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SEGMENT INFORMATION - Long Lived Assets by Geographic Area (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Geographic Areas, Long-Lived Assets [Abstract]
Long-lived assets	$ 36,635	$ 40,359
Long-lived assets percentage	100.00%	100.00%
U.S.
Geographic Areas, Long-Lived Assets [Abstract]
Long-lived assets	$ 26,392	$ 27,590
Long-lived assets percentage	72.00%	68.00%
India
Geographic Areas, Long-Lived Assets [Abstract]
Long-lived assets	$ 3,843	$ 6,703
Long-lived assets percentage	10.00%	17.00%
International, other
Geographic Areas, Long-Lived Assets [Abstract]
Long-lived assets	$ 6,400	$ 6,066
Long-lived assets percentage	18.00%	15.00%

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- Definition

Long-lived assets as a percentage of total long-lived assets.

+ References

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- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
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