Property and Equipment - Schedule of Property and Equipment and Associated Accumulated Depreciation and Amortization (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Property and Equipment [Line Items]
Property and equipment, gross	$ 319,223	$ 303,100
Less: accumulated depreciation and amortization	(137,114)	(124,950)
Property and equipment, net	254,423	238,458
Buildings [Member]
Property and Equipment [Line Items]
Property and equipment, gross	101,707	101,707
Software and Capitalized Software Costs [Member]
Property and Equipment [Line Items]
Property and equipment, gross	109,275	99,125
Computer Equipment [Member]
Property and Equipment [Line Items]
Property and equipment, gross	60,673	56,879
Rental Clocks [Member]
Property and Equipment [Line Items]
Property and equipment, gross	21,906	20,836
Furniture, Fixtures and Equipment [Member]
Property and Equipment [Line Items]
Property and equipment, gross	18,809	18,311
Other [Member]
Property and Equipment [Line Items]
Property and equipment, gross	6,853	6,242
Excluded Land and Construction in Process [Member]
Property and Equipment [Line Items]
Property and equipment, net	182,109	178,150
Land [Member]
Property and Equipment [Line Items]
Property and equipment, net	29,034	29,034
Construction in Progress [Member]
Property and Equipment [Line Items]
Property and equipment, net	$ 43,280	$ 31,274