Property and Equipment, net - Schedule of Property and Equipment (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Owned assets:
Owned assets, gross	$ 257,836	$ 228,850
Less: Accumulated depreciation and amortization	(179,331)	(155,798)
Owned assets, net	78,505	73,052
Right-of-use assets under finance leases:
Assets under capital leases, gross	1,757	1,459
Less: Accumulated depreciation and amortization	(1,120)	(1,001)
Assets under capital leases, net	637	458
Property and equipment, net	79,142	73,510
Network equipment and computers
Owned assets:
Owned assets, gross	$ 98,309	85,921
Network equipment and computers \| Minimum
Owned assets:
Estimated useful life	3 years
Network equipment and computers \| Maximum
Owned assets:
Estimated useful life	5 years
Software
Owned assets:
Owned assets, gross	$ 79,746	69,752
Software \| Minimum
Owned assets:
Estimated useful life	3 years
Software \| Maximum
Owned assets:
Estimated useful life	5 years
Leasehold improvements
Owned assets:
Owned assets, gross	$ 44,982	39,533
Right-of-use assets under finance leases:
Assets under capital leases, gross	$ 738	778
Leasehold improvements \| Minimum
Owned assets:
Estimated useful life	3 years
Leasehold improvements \| Maximum
Owned assets:
Estimated useful life	8 years
Office furniture and equipment
Owned assets:
Owned assets, gross	$ 22,046	20,097
Right-of-use assets under finance leases:
Assets under capital leases, gross	$ 308	53
Office furniture and equipment \| Minimum
Owned assets:
Estimated useful life	3 years
Office furniture and equipment \| Maximum
Owned assets:
Estimated useful life	8 years
Motor vehicles
Owned assets:
Owned assets, gross	$ 601	635
Right-of-use assets under finance leases:
Assets under capital leases, gross	$ 711	628
Motor vehicles \| Minimum
Owned assets:
Estimated useful life	2 years
Motor vehicles \| Maximum
Owned assets:
Estimated useful life	5 years
Buildings
Owned assets:
Estimated useful life	30 years
Owned assets, gross	$ 1,114	1,140
Land
Owned assets:
Owned assets, gross	729	746
Capital work in progress
Owned assets:
Owned assets, gross	$ 10,309	$ 11,026

Cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land or leased assets).

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