Property and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
At cost:
Property and equipment, gross	$ 6,331	$ 6,609
Less: accumulated depreciation	(6,026)	(6,105)
Property and equipment, net	305	504
Leasehold improvements [Member]
At cost:
Property and equipment, gross	846	889
Computer and network equipment [Member]
At cost:
Property and equipment, gross	4,367	4,589
Office equipment [Member]
At cost:
Property and equipment, gross	900	898
Motor vehicles [Member]
At cost:
Property and equipment, gross	$ 218	$ 233

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business 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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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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