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INCOME TAXES (Other - Narrative) (Details) $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
Oct. 11, 2014 | Jan. 01, 2008 | Dec. 31, 2018 USD ($) item | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
INCOME TAXES |  |  |  |  |
Statutory tax rate (as a percent) |  |  | 21.00% | 35.00% |
Change in deferred tax valuation allowance |  |  | $ (1,679) | $ 5,971 | $ (3,015)
Income tax benefit related to tax credits |  |  | $ 0 | $ 0 | $ 0
China |  |  |  |  |
INCOME TAXES |  |  |  |  |
Foreign statutory tax rate (as a percent) |  |  | 25.00% |  |
Reduced tax rate for qualified high technology enterprises (as a percent) |  |  | 15.00% |  |
China | U T Starcom Telecom Co Ltd |  |  |  |  |
INCOME TAXES |  |  |  |  |
Reduced tax rate for qualified high technology enterprises (as a percent) | 15.00% | 15.00% |  |  |
Number of subsidiaries approved for the reduced tax rate | item |  |  | 1 |  |
Valid period for reduced income tax rate applicable to qualified high technology enterprise | 3 years | 3 years |  |  |

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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=84176650&loc=d3e32123-109318 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 + Details
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