Property and Equipment - Schedule of Property and Equipment, Net (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 52,151	$ 28,811
Less: accumulated depreciation and amortization	(16,754)	(8,628)
Total property and equipment, net	35,397	20,183
Computers, Software, and Equipment [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	2,985	1,983
Site Operation Equipment [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	6,383	2,535
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	868	494
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	20,513	12,355
Capitalized Software Development Costs [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 21,402	$ 11,444