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Note 22 - Segment Reporting - Summary of Segment Reporting Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2019 | Mar. 31, 2019 | Jun. 30, 2018 | Mar. 31, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Dec. 31, 2018
Revenues | $ 15,453 |  |  | $ 22,520 |  |  | $ 24,020 |  | $ 30,780 |  |
Cost of revenues | 15,087 |  |  | 21,552 |  |  | 23,212 |  | 29,211 |  |
Total operating expenses | 1,588 |  |  | 9,288 |  |  | 2,768 |  | 11,434 |  |
Depreciation and amortization expense included in total operating expenses | 14 |  |  | 211 |  |  | 52 |  | 427 |  |
Operating (loss)/income | (1,222) |  |  | (8,320) |  |  | (1,960) |  | (9,865) |  |
Change in fair value of warrant liabilities | 821 |  |  | (526) |  |  | 471 |  | 948 |  |
Net (loss)/income | (382) |  | $ (1,140) | (9,554) |  | $ (570) | (1,522) |  | (10,124) |  |
Total assets | 14,671 |  |  |  |  |  | 14,671 |  |  |  | $ 16,968
Impairment on goodwill included in total operating expenses |  |  |  | 5,412 |  |  |  |  | 5,412 |  |
Impairment on intangible assets included in total operating expenses |  |  |  | 1,878 |  |  |  |  | 1,878 |  |
Impairment on long-term investments |  |  |  |  |  |  |  |  | (471) |  |
Net (loss)/income | (382) |  | $ (1,140) | (9,554) |  | $ (570) | (1,522) |  | (10,124) |  |
Expenditure for long-term assets |  |  |  | 2,556 |  |  |  |  | 4,205 |  |
Corporate, Non-Segment [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 371 |  |
Cost of revenues |  |  |  |  |  |  |  |  |  |  |
Total operating expenses | 419 | [1] |  | 493 | [2] |  | 871 | [3] | 1,366 | [4] |
Depreciation and amortization expense included in total operating expenses | 1 |  |  | 19 |  |  | 16 |  | 38 |  |
Operating (loss)/income | (419) |  |  | (493) |  |  | (871) |  | (995) |  |
Change in fair value of warrant liabilities | 821 |  |  | (526) |  |  | 471 |  | 948 |  |
Net (loss)/income | 401 |  |  | (1,338) |  |  | (400) |  | (855) |  |
Total assets | 16,143 |  |  |  |  |  | 16,143 |  |  |  | 17,155
Impairment on goodwill included in total operating expenses |  |  |  |  |  |  |  |  |  |  |
Impairment on intangible assets included in total operating expenses |  |  |  |  |  |  |  |  |  |  |
Impairment on long-term investments |  |  |  |  |  |  |  |  | (471) |  |
Net (loss)/income | 401 |  |  | (1,338) |  |  | (400) |  | (855) |  |
Expenditure for long-term assets |  |  |  | 1 |  |  |  |  | 2 |  |
Intersegment Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | (371) |  |
Cost of revenues |  |  |  |  |  |  |  |  |  |  |
Total operating expenses |  |  |  |  |  |  |  |  | (371) |  |
Depreciation and amortization expense included in total operating expenses |  |  |  |  |  |  |  |  |  |  |
Operating (loss)/income |  |  |  |  |  |  |  |  |  |  |
Change in fair value of warrant liabilities |  |  |  |  |  |  |  |  |  |  |
Net (loss)/income |  |  |  |  |  |  |  |  |  |  |
Total assets | (16,640) |  |  |  |  |  | (16,640) |  |  |  | (16,546)
Impairment on goodwill included in total operating expenses |  |  |  |  |  |  |  |  |  |  |
Impairment on intangible assets included in total operating expenses |  |  |  |  |  |  |  |  |  |  |
Impairment on long-term investments |  |  |  |  |  |  |  |  |  |  |
Net (loss)/income |  |  |  |  |  |  |  |  |  |  |
Expenditure for long-term assets |  |  |  |  |  |  |  |  |  |  |
Internet Ad [Member] | Operating Segments [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues | 15,453 |  |  | 22,520 |  |  | 24,020 |  | 30,689 |  |
Cost of revenues | 15,087 |  |  | 21,552 |  |  | 23,212 |  | 29,173 |  |
Total operating expenses | 1,145 |  |  | 8,766 |  |  | 1,850 |  | 10,388 |  |
Depreciation and amortization expense included in total operating expenses | 12 |  |  | 192 |  |  | 35 |  | 389 |  |
Operating (loss)/income | (779) |  |  | (7,798) |  |  | (1,042) |  | (8,872) |  |
Change in fair value of warrant liabilities |  |  |  |  |  |  |  |  |  |  |
Net (loss)/income | (760) |  |  | (8,198) |  |  | (1,075) |  | (9,271) |  |
Total assets | 11,550 |  |  |  |  |  | 11,550 |  |  |  | 12,756
Impairment on goodwill included in total operating expenses |  |  |  | 5,412 |  |  |  |  | 5,412 |  |
Impairment on intangible assets included in total operating expenses |  |  |  | 1,878 |  |  |  |  | 1,878 |  |
Impairment on long-term investments |  |  |  |  |  |  |  |  |  |  |
Net (loss)/income | (760) |  |  | (8,198) |  |  | (1,075) |  | (9,271) |  |
Expenditure for long-term assets |  |  |  |  |  |  |  |  | 448 |  |
TV Ad [Member] | Operating Segments [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 91 |  |
Cost of revenues |  |  |  |  |  |  |  |  | 38 |  |
Total operating expenses | 18 |  |  | 25 |  |  | 36 |  | 47 |  |
Depreciation and amortization expense included in total operating expenses |  |  |  |  |  |  |  |  |  |  |
Operating (loss)/income | (18) |  |  | (25) |  |  | (36) |  | 6 |  |
Change in fair value of warrant liabilities |  |  |  |  |  |  |  |  |  |  |
Net (loss)/income | (17) |  |  | (14) |  |  | (36) |  | 6 |  |
Total assets | 229 |  |  |  |  |  | 229 |  |  |  | 207
Impairment on goodwill included in total operating expenses |  |  |  |  |  |  |  |  |  |  |
Impairment on intangible assets included in total operating expenses |  |  |  |  |  |  |  |  |  |  |
Impairment on long-term investments |  |  |  |  |  |  |  |  |  |  |
Net (loss)/income | (17) |  |  | (14) |  |  | (36) |  | 6 |  |
Expenditure for long-term assets |  |  |  |  |  |  |  |  |  |  |
Blockchain Technology [Member] | Operating Segments [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |
Cost of revenues |  |  |  |  |  |  |  |  |  |  |
Total operating expenses | 6 |  |  | 4 |  |  | 11 |  | 4 |  |
Depreciation and amortization expense included in total operating expenses | 1 |  |  |  |  |  | 1 |  |  |  |
Operating (loss)/income | (6) |  |  | (4) |  |  | (11) |  | (4) |  |
Change in fair value of warrant liabilities |  |  |  |  |  |  |  |  |  |  |
Net (loss)/income | (6) |  |  | (4) |  |  | (11) |  | (4) |  |
Total assets | 3,389 |  |  |  |  |  | 3,389 |  |  |  | $ 3,396
Impairment on goodwill included in total operating expenses |  |  |  |  |  |  |  |  |  |  |
Impairment on intangible assets included in total operating expenses |  |  |  |  |  |  |  |  |  |  |
Impairment on long-term investments |  |  |  |  |  |  |  |  |  |  |
Net (loss)/income | $ (6) |  |  | (4) |  |  | $ (11) |  | (4) |  |
Expenditure for long-term assets |  |  |  | $ 2,555 |  |  |  |  | $ 3,755 |  |
[1] | Including approximately US$102,000 share-based compensation expenses.
[2] | Including approximately US$76,000 share-based compensation expenses.
[3] | Including approximately US$203,000 share-based compensation expenses.
[4] | Including approximately US$151,000 share-based compensation expenses.

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