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Discontinued Operations - Schedule of Cumulative Gain on Disposal Activity (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Gain/(loss) on disposal of discontinued components |  | $ 16,153 |
Zhejiang Continental [Member] |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Total consideration on disposal |  | (1,700) |
Add/Less: Extinguishment of current accounts |  | 80 |
Add: Earn-out consideration payable settled |  | 8,250 |
Add/Less: Net book value of assets in connection with the disposal/divestiture |  | (1,170) |
Gain/(loss) on disposal of discontinued components |  | 5,460 |
Shenyang Jingli [Member] |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Total consideration on disposal |  |  |
Add/Less: Extinguishment of current accounts |  | 1,586 |
Add: Extinguishment of acquisition consideration payable |  | 1,437 |
Add/Less: Net book value of liability in connection with the disposal/divestiture |  | 1,641 |
Gain/(loss) on disposal of discontinued components |  | 4,664 |
Qingdao Kaixiang [Member] |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Total consideration on disposal |  |  |
Add/Less: Extinguishment of current accounts |  | 1,891 |
Add: Extinguishment of acquisition consideration payable |  | 4,126 |
Add/Less: Net book value of assets in connection with the disposal/divestiture |  | (4,574) |
Less: Goodwill writeoff |  | (3,261) |
Gain/(loss) on disposal of discontinued components |  | (1,818) |
Wuxi Ruizhong [Member] |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Total consideration on disposal |  | 147 |
Add: Obligation exempted |  | 328 |
Add/Less: Extinguishment of current accounts |  | 1,414 |
Add: Extinguishment of acquisition consideration payable |  | 322 |
Add/Less: Net book value of assets in connection with the disposal/divestiture |  | (1,750) |
Less: Goodwill writeoff |  | (3,103) |
Gain/(loss) on disposal of discontinued components |  | (2,642) |
Search Media International [Member] |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Total consideration on disposal |  | (421) |
Add/Less: Extinguishment of current accounts |  | 107,243 |
Add/Less: Net book value of liability in connection with the disposal/divestiture |  | 118,153 |
Gain/(loss) on disposal of discontinued components |  | $ 10,489 |

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