciation and amortization	(30,669)	(16,754)
Total property and equipment, net	40,147	35,397
Computers, Software, and Equipment [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	4,835	2,985
Site Operation Equipment [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	14,793	6,383
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	917	868
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	22,217	20,513
Capitalized Software Development Costs [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 28,054	$ 21,402