Property and Equipment - Schedule of Property and Equipment, Net (Detail) - USD ($) $ in Thousands	Jun. 30, 2020	Mar. 31, 2020
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 219,201	$ 209,888
Less: accumulated depreciation and amortization	(118,550)	(109,594)
Total property and equipment, net	100,651	100,294
Computers, software, and equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	13,554	13,249
Site operation equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	106,107	102,316
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total property and equipment	4,826	4,802
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	40,612	39,081
Capitalized software development costs
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 54,102	$ 50,440