Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2017	Dec. 31, 2016
Owned Assets:
Owned assets, gross	$ 197,519	$ 164,097
Less: Accumulated depreciation and amortization	(134,245)	(115,568)
Owned Assets, net	63,274	48,529
Assets under capital leases:
Capital leased assets, gross	1,671	1,797
Less: Accumulated depreciation and amortization	(1,216)	(1,297)
Assets under capital leases, net	455	500
Property, Plant and Equipment, net	63,729	49,029
Network equipment and computers
Owned Assets:
Owned assets, gross	73,728	65,381
Software
Owned Assets:
Owned assets, gross	56,369	44,617
Leasehold improvements
Owned Assets:
Owned assets, gross	36,741	31,192
Assets under capital leases:
Capital leased assets, gross	889	854
Office furniture and equipment
Owned Assets:
Owned assets, gross	18,397	15,426
Assets under capital leases:
Capital leased assets, gross	138	133
Motor vehicles
Owned Assets:
Owned assets, gross	645	580
Assets under capital leases:
Capital leased assets, gross	644	810
Buildings
Owned Assets:
Owned assets, gross	$ 1,218	1,171
Estimated useful lives	30 years
Land
Owned Assets:
Owned assets, gross	$ 797	766
Capital work in progress
Owned Assets:
Owned assets, gross	$ 9,624	$ 4,964
Minimum \| Network equipment and computers
Owned Assets:
Estimated useful lives	3 years
Minimum \| Software
Owned Assets:
Estimated useful lives	3 years
Minimum \| Leasehold improvements
Owned Assets:
Estimated useful lives	3 years
Minimum \| Office furniture and equipment
Owned Assets:
Estimated useful lives	3 years
Minimum \| Motor vehicles
Owned Assets:
Estimated useful lives	2 years
Maximum \| Network equipment and computers
Owned Assets:
Estimated useful lives	5 years
Maximum \| Software
Owned Assets:
Estimated useful lives	5 years
Maximum \| Leasehold improvements
Owned Assets:
Estimated useful lives	8 years
Maximum \| Office furniture and equipment
Owned Assets:
Estimated useful lives	8 years
Maximum \| Motor vehicles
Owned Assets:
Estimated useful lives	5 years

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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